BMW F48 Technical Training Manual
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BMW F48 Technical Training Manual

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Technical￿training.
Product￿information.
F48￿General￿Vehicle￿Electronics
BMW￿Service

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  • Page 1 Technical￿training. Product￿information. F48￿General￿Vehicle￿Electronics BMW￿Service...
  • Page 2 General￿information Symbols￿used The￿following￿symbol￿is￿used￿in￿this￿document￿to￿facilitate￿better￿comprehension￿or￿to￿draw￿attention to￿very￿important￿information: Contains￿important￿safety￿information￿and￿information￿that￿needs￿to￿be￿observed￿strictly￿in￿order￿to guarantee￿the￿smooth￿operation￿of￿the￿system. Information￿status￿and￿national-market￿versions BMW￿Group￿vehicles￿meet￿the￿requirements￿of￿the￿highest￿safety￿and￿quality￿standards.￿Changes in￿requirements￿for￿environmental￿protection,￿customer￿benefits￿and￿design￿render￿necessary continuous￿development￿of￿systems￿and￿components.￿Consequently,￿there￿may￿be￿discrepancies between￿the￿contents￿of￿this￿document￿and￿the￿vehicles￿available￿in￿the￿training￿course. This￿document￿basically￿relates￿to￿the￿European￿version￿of￿left-hand￿drive￿vehicles.￿Some￿operating elements￿or￿components￿are￿arranged￿differently￿in￿right-hand￿drive￿vehicles￿than￿shown￿in￿the graphics￿in￿this￿document.￿Further￿differences￿may￿arise￿as￿a￿result￿of￿the￿equipment￿specification￿in specific￿markets￿or￿countries. Additional￿sources￿of￿information Further￿information￿on￿the￿individual￿topics￿can￿be￿found￿in￿the￿following: • Owner's￿Handbook • Integrated￿Service￿Technical￿Application. Contact:￿conceptinfo@bmw.de ©2015￿BMW￿AG,￿Munich Reprints￿of￿this￿publication￿or￿its￿parts￿require￿the￿written￿approval￿of￿BMW￿AG,￿Munich The￿information￿contained￿in￿this￿document￿forms￿an￿integral￿part￿of￿the￿technical￿training￿of￿the BMW￿Group￿and￿is￿intended￿for￿the￿trainer￿and￿participants￿in￿the￿seminar.￿Refer￿to￿the￿latest￿relevant information￿systems￿of￿the￿BMW￿Group￿for￿any￿changes/additions￿to￿the￿technical￿data. Information￿status:￿June￿2015 BV-72/Technical￿Training...

  • Page 3: Table Of Contents

    F48￿General￿Vehicle￿Electronics Contents Vehicle￿Electrical￿System ......................................1.1. Data￿bus￿overview ........................................ 1.2. Main￿bus￿systems ......................................... 1.2.1. K-CAN ........................................1.2.2. PT-CAN ........................................ 1.2.3. FlexRay ........................................1.2.4. D-CAN ........................................ 1.2.5. Ethernet ......................................1.2.6. MOST ........................................1.3. Sub-bus￿systems ....................................... 1.3.1. Local￿interconnect￿network￿bus ....................... 1.3.2. Local-CAN ....................................1.3.3......................................... 1.3.4.
  • Page 4 F48￿General￿Vehicle￿Electronics Contents 3.2.2. Vehicles￿with￿LED￿headlights ........................Interior￿Lighting ............................................4.1. System￿wiring￿diagram ..................................... Heating/Air￿Conditioning￿Systems ................................5.1. Components￿and￿systems .................................. 5.1.1. Integrated￿automatic￿heating￿and￿air￿conditioning ............5.1.2. Heating￿and￿air-conditioning￿unit ......................5.1.3. Microfilter ...................................... 5.1.4. Air/Water￿separation￿(Venturi￿adapter) ................... 5.1.5. ECO￿PRO￿mode￿of￿heating￿and￿air￿conditioning￿program ....... Locking￿and￿Security￿Functions .................................. 6.1. Overview￿of￿functions ....................................6.1.1. Remote￿control￿receiver ............................6.2. Central￿locking￿system .....................................
  • Page 5 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.1.￿Data￿bus￿overview F48￿data￿bus￿overview...
  • Page 6 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Index Explanation Start-up￿node￿control￿units￿for￿starting￿and synchronizing￿the￿FlexRay￿bus￿system Control￿units￿with￿wake-up￿authorisation ACSM Advanced￿Crash￿Safety￿Module Audio￿amplifier Body￿Domain￿Controller Central￿information￿display Controller Digital￿Motor￿Electronics Dynamic￿Stability￿Control Electronic￿transmission￿control Electronic￿Power￿Steering FLEL Frontal￿Light￿Electronics￿Left FLER Frontal￿Light￿Electronics￿Right Roof￿function￿center HEADUNIT Headunit Automatic￿operation￿of￿tailgate Head‐Up￿Display IHKA Integrated￿heating￿and￿air￿conditioning KAFAS Camera-based￿driver￿support￿systems KOMBI Instrument￿cluster Longitudinal￿torque￿distribution Park￿Distance￿Control Parking￿Manoeuvring￿Assistant Optional￿equipment￿system SMFA Driver's￿seat￿module Touchbox Telematic￿Communication￿Box TRSVC Control￿unit￿for￿rear￿view￿camera￿and￿Side￿View...

  • Page 7: K-Can

    F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.2.￿Main￿bus￿systems 1.2.1.￿K-CAN In￿the￿F48￿the￿following￿K-CANs￿are￿used: • K-CAN2 • K-CAN3 • K-CAN4 All￿K-CAN￿data￿buses￿have￿a￿data￿transfer￿rate￿of￿500 kBit/s. The￿K-CAN￿with￿100￿kBit/s￿is￿no￿longer￿used￿in￿the￿F48.
  • Page 8 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System K-Can￿termination F48￿K-Can￿termination...
  • Page 9 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Index Explanation Body￿Domain￿Controller￿(BDC) Integrated￿heating￿and￿air￿conditioning Headunit Controller￿(CON) K-CAN￿terminator Touchbox￿(TBX) Audio￿amplifier￿(AMP) Telematic￿Communication￿Box￿(TCB) The￿CAN￿buses￿are￿shown￿in￿the￿overview￿of￿the￿bus￿systems.￿The￿actual￿physical￿layout￿(topology)￿is shown￿using￿the￿example￿of￿the￿K-CAN2. As￿with￿most￿bus￿systems,￿terminating￿resistors￿are￿also￿used￿for￿protection￿of￿the￿K-CAN￿to￿avoid residual￿voltages￿on￿the￿data￿lines. The￿terminating￿resistors￿for￿the￿termination￿are￿located￿in￿the: • Body￿Domain￿Controller￿and • K-CAN￿terminators. All￿other￿control￿units￿are￿connected￿at￿the￿K-CAN￿terminator￿without￿a￿terminating￿resistor.
  • Page 10 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System CAN￿terminator CAN￿terminator Depending￿on￿the￿equipment￿package,￿in￿the￿CAN￿terminator￿the￿terminating￿resistor￿for￿the corresponding￿CAN￿bus￿is￿installed.￿The￿terminating￿resistor￿comprises￿two￿resistances￿connected in￿series,￿each￿60￿Ohm.￿A￿measuring￿tap￿against￿ground￿with￿a￿capacitor￿for￿the￿reduction￿of￿high- frequency￿faults￿is￿also￿installed.￿Ferrite￿beads￿are￿installed￿for￿all￿bus￿lines￿in￿the￿CAN￿terminator. Ferrite￿beads￿suppress￿high-frequency￿faults￿on￿the￿CAN￿data￿lines,￿thus￿making￿possible￿line￿lengths of￿up￿to￿5 m￿in￿the￿wiring￿harness. Ferrite￿core A￿ferrite￿core￿is￿a￿component￿made￿from￿the￿ferromagnetic￿material￿iron￿oxide￿hematite￿(Fe203).￿It￿is characterized￿by￿low￿or￿no￿conductivity.￿The￿inductance￿or￿the￿magnetic￿field￿is￿increased￿as￿part￿of￿a coil￿(throttle￿or￿transformer).￿If￿a￿ferrite￿core￿is￿secured￿around￿a￿conductor,￿which￿routes￿signals￿at￿low frequency￿or￿direct￿current￿voltage,￿high-frequency￿faults￿are￿attenuated￿with￿its￿help. Ferrite￿core Index Explanation Ferrite￿core￿using￿the￿example￿of￿a￿USB￿line...
  • Page 11 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Oscilloscope If￿there￿are￿no￿terminating￿resistors￿in￿a￿CAN￿bus￿or￿they￿are￿faulty,￿this￿may￿lead￿to￿reflections￿or faults.￿These￿reflections￿or￿faults￿are￿shown￿in￿the￿following￿graphic: Oscilloscope￿holder￿K-CAN Index Explanation Oscilloscope￿holder￿with￿active￿CAN￿terminator Oscilloscope￿holder￿with￿disconnected￿or￿faulty￿CAN￿terminator...

  • Page 12: Can

    F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Installation￿location Depending￿on￿the￿equipment￿package,￿a￿maximum￿of￿four￿CAN￿terminators￿are￿installed￿in￿the￿F48. The￿installation￿locations￿are￿shown￿in￿the￿following￿graphic: F48￿installation￿location￿of￿CAN￿terminators Index Explanation CAN￿terminator￿integrated￿in￿the￿Body￿Domain￿Controller K-CAN3￿terminator,￿rear￿right K-CAN2￿terminator,￿rear￿right K-CAN4￿terminator,￿rear￿left 1.2.2.￿PT-CAN In￿the￿F48￿the￿following￿PT-CANs￿are￿used: • PT-CAN • PT-CAN2...

  • Page 13: Flexray

    F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.2.3.￿FlexRay F48￿system￿wiring￿diagram￿for￿FlexRay...
  • Page 14 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Index Explanation Digital￿Motor￿Electronics￿(DME) Electronic￿Power￿Steering￿(electromechanical￿power￿steering)￿(EPS) Dynamic￿Stability￿Control￿(DSC) Body￿Domain￿Controller￿(BDC) Optional￿equipment￿system￿(SAS) Crash￿Safety￿Module￿(ACSM) FlexRay￿data￿bus￿topology The￿FlexRay￿is￿shown￿in￿a￿simplified￿form￿in￿the￿data￿bus￿overview.￿The￿actual￿topology￿(star-shaped data￿bus￿topology)￿is￿shown￿in￿the￿graphic￿at￿the￿top. The￿star￿coupler￿with￿four￿drivers￿is￿located￿in￿the￿Body￿Domain￿Controller￿(BDC).￿The￿FlexRay￿control units￿are￿connected￿to￿these￿bus￿drivers￿independent￿of￿their￿termination￿type. Bus￿termination As￿with￿most￿bus￿systems,￿resistors￿are￿also￿used￿for￿termination￿for￿the￿FlexRay￿to￿avoid￿reflections on￿the￿data￿lines￿at￿both￿ends￿of￿the￿data￿lines.￿The￿value￿of￿these￿terminating￿resistors￿is￿calculated from￿the￿data￿transfer￿speed￿and￿the￿cable￿lengths.￿The￿terminating￿resistors￿are￿located￿in￿the￿control units.￿In￿the￿F48￿the￿terminating￿resistors￿have￿a￿value￿of￿90 ohm￿(total￿resistance￿45 ohm). Use￿the￿vehicle￿wiring￿diagram￿for￿measuring￿the￿(de-energized)￿FlexRay￿data￿bus￿for￿the determination￿of￿the￿line￿or￿terminating￿resistor. Signal￿properties Electrical￿faults,￿which￿arise￿from￿incorrect￿cable￿routing,￿contact￿resistances,￿etc.￿may￿cause￿faulty data￿transfer.
  • Page 15 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Oscilloscope￿presentation￿of￿FlexRay The￿voltage￿ranges￿of￿the￿FlexRay￿bus￿system￿are: • System￿ON￿-￿no￿bus￿communication￿2.5 V • High￿signal￿-￿3.1 V￿(voltage￿signal￿increases￿to￿600 mV￿and￿upwards) • Low￿signal￿-￿1.9 V￿(voltage￿signal￿decreases￿from￿600 mV￿downwards) The￿voltage￿values￿are￿measured￿against￿ground.
  • Page 16 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Deterministic￿data￿transfer Deterministic￿data￿transfer Index Explanation Time-controlled￿range￿of￿cyclical￿data￿transfer Event-controlled￿range￿of￿cyclical￿data￿transfer Cycle￿[5 ms￿overall￿cycle￿duration,￿of￿which￿3 ms￿static￿(=￿time-controlled) and￿2 ms￿dynamic￿(=￿event-controlled)] Speed￿of￿rotation <° Angle t° Temperature Speed xyz...￿abc... Event-controlled￿information Time...

  • Page 17: D-Can

    F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System The￿CAN￿bus￿system￿is￿an￿event-controlled￿bus￿system.￿Data￿is￿transmitted￿when￿an￿event￿occurs. As￿these￿events￿have￿different￿priorities￿(e.g.￿ambient￿temperature￿has￿a￿lower￿priority￿than￿a￿DSC intervention,￿for￿example),￿the￿priorities￿are￿also￿sent￿in￿the￿bus￿message.￿The￿message￿with￿the higher￿priority￿is￿sent￿first.￿As￿the￿control￿unit￿still￿wants￿to￿send￿the￿message￿which￿has￿the￿lower priority,￿it￿frequently￿results￿in￿overloading￿in￿the￿bus￿systems. The￿FlexRay￿works￿with￿so-called￿"time￿slots".￿With￿this￿method￿the￿messages￿are￿sent￿and￿are￿not controlled￿by￿events,￿but￿each￿control￿unit￿in￿the￿FlexRay￿network￿is￿assigned￿a￿fixed￿time￿slot￿in￿which it￿sends￿its￿message￿within￿a￿certain￿period.￿This￿time￿slot￿is￿synchronised￿with￿every￿restart￿of￿the data￿bus.￿The￿control￿units￿which￿synchronize￿the￿FlexRay￿are￿always￿labelled￿in￿the￿bus￿diagram￿with a￿"S"￿(see￿chapter￿1.1). The￿FlexRay￿can￿also￿be￿synchronised￿with￿the￿BMW￿diagnosis￿system￿in￿the￿event￿of￿a￿fault￿and corresponding￿fault￿code. 1.2.4.￿D-CAN The￿D-CAN￿for￿the￿vehicle￿diagnosis￿has￿a￿data￿transfer￿rate￿of￿500￿kBit/s. 1.2.5.￿Ethernet The￿Ethernet￿access￿is￿used￿for￿programming￿the￿entire￿vehicle. In￿a￿F48￿with￿navigation￿system￿the￿map￿update￿for￿the￿navigation￿can￿also￿be￿effected￿using￿the Ethernet￿interface. 1.2.6.￿MOST In￿the￿F48￿the￿Media￿Oriented￿System￿Transport￿(MOST)￿bus￿works￿at￿a￿data￿transfer￿rate￿of 22.5 MBit/s. 1.3.￿Sub-bus￿systems 1.3.1.￿Local￿interconnect￿network￿bus Different￿data￿rates￿are￿used￿for￿the￿local￿interconnect￿network￿bus￿according￿to￿the￿information required.￿The￿data￿transfer￿rates￿of￿the￿local￿interconnect￿network￿bus￿in￿the￿F48￿range￿from￿19.2 kBit/ s￿to￿20.0 kBit/s. Examples: • 19.2￿kBit/s￿FLEL,￿FLER • 20.0￿kBit/s￿remote￿control￿receiver The￿Body￿Domain￿Controller￿is￿designed￿for￿the￿different￿data￿rates￿at￿the￿corresponding￿inputs.

  • Page 18: Local-Can

    F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.3.2.￿Local-CAN With￿corresponding￿optional￿equipment,￿the￿Local￿Controller￿Area￿Network￿connects￿the￿optional equipment￿system￿(SAS)￿with￿the￿control￿unit￿for￿the￿camera-based￿driver￿support￿systems￿(KAFAS). The￿Local￿Controller￿Area￿Network￿has￿a￿data￿transfer￿rate￿of￿500 kBit/s. 1.3.3.￿USB Depending￿on￿the￿equipment,￿the￿following￿USB￿connections￿are￿possible: • from￿the￿headunit￿to￿the￿Telematic￿Communication￿Box￿(TCB) • from￿the￿headunit￿to￿the￿telephone￿base￿plate • from￿the￿headunit￿to￿the￿USB￿port 1.3.4.￿APIX The￿central￿information￿display￿(CID)￿and￿the￿Head‐Up￿Display￿(HUD)￿in￿the￿F48￿are￿not￿connected￿to a￿vehicle￿data￿bus.￿Both￿control￿units￿are￿connected￿directly￿to￿the￿headunit￿via￿an￿APIX￿interface￿or the￿instrument￿cluster￿(KOMBI).￿APIX￿(Automotive￿Pixel￿Link)￿is￿a￿bit-serial￿data￿transfer￿system. APIX Index Explanation APIX￿transmitter Message￿to￿be￿sent￿(max.￿1 Gbit/s) APIX￿receiver Confirmation￿message￿(62.5 Mbit/s)
  • Page 19 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.4.￿Control￿units This￿chapter￿contains￿information￿on￿control￿units, • which￿are￿used￿for￿the￿first￿time￿in￿the￿F48 • which￿have￿been￿adapted￿for￿the￿F48 1.4.1.￿Complete￿overview The￿installation￿locations￿of￿all￿the￿control￿units￿are￿shown￿in￿the￿following￿graphic. F48￿Installation￿location￿of￿the￿control￿units...
  • Page 20 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System Index Explanation Frontal￿Light￿Electronics￿Right￿(FLER) Dynamic￿Stability￿Control￿(DSC) Body￿Domain￿Controller￿(BDC) Camera-based￿driver￿support￿systems￿(KAFAS) Headunit Controller￿(CON) Roof￿function￿center￿(FZD) Optional￿equipment￿system￿(SAS) Park￿Distance￿Control￿(PDC)/Parking￿Manoeuvring￿Assistant￿(PMA) Automatic￿operation￿of￿tailgate￿(HKL) Rear￿view￿camera￿(RFK) Telematic￿Communication￿Box￿(TCB) Amplifier￿(AMP) Touchbox￿(TBX) Longitudinal￿torque￿distribution￿(LMV) Crash￿Safety￿Module￿(ACSM) Driver's￿seat￿module (SMFA) Instrument￿cluster￿(KOMBI) Integrated￿heating￿and￿air￿conditioning￿(IHKA) Electronic￿Power￿Steering￿(EPS) Digital￿Engine￿Electronics￿(DME) Electronic￿transmission￿control￿(EGS) Frontal￿Light￿Electronics￿Left￿(FLEL)
  • Page 21 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.4.2.￿Body￿Domain￿Controller F48￿Body￿Domain￿Controller￿(BDC) The￿Body￿Domain￿Controller￿replaces￿the￿control￿units￿known￿from￿the￿F20/F30: • Front￿Electronic￿Module￿(FEM) • Rear￿Electronic￿Module￿(REM) Further￿information￿on￿the￿Body￿Domain￿Controller￿is￿available￿in￿the￿ST1312￿reference￿manual￿"F15 General￿Vehicle￿Electrical￿System". 1.4.3.￿Frontal￿Light￿Electronics F48￿Frontal￿Light￿Electronics￿Left￿and￿Right The￿control￿units￿for￿the￿Frontal￿Light￿Electronics￿Left￿(FLEL)￿and￿Frontal￿Light￿Electronics￿Right (FLER)￿are￿installed￿in￿the￿left￿and￿right￿headlight￿for￿the￿LED￿headlight￿equipment.
  • Page 22 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System The￿Frontal￿Light￿Electronics￿includes: • The￿activation￿of￿the￿LEDs￿in￿the￿corresponding￿headlight. • The￿activation￿of￿the￿stepper￿motor￿for￿the￿headlight￿beam￿throw￿adjustment. The￿control￿units￿FLEL￿and￿FLER￿are￿connected￿at￿the￿K-CAN3￿and￿at￿the￿LIN. 1.4.4.￿TRSVC￿control￿unit F48￿TRSVC￿control￿unit The￿Top￿Rear￿Side￿View￿Camera￿(TRSVC)￿control￿unit￿and￿the￿actual￿rear￿view￿camera￿are￿integrated￿in the￿one￿housing. Only￿the￿rear￿view￿camera￿is￿offered￿for￿the￿F48. The￿TRSVC￿control￿unit￿is￿connected￿at￿the￿K-CAN3.￿With￿the￿BMW￿diagnosis￿system￿the￿rear￿view camera￿is￿displayed￿as￿a￿TRSVC.
  • Page 23 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.4.5.￿Park￿Distance￿Control/Parking￿Maneuver￿Assistant F48￿Park￿Distance￿Control Park￿Distance￿Control￿(PDC)￿assists￿the￿driver￿when￿maneuver￿in￿and￿out￿of￿a￿parking￿space. The￿current￿distance￿from￿an￿obstruction￿is￿indicated￿by￿acoustic￿signals￿and￿on￿a￿visual￿display. In￿vehicles￿with￿Parking￿Maneuver￿Assistant￿(PMA),￿the￿sensors￿of￿the￿Park￿Distance￿Control￿(PDC) are￿evaluated￿by￿the￿Parking￿Maneuver￿Assistant￿control￿unit. The￿customer￿can￿find￿the￿Parking￿Maneuver￿Assistant￿in￿the￿equipment￿list￿as￿Parking￿Maneuver Assistant￿(SA￿5DP).￿The￿Parking￿Maneuver￿Assistant￿facilitates￿parking￿in￿gaps￿between￿cars￿parallel to￿the￿roadway. The￿PDC/PMA￿control￿unit￿is￿connected￿at￿the￿K-CAN2. In￿the￿BMW￿diagnosis￿system￿the￿PDC￿control￿unit￿is￿displayed￿as￿a￿PMA.
  • Page 24 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.4.6.￿Crash￿Safety￿Module F48￿Crash￿Safety￿Module The￿function￿of￿the￿Advanced￿Crash￿Safety￿Module￿(ACSM)￿is￿to￿permanently￿evaluate￿all￿sensor signals￿in￿order￿to￿identify￿a￿crash￿situation.￿The￿ACSM￿evaluates￿the￿information￿from￿the￿sensors then￿forwards￿corresponding￿measures￿for￿selective￿activation￿of￿the￿necessary￿restraint￿systems. The￿ACSM￿records￿the￿yaw￿rate￿and￿sends￿this￿information￿on￿the￿FlexRay￿data￿bus. No￿additional￿yaw￿sensors￿are￿required￿for￿the￿following￿systems: • Dynamic￿Stability￿Control￿(DSC) • Navigation￿system The￿ACSM￿is￿connected￿to￿the￿FlexRay. 1.4.7.￿Dynamic￿Stability￿Control F48￿Dynamic￿Stability￿Control...
  • Page 25 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System The￿Dynamic￿Stability￿Control￿(DSC)￿also￿includes￿the￿tire￿pressure￿control￿function￿as￿well￿as￿the activation￿of￿the￿actuators￿of￿the￿EMF,￿in￿addition￿to￿the￿familiar￿functions￿for￿driving￿stability￿control, in￿the￿F48.￿These￿functions￿are￿described￿in￿more￿detail￿in￿the￿section￿"F48￿Chassis￿and￿Suspension". The￿DSC￿is￿connected￿at￿the￿FlexRay. 1.4.8.￿Optional￿equipment￿system F48￿Optional￿equipment￿system The￿optional￿equipment￿system￿SAS￿control￿unit￿is￿not￿an￿element￿of￿the￿standard￿equipment. The￿vehicle￿must￿have￿at￿least￿one￿of￿the￿two￿optional￿equipment￿packages￿in￿order￿for￿an￿SAS to￿be￿installed: • Dynamic￿Damper￿Control￿(SA￿223) • Driving￿Assistant￿(SA￿5AS) The￿optional￿equipment￿system￿(SAS)￿control￿unit￿provides￿a￿variety￿of￿driver￿assistance￿functions. Possible￿functions: • Collision￿warning￿with￿city￿braking￿function￿(SA￿5AS) • Pedestrian￿warning￿with￿city￿braking￿function￿(SA￿5AS) • Cruise￿control￿with￿braking￿function￿(as￿a￿sub-function￿of￿ACC￿Stop&Go￿(SA￿5AS)) • Camera-based￿cruise￿control￿ACC￿Stop&Go￿(SA￿5AT) • Dynamic￿Damper￿Control￿(SA￿223) The￿image￿information￿required￿by￿the￿optional￿equipment￿system￿(SAS)￿is￿provided￿by￿the￿camera- based￿driver￿support￿systems￿(KAFAS)￿control￿unit. The￿optional￿equipment￿system￿is￿connected￿at￿the￿FlexRay￿and￿via￿a￿Local￿Controller￿Area￿Network￿at the￿camera-based￿driver￿support￿system.
  • Page 26 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.4.9.￿Camera-based￿driver￿support￿systems F48￿Camera-based￿driver￿support￿systems The￿control￿unit￿camera-based￿driver￿support￿systems￿(KAFAS)￿is￿required￿for￿the￿following optional￿equipment: • Camera-based￿cruise￿control￿ACC￿Stop&Go • Road￿sign￿recognition￿including￿no￿overtaking￿display • Lane￿departure￿warning • Collision￿warning • Pedestrian￿warning￿with￿city￿braking￿function • Collision￿warning￿with￿city￿braking￿function The￿camera-based￿driver￿support￿system￿control￿unit￿is￿connected￿to￿the￿PT-CAN￿and￿to￿the￿optional equipment￿system￿(SAS)￿via￿a￿Local￿Controller￿Area￿Network.
  • Page 27 F48￿General￿Vehicle￿Electronics 1.￿Vehicle￿Electrical￿System 1.4.10.￿Automatic￿operation￿of￿tailgate F48￿control￿unit￿for￿automatic￿operation￿of￿tailgate The￿automatic￿operation￿of￿tailgate￿(HKL)￿is￿responsible￿for￿the￿automatic￿tailgate￿opening￿and closing.￿The￿HKL￿monitors￿and￿activates￿the￿electric￿spindle￿drives￿for￿the￿tailgate￿activation. The￿HKL￿is￿connected￿at￿the￿K-CAN2. 1.4.11.￿Longitudinal￿torque￿distribution F48￿control￿unit￿for￿longitudinal￿torque￿distribution In￿the￿F48￿with￿four-wheel￿drive,￿the￿longitudinal￿torque￿distribution￿distributes￿the￿drive￿torque variably￿to￿the￿front￿and￿rear￿axles. The￿longitudinal￿torque￿distribution￿is￿connected￿at￿the￿K-CAN3.

  • Page 28: Overview

    F48￿General￿Vehicle￿Electronics 2.￿Voltage￿Supply 2.1.￿Overview F48￿Voltage￿supply Index Explanation Alternator Body￿Domain￿Controller￿(BDC) Power￿distribution￿box,￿passenger￿compartment Battery￿power￿distribution￿box Battery...
  • Page 29 F48￿General￿Vehicle￿Electronics 2.￿Voltage￿Supply F48￿system￿wiring￿diagram￿for￿voltage￿supply...

  • Page 30: Components

    F48￿General￿Vehicle￿Electronics 2.￿Voltage￿Supply Index Explanation B+￿jump￿start￿terminal￿point Electric￿fan￿relay Battery Intelligent￿battery￿sensor Battery￿power￿distribution￿box Digital￿Engine￿Electronics￿(DME) Alternator Starter￿motor Preheating￿control￿unit￿(only￿for￿diesel-engine￿cars) Electronic￿Power￿Steering￿(EPS) Dynamic￿Stability￿Control￿(DSC) Power￿distribution￿box,￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Blower￿motor,￿passenger￿compartment 2.2.￿Components The￿voltage￿supply￿of￿the￿F48￿is￿comprised￿of￿the￿following￿components: • Battery • Intelligent￿Battery￿Sensor￿(IBS) • Battery￿power￿distribution￿box • Power￿distribution￿box,￿passenger￿compartment • Alternator • Ground￿connections • Body￿Domain￿Controller￿(BDC)

  • Page 31: Battery

    F48￿General￿Vehicle￿Electronics 2.￿Voltage￿Supply 2.2.1.￿Battery AGM￿battery Depending￿on￿the￿equipment￿package,￿either￿a￿70 Ah￿AGM￿battery￿or￿80 Ah￿AGM￿battery￿is￿installed in￿the￿engine￿compartment￿in￿the￿F48. 2.2.2.￿Intelligent￿battery￿sensor Intelligent￿battery￿sensor Index Explanation Negative￿battery￿terminal Intelligent￿battery￿sensor￿(IBS) Battery￿earth￿lead The￿intelligent￿battery￿sensor￿(IBS)￿records￿the￿following￿data￿of￿the￿battery: • Voltage • Current • Pole￿temperature The￿IBS￿performs￿the￿calculation￿and￿the￿evaluation￿of￿the￿information.￿The￿results￿are￿then￿forwarded to￿the￿superior￿control￿units￿via￿local￿interconnect￿network￿bus￿(DME￿and￿BDC).
  • Page 32 F48￿General￿Vehicle￿Electronics 2.￿Voltage￿Supply The￿IBS￿has￿the￿same￿range￿of￿functions￿as￿with￿the￿predecessor￿models.￿The￿data￿transfer￿via￿the local￿interconnect￿network￿bus￿between￿the￿IBS,￿DEM￿and￿BDC￿is￿new.￿The￿IBS￿has￿a￿wake-up function. The￿IBS￿continuously￿records￿relevant￿values￿for￿the￿battery￿indicators￿when￿the￿vehicle￿is￿in￿rest state.￿These￿can￿be￿read￿out￿for￿the￿diagnosis￿in￿the￿DME/DDE. The￿IBS￿is￿fully￿functional￿directly￿after￿installation￿at￿the￿battery￿terminal￿(screw￿connection￿at negative￿battery￿terminal￿and￿connection￿of￿signal￿lines),￿i.e.￿the￿basic￿variables￿voltage,￿current￿and temperature￿can￿be￿called￿up￿straight￿away.￿However,￿the￿variables￿deduced￿for￿power￿management (battery￿condition,￿starting￿capability,￿etc.)￿must￿be￿recalculated￿and￿are￿therefore￿available￿with￿a delay. 2.2.3.￿Power￿distribution￿boxes Power￿distribution￿box,￿passenger￿compartment The￿power￿distribution￿box￿in￿the￿passenger￿compartment￿is￿located￿behind￿the￿glove￿box. Some￿functions￿for￿which￿load￿relays￿are￿integrated￿in￿the￿BDC￿are￿protected￿directly￿in￿the￿BDC. F48￿Power￿distribution￿box,￿passenger￿compartment Index Explanation Relay,￿terminal￿15N Relay,￿terminal￿30B Relay,￿terminal￿30B...
  • Page 33 F48￿General￿Vehicle￿Electronics 2.￿Voltage￿Supply Battery￿power￿distribution￿box The￿battery￿power￿distribution￿box￿supplies￿the￿following￿components￿with￿voltage: • Power￿distribution￿box,￿passenger￿compartment • Electric￿fan • Electronic￿Power￿Steering￿(EPS) • Dynamic￿Stability￿Control￿(DSC)￿(pump) • Body￿Domain￿Controller￿(BDC) F48￿Battery￿power￿distribution￿box Power￿distribution￿box￿in￿Body￿Domain￿Controller The￿following￿components￿are￿protected￿by￿fuses￿in￿the￿BDC￿power￿distribution￿box: • Steering￿column￿switch￿cluster￿(SZL) • Intelligent￿Safety￿button • Light￿switch • Rain-light-solar-condensation￿sensor￿(RLSBS) • OBD2￿interface • Heating￿and￿air-conditioning￿units • Outside￿door￿handle￿electronics￿(TAGE) • Telematic￿Communication￿Box￿(TCB) • Hands￿free￿tailgate￿activation • Power￿windows • Central￿locking￿system •...

  • Page 34: Headlights

    F48￿General￿Vehicle￿Electronics 3.￿Exterior￿Lights 3.1.￿Headlights There￿are￿some￿new￿features￿in￿the￿area￿of￿the￿headlights￿for￿the￿F48. The￿F48￿receives￿halogen￿headlights￿in￿the￿basic￿equipment.￿LED￿headlights￿with￿extended￿scope (SA￿5A4)￿are￿available￿as￿optional￿equipment. Xenon￿headlights￿are￿not￿offered￿for￿the￿F48. 3.1.1.￿Halogen￿headlight With￿the￿halogen￿headlights,￿the￿low-beam￿headlight,￿the￿high￿beam,￿as￿well￿as￿the￿turn￿indicator, are￿realized￿using￿bulbs.￿The￿side￿light￿and￿the￿daytime￿driving￿lights￿are￿generated￿via￿LEDs. F48￿Halogen￿headlight Index Explanation Bulb￿for￿high￿beam Bulb￿for￿low-beam￿headlight Bulb￿for￿turn￿indicator LEDs￿for￿side￿light/daytime￿driving￿lights...
  • Page 35 F48￿General￿Vehicle￿Electronics 3.￿Exterior￿Lights 3.1.2.￿LED￿headlight￿with￿extended￿scope The￿optional￿equipment￿LED￿headlight￿with￿extended￿scope￿(SA￿5A4)￿also￿includes￿the￿adaptive￿light distribution,￿the￿cornering￿light￿and￿the￿static￿adaptive￿headlight,￿in￿addition￿to￿the￿functions￿of￿the LED￿headlight. F48￿LED￿headlight￿with￿extended￿scope Index Explanation Cornering￿light Design￿trim Positioning￿light Low-beam￿headlight/High-beam￿headlight Bulb￿for￿turn￿indicator Side￿lights/Daytime￿driving￿lights Functions The￿variable￿beam￿pattern￿offers￿improved￿adaptation￿of￿the￿beam￿pattern￿on￿the￿road￿situation. Depending￿on￿the￿speed￿driven,￿a￿distinction￿is￿made￿between￿the￿following￿beam￿patterns: • Cornering￿light • Adaptive￿headlight Cornering￿light The￿LED￿cornering￿light￿is￿integrated￿at￿the￿side￿in￿the￿headlight.￿During￿a￿slow￿journey￿(up￿to 45 km/h) the￿cornering￿light￿is￿either￿activated￿via￿the￿turn￿indicator￿or￿from￿a￿certain￿steering￿angle. Static￿adaptive￿headlight At￿speeds￿between￿45 km/h￿and￿70 km/h￿the￿cornering￿light￿is￿used￿as￿a￿"static￿Adaptive￿Headlight". The￿LEDs,￿which￿are￿responsible￿for￿the￿cornering￿light,￿are￿activated￿in￿order￿to￿illuminate￿the cornering￿area.￿This￿function￿is￿called￿a￿static￿Adaptive￿Headlight￿because￿the￿headlight￿is￿not￿moved.
  • Page 36 F48￿General￿Vehicle￿Electronics 3.￿Exterior￿Lights Special￿features In￿vehicles￿with￿LED￿headlights￿a￿ride￿height￿sensor￿for￿the￿automatic￿headlight￿beam￿throw adjustment￿is￿installed￿at￿the￿front￿and￿rear￿axle￿on￿the￿right￿side￿of￿vehicle. For￿the￿F48￿with￿LED￿headlight,￿a￿headlight￿cleaning￿system￿is￿not￿required.￿This￿could￿be￿waived￿due to￿compliance￿with￿all￿legal￿requirements. The￿Frontal￿Light￿Electronics￿Left￿and￿Right￿(FLEL/FLER)￿is￿installed￿at￿the￿rear￿side￿of￿the￿LED headlight￿and￿controls￿the￿following￿functions: • Low-beam￿headlight • High￿beam • Headlight￿flasher • Headlight￿beam￿angle￿adjustment • Cornering￿lights In￿addition,￿the￿FLE￿controls￿the￿temperature￿control￿in￿the￿LED￿headlight.￿The￿values￿of￿two temperature￿sensors￿at￿the￿heat￿sink￿serve￿as￿input￿signals.￿After￿switching￿off￿the￿lighting￿function￿an after-run￿of￿the￿fans￿of￿up￿to￿60￿seconds￿is￿possible.￿In￿the￿temperature￿control￿there￿is￿also￿a￿function for￿the￿de-icing￿of￿the￿LED￿headlight. In￿the￿case￿of￿a￿failure￿of￿a￿temperature￿sensor￿the￿fans￿are￿switched￿on￿at￿full￿power￿to￿protect￿the components￿in￿the￿LED￿headlight.￿The￿data￿from￿the￿FLE￿is￿transferred￿to￿the￿Body￿Domain￿Controller (BDC)￿via￿the￿local￿interconnect￿network￿bus￿for￿the￿diagnosis￿of￿the￿fans￿and￿temperature￿sensors. For￿legal￿reasons￿(approval￿of￿light￿technology),￿the￿LED￿headlight￿obtains￿a￿forced￿connection￿for￿the rain-light-solar-condensation￿sensor.
  • Page 37 F48￿General￿Vehicle￿Electronics 3.￿Exterior￿Lights System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿the￿LED￿headlight...
  • Page 38 F48￿General￿Vehicle￿Electronics 3.￿Exterior￿Lights Index Explanation Left￿fog￿light LED￿headlight￿with￿extended￿scope,￿left LED￿headlight￿with￿extended￿scope,￿right Right￿fog￿light Ride￿height￿sensor,￿front￿right Fuses￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Fuse￿in￿the￿Body￿Domain￿Controller Ride￿height￿sensor,￿rear￿right Light￿switch Hazard￿warning￿switch/Intelligent￿Safety￿button Steering￿column￿switch￿cluster￿(SZL) Rain-light-solar-condensation￿sensor￿(RLSBS) Fuse￿in￿the￿power￿distribution￿box,￿battery 3.1.3.￿fog￿lights F48￿fog￿lights The￿F48￿comes￿with￿fog￿lights￿as￿standard￿equipment.￿Halogen￿lights￿are￿used￿inside￿the￿fog￿lights.
  • Page 39 F48￿General￿Vehicle￿Electronics 3.￿Exterior￿Lights 3.2.￿Rear￿lights Depending￿on￿equipment,￿two￿different￿versions￿of￿rear￿lights￿are￿used￿in￿the￿F48. 3.2.1.￿In￿vehicles￿with￿halogen￿headlights F48￿with￿halogen￿headlights Index Explanation Turn￿indicator Reversing￿light Tail￿light/fog￿light Tail￿light/brake￿light Only￿bulbs￿are￿used￿in￿the￿rear￿lights￿for￿vehicles￿with￿halogen￿headlights.
  • Page 40 F48￿General￿Vehicle￿Electronics 3.￿Exterior￿Lights 3.2.2.￿Vehicles￿with￿LED￿headlights F48￿with￿LED￿headlights Index Explanation Turn￿indicator Tail￿light￿(LED) Reversing￿light Fog￿light Brake￿light In￿conjunction￿with￿LED￿headlights￿(SA￿5A4),￿the￿tail￿light￿function￿in￿the￿rear￿light￿is￿performed￿with LEDs.
  • Page 41 F48￿General￿Vehicle￿Electronics 4.￿Interior￿Lighting The￿F48￿is￿offered￿with￿two￿different￿concepts￿of￿interior￿lighting. • Basic • Lights￿package￿(SA￿563) Other￿contour￿lights￿can￿also￿be￿installed￿with￿the￿optional￿equipment￿Sport￿Line￿(SA￿7AC)￿and￿xLine (SA￿7HW).
  • Page 42 F48￿General￿Vehicle￿Electronics 4.￿Interior￿Lighting 4.1.￿System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿interior￿lighting￿with￿light￿package￿(SA￿563)
  • Page 43 F48￿General￿Vehicle￿Electronics 4.￿Interior￿Lighting Index Explanation Footwell￿light,￿front￿left Lighting,￿decorative￿strip￿on￿passenger's￿side Footwell￿light,￿front￿right Glove￿box￿light Glove￿box￿switch Fuses￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Door￿pocket￿lighting,￿front￿right Door￿pocket￿lighting,￿front￿right Outside￿door￿handle￿light,￿front￿right Door￿entry￿lighting,￿front￿right Door￿contact,￿front￿right Door￿pocket￿lighting,￿rear￿right Door￿pocket￿lighting,￿rear￿right Outside￿door￿handle￿light,￿rear￿right Door￿entry￿lighting,￿rear￿right Door￿contact,￿rear￿right Luggage￿compartment￿light Footwell￿light,￿rear￿right Tailgate￿lock￿with￿switch Footwell￿light,￿rear￿left Door￿contact,￿rear￿left Door￿entry￿lighting,￿rear￿left Outside￿door￿handle￿light,￿rear￿left Interior￿light￿unit,￿rear Door￿pocket￿lighting,￿rear￿left Door￿pocket￿lighting,￿rear￿left Front￿interior￿light￿unit Door￿contact,￿front￿left Door￿entry￿lighting,￿front￿left Outside￿door￿handle￿light,￿front￿left Switch￿for￿make-up￿mirror￿light,￿left Switch￿for￿make-up￿mirror￿light,￿right Make-up￿mirror￿light,￿right...
  • Page 44 F48￿General￿Vehicle￿Electronics 4.￿Interior￿Lighting Index Explanation Make-up￿mirror￿light,￿left Door￿pocket￿lighting,￿front￿left Lighting,￿center￿stack Door￿pocket￿lighting,￿front￿left...
  • Page 45 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems In￿the￿F48￿one￿variant￿of￿the￿heating￿and￿air￿conditioning￿systems￿are￿available￿for￿the￿US: • IHKA￿2/1￿zones In￿the￿zone￿specification￿the￿first￿number￿denotes￿the￿number￿of￿controllable￿temperature￿zones (temperature￿selector￿wheels)￿and￿the￿second￿number￿denotes￿the￿number￿of￿controllable￿airflow volume￿and￿air￿distribution￿zones￿(separate￿fan￿settings). For￿the￿air-conditioning￿system￿of￿the￿F48￿the￿refrigerant￿R134a￿is￿used. Other￿equipment￿for￿the￿F48: • Seat￿heating￿for￿driver￿and￿front￿passenger￿(SA 494) • Steering￿wheel￿heating￿(SA￿248) • Mirror￿heating￿(standard￿equipment) • Heated￿washer￿jets￿(standard￿equipment) 5.1.￿Components￿and￿systems 5.1.1.￿Integrated￿automatic￿heating￿and￿air￿conditioning An￿automatic￿air-conditioning￿system￿is￿available￿for￿the￿F48￿as￿optional￿equipment￿(SA￿534). Contents: • Two-zone￿automatic￿air￿conditioning • 5￿climate￿controls￿(automatic￿programs)￿for￿setting￿the￿desired￿intensity • Condensation￿sensor • Automatic￿air￿recirculation￿control￿sensor￿(NOx,￿CO)￿for￿automatic￿air￿recirculation￿function • Combination￿filter￿with￿activated￿carbon￿for￿fresh￿air￿and￿air￿recirculation￿function • Personal￿Profiles￿are￿stored￿in￿a￿key-dependent￿way • MAX￿AC￿function￿(maximum￿cooling￿in￿passenger￿compartment) • Defrost￿function￿(quick￿removal￿of￿condensation) • Fresh￿air￿vent￿in￿the￿rear￿passenger￿compartment...
  • Page 46 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems Control￿panel F48￿IHKA￿control￿panel Index Explanation Defrost￿window￿glass￿and￿remove￿condensation Temperature,￿left Automatic￿program Switch￿off￿system Amount￿of￿air,￿AUTO￿intensity Display SYNC￿program Maximum￿cooling Temperature,￿right Air￿conditioning￿function Automatic￿air￿recirculation￿control/air￿recirculation￿function Seat￿heating,￿right Air￿distribution Seat￿heating,￿left Passenger￿compartment￿temperature￿sensor Heated￿rear￿window...
  • Page 47 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems Components Sensors￿and￿actuators￿which￿are￿connected￿to￿the￿Body￿Domain￿Controller￿(BDC)￿control￿unit￿are involved￿in￿the￿function￿of￿the￿heating￿and￿air-conditioning￿system￿in￿the￿F48: • Pressure￿sensor The￿BDC￿evaluates￿the￿pressure￿sensor￿signal￿and￿makes￿it￿available￿to￿the￿IHKA￿control￿unit via￿the￿K-CAN4. • Blower The￿IHKA￿request￿is￿sent￿via￿the￿LIN￿bus￿to￿the￿blower. • Air￿conditioning￿compressor The￿air￿conditioning￿compressor￿is￿controlled￿by￿the￿BDC￿by￿means￿of￿a￿pulse-width- modulated￿signal.￿The￿BDC￿can￿also￿actuate￿the￿air￿conditioning￿compressor￿clutch. However,￿the￿request￿is￿always￿made￿by￿the￿IHKA. • Automatic￿air￿recirculation￿control￿sensor The￿automatic￿air￿recirculation￿control￿sensor￿is￿read￿by￿the￿BDC￿via￿a￿local￿interconnect network￿bus.￿The￿IHKA￿assumes￿the￿automatic￿air￿flap￿control,￿which￿communicates with￿the￿BDC￿via￿K-CAN4. • Rain-light-solar-condensation￿sensor￿(RLSBS) The￿rain-light-solar-condensation￿sensor￿communicates￿with￿the￿BDC￿via￿a local￿interconnect￿network￿bus.
  • Page 48 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿IHKA...
  • Page 49 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems Index Explanation Battery￿power￿distribution￿box Automatic￿air￿recirculation￿control￿sensor Air￿conditioning￿compressor Refrigerant￿pressure￿sensor￿for￿switching￿off￿in￿the event￿of￿excess￿pressure￿in￿the￿refrigerant￿circuit Fuses￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Fuse￿in￿the￿power￿distribution￿box,￿BDC Temperature￿sensor￿for￿evaporator Stepper￿motor,￿blending￿flap,￿left Stepper￿motor,￿blending￿flap,￿right Stepper￿motor,￿fresh￿air/air￿recirculation￿function Stepper￿motor,￿flaps,￿footwell￿ventilation,￿left￿and￿right Stepper￿motor￿flaps￿for￿defrost￿function Ventilation￿temperature￿sensor,￿left Audio￿operating￿facility Operating￿unit￿for￿standard￿heating￿and￿air￿conditioning Integrated￿heating￿and￿air￿conditioning￿(IHKA) Electric￿auxiliary￿heater￿(only￿for￿diesel￿engines) Blower￿motor,￿passenger￿compartment Blower￿output￿stage,￿local￿interconnect￿network￿bus￿control Rain-light-solar-condensation￿sensor￿(RLSBS)
  • Page 50 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems 5.1.2.￿Heating￿and￿air-conditioning￿unit F48￿Heating￿and￿air-conditioning￿unit Index Explanation Air￿vent,￿top Temperature￿sensor,￿center￿vent Temperature￿sensor,￿footwell￿air￿outlet Heat￿exchanger Discharge￿of￿condensation￿from￿the￿heating￿and￿air-conditioning￿unit Stepper￿motor￿for￿blending￿flap Connector￿at￿the￿control￿unit￿for￿integrated￿heating￿/￿air-conditioning regulation/IHKA Sleeve,￿bulkhead Blower￿motor Blower￿output￿stage...
  • Page 51 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems F48￿Heating￿and￿air-conditioning￿unit Index Explanation Temperature￿sensor,￿center￿vent Stepper￿motor￿for￿footwell￿air￿outlet,￿left￿and￿right Stepper￿motor￿for￿defrost￿function Recirculated￿air￿flap Ambient￿air￿intake￿area￿at￿the￿bulkhead Stepper￿motor￿for￿recirculated￿air￿flap￿(with￿kinematics￿control) Service￿flap￿of￿two￿microfilters Stepper￿motor￿for￿blending￿flap Evaporator￿temperature￿sensor Ventilation￿flaps,￿air￿vent￿at￿feet Temperature￿sensor,￿footwell￿air￿outlet Air￿flaps,￿center￿vent...
  • Page 52 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems 5.1.3.￿Microfilter F48￿heating￿and￿air-conditioning￿unit,￿replacement￿of￿microfilter Index Explanation Upper￿microfilter Lower￿microfilter F48￿heating￿and￿air-conditioning￿unit,￿replacement￿of￿microfilter...
  • Page 53 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems Two￿microfilters￿are￿installed￿in￿the￿F48.￿The￿BMW￿repair￿instructions￿must￿be￿followed￿for￿the replacement￿of￿the￿microfilters. 5.1.4.￿Air/Water￿separation￿(Venturi￿adapter) F48￿air/water￿separation￿(Venturi￿adapter) So￿that￿no￿water￿enters￿the￿heating￿and￿air-conditioning￿unit,￿a￿cover￿(Venturi￿adapter)￿is￿installed before￿the￿air￿intake￿in￿the￿engine￿compartment. The￿fresh￿air￿drawn￿in￿is￿accelerated￿by￿the￿design￿of￿the￿Venturi￿adapter￿and￿redirected￿90°. Through￿this￿process￿the￿water￿separates￿at￿the￿cover￿and￿then￿drains￿off￿downwards.
  • Page 54 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems F48￿function￿of￿air/water￿separation￿(Venturi￿adapter) Index Explanation Cover Dirt￿trap Fresh￿air￿drawn￿in Separated￿condensate...
  • Page 55 F48￿General￿Vehicle￿Electronics 5.￿Heating/Air￿Conditioning￿Systems 5.1.5.￿ECO￿PRO￿mode￿of￿heating￿and￿air￿conditioning￿program In￿ECO￿PRO￿mode￿the￿heating￿and￿air￿conditioning￿functions￿can￿be￿configured.￿This￿also￿contributes to￿a￿reduction￿in￿fuel￿consumption￿thanks￿to￿the￿intelligent￿heating￿and￿air-conditioning￿management. F48￿ECO￿PRO￿mode The￿cooling￿system￿cannot￿be￿filled￿or￿bled￿in￿ECO￿PRO￿mode.￿Observe￿the￿BMW￿repair￿instructions.
  • Page 56 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions In￿the￿F48￿there￿are￿two￿distinct￿systems￿concerned￿with￿vehicle￿access: • Basic￿access,￿central￿locking￿system • Comfort￿Access￿(SA￿322) The￿entire￿locking￿and￿security￿function￿of￿the￿F48￿is￿integrated￿in￿the￿Body￿Domain￿Controller￿(BDC).
  • Page 57 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions F48￿system￿wiring￿diagram￿for￿locking￿and￿security￿functions...
  • Page 58 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions Index Explanation Digital￿Engine￿Electronics￿(DME) Engine￿compartment￿lid￿contact￿switch Electronic￿transmission￿control￿(EGS) Dynamic￿Stability￿Control￿(DSC) Fuse￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Remote￿control￿receiver Interior￿antenna Advanced￿Crash￿Safety￿Module￿(ACSM) Central￿locking￿button,￿left START-STOP￿button Ring￿antenna￿(transponder￿coil) Clutch￿switch￿(only￿for￿vehicles￿with￿manual￿gearbox) Steering￿column￿switch￿cluster￿(SZL) 6.1.￿Overview￿of￿functions The￿following￿locking￿and￿security￿functions￿are￿integrated￿in￿the￿Body￿Domain￿Controller: • Comfort￿Access • Central￿locking￿system • Terminal￿control • Electronic￿immobilizer...
  • Page 59 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions 6.1.1.￿Remote￿control￿receiver The￿remote￿control￿receiver￿is￿installed￿in￿the￿luggage￿compartment￿on￿the￿right. The￿radio￿signal￿received￿by￿the￿remote￿key￿is￿forwarded￿by￿the￿remote￿control￿receiver￿via￿a￿local interconnect￿network￿bus￿to￿the￿BDC. F48￿Installation￿location￿of￿the￿remote￿control￿receiver 6.2.￿Central￿locking￿system The￿function￿of￿the￿central￿locking￿system￿of￿the￿F48￿is￿based￿on￿that￿of￿current￿BMW￿models. With￿the￿introduction￿of￿the￿BDC,￿all￿relevant￿functions￿for￿the￿central￿locking￿system￿are￿handled by￿one￿control￿unit.￿The￿function￿is￿as￿follows: • The￿radio￿signal￿from￿the￿ID￿transmitter￿is￿received￿by￿the￿remote￿control￿receiver. • The￿signal￿causes￿the￿BDC￿to￿activate￿the￿central￿locking￿system￿and￿the￿interior￿lighting. • The￿BDC￿evaluates￿the￿status￿of￿all￿door￿contacts.￿In￿this￿way,￿for￿example,￿the￿vehicle￿can be￿prevented￿from￿being￿locked￿while￿the￿driver's￿door￿is￿open. • The￿status￿of￿the￿central￿locking￿system￿button￿is￿also￿evaluated￿by￿the￿BDC. The￿BDC￿activates￿the￿central￿locking￿system,￿depending￿on￿the￿status. • The￿BDC￿is￿responsible￿for￿the￿status￿recording￿and￿activation￿of￿the￿central locking￿system￿in￿the￿tailgate.
  • Page 60 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions 6.2.1.￿Special￿functions Automatic￿locking￿(Personal￿Profile) From￿a￿speed￿greater￿than￿16 km/h￿the￿vehicle￿is￿automatically￿locked. Different￿functions￿of￿the￿central￿locking￿system￿can￿be￿individually￿adjusted￿via￿the central￿information￿display. Automatic￿unlocking￿in￿the￿event￿of￿a￿crash As￿soon￿as￿the￿Body￿Domain￿Controller￿(BDC)￿receives￿a￿crash￿message￿from￿the￿Advanced￿Crash Safety￿Module￿(ACSM),￿the￿vehicle￿is￿unlocked. After￿the￿crash￿message,￿the￿central￿locking￿button￿and￿the￿remote￿control￿receiver￿are￿blocked￿for the￿central￿locking￿system￿function.￿Both￿are￿only￿reactivated￿after￿a￿terminal￿change. Selective￿unlocking The￿vehicle￿can￿also￿be￿selectively￿unlocked￿in￿the￿case￿of￿corresponding￿encoding.￿Initially,￿only the￿driver's￿door￿is￿unlocked.￿The￿rest￿of￿the￿vehicle￿is￿unlocked￿upon￿a￿subsequent￿request￿for unlocking.￿Depending￿on￿the￿operating￿point￿and￿the￿national-market￿version,￿the￿fuel￿filler￿flap￿is already￿unlocked￿after￿the￿first￿or￿second￿request. Convenient￿opening By￿operating￿the￿remote￿control￿button￿"Unlock"￿for￿approximately￿3￿seconds￿the￿convenient￿opening can￿start.￿The￿windows￿and,￿if￿installed￿the￿panorama￿glass￿roof￿(SA 402),￿are￿opened￿in￿the￿process. The￿button￿on￿the￿remote￿key￿must￿be￿held￿down￿until￿the￿process￿is￿complete. Convenient￿closing By￿operating￿the￿remote￿control￿button￿"Lock"￿for￿approximately￿3￿seconds￿the￿convenient￿closing can￿start.￿The￿windows￿and,￿if￿installed￿the￿panorama￿glass￿roof￿(SA 402),￿are￿closed￿in￿the￿process. The￿button￿on￿the￿remote￿key￿must￿be￿held￿down￿until￿the￿process￿is￿complete. If￿the￿vehicle￿has￿the￿optional￿equipment￿Comfort￿Access￿(SA 322),￿the￿windows￿and￿the￿panorama glass￿roof￿(SA 402)￿can￿be￿closed￿by￿pressing￿the￿grooved￿surface￿on￿the￿outer￿door￿handle.
  • Page 61 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions 6.2.2.￿System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿central￿locking￿system...
  • Page 62 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions Index Explanation Engine￿compartment￿lid￿contact￿switch Fuses￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Door￿lock,￿passenger's￿side,￿front Central￿locking￿button￿on￿passenger's￿side Door￿lock,￿passenger's￿side,￿rear Servo￿drive￿for￿fuel￿filler￿flap Remote￿control￿receiver Luggage￿compartment￿light Tailgate￿lock Door￿lock,￿driver's￿side,￿rear Door￿lock,￿driver's￿side,￿front Central￿locking￿button,￿driver's￿side Switch￿block￿for￿driver's￿side Button￿for￿tailgate￿activation Instrument￿cluster￿(KOMBI)
  • Page 63 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions The￿central￿locking￿button￿is￿designed￿as￿a￿rocker￿switch￿in￿the￿F48. F48￿central￿locking￿button Index Explanation Unlock￿vehicle Lock￿vehicle 6.3.￿Comfort￿Access With￿the￿optional￿equipment￿Comfort￿Access￿(SA￿322),￿the￿F48￿obtains￿access￿to￿the￿vehicle￿without a￿key.￿The￿Comfort￿Access￿function￿is￿already￿known￿from￿other￿BMW￿models.
  • Page 64 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions 6.3.1.￿System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿Comfort￿Access...
  • Page 65 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions Index Explanation Body￿Domain￿Controller￿(BDC) Fuse￿in￿the￿Body￿Domain￿Controller Door￿contact,￿passenger's￿side Outside￿door￿handle￿electronics,￿passenger's￿side Exterior￿antenna,￿passenger's￿side Exterior￿antenna,￿rear￿bumper Interior￿antenna,￿luggage￿compartment Exterior￿antenna,￿driver's￿side Interior￿antenna,￿rear Outside￿door￿handle￿electronics,￿driver's￿side Door￿contact,￿driver's￿side Interior￿antenna￿(front)
  • Page 66 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions 6.3.2.￿System￿components For￿the￿CA￿function,￿the￿Body￿Domain￿Controller￿activates￿the￿aerials￿for￿the￿exterior￿and￿passenger compartment. The￿outside￿door￿handle￿electronics￿TAGE￿are￿also￿read￿in￿by￿the￿BDC. F48￿installation￿location￿of￿the￿Comfort￿Access￿aerials Index Explanation Body￿Domain￿Controller￿(BDC) Outside￿door￿handle￿electronics,￿right Antenna￿for￿outer￿area,￿right Remote￿control￿receiver Antenna￿for￿outer￿area￿in￿the￿rear￿bumper Tailgate￿button Tailgate￿lock Interior￿antenna,￿luggage￿compartment Interior￿antenna,￿rear Antenna￿for￿outer￿area,￿left Outside￿door￿handle￿electronics,￿left Interior￿antenna￿(front) Digital￿Motor￿Electronics￿(DME) The￿function￿of￿Comfort￿Access￿is￿known￿from￿current￿BMW￿models.
  • Page 67 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions 6.4.￿Hands￿free￿tailgate￿opening In￿combination￿with￿the￿optional￿equipment￿Comfort￿Access￿(SA￿322)￿and￿automatic￿operation￿of tailgate￿(SA￿316),￿the￿F48￿has￿hands￿free￿tailgate￿opening.
  • Page 68 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions 6.4.1.￿System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿non-contact￿tailgate￿opening...
  • Page 69 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions Index Explanation Body￿Domain￿Controller￿(BDC) K-CAN￿terminator Automatic￿operation￿of￿tailgate￿(HKL) Control￿electronics￿for￿non-contact￿tailgate￿opening Exterior￿antenna,￿rear￿bumper Sensor￿at￿top￿for￿non-contact￿tailgate￿opening Sensor￿at￿bottom￿for￿non-contact￿tailgate￿opening Tailgate￿lock￿switch Acoustic￿warning￿device 6.4.2.￿Functional￿description￿of￿tailgate￿opening The￿operation￿is￿effected￿by￿means￿of￿targeted￿foot￿movement￿to￿and￿from￿the￿bumper.￿Two￿sensors detect￿the￿movement￿contactlessly￿via￿capacitive￿measurement. F48￿non-contact￿tailgate￿opening￿by￿foot￿movement Index Explanation Cross-section,￿rear￿bumper Evaluation￿electronics￿for￿non-contact￿tailgate￿opening Sensor￿at￿top￿for￿non-contact￿tailgate￿opening Sensor￿at￿bottom￿for￿non-contact￿tailgate￿opening...
  • Page 70 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions The￿following￿components￿are￿involved￿in￿the￿function: • Body￿Domain￿Controller • Tailgate￿lock • Evaluation￿electronics￿for￿non-contact￿tailgate￿opening • Automatic￿operation￿of￿tailgate￿(HKL) • Comfort￿Access￿antenna,￿bumper,￿rear • Two￿capacitive￿sensors • Acoustic￿warning￿device F48￿inputs/outputs￿for￿non-contact￿tailgate￿opening Index Explanation Capacitive￿sensors Evaluation￿electronics￿for￿non-contact￿tailgate￿opening Body￿Domain￿Controller￿(BDC) Exterior￿antenna,￿rear￿bumper Automatic￿operation￿of￿tailgate￿(HKL) Acoustic￿warning￿device Tailgate￿lock...
  • Page 71 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions F48￿sensors￿for￿non-contact￿tailgate￿opening Index Explanation Tailgate￿lock Comfort￿Access￿antenna,￿bumper,￿rear Evaluation￿electronics￿for￿non-contact￿tailgate￿opening Sensor￿at￿top￿for￿non-contact￿tailgate￿opening Sensor￿at￿bottom￿for￿non-contact￿tailgate￿opening The￿two￿sensors￿are￿connected￿to￿the￿evaluation￿electronics￿and￿constantly￿measure￿the￿capacity. A￿comparison￿of￿the￿time￿characteristic￿of￿the￿measured￿capacities￿permits￿the￿identification￿of￿a certain￿movement￿pattern. A￿targeted￿foot￿movement￿to￿and￿from￿the￿bumper￿can￿be￿detected￿herefrom.￿The￿top￿sensor￿detects the￿shin,￿the￿bottom￿sensor￿the￿toes. The￿detection￿range￿is￿between￿the￿rear￿lights. The￿sensors￿are￿secured￿in￿the￿inside￿of￿the￿rear￿bumper. The￿evaluation￿electronics￿evaluate￿the￿signals￿from￿the￿sensors￿and￿make￿this￿information￿available to￿the￿BDC￿via￿the￿local￿interconnect￿network￿bus.￿If￿there￿is￿a￿valid￿ID￿transmitter￿near￿the￿Comfort Access￿antenna￿in￿the￿rear￿bumper,￿the￿BDC￿initiates￿an￿opening￿of￿the￿tailgate. The￿tailgate￿opens￿regardless￿if￿it￿was￿locked￿or￿unlocked. The￿tailgate￿of￿the￿F48￿can￿also￿be￿closed￿again￿using￿the￿same￿foot￿movement￿as￿for￿opening. With￿the￿closing￿of￿the￿tailgate￿via￿the￿non-contact￿tailgate￿activation,￿a￿sound￿is￿output￿by￿an￿acoustic warning￿device,￿which￿is￿installed￿in￿the￿tailgate.
  • Page 72 F48￿General￿Vehicle￿Electronics 6.￿Locking￿and￿Security￿Functions F48￿acoustic￿warning￿device...
  • Page 73 F48￿General￿Vehicle￿Electronics 7.￿Alarm￿System 7.1.￿System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿alarm￿system...
  • Page 74 F48￿General￿Vehicle￿Electronics 7.￿Alarm￿System Index Explanation Engine￿compartment￿lid￿contact￿switch Fuses￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Door￿contact,￿passenger's￿side,￿front Door￿contact￿on￿passenger's￿side,￿rear Siren￿with￿tilt￿alarm￿sensor Tailgate￿lock￿contact Door￿contact,￿driver's￿side,￿rear Door￿contact,￿driver's￿side,￿front Roof￿function￿center￿(FZD) LED￿in￿the￿interior￿mirror The￿alarm￿system￿in￿the￿F48￿is￿optional￿equipment￿(SA￿302). The￿alarm￿system￿in￿the￿F48￿is￿equipped￿with￿an￿ultrasonic￿interior￿movement￿detector￿for￿monitoring the￿passenger￿compartment.￿The￿ultrasonic￿interior￿movement￿detector￿(USIS)￿is￿fully￿integrated￿in the￿roof￿function￿center￿(FZD). The￿door￿contacts,￿engine￿compartment￿lid￿switch￿and￿the￿opening￿of￿the￿tailgate￿are￿monitored￿by the￿Body￿Domain￿Controller.￿As￿soon￿as￿a￿status￿changes,￿the￿ultrasonic￿interior￿movement￿detector receives￿this￿information￿via￿the￿K-CAN2.￿In￿the￿event￿of￿an￿activated￿alarm￿system￿a￿siren￿with￿tilt alarm￿sensor￿is￿activated￿by￿the￿control￿unit￿in￿the￿event￿of￿a￿break-in. The￿SINE￿is￿connected￿to￿the￿roof￿function￿center￿via￿a￿local￿interconnect￿network￿bus. By￿operating￿the￿central￿locking￿button￿on￿the￿remote￿key￿twice,￿the￿tilt￿sensor￿and￿the￿interior movement￿detector￿are￿deactivated￿up￿to￿the￿next￿unlocking￿process. The￿status￿of￿the￿alarm￿system￿is￿displayed￿via￿the￿LED￿at￿the￿interior￿mirror.

  • Page 75: Introduction

    F48￿General￿Vehicle￿Electronics 8.￿Wash/Wipe￿System 8.1.￿Introduction The￿following￿wipe/wash￿functions￿are￿possible￿in￿the￿F48: • Intermittent￿wipes • Continuous￿wipe￿in￿interval￿stage￿1 • Continuous￿wipe￿in￿interval￿stage￿2 • Flick￿wipes Other￿equipment￿for￿the￿F48: • Washer￿jet￿heating￿(standard￿equipment) • Automatic￿mode￿via￿rain-light-solar-condensation￿sensor￿(SA￿521) 8.2.￿Operation The￿F48￿has￿a￿newly￿designed￿wiper￿lever.￿The￿rear￿wiper￿is￿no￿longer￿activated￿by￿pressing￿the complete￿wiper￿lever,￿but￿using￿a￿rotary￿switch. F48￿wash/wipe￿switch Index Explanation Windscreen￿wiper,￿wiper￿stages Interval￿setting￿or￿for￿rain￿sensor￿(SA￿521)￿sensibility￿setting Rotary￿switch￿for￿rear￿window￿wiper￿function Automatic￿button,￿for￿rain￿sensor￿(SA￿521)
  • Page 76 F48￿General￿Vehicle￿Electronics 8.￿Wash/Wipe￿System 8.3.￿System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿wash/wipe￿system...
  • Page 77 F48￿General￿Vehicle￿Electronics 8.￿Wash/Wipe￿System Index Explanation Heated￿washer￿jet,￿left￿(SA￿313) Heated￿washer￿jet,￿right￿(SA￿313) Washer￿fluid￿level￿switch Electric￿motor,￿windscreen￿washer￿pump Fuse￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Fuse￿in￿the￿power￿distribution￿box￿Body￿Domain￿Controller Wiper￿motor,￿rear Steering￿column￿switch￿cluster￿(SZL) Instrument￿cluster￿(KOMBI) Rain-light-solar-condensation￿sensor￿(RLSBS) Wiper￿motor,￿front...
  • Page 78 F48￿General￿Vehicle￿Electronics 9.￿Steering￿Wheel￿Heating 9.1.￿System￿wiring￿diagram F48￿system￿wiring￿diagram￿for￿steering￿wheel￿heating...
  • Page 79 F48￿General￿Vehicle￿Electronics 9.￿Steering￿Wheel￿Heating Index Explanation Vibration￿actuator Fuse￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment Body￿Domain￿Controller￿(BDC) Fuse￿in￿the￿Body￿Domain￿Controller Multifunction￿steering￿wheel￿buttons,￿right Horn￿switch Multifunction￿steering￿wheel￿buttons,￿left Button,￿steering￿wheel￿heating Steering￿column￿switch￿cluster￿(SZL) Steering￿wheel￿module Heating￿element￿for￿the￿steering￿wheel￿heating The￿F48￿receives￿a￿steering￿wheel￿heating￿(SA￿248)￿as￿optional￿equipment.￿The￿steering￿wheel heating￿is￿only￿available￿in￿conjunction￿with￿the￿leather￿sports￿steering￿wheel￿(SA￿255).
  • Page 80 Bayerische￿Motorenwerke￿Aktiengesellschaft Qualifizierung￿und￿Training Röntgenstraße￿7 85716￿Unterschleißheim,￿Germany...

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