BMW B58TU Reference Manual page 23

B58TU￿Engine
4.￿Cooling￿System
Index
A
B
C

%

x
1
The￿diagram￿shows￿the￿switching￿logic￿of￿the￿electric￿split￿cooling￿valve.￿Depending￿on￿the￿operating
condition￿and￿coolant￿temperature￿of￿the￿engine,￿as￿well￿as￿the￿driver's￿desired￿load,￿the￿Digital￿Motor
Electronics￿(DME)￿releases￿the￿coolant￿access￿from￿the￿crankcase￿to￿a￿greater￿or￿lesser￿extent￿via￿the
rotary￿valve￿of￿the￿split￿cooling￿valve.￿The￿coolant￿now￿also￿flows￿through￿the￿crankcase￿and￿cools
components.
A￿bleeding￿procedure￿in￿line￿with￿the￿repair￿instructions￿is￿required￿following￿a￿part￿exchange￿in￿the
cooling￿system￿or￿refilling￿of￿the￿cooling￿system.￿Filling￿without￿a￿vacuum￿filler￿device￿(watering
can￿filling)￿is￿not￿approved￿￿There￿is￿a￿risk￿of￿engine￿damage￿in￿case￿of￿failure￿to￿comply￿￿The￿filling
specification￿must￿be￿observed￿
Operation￿of￿the￿vehicle￿is￿not￿permitted￿without￿completing￿the￿entire￿filling￿and￿bleeding￿routine.
There￿is￿a￿risk￿of￿functional￿limitations￿or￿overheating.
4.2.￿Heat￿management￿module
The￿function￿of￿the￿heat￿management￿module￿is￿similar￿to￿that￿of￿the￿heat￿management￿module￿of￿the
B58￿engine.
B58TU￿engine￿heat￿management￿module
18
Explanation
End￿stop
Delivery￿position
End￿stop
Valve￿opening￿in￿%
Rotary￿valve￿position￿in￿degrees,￿angle￿of￿rotation
Rotary￿valve