CITROEN C4 Handbook page 19

Front passenger airbag (OFF)
Fixed.
The front passenger airbag is deactivated.
The control is set to the "OFF" position.
A "rearward facing" child seat can be installed,
unless there is a fault with the airbags (Airbags
warning lamp on).
Low fuel level (Petrol or Diesel)
Fixed, with the reserve level shown in red,
accompanied by an audible signal and
the display of a message.
When it first comes on, you have approximately
6 litres of fuel remaining in the tank (reserve).
Until the fuel level is topped up, this alert will
be repeated every time the ignition is switched
on, with increasing frequency as the fuel level
decreases and approaches zero.
Refuel without delay to avoid running out of fuel.
Never drive until completely empty, as
this could damage the emissions control and
injection systems.
Low traction battery level (Electric)
Fixed, accompanied by an audible signal.
The state of charge of the traction battery
is low.
View the remaining range.
Put the vehicle on charge as soon as possible.
Tortoise mode with limited driving range
(Electric)
Fixed.
The state of charge of the traction battery
is critical.
The engine power gradually decreases.
You must put the vehicle on charge.
If the warning lamp remains lit, carry out (2).
Pedestrian horn (Electric)
Fixed.
Horn fault detected.
Carry out (3).
Collision Risk Alert/Active Safety Brake
Fixed, accompanied by the display of a
message.
The system has been deactivated via the touch
screen.
Flashing.
The system activates and brakes the
vehicle momentarily to reduce the speed of
collision with the vehicle in front.
For more information, refer to the Driving
section.
Fixed, accompanied by a message and
an audible signal.
The system has a fault.
Carry out (3).
Fixed.
The system has a fault.
If these warning lamps come on after the engine
is switched off and then restarted, carry out (3).
Fixed.
The system is deactivated
temporarily because the driver and/or front
passenger (depending on version) has been
detected as present but the corresponding seat
belt has not been fastened.
Dashboard instruments
Lane keeping assist
Fixed.
The system has been automatically
deactivated or placed on standby.
Flashing.
You are about to cross a broken
lane marking without operating the direction
indicators.
The system is activated, then corrects the
trajectory if it detects a risk of unintentionally
crossing a line or hard shoulder (depending on
version).
For more information, refer to the Driving
section.
Fixed.
The system has a fault.
Carry out (3).
Lane positioning assist
Fixed, accompanied by the
Service warning lamp.
The system has a fault.
Carry out (3).
Stop & Start (Petrol or Diesel)
Fixed, accompanied by the display of a
message.
The Stop & Start system has been deactivated
manually.
The engine will not switch off at the next traffic
stop.
Reactivate the system via the touch screen.
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