Warning lights
On the Citroën C6 (I generation, 2005–2012), warning lamps play a central role in safety and vehicle diagnostics. This chapter explains in detail the meaning of each lamp, from STOP, SERVICE, ESP and ABS to airbag and fuel gauge. Warning symbols for doors, seat belts, exhaust system and tyre pressure are also clearly presented. Drivers receive clear recommendations for action in the event of a fault, including instructions on what to do in an emergency and on contacting a workshop. The combination of symbols, displays and audible signals ensures that no warning is overlooked, which is essential for safe driving in the Citroën C6.
These warning lamps may be accompanied by a message and/or an audible warning signal
Warning lamp STOP
If the warning lamp comes on, stop the vehicle and switch off the engine immediately. The message STOP appears on the display and the head-up display at the same time as this warning lamp.
Contact a CITROËN dealer or a qualified workshop immediately.
Warning lamp for detecting an open door or opening
This warning lamp comes on with the engine running to indicate that one or more doors and/or the boot lid are open.
Warning lamp for electric parking brake, brake fluid level and brake force distributor fault
With the engine running, this warning lamp indicates that the parking brake is not released or not fully released, that the brake fluid level is too low, or that there is a fault in the braking system.
If the warning lamp stays on although the parking brake is released, stop immediately and contact a CITROËN dealer or a qualified workshop.
See "Brakes".
Warning lamp SERVICE
This warning lamp stays on continuously in the event of a serious malfunction.
Contact a CITROËN dealer or a qualified workshop immediately.
This warning lamp comes on briefly in the event of minor faults.
If necessary, contact a CITROËN dealer or a qualified workshop.
For the source of the corresponding warning message, see "Warning message log" (see "Multifunction display" or NaviDrive).
Warning lamp ABS
The ABS warning lamp comes on when the ignition is switched on and must go out after a few seconds.
If the warning lamp does not go out, this may indicate a system malfunction. See "Brakes".
Flat tyre(s)
This warning lamp coming on indicates a fault with one or more tyres.
A message appears on the display showing which tyre(s) is/are flat. Contact a CITROËN dealer or a qualified workshop.
Warning lamp ESP/ASR
In operation
The warning lamp flashes when the ESP or ASR system is active.
In the event of a malfunction
If the warning lamp comes on while the vehicle is moving, this indicates a system malfunction.
Contact a CITROËN dealer or a qualified workshop.
Deactivation
The warning lamp coming on and the ESP control being pressed indicate that the system has been deactivated.
Warning lamp for electric parking brake
With the engine running, this warning lamp comes on to indicate a malfunction of the electric parking brake. The brake is not correctly applied. Select park (P) on the gearbox.
Contact a CITROËN dealer or a qualified workshop immediately.
Warning lamp for driver's seat belt not fastened
When this warning lamp comes on, it indicates to the driver that the seat belt is not fastened. When the vehicle is stationary, it stays on until the belt is fastened.
See "Warning lamp for seat belts not fastened".
Diesel engine glow plug warning lamp
See procedure for starting the engine.
See "Starting".
Low fuel level indicator
If it stays on continuously on level ground, the fuel tank still contains approximately 8 litres.
Depending on driving style and engine, the remaining fuel is sufficient for approximately 50 km. Refuel fully at the next opportunity.
The tank holds approximately 72 litres.
Never run the tank completely dry. This could damage the exhaust gas treatment system and the injection system.
Warning lamp for exhaust gas treatment system
If the warning lamp flashes or comes on while driving, this indicates a fault in the exhaust gas treatment.
Contact a CITROËN dealer or a qualified workshop immediately.
Low beam
A flashing of this warning lamp indicates a malfunction of the cornering Bi-Xenon headlamps.
Contact a CITROËN dealer or a qualified workshop.
High beam
See "Audible warning system".
Left turn indicator
See "Audible warning system".
Passenger airbag deactivation
See "Airbags".
Parking lights
See "Audible warning system".
Fog Lights
See "Audible warning system".
Fog lamp
See "Audible warning system".
Right turn indicator
See "Audible warning system".
When the hazard warning lights are on, all turn indicators flash at the same time.
When the ignition is switched on, the following appears on the instrument cluster:
- First, in sequence:
- Service interval indicator.
- Total and trip odometer.
The warning lamps of the Citroën C6 provide the driver with important information about the condition of the vehicle. Whether warnings relate to brakes, oil level or tyre pressure, the indicators help to recognise potential hazards early and respond accordingly. This considerably increases safety in everyday driving.
Thanks to their clear arrangement and logical symbols, the warning lamps are easy to understand. In terms of user-friendliness and vehicle safety, the Citroën C6 excels here, making it ideal for anyone who relies on a dependable warning system.
These well-designed systems make the Citroën C6 a vehicle that combines technology and safety ideally. A quick glance at the indicators is enough to keep you fully informed on the road.
Test yourself
A quick Citroen C6 quiz: every answer comes with an explanation and a link to the manual page.