2021 CITROEN C4 AIRCROSS check engine

1
17
Monitoring
C4-Aircross-add_en_Chap01_controle-de-marche_ed01-2015
Warning/indicator lampis onCauseAction / Observations
Cruise control fixed This comes on when the cruise control has been activated. Press the "ON/OFF" button to activate/deactivate the cruise control.
Active stability control and traction control (ASC/TCL)
flashing. Operation of the ASC/ TCL systems. The systems optimise traction and improve the directional stability of the vehicle. Adapt your driving and moderate your speed.
fixed. Fault in the ASC/ TCL systems. Have it checked by a CITROËN dealer or a qualified workshop.
Stop & Star t (Auto Stop & Go) system
fixed. When the vehicle stops (red lights, traffic jams, ...) the Stop & Start (AS&G) function has put the engine into STOP mode.
The warning lamp goes off and the engine restarts automatically in START mode, as soon as you want to move off.
flashes for a few seconds, then goes of f.
STOP mode is temporarily unavailable. See "Stop & Start (AS&G) system" for special cases with STOP mode and START mode.
Diesel engine pre-heating fixed. The engine is cold and: - the ignition switch is at the ON position (ignition on), or - the START/STOP starting button has been pressed (ignition on).
With key starting, wait until the warning lamp has gone off before starting. With the Keyless Entry and Starting system, the engine will only start after the warning lamp has gone off. The duration for which the warning lamp is on is determined by the climatic conditions (up to 30 seconds in severe weather). If the engine does not start, switch the ignition off and then on again and wait again until the warning lamp goes off, then start the engine.

113
4
Driving
C4-Aircross-add_en_Chap04_conduite_ed01-2015
The system is reactivated automatically at every new start using the key or the START/STOP button.
Reactivation
Press the "AS &G O FF " switch again. The system is active again; this is confirmed by the "AS &G O FF " warning lamp going off in the instrument panel or instrument panel screen.
Operating fault
In the event of a malfunction with the system, the "AS &G O FF " warning lamp flashes in the instrument panel or instrument panel screen, and the system no longer operates. Have it checked by a CITROËN dealer or a qualified workshop.
This system requires a specific battery with a special specification and technology (reference numbers available from a CITROËN dealer or a qualified workshop).
Fitting a battery not listed by CITROËN introduces the risk of malfunction of the system.
Maintenance
The "Auto Stop & Go" system makes use of advanced technology. All work on this type of battery must be done only by a CITROËN dealer or a qualified workshop.
In the event of a fault in STOP mode, the vehicle may stall. The following warning lamps come on in the instrument panel or instrument panel screen:
It is then necessary to switch off the ignition, then restart the engine using the key or the
START/STOP button.

215
8
Checks
C4-Aircross-add_en_Chap08_verifications_ed01-2015
Avoid prolonged contact of used oil or
fluids with the skin. Most of these fluids are harmful to health or indeed very corrosive.
Do not discard used oil or fluids into sewers or onto the ground. Take used oil to a CITROËN dealer or a qualified workshop (France) or to an authorised waste disposal site.
Used products
Topping up
The reservoir must be topped up without delay by a CITROËN dealer or a qualified workshop.
Additive level
(1.6 HDi 110 Diesel versions
with particle filter)
The additive reservoir low level is indicated by the display of this message.
Fluid specifi cation
For optimum cleaning, this fluid must not be topped up with or replaced with plain water.
Screenwash and headlamp
wash fluid
To check or top up the fluid, stop the vehicle, apply the parking brake and switch off the engine.
 Open the bonnet and secure it with the stay.  Open the filler cap for the screenwash reservoir.  Check the level using the gauge, then top-up if necessary.  Refit the cap on the reservoir and close the bonnet.
In wintry conditions, the use of fluid with an ethyl alcohol or methanol base is recommended.

1
17
Monitoring
C4-Aircross-add_en_Chap01_controle-de-marche_ed01-2015
Warning/indicator lampis onCauseAction / Observations
Cruise control fixed This comes on when the cruise control has been activated. Press the "ON/OFF" button to activate/deactivate the cruise control.
Active stability control and traction control (ASC/TCL)
flashing. Operation of the ASC/ TCL systems. The systems optimise traction and improve the directional stability of the vehicle. Adapt your driving and moderate your speed.
fixed. Fault in the ASC/ TCL systems. Have it checked by a CITROËN dealer or a qualified workshop.
Stop & Star t (Auto Stop & Go) system
fixed. When the vehicle stops (red lights, traffic jams, ...) the Stop & Start (AS&G) function has put the engine into STOP mode.
The warning lamp goes off and the engine restarts automatically in START mode, as soon as you want to move off.
flashes for a few seconds, then goes of f.
STOP mode is temporarily unavailable. See "Stop & Start (AS&G) system" for special cases with STOP mode and START mode.
Diesel engine pre-heating fixed. The engine is cold and: - the ignition switch is at the ON position (ignition on), or - the START/STOP starting button has been pressed (ignition on).
With key starting, wait until the warning lamp has gone off before starting. With the Keyless Entry and Starting system, the engine will only start after the warning lamp has gone off. The duration for which the warning lamp is on is determined by the climatic conditions (up to 30 seconds in severe weather). If the engine does not start, switch the ignition off and then on again and wait again until the warning lamp goes off, then start the engine.

113
4
Driving
C4-Aircross-add_en_Chap04_conduite_ed01-2015
The system is reactivated automatically at every new start using the key or the START/STOP button.
Reactivation
Press the "AS &G O FF " switch again. The system is active again; this is confirmed by the "AS &G O FF " warning lamp going off in the instrument panel or instrument panel screen.
Operating fault
In the event of a malfunction with the system, the "AS &G O FF " warning lamp flashes in the instrument panel or instrument panel screen, and the system no longer operates. Have it checked by a CITROËN dealer or a qualified workshop.
This system requires a specific battery with a special specification and technology (reference numbers available from a CITROËN dealer or a qualified workshop).
Fitting a battery not listed by CITROËN introduces the risk of malfunction of the system.
Maintenance
The "Auto Stop & Go" system makes use of advanced technology. All work on this type of battery must be done only by a CITROËN dealer or a qualified workshop.
In the event of a fault in STOP mode, the vehicle may stall. The following warning lamps come on in the instrument panel or instrument panel screen:
It is then necessary to switch off the ignition, then restart the engine using the key or the
START/STOP button.

215
8
Checks
C4-Aircross-add_en_Chap08_verifications_ed01-2015
Avoid prolonged contact of used oil or
fluids with the skin. Most of these fluids are harmful to health or indeed very corrosive.
Do not discard used oil or fluids into sewers or onto the ground. Take used oil to a CITROËN dealer or a qualified workshop (France) or to an authorised waste disposal site.
Used products
Topping up
The reservoir must be topped up without delay by a CITROËN dealer or a qualified workshop.
Additive level
(1.6 HDi 110 Diesel versions
with particle filter)
The additive reservoir low level is indicated by the display of this message.
Fluid specifi cation
For optimum cleaning, this fluid must not be topped up with or replaced with plain water.
Screenwash and headlamp
wash fluid
To check or top up the fluid, stop the vehicle, apply the parking brake and switch off the engine.
 Open the bonnet and secure it with the stay.  Open the filler cap for the screenwash reservoir.  Check the level using the gauge, then top-up if necessary.  Refit the cap on the reservoir and close the bonnet.
In wintry conditions, the use of fluid with an ethyl alcohol or methanol base is recommended.