Citroen C5 Aircross (2017- 2024) - Owner's Manual

Red warning lamps

~2min read

STOP

Steady, together with another warning lamp, accompanied by a message and an audible signal.

A serious fault with the engine, braking system, power steering, automatic gearbox or a major electrical fault has been detected.

Carry out (1), then (2).

Engine oil pressure

Steady.

The engine lubrication circuit has failed.

Carry out (1), then (2).

Maximum coolant temperature

Steady.

The cooling system temperature is too high.

Carry out (1), then wait for the engine to cool down before topping up the level, if necessary.

If the problem persists, carry out (2).

System fault (Plug-in hybrid)

Steady.

The plug-in hybrid system has a fault.

Carry out (1), then (2).

Charging cable connected (Plug-in hybrid)

Steady as soon as the ignition is switched on.

The charging cable is connected to the vehicle's charging socket.

Steady as soon as the ignition is switched on, with a message.

The vehicle cannot be started while the charging cable is connected to the vehicle's charging socket.

Disconnect the charging cable and close the flap.

12 V battery charging

Steady.

The battery charging circuit has a fault (e.g. dirty terminals, alternator belt slack or broken).

Carry out (1).

If the electric parking brake no longer operates, immobilise the vehicle:

► With manual gearbox, engage a gear.

► With automatic gearbox, place chocks against one of the wheels.

Clean and tighten the terminals. If the warning light does not go out when the engine starts, carry out (2).

Door(s) open

Steady, with a message identifying the open door.

An audible signal accompanies the warning if speed is above 10 km/h.

A door or the boot is not properly closed.

Seat belt not fastened / unfastened

Steady or flashing, with a rising audible signal.

A seat belt has not been fastened or has been unfastened.

Electric parking brake

Steady.

The electric parking brake is applied.

Flashing.

The electric parking brake application or release has a fault.

Carry out (1): park on level ground (horizontal).

With manual gearbox, engage a gear.

With automatic gearbox, select P mode.

Switch off the ignition and carry out (2).

Braking

Steady.

The brake fluid level in the braking circuit has dropped significantly.

Carry out (1), then top up with fluid meeting the manufacturer's recommendations. If the problem persists, carry out (2).

Steady.

The Electronic Brakeforce Distribution (EBD) system is faulty.

Carry out (1), then (2).

Test yourself

A quick Citroen C5 Aircross quiz: every answer comes with an explanation and a link to the manual page.