Battery
Procedure for charging a flat battery or starting the engine from another battery.

! The presence of this label, particularly with Stop & Start, indicates the use of a 12 V lead-acid battery with specific technology and characteristics, which requires intervention by the CITROËN network if it is disconnected or replaced.
Failure to observe these instructions may cause premature battery wear.
After refitting the battery, Stop & Start will only become active after the vehicle has remained stationary continuously, for a period that depends on weather conditions and the battery charge state (up to approximately 8 hours).Accessing the battery

Accessing the battery
The battery is located under the engine bonnet.
- To access it:
- open the bonnet using the interior release lever, then the exterior one,
- fit the bonnet prop rod,
- remove the plastic cover to access the two terminals,
- unclip the fuse box to remove the battery, if necessary.
V6 HDi engine

V6 HDi engine
The battery is located in the boot, under the left wing trim.
To access it:
- open the boot,
- open the hatch and remove the battery.
Starting from another battery

Starting from another battery
- Lift the pegs to remove the front left headlamp cover (V6 HDi engine).
- Connect the red cable to the (+) terminal of the discharged battery A, then to the (+) terminal of the booster battery B.
- Connect one end of the green or black cable to the (-) terminal of booster battery B.
V6 HDi engine: the (-) terminal is under the red cover.
- Connect the other end of the green or black cable to earth point C on the vehicle with the discharged battery.
- Operate the starter and let the engine run.
- Wait for the engine to return to idle, then disconnect the cables.
Charging the battery with a battery charger
Charging the Stop & Start battery does not require disconnection.
- Disconnect the battery from the vehicle.
- Follow the charger manufacturer's instructions.
- Reconnect, starting with the (-) terminal.
- Check that the terminals and cable ends are clean. If they are covered in sulphate (whitish or greenish deposit), remove them and clean them.
! Do not disconnect the terminals while the engine is running.
Do not charge the batteries without disconnecting the terminals.
Do not touch the clamps during the operation.
Do not lean over the batteries.
Disconnect the cables in the reverse order of connection, taking care that they do not touch each other.
Before disconnecting
Before disconnecting the battery, wait 2 minutes after switching off the ignition.
Close the windows and doors before disconnecting the battery.
! After reconnecting
After reconnecting the battery, switch on the ignition and wait 1 minute before starting, to allow the electronic systems to initialise. However, if slight malfunctions persist after this procedure, consult the CITROËN network.
Refer to the relevant section. You must reset the following yourself:
- the remote key,
- the panoramic glass roof blind,
- the panoramic glass roof blind,
Test yourself
A quick Citroen C5 Aircross quiz: every answer comes with an explanation and a link to the manual page.