With plug-in hybrid engines

The plug-in hybrid system has 2 auxiliary batteries: one at the front and one at the rear of the vehicle.

Replacing the auxiliary batteries

Contact a CITROËN dealer or a qualified workshop.

Jump-starting another vehicle

Do not start or jump-start another vehicle using the vehicle's auxiliary batteries.

Access to the auxiliary batteries

Front

The front battery is located under the engine bonnet.

To access the (+) terminal:

► Unlock the bonnet by operating the interior release, then the exterior release.

► Lift the bonnet.

(+) Positive terminal with a quick-release clamp.

(-) Negative terminal.

The negative terminal of the battery is not accessible, so a remote earth point is located near the battery.

Rear

The rear battery is located in the boot.

To access the battery:

► Lift the boot floor.

(+) Positive terminal, protected by a red plastic cover (not accessible).

(-) Negative terminal with a black quick-connect fitting.

Charging the front battery with a battery charger

To ensure optimum service life of the front battery, it is essential to keep its charge at a sufficient level.

In some cases, it may be necessary to charge the front battery:

- Vehicle used mainly for short journeys.

- Before a prolonged period of immobilisation of several weeks.

Consult a CITROËN dealer or a qualified workshop.

To charge the vehicle's front battery yourself, use only a charger compatible with lead-acid batteries, with a nominal voltage of 12 V.

Follow the operating instructions supplied by the charger manufacturer.

Never reverse the polarities.

It is not necessary to disconnect the battery.

► Switch off the ignition.

► Switch off all electrical consumers (radio, lights, wipers, etc.).

► Switch off charger B before connecting the cables to the battery, to avoid any dangerous spark.

► Check that the charger cables are in good condition.

► If fitted, lift the plastic cover on the (+) terminal.

► Connect the cables of charger B as follows:

• The red positive (+) cable to the (+) terminal of battery A.
• The black negative (-) cable to earth point C on the vehicle.

At the end of the charging operation, switch off charger B before disconnecting the cables from battery A.

Disconnecting / Reconnecting the auxiliary batteries

Procedure for disconnecting / reconnecting the auxiliary batteries when the vehicle will be immobilised for a long period.

Before disconnecting the auxiliary batteries:

► Open the driver's door and the boot.

► Close all other openings.

► Switch off all electrical consumers (radio, wipers, lights, etc.).

► Switch off the ignition and wait for the READY indicator to go out.

► Observe a waiting time of 4 minutes.

Never reverse the order of the steps for disconnecting and reconnecting the auxiliary batteries - Risk of irreversible damage!

Disconnecting

Rear battery:

► Disconnect the (-) terminal by operating the black quick-connect fitting.

Front battery:

► Disconnect the (+) terminal by releasing the red quick-release clamp:

• Raise lever A fully to release clamp B.
• Remove clamp B by lifting it off.

Reconnecting

Front battery:

► Connect the positive (+) terminal by attaching the red quick-release clamp:

• Raise lever A fully.
• Refit the open clamp B onto the positive (+) terminal.
• Press clamp B down until it stops.
• Lower lever A to lock clamp B in place.

Rear battery:

► Connect the negative (-) terminal by operating the black quick-release connector.

After reconnecting

After reconnecting the battery, switch on the ignition and wait 1 minute before starting, to allow the electronic systems to initialise.

If minor malfunctions persist after this procedure, contact a CITROËN dealer or a qualified workshop.

Refer to the relevant section to reset the following equipment:

- Remote control key or electronic key (depending on version).

- Sunroof and electric sunblind.

- Electric windows.

- Date and time.

- Stored radio stations.

After reconnecting the battery, the message “Collision risk detection system fault” appears in the instrument panel when the ignition is switched on. This is normal. The message disappears while driving.