Citroen C4: Back-up procedures

• Lost keys, remote control, electronic key
• Changing the battery

Lost keys, remote control, electronic key

Go to a CITROËN dealer with the vehicle's registration certificate, your personal identification documents and if possible, the label bearing the key code.

The CITROËN dealer will be able to retrieve the key code and the transponder code, enabling a new key to be ordered.

Complete unlocking/locking of the vehicle with the key

Use this procedure in the following situations:

- Remote control battery discharged.

- Remote control malfunction.

- Vehicle battery discharged.

- Vehicle in an area subject to strong electromagnetic interference.

In the first case, change the remote control battery.

In the second case, reinitialise the remote control.

Refer to the corresponding sections.

► Insert the key into the door lock.

► Turn the key towards the front or the rear to unlock or lock the vehicle.

If the vehicle is fitted with an alarm, it will not be activated when locking with the key.

If the alarm is activated, the siren sounds when the door is opened; switch on the ignition to stop it.

Central locking not functioning

Use these procedures in the following cases:

- Central locking malfunction.

- Battery disconnected or discharged.

In the event of a malfunction of the central locking system, the battery must be disconnected to ensure that the vehicle is locked fully.

Front left-hand door

► Insert the key into the lock and turn it towards the front or rear of the vehicle to lock or unlock the door.

Other doors

 Unlocking

► Pull the interior door opening control.

 Locking

► Open the doors.

► For the rear doors, check that the child lock is not on.

Refer to the corresponding section.

► Gently insert the key into the latch located in the door lock, then turn the latch an eighth of a turn towards the outside of the door.

► Close the doors and check from the outside that the vehicle is locked.

Changing the battery

If the battery is flat, this warning lamp comes on, accompanied by an audible signal and the display of a message.

  Battery type: CR2032/3 volts.

Without Keyless Entry and Start

With Keyless Entry and Start

► Unclip the cover by inserting a small screwdriver in the slot and lift the cover.

► Remove the flat battery from its housing.

► Put the new battery in place, respecting the polarity. Start by inserting it into the contacts located in the corner, then clip the cover onto the unit.

► Reinitialise the remote control.

For more information on Reinitialising the remote control, refer to the corresponding section.

Do not throw remote control batteries away, as they contain metals that are harmful to the environment. Take them to an approved disposal point.

This equipment contains a button type battery.

Do not swallow the battery. Risk of chemical burns! Swallowing the battery can cause serious internal burning in only 2 hours and can be fatal.

If batteries have been swallowed or inserted into a part of the body, seek immediate medical advice.

Keep new and used batteries out of the reach of children.

If the battery compartment does not close properly, stop using the product and keep it out of the reach of children.

Risk of explosion if the battery is replaced with an incorrect type! Replace the battery with the same type.

Risk of explosion or leaking of inflammable liquid or gas! Do not use in/store in/place in an environment where the temperature is extremely high or where the pressure is extremely low due to very high altitude.

Do not try to burn, crush or cut a used battery.

Reinitialising the remote control

Following replacement of the battery or in the event of a fault, it may be necessary to reinitialise the remote control.

Without Keyless Entry and Start

► Switch the ignition off.

► Turn the key to position 2 (Ignition on).

► Immediately press the closed padlock button for a few seconds.

► Switch off the ignition and remove the key from the ignition switch.

The remote control is now fully operational again.

With Keyless Entry and Start

► Insert the mechanical key (incorporated into the remote control) into the lock to open the vehicle.

► Place the electronic key against the back-up reader on the steering column and hold it there until the ignition is switched on.

► With a manual gearbox, place the gear lever in neutral then fully depress the clutch pedal.

► With an automatic gearbox or drive selector, while in mode P, depress the brake pedal.

► Switch on the ignition by pressing the START/STOP button.

If the fault persists after reinitialisation, contact a CITROËN dealer or a qualified workshop without delay.