CITROËN C4 Handbook page 67

Back-up key
Unlocking / Locking using the integral key with Keyless
Entry and Starting
The integral key is used to lock and unlock the
vehicle when the electronic key cannot operate:
- cell battery flat, vehicle battery discharged
or disconnected, ...
- vehicle located in an area with strong
electromagnetic signals.
F Maintain a pull on button 1, to extract the
integral key 2.
If the alarm is activated, the audible
signal triggered on opening a door
with the key (integral with the remote
control) will stop when the ignition is
switched on.
Locking the driver's door
F Insert the integral key in the door lock, then
turn it to the rear.
Unlocking the driver's door
F Insert the integral key in the door lock, then
turn it to the front.
Access
2
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