Citroen C3: Back-up procedures / 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.
Driver's door
Turn the key towards the rear of the vehicle
to lock it, or towards the front to unlock it.
Passenger 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.

- Remove the black cap, located on the edge
of the door, using the key.
- Insert the key into the socket without forcing
it, then turn the latch towards the inside of the
door.
- Remove the key and refit the black cap.
- Close the doors and check from the outside
that the vehicle is locked.
Lost keys, remote control, electronic key
Visit a CITROËN dealer with the vehicle's
registration certificate, a personal identification
document and, if possible, the label bearing the
key code...
A message is displayed on the instrument panel
when the battery needs changing.
Without Keyless Entry and Starting
Battery type: CR2032 / 3 volts.
With Keyless Entry and Starting
Battery type: CR2032 / 3 volts...
Other information:
(Depending on version.)
On versions fitted with an electric oil level
indicator, the engine oil level status is displayed
on the instrument panel for a few seconds upon
switching the ignition on, after the servicing
information.
The level read will only be
correct if the
vehicle is on level ground and the engine
has been off for more than 30 minutes...
Unclip the tool storage box (standard spare
wheel).
Slacken the central nut.
Remove the fastening device (nut and bolt).
Lift the spare wheel towards you from the
rear.
Take the wheel out of the boot.
If there is no wheel in
the well, the
fastening device (nut and bolt) cannot be
refitted...