Anti-theft protection
Electronic engine immobiliser
The key contains an electronic chip which has a special code. When the ignition is switched on, this code must be recognised in order for starting to be possible.
This electronic engine immobiliser locks the engine management system a few minutes after the ignition is switched off and prevents starting of the engine by anyone who does not have the key.

In the event of a malfunction, you are informed by lighting of this warning lamp, an audible signal and a message on the multifunction screen.
In this case, your vehicle does not start; contact a CITROËN dealer as soon as possible.
See also:
Advice on child seats
The incorrect installation of a child
seat in a vehicle compromises the
child's protection in the event of an
accident.
Remember to fasten the seat belts or
the child seat harnesses keeping the
...
Overview
Recognised as one of the best-styled models in its segment, the Citroen C5
has been subtly upgraded. The changes enable the car to keep all its character
while making it immediately visible and re ...
Lighting rheostat
System for manual adjustment of the
brightness of the instruments and controls
in relation to the exterior brightness.
Activation
When the lighting is on:
press the button to change the
br ...






