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:
Very cold protection
Moveable device which prevents the intake of snow particles, which could obstruct
the air filter.
DIESEL ENGINE HDi 173 FAP
Normal situation
The shutter 2 is in a horizontal position in the air ...
Rear seats
Rear head restraints
The rear head restraints have two positions:
A stowed position for when the seat is not occupied.
A deployed position for safety of passengers, locking into place including f ...
Comfort & convenient technology
The new Citroën C4 is designed for business-class travel with intuitive,
intelligent technology enabling owners to tailor the new C4's environment and
ambience to their own preferences. For e ...






