Horn
Audible warning to alert other road users to an imminent danger.

Press one of the spokes of the steering wheel.
Use the horn moderately and only in the following cases:
- immediate danger,
- when approaching an area
- where there is no visibility.
See also:
Locking rear doors
Manual operation
Rear doors are locked by operating the lever on the rear face of the door in
question. When the manual safety is in use, the aperture is horizontal.
Electric operation
The el ...
Efficient engineering
Citroën has utilised the latest industrial technologies, along with a 'part
by part' focus on reducing the weight and number of components in new C4. For
example, the laser welding on the roo ...
Load reduction mode
System which manages the use of certain
functions according to the level of
charge remaining in the battery.
When the vehicle is being driven, the load
reduction function temporarily deactivates
...






