Practical  advice

Citroen C4 / Citroen C4 Owner's Manual / Practical  advice

See also:

Replacing bulbs
...

Keys
Electronic immobiliser key The key operates all the vehicle’s locks as well as the ignition. The key can be used to deactivate the front passenger’s airbag. See “Airbags”. Central locking using t ...

Ventilation
System which creates and maintains comfortable conditions in the vehicle's passenger compartment. ...