See also:

Emergency control
System which locks or unlocks the doors mechanically in the event of a malfunction of the battery or of the central locking. Locking the driver's door Insert the key in the lock, then turn it to ...

Reactivation
These systems are reactivated automatically each time the ignition is switched back on or from 30 mph (50 km/h). Press the "ESP OFF" button again to reactivate them manually. ...

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 ...