See also:

Misfuel prevention (diesel)
Mechanical device which prevents filling the tank of a Diesel vehicle with petrol. It avoids the risk of engine damage that can result from filling with the wrong fuel. Located in the filler neck ...

Automatic adjustment of xenon headlamps
In order to avoid causing a nuisance to other road users, this system corrects the height of the xenon headlamp beams automatically and when stationary, in relation to the load in the vehicle. ...

Secondary control
For mechanically locking and unlocking the doors in the event of a fault with the central locking system or a battery failure. ...