See also:

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

Height
Pull the control upwards to raise or push it downwards to lower, as many times as required, to obtain the position required. ...

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 ...