See also:

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. ...

Diesel weights and towed loads (in kg) - commercial vehicles
The GTW and towed load values indicated are valid up to a maximum altitude of 1 000 metres; the towed load mentioned must be reduced by 10 % for each additional 1 000 metres of altitude. High a ...

Changing a fuse
Before changing a fuse: the cause of the failure must be identified and rectified, all electrical consumers must be switched off, the vehicle must be immobilised with the ignition off, ident ...