- Position the vehicle complete with spare wheel, tools, fluids, fuel reserve.

- Check that the tyre inflation pressure is correct.

- Position the vehicle on a flat surface, perpendicular to a screen or opaque surface 10 metres away on which a line corresponding to the height from the ground (A) of the centre of the fog lights has been traced.

1. Switch on the fog lights (1a) and, via the hole (1b) adjust the trimmer (1c) so that the demarcation line between the dark area and the area lit up by the light beam is at height B = (2/3 A - 10) cm.