78 Lighting system equipment. Observe the relevant legal requirements for each country. Light/dark boundary (B) at 5 m = approx. 1.67 m 1/3 of the installation height, measured at 5 m, yields the light/dark boundary (B) with dipped-beam headlamps. Adjusting the auxiliary headlamps X Tighten nut ; on auxiliary headlamp : . Switching the auxiliary headlamps on/off Driver's workstation X Check the setting of the auxiliary headlamp before the start of a journey ( Y page 78). X To switch on: make sure that the key is in position 2 in the ignition lock.
A Distance = 15 m B Light/dark boundary H Height of the auxiliary headlamp centre N% Angle of the light/dark boundary X Switch on the dipped-beam headlamps ( Y page 74). X Press switch : . The й indicator lamp in the status area of the on-board computer lights up. The side lamps, dipped-beam headlamps and main-beam headlamps are only available on the auxiliary headlamps. The daytime driving lights are switched off, but the dipped-beam headlamps in the auxiliary headlamps are switched on automatically instead. X Slightly loosen nut ; on auxiliary head- lamp : . X Switch on the auxiliary headlamps : ( Y page 78). X Adjust auxiliary headlamp : .
The light/dark boundary (B) at a distance (A) of 15 m in front of the auxiliary head- lamps may only be half as high as the instal- lation height (H) of the auxiliary headlamps. The installation height (H) is measured from the ground to the centre of the auxiliary headlamps (H). Example of adjustment height: Light/dark boundary (B) at 15 m = 1.00 m X To switch off: press switch ; . The й indicator lamp in the status area of the on-board computer goes out.