Mercedes-Benz GL-Class 2012 Owners Manual - Manual (Page 130)

Adjusting the headlamps
: V vertical axis
; H (horizontal) height, measured from the
center
Setting the headlamps correctly is extremely
important. Setting the high-beam headlamps
also sets the low-beam headlamps. (The term
headlamps covers both high and low beam.)
To check and adapt the headlamp setting,
proceed as follows:
X Park the vehicle on level ground at a
distance of 25 feet (7.6 m) from a wall or
similar.
X Make sure that the vehicle load is in the
normal range.
X Switch on the low-beam headlamps L.
If the light of the headlamps is not distributed
as shown in the illustration above, follow the
instructions below:
X Open the hood ( Y page 300).
The adjustment screws are located under the
cover.
X Insert a suitable tool into the openings in
the cover. The directions of arrow =
and ? indicate the angle at which the tool
needs to be inserted in order to reach the
adjustment screws.
X Turn both screws uniformly until the
vertical setting of the headlamp
corresponds to :. Turn the screws
clockwise to adjust the headlamp upwards
and counter-clockwise to adjust it
downwards.
Gradation:
R Screw at arrow =: 0.67˚ angle of
inclination
R
Screw at arrow?: 0.50˚ angle of
inclination
The left and right headlamps need to be
adjusted individually.
i If it is not possible to adjust the
headlamps accurately, have the
adjustment performed at an authorized
Mercedes-Benz Center.
Windshield wipers
Switching the windshield wipers on/
off
G WARNING
Wiper blades are components that are subject
to wear and tear. Replace the wiper blades
twice a year, preferably in the spring and fall.
Otherwise the windows will not be wiped
properly. As a result, you may not be able to
observe surrounding traffic conditions and
could cause an accident.
! Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield can
scratch the glass if wiping takes place when
the windshield is dry.
! If the windshield wipers leave smears on
the windshield after the vehicle has been
128
Windshield wipers
Lights and windshield wipers