Mercedes-Benz M-Class 2009 Owners Manual - Manual (Page 364)

Replacing bulbs
362
LED rear lamp: Gently press the new bulb
into its bulb socket.
X Align the bulb socket and turn it clockwise.
X Make sure the bulb socket is attached
properly.
X Close the respective cover in the cargo
compartment.
X Close the tailgate.
License plate lamps
1 Screws
2 Lamp cover
X Loosen screws 1 of lamp cover to be
removed.
X Remove lamp cover 2 .
X Replace the bulb.
X Reinstall lamp cover 2 .
X Retighten screws 1 .
Adjusting headlamp aim
1 V Vertical centerline
2 H Horizontal mounting height, measured
from the center
Correct headlamp adjustment is extremely
important. High beam adjustments
simultaneously aim the low beam. To check
and readjust a headlamp, follow the steps
described:
X Park the vehicle on a level surface 25 feet
(7.6 m) from a vertical test screen or wall.
X Make sure the vehicle has a normal tailgate
load.
X Switch on the low beam headlamps B .
If the beam does not show a beam pattern as
indicated in the figure left, then follow the
steps below:
X Open the hood ( Y page 239).
Practical hints