Mercedes-Benz 2005 M-Class Operator's Manual page 280

Practical hints
Replacing bulbs
High beam halogen bulb (vehicles with
halogen bulbs: high beam and high
beam flasher; vehicles with Xenon*
headlamps: high beam flasher only)
Turn housing cover 1 counterclock-
wise and remove it.
Pull electrical connector 2 off.
Unclip the retainer spring on the bulb
socket and take out the bulb.
Insert the new bulb so that its socket
locates in the recess of the lamp hous-
ing.
Clip on the retainer spring.
Plug electrical connector 2 onto the
bulb.
Align housing cover 1 and turn it
clockwise.
278
Parking/standing lamp bulb
Turn housing cover 1 counterclock-
wise and remove it.
Pull out bulb socket 3 with the bulb.
Press gently onto the bulb and turn
counterclockwise out of bulb
socket 3.
Press the new bulb gently into bulb
socket 3 and turn clockwise until it
engages.
Press bulb socket 3 back into the
lamp.
Align housing cover 1 and turn it
clockwise.
Turn signal bulb/side marker bulb
1 Bulb socket
Twist bulb socket 1 counterclockwise
and pull out.
Push bulb into socket, turn counter-
clockwise and remove.
Insert new bulb in socket, push in and
twist clockwise.
Reinstall the bulb socket 1.