Mercedes Benz 2009 M-Class User Manual

Page of 585
139
Controls in detail
Lighting
Locator lighting and night security 
illumination
The locator lighting and the night security 
illumination are described in the “Control 
system” section, see “Setting locator light-
ing” (
page 172) and “Setting night secu-
rity illumination” (
page 172).
Fog lamps
Front fog lamps
Switch on the low beam 
headlamps
B (
page 136).
Pull out the exterior lamp switch to first 
stop.
The front fog lamps switch on.
The green indicator lamp
‡ in the 
exterior lamp switch comes on 
(
page 136).
Push in the exterior lamp switch.
The front fog lamps switch off.
The green indicator lamp
‡ in the 
exterior lamp switch goes out.
Rear fog lamp (driver’s side only)
Switch on the low beam 
headlamps
B (
page 136).
Pull out the exterior lamp switch to 
second stop.
The rear fog lamp switches on.
The yellow indicator lamp
† in the 
exterior lamp switch comes on 
(
page 136).
Push in the exterior lamp switch to first 
stop.
The rear fog lamp switches off.
The yellow indicator lamp
† in the 
exterior lamp switch goes out.
The front fog lamps remain lit.
Warning!
G
In low ambient lighting or foggy conditions, 
only switch from position
U to B with 
the vehicle at a standstill in a safe location. 
Switching from
U to B will briefly 
switch off the headlamps. Doing so while 
driving in low ambient lighting conditions 
may result in an accident.
i
Fog lamps will operate with the parking 
lamps and/or the low beam headlamps on. Fog 
lamps should only be used in conjunction with 
low beam headlamps. Consult your State or 
Province Motor Vehicle Regulations regarding 
permissible lamp operation.
i
Fog lamps cannot be switched on with the 
exterior lamp switch in position
U.
To switch on the fog lamps, turn the exterior 
lamp switch to position
B first.