Mercedes-Benz GL-Class: Front fog lamps and rear fog lamp
Front fog lamps
Only vehicles with front fog lamps have the "fog lamps" function.
WARNING 
If you suspect that driving conditions will be
foggy, turn the light switch to 
before you
start your journey. Otherwise, your vehicle
may not be visible and you could endanger
yourself and others.
WARNING
In low ambient lighting or foggy conditions,
only switch from position 
to
with
the vehicle at a standstill in a safe location.
Switching from to
will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions may
result in an accident.
► To switch on the front fog lamps: turn the SmartKey in the ignition lock to position 2 or start the engine.
► Turn the light switch to
or
. If the
light switch is set to , you cannot
switch on the fog lamps.
► Pull the light switch out to the first detent.
The green 
indicator lamp on the
light
switch lights up.
► To switch off the front fog lamps: press the light switch in as far as it will go.
The green 
indicator lamp on the
light
switch goes out.
Rear fog lamp
► To switch on (vehicles with front fog lamps): turn the SmartKey in the ignition lock to position 2 or start the engine.
► Turn the light switch to
or
. When
the light switch is set to 
, you
cannot
switch on the rear fog lamp.
► Pull the light switch out to the second stop.
The yellow 
indicator lamp on the
light
switch lights up.
► To switch off the rear fog lamp: press the light switch in as far as it will go.
The yellow 
indicator lamp on the
light
switch goes out.
► To switch on (vehicles without front fog lamps): turn the SmartKey in the ignition lock to position 2 or start the engine.
► Turn the light switch to
. When the
light switch is set to , you cannot
switch on the rear fog lamp.
► Turn the light switch to
. When the
light switch is set to 
, you cannot
switch on the rear fog lamp.
► Pull the light switch out to the stop.
The yellow indicator lamp on the
light
switch lights up.
► Pull the light switch out to the stop.
The yellow indicator lamp in the
instrument cluster lights up.
► To switch off the rear fog lamp: press the light switch in as far as it will go.
The yellow indicator lamp on the
light
switch goes out.
► To switch off the rear fog lamp: press the light switch in as far as it will go.
The yellow indicator lamp in the
instrument cluster goes out.
Automatic headlamp mode
► To switch on automatic headlamp
mode: turn the light switch to .
SmartKey in position 1 in the ignition lock:
the parking lamps are switched on or off
automatically depending on the br ...
Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated five times while the lights are on and
the engine is running. When you
switch off the ignitio ...
See also:
When to Check and Change Automatic Transmission Fluid
It is usually not necessary to check the transmission fluid level. The only reason
for fluid loss is a transmission leak or overheating the transmission. If a small
leak is suspected, then use the f ...
Rear lamp - bulb replacement
Note: The direction indicator lamp, stop lamp, and tail lamp are LED units, and
cannot be serviced.
1. Rear fog lamp.
2. Reversing lamp
3. Twist the relevant bulb unit and pull to access the bu ...
Calling up a stored setting
► Press and hold the relevant storage
position button 1, 2 or 3 until the seat,
steering wheel and exterior mirrors are in
the stored position.
The setting procedure is interrupted as
soon ...
