Page 120 of 464

120 Controls in detailLighting
Manual headlamp mode
The low beam headlamps and parking 
lamps can be switched on and off with the 
exterior lamp switch. For exterior lamp 
switch, see “Exterior lamp switch” 
(page 119).
Automatic headlamp mode
The parking lamps, low beam headlamps 
and license plate lamps switch on and off 
automatically depending on the brightness 
of the ambient light.
Turn the exterior lamp switch toU.
iIf you remove the SmartKey and open 
the driver’s door while the parking 
lamps or low beam headlamps are 
switched on,
a warning sounds
$ appears in the multifunction 
display 
the message 
Turn off lamps!
 ap-
pears in the multifunction display
iWith the daytime running lamp mode 
activated and the engine running, the 
low beam headlamps cannot be 
switched off manually.
Warning!
G
If the exterior lamp switch is set toU,
the headlamps may switch off unexpect-
edly when the system senses bright am-
bient light, for example light from 
oncoming traffic. 
the headlamps will not be automatically 
switched on under foggy conditions. 
To minimize risk to you and to others, acti-
vate headlamps by turning exterior lamp 
switch to B when driving or when traffic 
and / or ambient lighting conditions require 
you to do so.
In low ambient lighting conditions, only 
switch from position U to B with the 
vehicle at a standstill. Switching from U 
to B will briefly switch off the head-
lamps. Doing so while driving in low ambient 
lighting conditions may result in an acci-
dent.
The automatic headlamp feature is only an 
aid to the driver. The driver is responsible for 
the operation of the vehicle's lights at all 
times. 
     
        
        Page 121 of 464

121 Controls in detail
Lighting
Daytime running lamp mode
Turn exterior lamp switch to 
positionM orU.
When the engine is running, the low beam 
headlamps are automatically switched on. 
In low ambient light conditions the parking 
lamps will also switch on.
Canada only
When you shift from a driving position to 
positionN orP, the low beam switches off 
(with a three-minute delay).
For nighttime driving you should turn the 
exterior lamp switch to positionB to 
permit activation of the high beam head-
lamps.USA only
The high beam headlamps can also be ac-
tivated when driving with the daytime run-
ning lamp mode activated and exterior 
lamp switch in positionM.
To activate the daytime running lamp 
mode, see “Setting daytime running lamp 
mode (USA only)” (
page 145).
Locator lighting and night security illu-
mination
Locator lighting and night security illumi-
nation are described in the control system 
section, see “Setting locator lighting” 
(
page 146) and see “Setting night secu-
rity illumination (Exterior lamps delayed 
shut-off)” (
page 147).
iWith the daytime running lamp mode 
activated, the low beam headlamps will 
not be switched off automatically.iThe front fog lamps and rear fog lamp 
cannot be switched on manually with 
exterior lamp switch in positionU. 
To activate the fog lamps, turn exterior 
lamp switch to positionB and pull 
the exterior lamp switch to first or sec-
ond stop (
page 122).
iSee notes on the exterior lamp switch 
(page 119). 
     
        
        Page 122 of 464

122 Controls in detailLightingSwitching on fog lamps
Switching on front fog lamps
Make sure the low beam headlamps 
are switched on.
Pull out exterior lamp switch to first 
stop.
The green indicator lamp‡ beside 
the lamp switch comes on.Switching on rear fog lamp
Make sure the low beam headlamps 
are switched on.
Pull out exterior lamp switch to second 
stop.
The yellow indicator lamp† beside 
the lamp switch comes on.
Warning!
G
In low ambient lighting or foggy conditions, 
only switch from position U to B with 
the vehicle at a standstill. Switching from 
U to B will briefly switch off the head-
lamps. Doing so while driving in low ambient 
lighting conditions may result in an acci-
dent.iFog 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 permis-
sible lamp operation.
iThe front fog lamps and rear fog lamp 
cannot be switched on manually with 
exterior lamp switch in positionU. 
To activate the fog lamps, turn exterior 
lamp switch to positionB and pull 
the exterior lamp switch to first or sec-
ond stop (
page 122). 
     
        
        Page 146 of 464

146 Controls in detailControl system
With daytime running lamp mode se-
lected and the exterior lamp switch at 
position0, the following lamps will 
come on automatically when the en-
gine is turned on:
Parking lamps and low beam head-
lamps
License plate lamps (in low ambient 
light conditions) Setting locator lighting
During darkness, the following lamps will 
come on when the exterior lamp switch is 
in position U, the locator lighting fea-
ture is activated, and the vehicle is un-
locked by remote control:
Parking lamps
Tail lamps
License plate lamps
Front fog lamps
To activate locator lighting:
Make sure the function surround light-
ing is set to 
on, see (
page 146).
Turn the exterior lamp switch to posi-
tion U.
The locator lighting switches off when the 
driver’s door is opened. It switches off au-
tomatically after a period of approximately 
40 seconds.
Move the selection marker with 
theæ orç button to the 
Light-
ning 
submenu.
Press buttonj ork repeatedly 
until you see this message in the dis-
play: 
Function Surround lighting
.
The selection marker is on the current 
setting.
Pressæ orç to select the de-
sired setting.
The locator lighting will be switched on 
or off.
iIf you turn the exterior lamp switch to 
another position, the corresponding 
lamp(s) will switch on.
For safety reasons, resetting the Lighting
 submenu to factory settings 
(
page 140) while driving will not re-
set the daytime running lamp mode.
In the display you will then see the mes-
sage: 
Lighting – Cannot be com-
pletely reset to factory settings 
while driving
.
 
     
        
        Page 147 of 464

147 Controls in detail
Control system
Setting night security illumination 
(Exterior lamps delayed shut-off)
Use the 
Headlamps delayed shut-off
 
function to set whether and for how long 
you would like the exterior lamps to illumi-
nate during darkness after all doors are 
closed. When the delayed shut-off feature 
is activated and the exterior lamp switch is 
in position U, the following lamps will 
remain lit after you remove the SmartKey 
from the starter switch:
Parking lamps
Tail lamps
License plate lamps
Front fog lampsTo activate night security illumination:
Select delayed shut-off period, 
see (
page 147).
Turn the exterior lamp switch to posi-
tion U.
To select delayed shut-off period:
Move the selection marker with 
theæ orç button to the 
Light-
ing 
submenu.
Press buttonj ork repeatedly 
until you see this message in the dis-
play: 
Headlamps delayed shut-off
.
The selection marker is on the current 
setting.
Pressæ orç to select the de-
sired lamp-on period.You can select:
0 s
, the delayed shut-off feature is 
deactivated
15 s
, 30 s
, 45 s
 or 
60 s
, the delayed 
shut-off feature is activated
You can temporarily deactivate the de-
layed shut-off feature:
Before leaving the vehicle turn the 
SmartKey in the starter switch to 
position0.
Then turn it to position2 and back 
to0.
The delayed shut-off feature is deacti-
vated. It will reactivate as soon as you 
reinsert the SmartKey in the starter 
switch.
For vehicles with KEYLESS-GO*:
Press the KEYLESS-GO start/stop but-
ton on the gear selector lever 
(page 33).
iYou can reactivate this function within 
ten minutes by opening a door.
If you do not open a door after remov-
ing the SmartKey, the lamps will auto-
matically switch off after 60 seconds. 
     
        
        Page 372 of 464
372 Practical hintsReplacing bulbs
Replacing bulbsSafe vehicle operation depends on proper 
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all 
times.
Correct headlamp adjustment is extremely 
important. Have headlamps checked and 
readjusted at regular intervals and when a 
bulb has been replaced. See your autho-
rized Mercedes-Benz Center for headlamp 
adjustment.
Bulbs
iIf the headlamps are fogged up on the 
inside as a result of high humidity, driv-
ing the vehicle a distance should clear 
up the fogging.
iBackup bulbs will be brought into use 
when the following lamps malfunction:
Turn signal lamps
Brake lamps
Parking lamps
Tail lamps 
     
        
        Page 374 of 464
374 Practical hintsReplacing bulbs
Only use 12 volt bulbs of the same type 
and with the specified watt rating. 
Switch lights off before changing a bulb 
to prevent short circuits. 
Always use a clean lint-free cloth when 
handling bulbs. 
Your hands should be dry and free of oil 
and grease.
If the newly installed bulb does not 
come on, visit an authorized 
Mercedes-Benz Center.
Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized 
Mercedes-Benz Center.
Additional turn signal lamps in the 
exterior rear view mirrors
High mounted brake lamp
Bi-Xenon* lamps
Front fog lamps
Replacing bulbs for front lamps 
Front lamps halogen-type
1Housing cover for low beam lamp
2Housing cover for high beam lamp3Bulb socket for turn signal lamp
4Low beam bulb
5High beam bulb
6Parking and standing lamp 
     
        
        Page 378 of 464
378 Practical hintsReplacing bulbsReplacing bulbs for rear lamps
Tail lamp assemblies
1Brake lamp
2Turn signal lamp
3Backup lamp
4Standing and side marker lamp
5Rear fog lamp (driver’s side)/tail
Switch off the lights.
Open trunk.
Swing the trim panel covering the cor-
responding rear lights to the side.
Squeeze tabs together and remove the 
bulb holder with the bulb.
Twist bulb counterclockwise and pull 
out of bulb holder. 
Insert new bulb into the holder and turn 
it clockwise.
Reinstall bulb holder. The tabs must au-
dibly click.
Close trim panel.
Place the housing cover back on so 
that its tabs click in place. License plate lamp
1Screws
Switch off the lights.
Loosen both screws1 and remove 
lamp.
Replace the tubular lamp and reinstall 
lamp.
Retighten the screws.