Page 126 of 474
124 Controls in detailLightingManual headlamp mode
The low beam headlamps and parking
lamps can be switched on or off with the
exterior lamp switch.Automatic headlamp mode
The following lamps switch on and off au-
tomatically depending on the brightness of
the ambient light:
Low beam headlamps
Tail lamps
Parking lamps
License plate lamps
Side marker lamps
iWith the SmartKey removed from the
starter switch or the engine turned off
with KEYLESS-GO* and the driver’s
door open, a warning sounds if the
parking lamps or the low beam head-
lamps are switched on.
The message $
Turn off lamps
appears in the multifunction display.
iWith the daytime running lamp mode
activated (mandatory in Canada) and
the engine running, the low beam head-
lamps cannot be switched off manual-
ly.
To activate the daytime running lamp
mode, see “Setting daytime running
lamp mode (USA only)” (
page 152).
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 382 of 474
380 Practical hintsReplacing bulbsBulbs
Safe 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 an authorized
Mercedes-Benz Center for headlamp ad-
justment.
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
iBackup lamps will be brought into use
when the following lamps malfunction:
Turn signal lamps
Brake lamps
Parking lamps
Tail lamps
Observe the messages in the multi-
function display (
page 335).
Page 384 of 474
382 Practical hintsReplacing bulbs
Notes on bulb replacement
Only use 12-volt bulbs of the same type
and with the specified watt rating.
Switch the 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 following
lamps replaced by an authorized
Mercedes-Benz Center:
the additional turn signals in the exteri-
or rear view mirrors
the high mounted brake lamp
the brake lamps
the parking lamps and the side marker
lamps in the tail lamp unit
the rear fog lamps
the low beam (Xenon or Bi-Xenon*)
lamps
the front fog lamps
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas. A
bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
iHave the headlamp adjustment
checked regularly.
