Page 344 of 705
343 Controls in detail
Lighting
Low beam headlamps
The exterior lamp switch is located on the
dashboard to the left of the steering wheel.
Turn the switch toB.
The green indicator lampC in the
exterior lamp switch comes on.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 (
page 342).
Automatic headlamp mode
The following lamps switch on and off au-
tomatically depending on the brightness of
the ambient light:
Low beam headlamps
Tail and parking lamps
License plate lamps
Side marker lamps
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With 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 low beam
headlamps are switched on.
The message: “Please switch off lights” appears
in the multifunction display.
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With the daytime running lamp mode activat-
ed and the engine running, the low beam head-
lamps cannot be switched off manually.
For information on how to activate the daytime
running lamp mode, see “Daytime running lamp
mode” (
page 344).
Warning!
G
If the exterior lamp switch is set to*,
the headlamps may switch off unexpect-
edly when the system senses bright am-
bient light, for example light from
oncoming traffic.
If the exterior lamp switch is set to*,
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 * to B with the
vehicle at a standstill in a safe location.
Switching from * to B will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions
may result in an accident.
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 599 of 705
598 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Please
switch off lights
You are getting out of the vehicle and the
lights are still switched on.
Turn the exterior lamp switch to M
(page 342).
Switch off lights
or
remove key
The light switch is set to * and you have
forgotten to take out the SmartKey. The
parking lamps remain switched on.
Turn the exterior lamp switch to M
(page 342).
Remove the SmartKey from the starter
switch.
Front foglamp,
Left
The left front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Front foglamp,
Right
The right front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Left
The left rear fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Left
Substitute bulb on
The left rear fog lamp is malfunctioning. A
substitute bulb is being used.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Right
The right rear fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Right
Substitute bulb on
The right rear fog lamp is malfunctioning. A
substitute bulb is being used.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Page 622 of 705
621 Practical hints
Replacing bulbs
Replacing bulbs
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.
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If the headlamps or front fog lamps are
fogged up on the inside as a result of high humid-
ity, driving the vehicle a distance with the lights
on should clear up the fogging.
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Substitute bulbs will be brought into use
when the following lamps malfunction:
Brake lamps
Rear fog lamps
Front parking lamps
Tail lamps
Turn signal lamps
Observe the messages in the multifunction dis-
play (page 557).
Page 624 of 705
623 Practical hints
Replacing bulbs
Notes on bulb replacement
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 following
lamps replaced by an authorized
Mercedes-Benz Center.
the Bi-Xenon lamps
the front turn signal lamps
the front fog lamps
the additional turn signal lamps in the
exterior rear view mirrors
the parking and standing lamps
the front side marker lamps
the high mounted brake lamps
the brake, tail and rear standing lamps
the rear side marker lamps
the rear fog lamp
the rear turn signal lamps
the rear side marker lamps
the license plate lamps
Replacing bulbs for front lamps
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to M
(page 342).
Open the hood (
page 492) (except
for side marker lamps).
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
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.
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Have the headlamp adjustment checked
regularly.
