Page 113 of 473

112 Controls in detail
Lighting
When the engine is running, and you turn
the exterior lamp switch to
positionCorB, the manual head-
lamp mode has priority over the daytime
running lamp mode.
The corresponding exterior lamps switch
on (
page 109).
Locator lighting and night security illu-
mination
The locator lighting and the night security
illumination are described in the “Control
system” section, see “Setting locator light-
ing” (
page 144) and “Setting night secu-
rity illumination” (
page 144).Fog lampsFront fog lamps
Switch on the low beam
headlampsB (
page 109).
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 109).
Push in the exterior lamp switch.
The front fog lamps switch off.
The green indicator lamp‡ in the
exterior lamp switch goes out.
iWith the daytime running lamp mode activat-
ed and the exterior lamp switch in positionM,
you cannot switch on the high beam headlamps.
The high beam flasher is available at all times.
For nighttime driving, turn the exterior lamp
switch in positionB orU to permit
activation of the high beam headlamps.
Warning!G
In low ambient lighting or foggy conditions,
only switch from positionUtoB with
the vehicle at a standstill in a safe location.
Switching fromUtoB will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions
may result in an accident.
iFog lamps will operate with the parking
lamps and/or 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
allowable lamp operation.
iFog lamps cannot be switched on with the
exterior lamp switch in positionU. To switch
on the fog lamps, turn the exterior lamp switch to
positionB first.
Page 114 of 473

113 Controls in detail
Lighting
Rear fog lamp (driver’s side only)
Switch on the low beam
headlampsB (
page 112).
Pull out the exterior lamp switch to
second stop.
The front fog lamps and the rear fog
lamp switch on.
The yellow indicator lamp† in the
exterior lamp switch comes on
(
page 109).
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.
Combination switch
1High beam
2High beam flasherHigh beam
Turn the exterior lamp switch to
positionB (
page 109).
Push the combination switch in
direction of arrow1 to switch on the
high beam.
The high beam headlamp indicator
lampA in the instrument cluster
comes on (
page 26).
Pull the combination switch in direction
of arrow2 to its original position to
switch off the high beam.
The high beam headlamp indicator
lampA in the instrument cluster
goes out.
High beam flasher
Pull the combination switch briefly in
direction of arrow2.
Page 358 of 473
357 Practical hints
What to do if …
On the pages that follow, you will find
a compilation of the most important warn-
ing and malfunction messages that may
appear in the multifunction display.
For your convenience the messages are
divided into two sections:
Text messages (page 358)
Symbol messages (page 366)
Warning!G
No messages will be displayed if either the
instrument cluster or the multifunction dis-
play is inoperative.
Contact your nearest authorized
Mercedes-Benz Center.
iSwitching on ignition (page 37) causes all
instrument cluster lamps (except high beam
headlamp indicator lamp and turn signal indica-
tor lamps unless activated) as well as the multi-
function display to come on. Make sure the
lamps and multifunction display are in working
order before starting your journey.
Page 377 of 473

376 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
.Brake-/tail lamp
leftThe left brake lamp is malfunction-
ing. This message will only appear if
a critical number of LEDs have
stopped working.Contact an authorized Mercedes-Benz
Center as soon as possible.
Brake-/tail lamp
rightThe right brake lamp is malfunction-
ing. This message will only appear if
a critical number of LEDs have
stopped working.Contact an authorized Mercedes-Benz
Center as soon as possible.
Front foglamp
leftThe left front fog lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Front foglamp
rightThe right front foglamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Rear foglamp
Auxiliary bulb onThe rear fog lamp on the driver’s
side is malfunctioning. A backup
bulb has been brought into use.Replace the bulb as soon as
possible (
page 393).
High beam
leftThe left high beam lamp (halogen
headlamps)/high beam flasher
lamp (Bi-Xenon* headlamps) is
malfunctioning.Replace the bulb as soon as
possible (
page 393).
Page 378 of 473
377 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
.High beam
rightThe right high beam lamp (halogen
headlamps)/high beam flasher
lamp (Bi-Xenon* headlamps) is
malfunctioning.Replace the bulb as soon as
possible (
page 393).
License plate lamp
leftThe left license plate lamp is
malfunctioning.Replace the bulb as soon as
possible (
page 393).
License plate lamp
rightThe right license plate lamp is
malfunctioning.Replace the bulb as soon as
possible (
page 393).
Reverse lamp
leftThe left backup lamp is malfunc-
tioning.Replace the bulb as soon as
possible (
page 393).
Reverse lamp
rightThe right backup lamp is malfunc-
tioning.Replace the bulb as soon as
possible (
page 393).
Low beam
leftThe left low beam lamp is malfunc-
tioning.Halogen headlamp:
Replace the bulb as soon as
possible (
page 393).
Bi-Xenon* headlamp:
Contact an authorized Mercedes-Benz
Center as soon as possible.
Page 395 of 473
394 Practical hints
Replacing bulbs
Front lamps
LampType
1Additional turn signal
lampLED
2Turn signal lamp3457 AK
3Halogen headlamp:
Low beam
H7 (55 W)
Bi-Xenon* headlamp:
Low and high beam1
1Vehicles with Bi-Xenon* headlamps: Low beam
and high beam use the same D2S-35W lamp. Do
not replace the Bi-Xenon* bulbs yourself. Contact
an authorized Mercedes-Benz Center.
D2S-35 W
4Front fog lampHB4 (51 W)
Front fog lamp
(vehicles with Sport
Package* and
SLK 55 AMG)H7 (55 W)
Corner illuminating
front fog lamp*H7 (55 W)
LampType
5Parking and standing
lampW5W
6Halogen headlamp:
High beam/high beam
flasher
H7 (55 W)
Bi-Xenon* headlamp:
High beam flasher
H7 (55 W)
7Side marker lampW5W
Page 397 of 473
396 Practical hints
Replacing bulbs
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
positionM (
page 109).
Open the hood (page 294).
1Housing cover for low beam (halogen
headlamps only)
Housing cover for Bi-Xenon* head-
lamps. Do not remove.
2Bulb socket for turn signal lamp
3Bulb socket for high beam/high beam
flasher lamp
4Bulb socket for parking and standing
light lamp
5Bulb socket for low beam bulb
(Halogen headlamps only)
Warning!G
Do not remove the cover1 for the
Bi-Xenon* headlamp. Because of high volt-
age in Bi-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.
Page 398 of 473

397 Practical hints
Replacing bulbs
Low beam bulb (Halogen headlamps
only)
Turn housing cover1 counterclock-
wise and remove.
Turn bulb socket5 with the bulb
counterclockwise and remove.
Pull the bulb out of bulb socket5.
Press the new bulb into bulb socket5.
Place bulb socket5 back into the
lamp and turn it clockwise.
Reinstall housing cover1.
High beam/high beam flasher bulb
(Halogen headlamps) / High beam
flasher bulb (Bi-Xenon* headlamps)
Turn bulb socket3 with the bulb
counterclockwise and remove.
Pull the bulb out of bulb socket3.
Press the new bulb into bulb socket3.
Place bulb socket3 back into the
lamp and turn it clockwise.Front turn signal bulb
Turn bulb socket2 with the bulb
counterclockwise and remove.
Press gently onto the bulb and turn it
counterclockwise out of bulb
socket2.
Press the new bulb gently into bulb
socket2 and turn it clockwise.
Place bulb socket2 back into the
lamp and turn it clockwise.
Parking and standing lamp bulb
Turn bulb socket4 with the bulb
counterclockwise and remove.
Pull the bulb out of bulb socket4.
Press the new bulb into bulb socket4.
Place bulb socket4 back into the
lamp and turn it clockwise.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 109).
Open the trunk lid (page 100).
Tail lamp unit
1Bulb socket for rear fog lamp
(driver’s side only)
2Bulb socket for turn signal lamp
3Bulb socket for backup lamp