Page 325 of 417
324 Practical hintsWhat to do if ...Left display
Right display
Possible cause
Possible solution
.
Turn signal
Rear left
Back-up
lamp on!
The left rear turn signal lamp is
malfunctioning. A backup bulb
has been brought into use.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Turn signal
Rear right
Back-up
lamp on!
The right rear turn signal lamp
is malfunctioning. A backup
bulb has been brought into use.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Turn signal
Front left
The left front turn signal lamp is
malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Turn signal
Front right
The right front turn signal lamp
is malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Left turn signal
Mirror
The left turn signal in the side
mirror is malfunctioning. This
message will only appear if all
light emitting diodes have
stopped working.
Have the LEDs replaced as soon as possible.
Page 326 of 417
325 Practical hints
What to do if ...
Left display
Right display
Possible cause
Possible solution
.
Marker lamp
Front left
The front left side marker lamp
is malfunctioning.
Replace the bulb as soon as possible.
Marker lamp
Front right
The front right side marker
lamp is malfunctioning.
Replace the bulb as soon as possible.
Marker lamp
Rear left
The rear left side marker lamp
is malfunctioning.
Replace the bulb as soon as possible.
Marker lamp
Rear right
The rear right side marker lamp
is malfunctioning.
Replace the bulb as soon as possible.
Right turn signal
Mirror
The right turn signal in the side
mirror is malfunctioning. This
message will only appear if all
light emitting diodes have
stopped working.
Have the LEDs replaced as soon as possible.
Page 347 of 417

346 Practical hintsReplacing 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 an authorized
Mercedes-Benz Center for headlamp ad-
justment.
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.iSubstitute bulbs will be brought into
use when lamps malfunction. Observe
the messages in the multifunction dis-
play (
page 323).
!You must not change the bulbs or LEDs
yourself, as you could damage the vehi-
cle lighting systems.
Have blown bulbs or LEDs replaced by
an authorized Mercedes-Benz Center.iIf one of the following bulbs blows, an-
other bulb will adopt its function:
Rear turn signals
Brake lamps
Side lamps
Tail lamps
Page 348 of 417
347 Practical hints
Replacing bulbs
Front lamps
Rear lamps
Lamp
Type
1
Additional turn signals
LEDs
2
Turn signals
PY, 21 W
3
Side marker lamp
WY 5 W
4
Parking lamps
W5W
5
Low and high beam
lamp
D2S, 35 W
6
High beam flasher
H7, 55 W
7
Front fog lamps
H3, 55 W
Lamp
Type
8
Brake/parking lamp
LEDs
9
Turn signal lamp
LEDs
a
Side marker lamp
P 21 W
b
High mounted brake
lamp
LEDs
c
License plate lamp
C 5 W
d
Rear fog lamp
P 21 W
e
Back up lamp
P 21 W
f
Reflector
-