Page 375 of 509

374 Practical hints
What to do if …?
Lamps in instrument cluster
General information:
If any of the following lamps in the instru-
ment cluster fails to come on during the
bulb self-check when switching on the igni-
tion, have the respective bulb checked and
replaced if necessary.
ProblemPossible cause/consequenceSuggested solution
-The yellow Antilock
Brake System (ABS)
indicator lamp comes on
while the engine is
running.The ABS has detected a malfunction and
has switched off. The BAS, ESP® and EBP
are also switched off (see messages in mul-
tifunction display).
The brake system is still functioning nor-
mally but without the systems specified
above.
If the ABS control unit is malfunctioning,
other systems such as navigation system*
or the automatic transmission* may also be
malfunctioning.
Continue driving with added caution.
Wheels will lock during hard braking, re-
ducing steering capability.
Read and observe messages in the mul-
tifunction display (
page 387).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions
increases the risk of an accident.
Page 376 of 509

375 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
-The yellow Antilock
Brake System (ABS)
indicator lamp comes on
while the engine is
running.The charging voltage has fallen below
10 volts. The ABS has switched off. The
BAS, ESP
® and EBP are also switched off
(see messages in the multifunction display)
The battery may not be charged sufficiently.
Switch off electrical consumers that are
currently not needed, e.g. seat heat-
ing*.
If necessary, have the generator and
battery checked.
When the voltage is above this value again,
the ABS is operational again and the ABS in-
dicator lamp should go out.
-The yellow ABS indicator
lamp comes on while the
engine is running.The ABS is temporarily not available. The
ESP®, BAS and EBP are also unavailable.
The system’s self-diagnosis may not be
completed yet.
The brake system is still functioning nor-
mally but without the systems specified
above.
Drive a short distance with added
caution at a vehicle speed of above
12 mph (20 km/h).
When the ABS indicator lamp goes out,
the ABS, ESP
®, BAS and EBP are avail-
able again.
If the ABS indicator lamp does not go out:
Continue driving with added caution.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions increas-
es the risk of an accident.
Page 377 of 509

376 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
-
vThe yellow ABS malfunc-
tion indicator lamp and
the yellow ESP
® warning
lamp come on while the
engine is running and an
acoustic warning sounds.
ABS and ESP® are switched off due to a
malfunction.
The BAS and EBP are also switched off.
The brake system is still functioning nor-
mally but without the ABS available.Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Read and observe messages in the mul-
tifunction display (
page 387).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions increas-
es the risk of an accident.
;
(USA only)
3
(Canada only)
-
v
The red brake warning
lamp comes on while the
engine is running. In addi-
tion, the yellow ABS mal-
function indicator lamp,
and the yellow ESP
®
warning lamp come on
and an acoustic warning
sounds.
A malfunction in the Electronic Brake Pro-
portioning (EBP) was detected. The ABS,
BAS and ESP
® are also switched off (see
messages in multifunction display).
The brake system continues to function
normally, but without electronic support.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Read and observe messages in the mul-
tifunction display (
page 387).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions increas-
es the risk of an accident.
Page 390 of 509

389 Practical hints
What to do if …?
Text messages
Display Possible cause/consequencePossible solution
ABS and ESP
Currently Unavailable
See Operator’s ManualABS and ESP® are not available due to a malfunction.
BAS and the hill start assist are also switched off. It
is possible that the self-diagnostics have not yet
been completed.
The brake system still functions normally.Drive a short distance with gentle turns above a
speed of 12 mph (20 km/h).
The message disappears when ABS and ESP
®
are again available.
The ABS and ESP® were deactivated because of in-
sufficient power supply. The charging voltage has
fallen below 10 volts. BAS and the hill start assist are
also deactivated.
The brake system still functions normally but without
the ABS and ESP
® available.
When the voltage is above this value again, the ABS
and ESP® are operational again and the message in
the multifunction display should disappear.
If the message in the multifunction display does not
disappear:
Have the generator (alternator) and the battery
checked.
ABS and ESP
Inoperative
See Operator’s ManualABS and ESP® are switched off due to a malfunction.
BAS and the hill start assist are also switched off.
The brake system still functions normally but without
the ABS and ESP
® available.
Continue driving with added caution. Wheels
may lock during hard braking, reducing steering
capability.
Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
Failure to follow these instructions increases the
risk of an accident.
Page 398 of 509

397 Practical hints
What to do if …?
Symbol messages
Display Possible cause/consequencePossible solution
-ABS and ESP
Currently Unavailable
See Operator’s ManualABS and ESP® are not available due to a
malfunction. BAS and the hill start assist
are also switched off. It is possible that the
self-diagnostics have not yet been complet-
ed.
The brake system still functions normally.Drive a short distance with gentle turns
above a speed of 12 mph (20 km/h).
The message disappears when ABS and
ESP
® are again available.
The ABS and ESP® were deactivated be-
cause of insufficient power supply. The
charging voltage has fallen below 10 volts.
BAS and the hill start assist are also deacti-
vated.
The brake system still functions normally
but without the ABS and ESP
® available.
When the voltage is above this value again,
the ABS and ESP® are operational again and
the message in the multifunction display
should disappear.
If the message in the multifunction display
does not disappear:
Have the generator (alternator) and the
battery checked.
Page 399 of 509
398 Practical hints
What to do if …?
-ABS and ESP
Inoperative
See Operator’s ManualABS and ESP® are switched off due to a
malfunction. BAS and the hill start assist
are also switched off.
The brake system is still functioning nor-
mally but without the ABS available.Continue driving with added caution.
Wheels may lock during hard braking, re-
ducing steering capability.
Have the system checked at an authorized
Mercedes-Benz Center as soon as possi-
ble.
Failure to follow these instructions increases
the risk of an accident.
Display Possible cause/consequencePossible solution
Page 402 of 509
401 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
;ReleaseYou are driving with the parking brake set.Release the parking brake (page 130).
(USA only)Parking Brake
!
(Canada only)
;
(USA only)
3
EBR, ABS, and ESP
Inoperative
See Operator’s Manu-
alEBP, ABS and ESP® are switched off due to
a malfunction. BAS and the hill start assist
are also switched off.
The brake system still functions normally
but without the ABS and ESP
® available.
Continue driving with added caution.
Wheels may lock during hard braking, re-
ducing steering capability.
Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
Failure to follow these instructions increases
the risk of an accident.
(Canada only)
Page 438 of 509

437 Practical hints
Replacing bulbs
Tail lamp unit
Open trunk lid.
For driver side: Lift up the bottom and
pull out the trim panel covering the
driver side rear light.
For passenger side: Open the fuse box
in the trunk (
page 458).
1Tabs
2Connector
Disconnect electrical connector2.
Pull tabs1 in direction of arrows.
Remove the bulb carrier.1Side marker lamp
2Rear fog lamp (driver’s side)/Side
marker lamp
3Backup lamp
4Brake lamp/tail lamp
5Parking and standing lamp, brake
lamp/tail lamp
6Turn signal lamp
Press gently onto the respective bulb
and turn counterclockwise out of its
bulb socket.
Side marker lamp1: Turn the bulb
socket on backside of tail lamp unit
counterclockwise and removes side
marker lamp1 with bulb socket
Press the new bulb gently into its bulb
socket and turn clockwise until it
engages.
Side marker lamp1: Turn the new
bulb with socket on backside of tail
lamp unit clockwise until it engages.
Reinstall the bulb carrier.
Let tabs1 (
page 437) engage.
Connect the electrical connector2
(
page 437) until it engage.
Reinstall trim panel.
License plate lamp
Since replacing the license plate lamp
bulbs is a technically highly demanding
process, we recommend you have the li-
cense plate lamp bulbs replaced at an au-
thorized Mercedes-Benz Center.