Page 341 of 474

340 OperationMaintenance
Resetting the maintenance service indicator
In the event that the maintenance service
on your vehicle is not carried out by an
authorized Mercedes-Benz Center, you can
have the maintenance service indicator
reset. The automotive maintenance facility
carrying out the maintenance service will
find the information for resetting the
maintenance service indicator in the
maintenance-relevant information for your
vehicle. Such information is available from
either your authorized Mercedes-Benz
Center or directly from Mercedes-Benz.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the maintenance
service indicator. To arrive at the true
maintenance service deadline, you will
need to subtract these days from the
days shown in the maintenance service
indicator message or maintenance ser-
vice indicator display.
Do not confuse the maintenance
service indicator with the engine oil
level indicatorN.
iIf the maintenance service indicator
was inadvertently reset, have an
authorized Mercedes-Benz Center
correct it.
Only reset if the proper maintenance
service has been performed. Resetting
the system without performing the
proper service as called for by the
maintenance service indicator will
result in engine damage and/or other
vehicle damage not covered by the
Mercedes-Benz Limited Warranty.
Page 351 of 474

350 Practical hintsWhat to do if …Lamps in instrument clusterGeneral information:
If any of the following lamps in the instru-
ment cluster fails to come on during thebulb self-check when switching on the
ignition, have the respective bulb checked
and replaced if necessary.Problem
Possible cause/consequence
Suggested solution
-
The yellow ABS indicator lamp
comes on while driving.
The ABS has detected a malfunction and
has switched off. The BAS and the ESP
®
are also switched off (see messages in dis-
play).
The brake system is still functioning nor-
mally but without the ABS available.
If the ABS control unit is malfunctioning,
other systems such as the navigation
system* or the automatic transmission*
may also be malfunctioning.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Read and observe messages in the dis-
play (
page 358).
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.
The charging voltage has fallen below ten
volts. The ABS has switched off.
The battery might not be charged suffi-
ciently.
Switch off electrical consumers that are
currently not needed, e.g. seat heating*.
If necessary, have the generator
(alternator) and battery checked.
When the voltage is above this value again,
the ABS is operational again.
Page 357 of 474
356 Practical hintsWhat to do if …Lamp in center consoleProblem
Possible cause/conse-
quence
Suggested solution
56
The front passenger front air bag
off indicator lamp illuminates and
remains illuminated with the
weight of a typical adult or some-
one larger than a small individual
on the front passenger seat.
The system is malfunctioning.
Have the system checked as soon as possible
by an authorized Mercedes-Benz dealer.
Also note any messages in the multifunction
display and follow corrective steps
(page 358).
Warning!
G
If the 56indicator lamp illuminates
and remains illuminated with the weight of a
typical adult or someone larger than a small
individual on the front passenger seat, do
not have any passenger use the front
passenger seat until the system has been
repaired.
Page 358 of 474

357 Practical hints
What to do if …
Problem
Possible cause/conse-
quence
Suggested solution
56
The front passenger front
air bag off indicator lamp
does not illuminate
and/or does not remain
illuminated with the
weight of a typical
12-month-old child in a
standard child restraint or
less on the front passen-
ger seat.
The system is malfunctioning.
Make sure there is nothing between seat cushion and
child seat and check installation of the child seat.
Make sure that no objects applying supplemental
weight onto the seat are present.
If the front passenger front air bag off indicator lamp
remains out, have the system checked as soon as pos-
sible by an authorized Mercedes-Benz dealer. Do not
transport a child on the front passenger seat until the
system has been repaired.
Also note any messages in the multifunction display
and follow corrective steps (
page 364).
Warning!
G
If the 56indicator lamp does not
illuminate or remains out with the weight of
a typical 12-month-old child in a standard
child restraint or less on the front passenger
seat, do not transport a child on the front
passenger seat until the system has been
repaired.
Page 359 of 474

358 Practical hintsWhat to do if …Vehicle status messages in the multifunction display
Warning and malfunction messages
appear in the multifunction display located
in the instrument cluster.
Certain warning and malfunction messag-
es are accompanied by an audible signal.
Address these messages accordingly and
follow the additional instructions given in
this Operator’s Manual.
Selecting the vehicle status message
memory menu in the control system
(page 138) displays both cleared and
uncleared messages.
High-priority messages appear in the
multifunction display in red color.Certain messages of high priority cannot
be cleared from the multifunction display
using the reset button (
page 127) or
buttonj, k, ÿ, orè on the
steering wheel.
Other messages of high priority and
messages of less immediate priority can
be cleared from the multifunction display
using the reset button (page 127) or
buttonj, k, ÿ, orè on the
steering wheel. They are then stored in the
vehicle status message memory
(
page 138). Remember that clearing a
message will only make the message
disappear. Clearing a message will not
correct the condition that caused the
message to appear.
Warning!
G
All categories of messages contain
important information which should be
taken note of and, where a malfunction is
indicated, addressed as soon as possible at
an authorized Mercedes-Benz Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property
damage or personal injury.Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
Contact your nearest authorized
Mercedes-Benz Center.
Page 360 of 474
359 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the multifunction display.
For your convenience the messages are
divided into two sections:
Text messages (
page 360)
Symbol messages (
page 369)
iSwitching on the ignition causes all
instrument cluster lamps (except low
beam headlamp indicator lamp, high
beam headlamp indicator lamp, and
turn signal indicator lamps unless
activated) as well as the multifunction
display to come on. Make sure the
lamps and multifunction display are in
working order before starting your
journey.
Page 361 of 474
360 Practical hintsWhat to do if …Text messagesDisplay message
Possible cause/consequence
Possible solution
ABS
malfunction
Visit workshop
The ABS has detected a malfunction and
has switched off. The ESP
®, BAS and the
Run Flat Indicator* are also deactivated.
The brake system is still functioning
normally but without the systems specified
above.
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.
Display malfunction
Visit workshop
The ABS or the ABS display is
malfunctioning.
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 362 of 474

361 Practical hints
What to do if …
Display message
Possible cause/consequence
Possible solution
ESP
unavailable
See Operator’s Manual
The ESP
® was deactivated because of a
malfunction or interrupted power supply. The
BAS and the Run Flat Indicator* are also deac-
tivated.
The ABS might not be operational.
The brake system is still functioning normally
but without the systems specified above.
Continue driving with added caution.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions
increases the risk of an accident.
If the yellow ESP
® warning lampv flashes
while driving and this message appears, the
electronic traction system has switched off to
prevent overheating of the drive wheel brakes.
As soon as the brakes have cooled off, the
electronic traction system switches on
again.
The self-diagnosis has not been completed
yet.
The ESP
®, BAS and the Run Flat Indicator* are
temporarily deactivated.
The brake system is still functioning normally
but without the systems specified above.
The display will clear after driving a short
distance at more than 12 mph (20 km/h).