Page 335 of 473

334 Practical hintsWhat to do if …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 display).
The electro-hydraulic brake system is still
functioning normally but without ABS avail-
able.
If the ABS control unit is malfunctioning, oth-
er systems such as Parktronic*, Distronic*,
or the automatic transmission may also be
malfunctioning.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.
Read and observe messages in the
display (
page 347).
The charging voltage has fallen below
10 volts and the ABS was switched off.
The battery may not be sufficiently charged.
Switch off electrical consumers that
are currently not needed, e.g. seat
heating.
If necessary, have the generator and
battery checked.
When the voltage is above this value
again, the ABS is operational again.
Page 336 of 473

335 Practical hints
What to do if …
Problem
Possible cause/consequence
Suggested solution
;
(USA only)
3
(Canada only)
The red brake warning lamp
comes on while driving and
you hear a warning sound.
You are driving with the parking brake set.
Release the parking brake
(page 54).
;
(USA only)
3
(Canada only)
The red brake warning lamp
comes on when the engine is
running and you hear a warn-
ing sound.
There is a malfunction in the
electro-hydraulic brake system.
There is insufficient brake fluid in the reser-
voir.
Read and observe messages in the
display (
page 347).
Risk of accident! Carefully stop the
vehicle in a safe location or as soon as
it is safe to do so and notify an autho-
rized Mercedes-Benz Center. Do not
add brake fluid! This will not solve the
problem.
Warning!
G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on. Do not add
brake fluid before checking the brake sys-
tem.
Overfilling the brake fluid reservoir can re-
sult in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You
can be seriously burned.!
If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.
Page 344 of 473

343 Practical hints
What to do if …
Problem
Possible cause/consequence
Suggested solution
H
USA only:
Combination low tire pressure/
TPMS malfunction telltale for
the TPMS illuminates continu-
ously.
Canada only:
Low tire pressure telltale for the
Advanced TPMS* illuminates
continuously.
The TPMS (USA only) or Advanced TPMS*
(Canada only) detects a loss of pressure in
at least one tire.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers. Observe the traffic situation
around you.
Read and observe messages in the mul-
tifunction display.
If the tire inflation pressure in the respec-
tive tire(s) has (have) been corrected, the
combination low tire pressure/TPMS mal-
function telltale goes out after few minutes
driving.
H
USA only:
Combination low tire pressure/
TPMS malfunction telltale for
the TPMS flashes for
60 seconds and then stays illu-
minated.
There is a malfunction in the TPMS.
Read and observe messages in the mul-
tifunction display.
Have the TPMS checked by an
authorized Mercedes-Benz Center.
After the malfunction has been remedied
the combination low tire pressure/TPMS
malfunction telltale goes out after few
minutes driving.
Page 346 of 473
345 Practical hints
What to do if …
Air bag off indicator lampProblem
Possible cause/consequence
Suggested solution
5/
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 passenger seat.
The system is malfunctioning.
Have the system checked as soon as
possible by an authorized
Mercedes-Benz Center.
Also read and observe any messages in
the multifunction display and follow cor-
rective steps (
page 356).
Warning!
G
If the5/indicator lamp illuminates
and remains illuminated with the weight of a
typical adult or someone larger than a small
individual on the passenger seat, do not
have any passenger use the passenger seat
until the system has been repaired.
Page 347 of 473

346 Practical hintsWhat to do if …Problem
Possible cause/consequence
Suggested solution
5/
The front passenger front air bag
off indicator lamp does not illumi-
nate and/or does not remain illu-
minated with the weight of a
typical 12-month-old child in a
standard child restraint or less on
the passenger 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 sup-
plemental weight onto the seat are
present.
If the front passenger front air bag off in-
dicator lamp remains out, have the sys-
tem checked as soon as possible by an
authorized Mercedes-Benz Center. Do
not transport a child on the passenger
seat until the system has been repaired.
Also read and observe any messages in
the multifunction display and follow cor-
rective steps (
page 356).
Warning!
G
If the5/indicator lamp does not il-
luminate 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 passenger seat until the system has
been repaired.
Page 348 of 473

347 Practical hints
What to do if …
Vehicle status messages in the multi-function display
Warning and malfunction messages ap-
pear in the in the multifunction display lo-
cated 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 152) displays both cleared and
uncleared messages.
High-priority messages appear in the mul-
tifunction display in red color.Certain messages of high priority cannot
be cleared from the multifunction display
using the reset button (
page 26) or but-
ton j, k, ÿ, or è on the
multifunction steering wheel.
Other messages of high priority and mes-
sages of less immediate priority can be
cleared from the multifunction display us-
ing the reset button or button j, k,
ÿ, or è on the multifunction steer-
ing wheel. They are then stored in the vehi-
cle status message memory (
page 152).
Remember that clearing a message will not
correct the condition that caused the mes-
sage to appear.
Warning!
G
All categories of messages contain impor-
tant information which should be taken note
of and, where a malfunction is indicated, ad-
dressed as soon as possible at an autho-
rized Mercedes-Benz Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property dam-
age or personal injury.
Page 349 of 473

348 Practical hintsWhat to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may ap-
pear in the multifunction display.
For your convenience the messages are di-
vided into two sections:
Text messages (
page 349)
Symbol messages (
page 365)
Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction dis-
play is inoperative. Contact your nearest au-
thorized Mercedes-Benz Center.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, do so with
added caution. Visit an authorized
Mercedes-Benz Center as soon as possible.
i
Switching on the ignition causes all instru-
ment cluster lamps (except high beam headlamp
indicator lamp and turn signal indicator lamps
unless activated) as well as the multifunction dis-
play to come on. Make sure the lamps and the
multifunction display are in working order before
starting your journey.
Page 350 of 473
349 Practical hints
What to do if …
Text messagesLeft display
Right display
Possible cause/consequence
Possible solution
ABC
Malfunction
Stop car
You have started driving although the
vehicle level is still too low.
The vehicle is being raised. The ABC
message goes out after a few seconds.
Stop your vehicle in a safe location or as
soon as it is safe to do so.
Wait until the message disappears from
the multifunction display.
You may then drive off.
The vehicle is losing oil.
The ABC message is continuously
shown.
Stop your vehicle in a safe location or as
soon as it is safe to do so.
Contact an authorized Mercedes-Benz
Center.