Page 361 of 506
360 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
1
The red SRS indicator lamp
comes on while driving.
There is a malfunction in the restraint sys-
tems. The air bags or emergency tensioning
devices (ETDs) could deploy unexpectedly or
fail to deploy in an accident.
Drive with added caution to the
nearest authorized Mercedes-Benz
Center.
Warning!
G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not be deployed when needed in an acci-
dent, which could result in serious or fatal
injury, or it might deploy unexpectedly and
unnecessarily which could also result in an
accident and / or injury to you or to others.
Page 362 of 506
361 Practical hints
What to do if …?
Lamp in center consoleProblem
Possible cause
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 Center.
Also note any messages in the multi-
function display and follow corrective
steps (
page 369).
Warning!
G
If the 56 lamp illuminates and re-
mains illuminated with the weight of a typi-
cal 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 363 of 506

362 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
56
The front passenger front air bag
off indicator lamp does not illu-
minate 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 passenger seat.
The system is malfunctioning.
Make sure that there is nothing be-
tween 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 possible
by an authorized Mercedes-Benz Cen-
ter. Do not transport a child on the
front passenger seat until the system
has been repaired.
Also note any messages in the multi-
function display and follow corrective
steps (
page 369).
Warning!
G
If the 56 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 front passenger seat until the system
has been repaired.
Page 364 of 506

363 Practical hints
What 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 141) 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 130) or
button k,j, è, orÿ 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 130) or
button k,j, è, orÿ on the
steering wheel. They are then stored in the
vehicle status message memory
(
page 141). Remember that clearing a
message will only make the message dis-
appear. 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 365 of 506
364 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
appear in the display.
For your convenience the messages are
divided into two sections:
Text messages (
page 365)
Symbol messages (
page 374)
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 the multifunction display are
in working order before starting your
journey.
Page 371 of 506

370 Practical hintsWhat to do if …?Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
activated
see Oper.’s Man.
If performing any of the above corrective
steps is successful, the message
Front
passenger airbag deactivated see
Oper.’s Man.
will appear in the
multifunction display, confirming the situ-
ation has been remedied. Note that after
performing the corrective steps, it may
take up to 60 seconds for the message
Front passenger airbag deactivated
see Oper.’s Man.
to appear.
If the message
Front passenger airbag
activated see Oper.’s Man.
remains on
in the multifunction display and/or the
56
indicator lamp remains out even
after performing the above corrective
steps, have the system checked as soon
as possible by an authorized
Mercedes-Benz Center.
Warning!
G
If the message
Front passenger airbag
activated see Oper.’s Man.
remains
on in the multifunction display and/or the
56 indicator lamp remains out even
after performing the above corrective steps,
do not have any children12 years old and
under and other small individuals use the
front passenger seat until the system has
been repaired.
Page 373 of 506

372 Practical hintsWhat to do if …?Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
deactivated
see Oper.’s Man.
Note that after performing the corrective
steps, it may take up to 60 seconds for
the message
Front passenger airbag
activated see Oper.’s Man.
to appear.
If the message
Front passenger airbag
deactivated see Oper.’s Man.
remains
on in the multifunction display and/or the
56
indicator lamp remains on even
after performing the above corrective
steps, have the system checked as soon
as possible by an authorized
Mercedes-Benz Center.
Do not have any passenger use the front
passenger seat until the system has been
repaired.
Warning!
G
If the message
Front passenger airbag
deactivated see Oper.’s Man.
re-
mains on in the multifunction display and/or
the 56 indicator lamp remains illumi-
nated even after performing the above cor-
rective steps, do not have any passenger
use the front passenger seat until the sys-
tem has been repaired.
Page 376 of 506

375 Practical hints
What to do if …?
Display symbol
Display message
Possible cause
Possible solution
2
Brake wear
Visit workshop
The brake pads have reached their wear
limit.
Have the brake pads replaced as soon
as possible.
;
(USA only)
!
(Canada only)
Parking brake
Release brake!
You are driving with the parking brake set.
Release the parking brake
(page 49).
3
Brake fluid
Visit workshop
There is insufficient brake fluid in the res-
ervoir.
Risk of accident! Stop the vehicle and
notify an authorized Mercedes-Benz
Center. Do not add brake fluid! This
will not solve the problem.
Warning!
G
Driving with this message displayed can re-
sult in an accident. Have your brake system
checked immediately. Don’t add brake fluid
before checking the brake system. Overfill-
ing the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and
the brake fluid catching fire. You can be se-
riously 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.
!Brake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Maintenance
Booklet.