Safety systemsProblemPossible causes/consequences and M Solutions!
The yellow ABS warning
lamp is lit while the
engine is running.GRisk of accident
ABS (Anti-lock Brake System) is deactivated due to a malfunction.
BAS (Brake Assist), ESP ®
(Electronic Stability Program), EBD
(Electronic Brake force Distribution) and 4ETS are also temporarily
unavailable.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XObserve the additional display messages in the multifunction
display.XDrive on carefully.XVisit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic
transmission, will not be available.
!
The yellow ABS warning
lamp is lit while the
engine is running.GRisk of accident
The on-board voltage is too low. ABS has been deactivated due to
undervoltage.
ESP ®
, BAS, EBD and 4ETS are also therefore deactivated.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XObserve the additional display messages in the multifunction
display.XDrive on carefully.XSwitch off consumers that are not required, e.g. the rear window
defroster or interior lighting.
ABS will be available again as soon as the vehicle's on-board
electrical system voltage increases.
If the warning lamp is still on:
XHave the battery and alternator checked at a qualified specialist
workshop.!
The yellow ABS warning
lamp is lit while the
engine is running.You have engaged the differential locks. ABS, BAS, EBD, ESP ®
and
4ETS have been deactivated.XDisengage the differential locks.
ABS, BAS, EBD, ESP ®
and 4ETS are subsequently reactivated.Warning and indicator lamps in the instrument cluster185On-board computer and displaysZProCarManuals.com
ProblemPossible causes/consequences and M Solutions$ (USA only)
J (Canada only)
!
The red brake system
warning lamp and the
yellow ABS warning
lamp are on while
driving. In addition, a
warning tone sounds
for about five seconds.GRisk of accident
EBD is faulty.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XDrive on carefully.XVisit a qualified specialist workshop.÷
The yellow ESP ®
warning lamp flashes
while the vehicle is in
motion.GRisk of accident
ESP ®
or traction control is intervening because there is a risk of
skidding or at least one wheel has started to spin.
XOnly depress the accelerator pedal as far as necessary when
pulling away.XEase off the accelerator pedal after pulling away.XAdapt your driving style to suit the road and weather conditions.XDo not deactivate ESP ®
.
Exceptions: ( Y page 57).å
The yellow ESP ®
OFF
warning lamp is lit while
the engine is running.GRisk of accident
ESP ®
is deactivated. ESP ®
will not stabilize the vehicle if it starts
to skid or if a wheel starts to spin.
XReactivate ESP ®
.
Exceptions: ( Y page 57).XAdapt your driving style to suit the road and weather conditions.
If ESP ®
cannot be activated:
XHave ESP ®
checked at a qualified specialist workshop.186Warning and indicator lamps in the instrument clusterOn-board computer and displays
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ProblemPossible causes/consequences and M Solutionså
The yellow ESP ®
OFF
warning lamp is lit while
the engine is running.You have engaged the differential locks. ABS, ESP ®
, 4ETS and BAS
have been deactivated.XDisengage the differential locks.
ESP ®
, 4ETS and BAS are subsequently reactivated.XObserve the additional display messages in the multifunction
display.+
The red SRS warning
lamp is lit while the
engine is running.GRisk of injury
The restraint systems are malfunctioning. The air bags or ETDs
may either be triggered unintentionally or, in the event of an
accident, not be triggered at all.
XDrive on carefully.XVisit a qualified specialist workshop immediately.GWarning
In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be
operational.
For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center
immediately to have the system checked. Otherwise the SRS may not be activated when needed
in an accident, which could result in serious or fatal injury, or it might deploy unexpectedly and
unnecessarily which could also result in injury.
Warning and indicator lamps in the instrument cluster187On-board computer and displaysZProCarManuals.com
EngineProblemPossible causes/consequences and M Solutions! (USA only)
; (Canada only)
The yellow engine
diagnostics warning
lamp lights up while the
engine is running.There may be a malfunction, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system
R the fuel system
The emission limit values may be exceeded and the engine may
be running in emergency mode.XHave the vehicle checked as soon as possible at a qualified
specialist workshop.
i In some states/provinces, you are required by law to
immediately visit a qualified specialist workshop as soon as the
yellow Check Engine warning lamp lights up. If in doubt, check
whether such legal regulations apply in the state/province in
which you are currently driving.
! (USA only)
; (Canada only)
The yellow engine
diagnostics warning
lamp lights up while the
engine is running.The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.XCheck that the fuel filler cap is correctly closed.XIf the fuel filler cap is not correctly closed: close the fuel filler
cap.XIf the fuel filler cap is closed: visit a qualified specialist
workshop.The yellow reserve fuel
warning lamp lights up
while the engine is
running.The fuel filler cap is not correctly closed.XCheck that the fuel filler cap is correctly closed.XIf the fuel filler cap is not correctly closed: close the fuel filler
cap.XIf the fuel filler cap is closed: visit a qualified specialist
workshop.The yellow reserve fuel
warning lamp lights up
while the engine is
running.The fuel level has dropped into the reserve range.XRefuel at the nearest gas station.188Warning and indicator lamps in the instrument clusterOn-board computer and displays
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TiresProblemPossible causes/consequences and M Solutionsh
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
Canada only:
The yellow tire pressure
monitor warning lamp
(pressure loss) is lit.GRisk of accident
The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.XObserve the additional display messages in the multifunction
display.XCheck the tire pressure. If necessary, correct the tire pressure
( Y page 253).XIf necessary, change a wheel ( Y page 269).h
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
60 seconds and then
remains lit.The tire pressure monitor is defective.XObserve the additional display messages in the multifunction
display.XVisit a qualified specialist workshop.GWarning
Each tire, including the spare tire (if there is one), should be inspected at least every two weeks
when they are cold and pumped to the pressure recommended by the vehicle manufacturer (see
the tire and load data label on the B-pillar on the driver's side or the tire pressure table on the
inside of the fuel filler flap of your vehicle, if there is one). If your vehicle has tires which are a
different size to those on the tire and load data label or those specified in the tire pressure table,
if there is one, you should determine the correct tire pressure for these tires.
As an added safety feature, your vehicle has been equipped with a tire pressure monitor (TPMS).
An indicator lamp lights up if one or more of your tires are significantly underinflated. Accordingly,
when the low tire pressure indicator lamp lights up, you should stop and check your tires as soon
as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire
causes the tire to overheat and can lead to tire failure.
An excessively low tire pressure also increases fuel consumption, reduces the service life of the
tires and may impair the driving and braking characteristics of the vehicle. Please note that the
TPMS is not a substitute for proper tire maintenance and it is the driver's responsibility to maintain
correct tire pressure, even if underinflation has not reached the level at which the low tire
pressure indicator lamp of the TPMS lights up.
USA only:
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the
system is not operating properly. The TPMS malfunction indicator is combined with the low tire
pressure indicator lamp. When the system detects a malfunction, the indicator lamp will flash
Warning and indicator lamps in the instrument cluster189On-board computer and displaysZProCarManuals.com
for approximately one minute and then remain illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator
is lit, the system may not be able to detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible
replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction indicator after replacing one or more tires or wheels
on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to
continue to function properly.190Warning and indicator lamps in the instrument clusterOn-board computer and displays
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GWarning
A malfunction in the system has been
detected if any or all of the following
conditions occur:
R The indicator lamp in the SOS button does
not come on during the system self-test.
R The indicator lamp in Roadside Assistance
button º does not come on during the
system self-test.
R The indicator lamp in Information button
E does not come on during the system
self-test.
R The indicator lamp in the SOS button,
Roadside Assistance button º, or
Information button E remains
illuminated constantly in red after the
system self-test.
R The message Tele Aid Inoperative or
Tele Aid Not Activated appears in the
multifunction display after the system self-
test.
If a malfunction is indicated as outlined above,
the system may not operate as expected. In
case of an emergency, help will have to be
summoned by other means.
Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
R USA: Response Center under the number
1-888-990-9007
R Canada: Customer Service under
1-888-923-8367
Emergency call
Important safety notes
! A license agreement must exist in order
to activate the mbrace service. Make sure
that your system is activated and ready for
use, and press the E MB info call button
to register. If you cannot carry out any of
the steps mentioned, the system may not
be activated.
If you have any questions concerning
activation, please contact one of the
following service hotlines:
R USA: Response Center under
1-888-990-9007
R Canada: Customer Service under
1-888-923-8367
An emergency call is dialed automatically if
an air bag or Emergency Tensioning Device is
triggered.
i An automatically dialed mbrace
emergency call cannot be canceled.
An emergency call can also be initiated
manually.
As soon as the emergency call has been
initiated, the indicator lamp in the SOS button
flashes. The Connecting Call message
appears on the multifunction display.
COMAND is muted.
Once a connection has been established, the
Call Connected message appears in the
multifunction display.
All important information on the emergency
is provided, for example:
R current location of the vehicle (as
determined by the GPS system)
R vehicle model
R vehicle color
R vehicle identification number
A short time after the emergency call is
initiated, a voice connection is automatically
established between the Response Center
and the vehicle occupants. If the vehicle
occupants are able to respond, the Response
Center will attempt to obtain more detailed
information on the emergency.
i If no vehicle occupant answers, an
ambulance is immediately sent to the
vehicle.GWarning
If the indicator lamp in the SOS button is
flashing continuously and there was no voice
connection to the Response Center
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established, then the mbrace system could
not initiate an emergency call (e.g. the
relevant cellular phone network is not
available).
The message Call Failed appears in the
multifunction display for approximately
10 seconds.
Should this occur, assistance must be
summoned by other means.
Making an emergency callXTo initiate an emergency call
manually: press cover : briefly to open
it.XPress SOS button ; briefly.
The indicator lamp in SOS button ;
flashes until the emergency call is
concluded.XWait for the voice connection with the
Response Center.XAfter the emergency call is ended, close
cover :.GWarning
If you feel at any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle,
vehicle in a dangerous road location), please
do not wait for voice contact after you have
pressed the SOS button. Carefully leave the
vehicle and move to a safe location. The
Response Center will automatically contact
local emergency officials with the vehicle's
approximate location if they receive an
automatic SOS signal and cannot make voice
contact with the vehicle occupants.
Roadside Assistance buttonXOpen the stowage space under the armrest
( Y page 193).XPress and hold Roadside Assistance
button : for more than two seconds.
A call to a Mercedes-Benz Roadside
Assistance Representative is initiated. The
indicator lamp in Roadside Assistance
button : flashes while the call is active.
The Connecting call message appears in
the multifunction display and the COMAND
system is muted.
If a connection can be established, the Call
Connected message appears in the
multifunction display.
If a mobile phone network is available and
there is sufficient GPS reception, the mbrace
system transmits data to the Response
Center, for example:
R current location of the vehicle
R vehicle identification number
R vehicle model
R vehicle color
i The COMAND display shows that an
mbrace call is active. You can switch to the
navigation menu by pressing the NAVI
button on COMAND during the call. The
voice output is not available.
A voice connection is established between
the Mercedes-Benz Roadside Assistance
Representative and the vehicle occupants.
XDescribe the type of assistance needed.204FeaturesLoading, stowing and features
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