
ProblemPossible causes/consequences andMSolutions
÷ 
The yellow ESP®
warn-
ing lamp flashes while 
the vehicle is in motion.ESP ®
or traction control has intervened because there is a risk of
skidding or at least one wheel has started to spin. 
Cruise control or DISTRONIC PLUS is deactivated.
X When pulling away, only depress the accelerator pedal as far as
necessary.
X Ease off the accelerator pedal while the vehicle is in motion.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
.
In rare cases ( Ypage 64), it may be best to deactivate ESP ®
.
Observe the important safety notes on ESP ®
(Y page 64).
å 
The yellow ESP ®
OFF
warning lamp is lit while the engine is running.ESP ®
is deactivated.
GWARNING
If ESP ®
is switched off, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Reactivate ESP ®
.
In rare cases ( Ypage 64), it may be best to deactivate ESP ®
.
Observe the important safety notes on ESP ®
(Y page 64).
X Adapt your driving style to suit the road and weather conditions.
If ESP ®
cannot be activated:
X Drive on carefully.
X Have ESP ®
checked at a qualified specialist workshop.
M 
AMG vehicles only: 
The yellow SPORT han- 
dling mode warning
lamp is lit while the
engine is running.SPORT handling mode is activated.
GWARNING
When SPORT handling mode is switched on, ESP ®
is unable to
stabilize the vehicle. 
There is an increased risk of skidding and an accident.
X Only switch on SPORT handling mode in certain situations (Y page 65).
Warning and indicator lamps249
On-board computer and displays
Z 

ProblemPossible causes/consequences andMSolutions
F(USA only)
! (Canada only)
The red electric parking 
brake indicator lamp
flashes or lights upand/or ! 
the yellow warning 
lamp for the electric
parking brake lights up.X Observe the additional display messages in the multifunction 
display.
6 
The red restraint sys- 
tem warning lamp is lit
while the engine is run-ning.The restraint system is faulty.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be triggered. 
There is an increased risk of injury.
X Drive on carefully.
X Have the restraint system checked immediately at a qualified 
specialist workshop.
For further information about the restraint system, see( Y page 40).
Warning and indicator lamps251
On-board computer and displays
Z 

Engine
ProblemPossible causes/consequences andMSolutions
; 
The yellow Check 
Engine 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 in the fuel system
The emission limit values may be exceeded and the engine may be
in emergency mode.
X Have the vehicle checked as soon as possible at a qualified 
specialist workshop.
iIn some states, you must immediately visit a qualified special-
ist workshop as soon as the yellow Check Engine warning lamp
lights up. This depends on the locally applicable legal require- 
ments. If in doubt, check whether such legal regulations apply in the state in which you are currently driving.
8 
The yellow reserve fuel 
warning lamp lights up
while the engine is run-
ning.The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station.
8 
The yellow reserve fuel 
warning lamp flashes
while the vehicle is in
motion. 
In addition, the ;
Check Engine warning 
lamp may light up.The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist work-
shop.
? 
The red coolant warn- 
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the start of the scale.The temperature sensor for the coolant temperature gauge is 
defective. 
The coolant temperature is no longer being monitored. There is arisk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine, 
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away ( Ypage 161).
X Consult a qualified specialist workshop.
252Warning and indicator lamps
On-board computer and displays 

ProblemPossible causes/consequences andMSolutions
? 
The red coolant warn- 
ing lamp comes on
while the engine is run-ning.The coolant level is too low. 
If the coolant level is correct, the airflow to the engine radiator may
be blocked or the electric engine radiator fan may be malfunc- tioning. 
The coolant is too hot and the engine is no longer being cooled sufficiently.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Ypage 161).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes ( Ypage 283).
X If you have to add coolant frequently, have the engine cooling
system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the coolant temperature is
below 248 ‡(120 †). Otherwise, the engine could be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic.
? 
The red coolant warn- 
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.The coolant temperature has exceeded 248 ‡ (120 †). The air- 
flow to the engine radiator may be blocked or the coolant level may
be too low.
GWARNING
The engine is not being cooled sufficiently and may be damaged. 
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to 
catch fire. 
Steam from the overheated engine can also cause serious burns 
which can occur just by opening the hood. 
There is a risk of injury. X Observe the additional display messages in the multifunction 
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Ypage 161).
Warning and indicator lamps253
On-board computer and displays
Z 

Tires
ProblemPossible causes/consequences andMSolutions
h 
The yellow tire pressure
monitor warning lamp 
(pressure loss/
malfunction) is lit.The tire pressure monitor has detected a loss of pressure in at 
least one of the tires.
GWARNING
With tire pressures which are too low, there is a risk of the fol- 
lowing hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired. 
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Ypage 161).
X Observe the additional display messages in the multifunction 
display.
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Ypage 295).
X Check the tire pressure ( Ypage 320).
X If necessary, correct the tire pressure.
h 
The yellow tire pressure
monitor warning lamp 
(pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit.The tire pressure monitor is faulty.
GWARNING
The system is possibly unable to recognize or register low tire 
pressure. 
There is a risk of an accident.
X Observe the additional display messages in the multifunction 
display.
X Visit a qualified specialist workshop.
Warning and indicator lamps255
On-board computer and displays
Z 

Emergency call
Important safety notes
GWARNING
It can be dangerous to remain in the vehicle, 
even if you have pressed the SOS button in anemergency if:
R you see smoke inside or outside of the vehi-
cle, e.g. if there is a fire after an accident
R the vehicle is on a dangerous section ofroad
R the vehicle is not visible or cannot easily be
seen by other road users, particularly whendark or in poor visibility conditions
There is a risk of an accident and injury. 
Leave the vehicle immediately in this or simi-
lar situations as soon as it is safe to do so. 
Move to a safe location along with other vehi-
cle occupants. In such situations, secure the
vehicle in accordance with national regula-
tions, e. g. with a warning triangle.
You must have a license agreement to acti-
vate the mbrace service. Make sure that your
system is activated and operational. To reg-
ister, press the ïMB Info call button. If
any of the steps mentioned are not carried
out, the system may not be activated. 
If you have questions about the activation, 
contact one of the following telephone hot-
lines:
R USA: Mercedes-Benz Customer Assistance
Center at 1-800-FOR-MERCedes
(1-800-367-6372 )or 1-866-990-9007
R Canada: Customer Service at
1-888-923-8367
General notes 
An emergency call is dialed automatically if an air bag or Emergency Tensioning Device is triggered.
iYou cannot end an automatically trig-
gered emergency call yourself.
An emergency call can also be initiated man- ually. As soon as the emergency call has been ini- 
tiated, the indicator lamp in the SOS button
flashes. The multifunction display shows the
Connecting Callmessage.
The audio output is muted. 
Once the connection has been made, the
Call Connectedmessage appears in the
multifunction display. 
All important information on the emergency is
transmitted, for example:
R current location of the vehicle (as deter- 
mined by the GPS system)
R vehicle identification number
R information on the severity of the accident
Shortly after the emergency call has been ini- tiated, a voice connection is automatically
established between the Customer Assis-
tance Center and the vehicle occupants.
R If the vehicle occupants respond, the
Mercedes-Benz Customer Assistance Cen-
ter attempts to get more information on the emergency.
R If there is no response from the vehicle
occupants, an ambulance is immediately
sent to the vehicle.
If no voice connection can be established to
the Mercedes-Benz Customer Assistance
Center, the system has been unable to initiate an emergency call. 
This can occur, for example, if the relevant 
mobile phone network is not available. The
indicator lamp in the SOS button flashes con- tinuously. The
Call Failedmessage appears in the
multifunction display and must be confirmed.
In this case, summon assistance by other means.
Features265
Stowage and features
Z 

Making an emergency call
XTo initiate an emergency call manually: 
press cover :briefly to open.
X Press SOS button ;briefly.
The indicator lamp in SOS button ;
flashes until the emergency call is conclu- ded.
X Wait for a voice connection to the
Mercedes-Benz Customer Assistance Cen-ter.
X After the emergency call, close cover :.
iIf the mobile phone network is unavaila-
ble, mbrace will not be able to make the 
emergency call. If you leave the vehicle
immediately after pressing the SOS button,
you will not know whether mbrace placed
the emergency call. In this case, always
summon assistance by other means.
Roadside Assistance button
X Press Roadside Assistance button :.
This initiates a call to the Mercedes-Benz 
Customer Assistance Center. The indicator lamp in Roadside Assistancebutton
:flashes while the call is active.
The multifunction display shows the
ConZ
necting Callmessage. The audio output
is muted.
If a connection can be made, the
Call ConZ
nectedmessage appears in the multifunction
display. 
If a mobile phone network and GPS reception are available, the system transfers data to the 
Mercedes-Benz Customer Assistance Center, for example:
R current location of the vehicle
R vehicle identification number
iThe audio system or COMAND display
indicates that a call is active. During the 
call, you can change to the navigation menu
by pressing the NAVI button on COMAND,
for example. 
Voice output is not available.
A voice connection is established between 
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants. 
From the remote malfunction diagnosis, the 
Mercedes-Benz Customer Assistance Center
can ascertain the nature of the problem( Y page 270).
The Mercedes-Benz Customer Assistance
Center either sends a qualified Mercedes-
Benz technician or makes arrangements for
your vehicle to be transported to the nearest
authorized Mercedes-Benz Center. 
You may be charged for services such as 
repair work and/or towing. 
Further details are available in your mbrace 
manual.
iThe system has not been able to initiate a
Roadside Assistance call, if:
R the indicator lamp for Roadside Assis- 
tance call button :is flashing continu-
ously.
R no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
266Features
Stowage and features   

This can occur if the relevant mobile phonenetwork is not available, for example. The
Call Failedmessage appears in the
multifunction display.
X To end a call: press the~button on the
multifunction steering wheel.
or
X Press the corresponding button for ending 
a phone call on the audio system or on
COMAND.
MB Info call button
XPress MB Info call button :.
This initiates a call to the Mercedes-Benz 
Customer Assistance Center. 
The indicator lamp in MB Info call button :
flashes while the connection is being made.
The multifunction display shows the
ConZ
nectingCallmessage. The audio system
is muted.
If a connection can be made, the
Call ConZ
nectedmessage appears in the multifunction
display. 
If a mobile phone network and GPS reception are available, the system transfers data to the 
Mercedes-Benz Customer Assistance Center, for example:
R current location of the vehicle
R vehicle identification number
iThe audio system or COMAND display
indicates that a call is active. During the 
call, you can change to the navigation menu by pressing the NAVI button on COMAND,
for example. 
Voice output is not available.
A voice connection is established between 
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants. 
You receive information about operating your vehicle, about the nearest authorized 
Mercedes-Benz Center and about other prod-
ucts and services from Mercedes-Benz. 
USA only: you can find further information on
the mbrace system under "Owners Online" at
http://www.mbusa.com.
iThe system has not been able to initiate
an MB Info call, if:
R the indicator lamp in MB Info call but- ton :is flashing continuously.
R no voice connection to the Mercedes-
Benz Customer Assistance Center wasestablished.
This can occur if the relevant mobile phone network is not available, for example. The
Call Failedmessage appears in the
multifunction display.
X To end a call: press the~button on the
multifunction steering wheel.
or
X Press the corresponding button for ending 
a phone call on the audio system or on
COMAND.
Call priority
When service calls are active, e.g. Roadside 
Assistance or MB Info calls, an emergency
call can still be initiated. In this case, an emer-
gency call will take priority and override all
other active calls. 
The indicator lamp of the respective button 
flashes until the call is ended. 
An emergency call can only be terminated by the Mercedes-Benz Customer Assistance Center.
Features267
Stowage and features
Z