
ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.EBD is not available due to a malfunction. Therefore, ABS, BAS,
BAS PLUS with Cross-Traffic Assist, COLLISION PREVENTION
ASSIST PLUS, ESP
®, PRE‑SAFE®, PRE‑SAFE®PLUS, PRE‑SAFE®
Brake, the HOLD function and hill start assist, for example, are also
unavailable.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
$ (USA only)
J (Canada only)
֌!
The red brake warning
lamp, the yellow ESP
®
and ESP®OFF warning
lamps and the yellow
ABS warning lamp are
lit while the engine is
running.
ABS and ESP®are not available due to a malfunction. Therefore,
BAS, BAS PLUS with Cross-Traffic Assist, COLLISION PREVEN-
TION ASSIST PLUS, EBD, PRE ‑SAFE
®, PRE‑SAFE®PLUS,
PRE‑SAFE®Brake, the HOLD function and hill start assist, for
example, are also unavailable.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
206Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
֌
The yellow ESP
®and
ESP®OFF warning
lamps are lit while the
engine is running.
ESP®, BAS, BAS PLUS with Cross-Traffic Assist, COLLISION PRE-
VENTION ASSIST PLUS, PRE ‑SAFE®, PRE‑SAFE®PLUS,
PRE‑SAFE®Brake, the HOLD function and hill start assist are
unavailable due to a malfunction.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
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.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XHave the restraint system checked immediately at a qualified
specialist workshop.
Observe the additional information on restraint systems
(
Ypage 48).
208Warning and indicator lamps in the instrument cluster
On-board computer and displays

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:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 151).
XObserve the additional display messages in the multifunction
display.
XCheck the tires and, if necessary, follow the instructions for a
flat tire (
Ypage 271).
XCheck the tire pressure (Ypage 294).
XIf 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.
XObserve the additional display messages in the multifunction
display.
XVisit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster211
On-board computer and displays
Z

On the mobile phone
XSwitch on the mobile phone and enter the
PIN when prompted to do so (see the man-
ufacturer's operating instructions).
XActivate Bluetooth®and, if necessary,
Bluetooth®visibility for other devices (see
the manufacturer's operating instructions).
This visibility is for restricted periods of
time on some mobile phones (see the man-
ufacturer's operating instructions).
XSet the Bluetooth®device name for the
mobile phone if necessary.
The Bluetooth
®device names for all of one
manufacturer's products might be identical.
To make it possible to clearly identify your
mobile phone, change the device name (see
the manufacturer's operating instructions).
The name can be freely selected.
If the mobile phone supports the PBAP
(Phone BookAccess Profile) and MAP
(Message AccessProfile) Bluetooth
®pro-
files, the following information will be trans-
mitted after you connect:
RPhone book
RCall lists
RMessages
The battery of the mobile phone should
always be kept sufficiently charged in order to
prevent malfunctions.
iNot all mobile phones available on the
market are equally suitable. You can obtain
more detailed information about suitable
mobile phones and about the connection
between the mobile phone and Audio 20/
COMAND on the Internet at
http://www.mbusa-mobile.com .
You can also obtain more information by
calling.
In the USA, you can get in touch with the
Mercedes-Benz Customer Assistance Cen-
ter on 1-800-FOR-MERCedes
(1-800-367-6372). In Canada, you can get in touch with the
Customer Relations Center on
1-800-387-0100.
iSome displays (e.g. the signal strength)
depend on the supported version of the
Hands-Free Profile.
Procedure and general information
Searching for and authorizing (connect-
ing) a mobile phone
Before using your mobile phone with Audio
20/COMAND for the first time, you will need
to search (
Ypage 229) for the phone and
then authorize it (
Ypage 229). Depending on
the mobile phone, authorization either takes
place by means of Secure Simple Pairing or by
entering a passkey. Audio 20/COMAND
automatically makes the system suitable for
your mobile phone available. You can recog-
nize Secure Simple Pairing by a code which is displayed in Audio 20/COMAND and on the
mobile phone. You can recognize the passkey
system by the fact that you have to enter a
code on the mobile phone and in Audio 20/
COMAND. The mobile phone is always con-
nected automatically after authorization.
If Audio 20/COMAND does not detect your
mobile phone, this may be due to particular
security settings on your mobile phone. You
can also start the search procedure and
authorization on the mobile phone
(
Ypage 230).
Device-specific information on authorizing
and connecting Bluetooth
®-capable mobile
phones can be found on the Internet at
http://www.mercedes-benz.com/
connect.
You can authorize up to 15 mobile phones.
Only one mobile phone can be connected to
Audio 20/COMAND at any one time.
De-authorizing (disconnecting) a mobile
phone
The connection is terminated automatically if
you leave the receiver range of Audio 20/
228Audio 20/COMAND operating system
Audio 20/COMAND

Information in the Digital Operator's
Manual
Inthe Digital Operator's Manual you willfind
information on the following topics:
RVanit y mirror inthe sun visor
RGlare from the side
mbrace
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you willfind
information on the following topics:
RDownloading destinations inCOMAND
RSe arch & Send
RVehicle remote opening
RVehicle remote closing
RStolen vehicle recovery service
RVehicle remote malfunction diagnosis
RDownloading routes
RSp eed alert
RGeo fencing
RTriggering the vehicle alarm
iThe mbrace system isonly availab le inthe
USA.
General notes
The mbrace system is only availablein the
USA.
You must have a license agreement to acti-
vate the mbrace service. Make sure that your system isactivated and operational. To log in,
press the ïMBInfo call button. Ifany 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 fol lowing telephone hot-
lin es:
Mercedes-Benz Customer Assistance Center
at 1-800-FOR-M ERCedes (1-800-367-6372)
or 1-866-990-9007 Sh
ort lyafter successfully registering with the
mbrace service, a user IDand password will
be sent to you bymail. You can use th ispass-
word to log onto the mbrace area under "Own-
ers Onlin e" athttp://www.mbusa.com .
The system isavailab leif:
Rit has been activated and isoperational
Rthe corresponding mob ilephone network is
availab lefor transmitting data to the Cus-
tomer Center
Ra servic e subscr iption isavailab le
Rthe starter battery issufficiently charged
Determining the location of the vehicle on a
map isonly possible if:
RGPS reception isavailable.
Rthe vehicle posit ion canbeforwarded to
the Customer Assistance Center.
The mbrace system
To adjust the volume during a call, proceed as
follows:
XPress the WorX button on the mul-
tifunction steering wheel.
or
XUse the COMAND/A udio 20 volume con-
trol.
The system offers various servic es, e.g.:
RAutomaticand manual emergency call
RRoadside Assistance call
RMB Info call
You can find information and a description of
all availab lefeatures under "Owners Online"
at http:/ /www.mbusa.com.
System self-test
After you have switched on the ignit ion, the
system carries out a self-diagnosis.
252Features
Stowage and features

A malfunction in the system has been detec-
ted if one of the following occurs:
RThe indicator lamp in the SOS button doesnot come on during the system self-test.
RThe indicator lamp in the FRoadside
Assistance button does not light up during
self-diagnosis of the system.
RThe indicator lamp in the ïMB Info call
button does not light up during self-diag-
nosis of the system.
RThe indicator lamp in one or more of the
following buttons continues to light up red
after the system self-diagnosis:
-SOS button
-F Roadside Assistance call button
-ïMB Info call button
RTheInoperativeor the Service Not
Activatedmessage appears in the multi-
function display after the system self-diag-
nosis.
If a malfunction is indicated as outlined
above, the system may not operate as expec-
ted. In the event 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:
Mercedes-Benz Customer Assistance Center
at 1-800-FOR-MERCedes (1-800-367-6372)
or 1-866-990-9007
Emergency call
Important safety notes
GWARNING
It can be dangerous to remain in the vehicle,
even if you have pressed the SOS button in an emergency if:
Ryou see smoke inside or outside of the vehi-
cle, e.g. if there is a fire after an accident
Rthe vehicle is on a dangerous section of
road
Rthe vehicle is not visible or cannot easily beseen by other road users, particularly when
dark 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.
General notes
Observe the notes on system activation
(
Ypage 252).
An emergency call is dialed automatically if an
air bag or Emergency Tensioning Device is
triggered. You cannot end an automatically
triggered 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 Connecting Call
message
appears in the multifunction display.
The audio output is muted.
Once the connection has been made, the
Call Connected
message appears in the
multifunction display.
Features253
Stowag ean d features
Z

If a mobile phone network and GPS reception
are available, the system transfers data to the
Mercedes-Benz Customer Assistance Center,
for example:
Rcurrent location of the vehicle
Rvehicle identification number
The COMAND/Audio 20 display indicates
that a call is active. During the call, you can
change to the navigation menu by pressing
the NAVI button in COMAND/Audio 20, for
example.
Voice output is not available in this case.
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. In
the Digital Operator's Manual, you will find
information on remote malfunction diagno-
sis.
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.
You can find more information in the separate
mbrace manual.
The system has not been able to initiate a
Roadside Assistance call, if:
Rthe indicator lamp for Roadside Assistance
call button Fis flashing continuously.
Rno voice connection to the Mercedes-Benz
Customer Assistance Center was estab-
lished.
This can occur if the relevant mobile phone
network is not available, for example.
The Call Failed
message appears in the
multifunction display.
XTo end a call: press the~button on the
multifunction steering wheel.
or
XPress the corresponding COMAND/Audio
20 button for ending a phone call.
MB Info call button
XTo call MB Info: press MB Info call but-
ton :.
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 Connecting
Callmessage appears in
the multifunction display. The audio output
is muted.
If a connection can be made, the Call Con‐
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:
Rcurrent location of the vehicle
Rvehicle identification number
The COMAND/Audio 20 display indicates
that a call is active. During the call, you can
change to the navigation menu by pressing
the NAVI button in COMAND/Audio 20, for
example.
Voice output is not available in this case.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants.
Features255
Stowage and features
Z

XSlide cover:of positive terminal ;in the direction of the arrow.
XConnect positive terminal ;on your vehicle to positive terminal =of donor battery B
using the jumper cable, always begin with positive terminal ;on your own vehicle first.
XStart the engine of the donor vehicle and run it at idling speed.
XConnect negative terminal ?of donor battery Bto ground point Aof your vehicle using
the jumper cable, connecting the jumper cable to battery of other vehicle Bfirst.
XStart the engine.
XBefore disconnecting the jumper cables, let the engine run for several minutes.
XFirst, remove the jumper cables from ground point Aand negative terminal ?, then from
positive clamp ;and positive terminal =. Begin each time at the contacts on your own
vehicle first.
XClose cover :of positive clamp ;after removing the jumper cables.
XHave the battery checked at a qualified specialist workshop.
iJump-starting is not considered to be a normal operating condition.
iJumper cables and further information regarding jump-starting can be obtained at any
qualified specialist workshop.
Towing and tow-starting
Important safety notes
GWARNING
Functions relevant to safety are restricted or
no longer available if:
Rthe engine is not running.
Rthe brake system or the power steering is
malfunctioning.
Rthere is a malfunction in the voltage supply or the vehicle's electrical system.
If your vehicle is being towed, much more
force may be necessary to steer or brake.
There is a risk of an accident.
In such cases, use a tow bar. Before towing,
make sure that the steering moves freely.
GWARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible
gross weight of your vehicle, the:
Rthe towing eye could detach itself
Rthe vehicle/trailer combination could roll-
over.
There is a risk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of your vehicle.
iDetails on the permissible gross vehicle
weight of your vehicle can be found on the
vehicle identification plate (
Ypage 336).
!If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations.
To prevent damage to the vehicle, deacti-
vate DISTRONIC PLUS and the HOLD func- tion in the following or other similar situa-
tions:
Rwhen towing the vehicle
Rin the car wash
!Only secure the tow rope or tow bar at the
towing eyes. Otherwise, the vehicle could
be damaged.
!Do not use the towing eye for recovery,
this could damage the vehicle. If in doubt,
recover the vehicle with a crane.
Towing and tow-starting281
Roadside Assistance
Z