
Socket in the rear-compartment center
console X
Pull cover :out by its top edge.
X Lift up the cover of socket ;.
Socket in the cargo compartment X
Lift up the cover of socket :.mbrace
General notes The mbrace system is only available in the
USA.
You must have a license agreement to acti-
vate the mbrace service. Make sure that your system is activated and operational. To log in,
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: Mercedes-Benz Customer Assistance Center
at 1-800-FOR-MERCedes (1-800-367-6372)
or 1-866-990-9007
Shortly after successfully registering with the
mbrace service, a user ID and password will
be sent to you by mail. You can use this pass-
word to log onto the mbrace area under "Own-
ers Online" at http://www.mbusa.com.
The system is available if:
R it has been activated and is operational
R the corresponding mobile phone network is
available for transmitting data to the Cus-
tomer Center
R a service subscription is available
R the starter battery is sufficiently charged
Determining the location of the vehicle on a
map is only possible if:
R GPS reception is available.
R the vehicle position can be forwarded to
the Customer Assistance Center.
The mbrace system To adjust the volume during a call, proceed as
follows:
X Press the WorX button on the mul-
tifunction steering wheel.
or
X Use the COMAND/Audio 20 volume con-
trol.
The system offers various services, e.g.:
R Automatic and manual emergency call
R Roadside Assistance call
R MB Info call
You can find information and a description of all available features under "Owners Online"
at http://www.mbusa.com.
System self-test After you have switched on the ignition, the
system carries out a self-diagnosis. Features
253Stowage and features Z 

A malfunction in the system has been detec-
ted if one of the following occurs:
R The indicator lamp in the SOS button does
not come on during the system self-test.
R The indicator lamp in the FRoadside
Assistance button does not light up during
self-diagnosis of the system.
R The indicator lamp in the ïMB Info call
button does not light up during self-diag-
nosis of the system.
R The 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
- ï MB Info call button
R The Inoperative
Inoperative or theService Not Service Not
Activated
Activated message 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-MERCede s (1-800-367-6372)
or 1-866-990-9007 Emergency call Important safety notes
G
WARNING
It can be dangerous to remain in the vehicle,
even if you have pressed the SOS button in an emergency 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 of
road
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.
General notes
Observe the notes on system activation
(Y page 253).
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 Connecting Call message
appears in the multifunction display.
The audio output is muted.
Once the connection has been made, the
Call Connected Call Connected message appears in the
multifunction display. 254
FeaturesSto
wage an d features 

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 Failed Call Failed message appears in the
multifunction display and must be confirmed.
In this case, summon assistance by other
means.
Making an emergency call X
To 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 :.
If the mobile phone network is unavailable,
mbrace will not be able to make the emer-
gency call. If you leave the vehicle immedi-
ately after pressing the SOS button, you will
not know whether mbrace placed the emer-
gency call. In this case, always summon assis-
tance by other means.
Roadside Assistance button X
To call Roadside Assistance: press Road-
side Assistance button :.
This initiates a call to the Mercedes-Benz
Customer Assistance Center.
The indicator lamp in Roadside Assistance
button :flashes while the call is active.
The Connecting Connecting Call
Callmessage appears in
the multifunction display. The audio output is muted.
If a connection can be made, the Call Con‐
Call Con‐
nected
nected message appears in the multifunction
display. Features
255Stowage an 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:
R current location of the vehicle
R vehicle 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
(Y page 259).
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 separatembrace manual.
The system has not been able to initiate a
Roadside Assistance call, if:
R the indicator lamp for Roadside Assistance
call button Fis flashing continuously.
R no 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
Call Failed message appears in the
multifunction display.
X To end a call: press the~button on the
multifunction steering wheel.
or
X Press the corresponding COMAND/Audio
20 button for ending a phone call. MB Info call button
X
To 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 Connecting Call Callmessage appears in
the multifunction display. The audio output
is muted.
If a connection can be made, the Call Con‐
Call Con‐
nected
nected message 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
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.
You receive information about operating your vehicle, about the nearest authorized
Mercedes-Benz Center and about other prod-
ucts and services from Mercedes-Benz. 256
FeaturesStowage and features 

You can find further information on the
mbrace system under "Owners Online" at
http://www.mbusa.com.
The system has not been able to initiate an
MB Info call, if:
R the indicator lamp in MB Info call button
ï is flashing continuously.
R no 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
Call Failed message appears in the
multifunction display.
X To end a call: press the~button on the
multifunction steering wheel.
or
X Press the corresponding COMAND/Audio
20 button for ending a phone call.
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.
All other calls can be ended by pressing:
R the ~ button on the multifunction steer-
ing wheel
R the corresponding button in COMAND/
Audio 20 to end the voice call
When a call is initiated, the audio system is
muted.
The mobile phone is no longer connected to
COMAND/Audio 20.
However, if you want to use your mobile
phone, do so only when the vehicle is station-
ary and in a safe location. Downloading destinations Downloading destinations
Downloading destinations gives you access
to a database with over 15 million points of
interest (POIs). These can be downloaded on
the navigation system in your vehicle. If you
know the destination, the address can be
downloaded. Alternatively, you can obtain the
location of Points of Interest (POIs)/impor-
tant destinations in the vicinity.
Furthermore, you can download routes with
up to four way points.
You are prompted to confirm route guidance
to the address entered.
X Select Yes
Yes by turning cVdor sliding XVY
the controller and confirm with W.
The system calculates the route and sub-
sequently starts the route guidance with
the address entered.
If you select No Nothe address can be stored in
the address book.
The destination download function is availa-
ble if: R the vehicle is equipped with a navigation
system.
R the relevant mobile phone network is avail-
able and data transfer is possible.
Route Assistance
This service is part of the mbrace PLUS Pack-
age and cannot be purchased separately.
You can use the route assistance function
even if the vehicle is not equipped with a nav- igation system.
Within the framework of this service, you
receive a professional and reliable form of
navigation support without having to leave
your vehicle.
The customer service representative finds a
suitable route depending on your vehicle's
current position and the desired destination.
You will then be guided live through the cur-
rent route section. Features
257Stowage and features Z 

X
Press the Yes
Yesbutton to confirm the mes-
sage.
X When the Vehicle Diagnostics
Vehicle Diagnostics
Please Start Ignition
Please Start Ignition message
appears: turn the SmartKey to position 2in
the ignition lock (Y page 131).
X If the Please follow the instruc‐
Please follow the instruc‐
tions received by phone and move
tions received by phone and move
your vehicle to a safe position. your vehicle to a safe position.
message appears: please follow the
instructions received by phone and move
your vehicle to a safe position.
The message in the display disappears.
The vehicle operating state check begins.
During this procedure, you will see the
Vehicle Vehicle Diagnostics
Diagnostics Active
Activemessage.
If you select Cancel
Cancel, the Vehicle Health
Check is canceled completely.
When the check is complete, the Sending
Sending
vehicle diagnostics data. (Voice
vehicle diagnostics data. (Voice
connection may be interrupted dur‐ connection may be interrupted dur‐
ing
ing data
data transfer)
transfer) message appears. The
vehicle data can now be sent.
X Press the OK
OK button to confirm the mes-
sage.
The voice connection with the Customer
Assistance Center is terminated.
The Vehicle Diagnostics: Transfer‐
Vehicle Diagnostics: Transfer‐
ring Data...
ring Data... message appears.
The vehicle data is sent to the Customer
Assistance Center.
Depending on what the customer service rep-
resentative agreed with you, the voice con-
nection is re-established after the transfer is
complete. If necessary, you will be contacted at a later time by another means, e.g. by e-
mail or phone.
Another function of the Vehicle Health Check is the transfer of service data to the Customer
Assistance Center. If a service is due, the dis-
play shows a message to this effect together with information about any special offers at
your workshop.
This information can also be called up under
"Owners Online" at http://www.mbusa.com. Information on the data stored in the vehicle
(Y
page 26).
Information on Roadside Assistance
(Y page 21).
Downloading routes Downloading routes allows you to transfer
and save predefined routes in the navigation
system.
A route can be prepared and sent by either a customer service representative or under
"Owners Online" at http://www.mbusa.com.
Each route can include up to four way points. Once a route has been received by the navi-
gation system, you will see the The The
name> external
external route
routehas
hasbeen
been saved
saved
to "Previous Destinations". Would
to "Previous Destinations". Would
you you like
like to
tostart
start navigation?
navigation? message
on the COMAND/Audio 20 display.
The route is saved.
X To start route guidance: selectYes
Yes.
An overview of the route is shown in the
display.
If you select No Nothe saved route can be
called up later in the navigation menu.
X Select Start Start.
Route guidance starts.
Downloaded and saved routes can be called
up again.
You can find further information in the sepa-
rate COMAND/Audio 20 operating instruc-
tions.
Speed alert You can define the upper speed limit, which
must not be exceeded by the vehicle.
If this selected speed is exceeded by the vehi-
cle, a message will be sent to the Customer
Assistance Center. The Customer Assistance Center then forwards this information to you.
You can select the way in which you receive
this information beforehand. Possible options include text message, e-mail or an automated
call. 260
FeaturesStowage and features 

Battery acid is caustic. Avoid con-
tact with skin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apron and face-
guard.
Rinse any acid spills immediately
with clear water. Contact a physi-
cian if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to prevent vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event of
an accident.
In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In this case, have the battery discon- nected at a qualified specialist workshop. You
can also charge the battery with a charger
recommended by Mercedes-Benz. Contact a
qualified specialist workshop for further infor- mation.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified spe-
cialist workshop if you wish to leave your
vehicle parked for a long period of time.
Only replace a battery with a battery that has been recommended by Mercedes-Benz. i
Remove the SmartKey if you park the
vehicle and do not require any electrical
consumers. The vehicle will then use very
little energy, thus conserving battery
power.
i After an interruption to the power supply,
e.g. due to a discharged battery, you must
reset the clock using Audio 20 or COMAND. You can find further information in the sep-
arate operating instructions. Charging the 12‑
volt battery G
WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery. G
WARNING
Battery acid is caustic. There is a risk of injury. Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over
the battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten- tion. G
WARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
! Only
charge the battery using the jump-
starting connection point. Batteries
287Roadside Assistance Z