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Tires
Display messagesPossible causes/consequences andPPSolutions
Check TireCheck Tire
Pressure SoonPressure Soon
The tire pressure loss warning system has detected a significant
loss in pressure.
A warning tone also sounds.
GWARNING
With tire pressures which are too low, there is a risk of the
following 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 188).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 387).
XCheck the tire pressures and, if necessary, correct the tire
pressure.
XRestart the tire pressure loss warning system when the tire
pressure is correct (Ypage 412).
Check TireCheck Tire
PressurePressure
Then Restart RunThen Restart Run
Flat IndicatorFlat Indicator
The tire pressure loss warning system generated a display
message and has not been restarted since.
XSet the correct tire pressure in all four tires.
XRestart the tire pressure loss warning system (Ypage 412).
Run Flat IndicatorRun Flat Indicator
InoperativeInoperative
The tire pressure loss warning system is faulty.
XVisit a qualified specialist workshop.
RectifyRectify
Tire PressureTire Pressure
The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
XCheck the tire pressures at the next opportunity (Ypage 412).
XIf necessary, correct the tire pressure.
XRestart the tire pressure monitor (Ypage 415).
318Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
CheckCheck
TiresTires
The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
GWARNING
With tire pressures which are too low, there is a risk of the
following 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 188).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 387).
XCheck the tire pressure (Ypage 412).
XIf necessary, correct the tire pressure.
WarningWarning
Tire MalfunctionTire Malfunction
The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
GWARNING
If you drive with a flat tire, there is a risk of the following hazards:
Ra flat tire affects the ability to steer or brake the vehicle.
Ryou could lose control of the vehicle.
Rcontinued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
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 188).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 387).
Displaymessages319
On-b oard computer and displays
Z

ProblemPossible causes/consequences andPPSolutions
%
The yellow ABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. Therefore, BAS, BAS PLUS, ESP®,
EBD (electronic brake force distribution), PRE-SAFE®,
PRE-SAFE®Brake, COLLISION PREVENTION ASSIST, the HOLD
function, hill start assist, crosswind driving assistance and ESP®
trailer stabilization, for example, are also deactivated.
ATTENTION ASSIST is deactivated.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
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
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is a risk of an accident.
XCarefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
328Warning and indicator lamps in the instrument cluster
On-board computer and displays

Tires
ProblemPossible causes/consequences andPPSolutions
w
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
following 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 188).
XObserve the additional display messages in the multifunction
display.
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 387).
XCheck the tire pressure (Ypage 412).
XIf necessary, correct the tire pressure.
w
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 cluster337
On-board computer and displays
Z

Roadside Assistance button
XPress Roadside Assistance buttonC.
This initiates a call to the Mercedes-Benz
Customer Assistance Center.
The indicator lamp in Roadside Assistance
buttonCflashes while the call is active.
The multifunction display shows the
Connecting CallConnecting Callmessage. The audio
output is muted.
If a connection can be made, theCallCall
ConnectedConnectedmessage 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
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 vehicle remote malfunction
diagnosis, the Mercedes-Benz Customer
Assistance Center can ascertain the nature of
the problem (Ypage 362).
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:
Rthe indicator lamp for Roadside
Assistance call buttonCis flashing
continuously.
Rno voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This can occur if the relevant mobile phone
network is not available, for example.
TheCall FailedCall Failedmessage appears in the
multifunction display.
XTo end a call:press thevbutton on the
multifunction steering wheel.
or
XPress the corresponding button for ending
a phone call on the audio system or on
COMAND.
MB Info call button
XPress MB Info call buttonC.
This initiates a call to the Mercedes-Benz
Customer Assistance Center.
The indicator lamp in MB Info call
buttonCflashes while the connection is
being made. The multifunction display
358Features
Stowage and features

shows theConnecting CallConnecting Callmessage.
The audio system is muted.
If a connection can be made, theCallCall
ConnectedConnectedmessage 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
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
products 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:
Rthe indicator lamp in MB Info call
buttonCis flashing continuously.
Rno voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This can occur if the relevant mobile phone
network is not available, for example.
TheCall FailedCall Failedmessage appears in the
multifunction display.
XTo end a call:press thevbutton on the
multifunction steering wheel.
or
XPress 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
emergency 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:
Rthevbutton on the multifunction
steering wheel
Rthe corresponding button on the audio
system or on COMAND for ending a
telephone call
iWhen a call is initiated, the audio system
is muted. The mobile phone is no longer
connected to COMAND. However, if you
want to use your mobile phone, do so only
when the vehicle is stationary and in a safe
location.
Downloading destinations in COMAND
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)/
important destinations in the vicinity.
Furthermore, you can download routes with
up to 20 way points.
Features359
Stowage and features
Z

You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
iThe ASSYST PLUS service interval display
does not show any information on the
engine oil level. Observe the notes on the
engine oil level (Ypage 371).
The multifunction display shows a service
message for several seconds, e.g.:
RService A in .. DaysService A in .. Days
RService A DueService A Due
RService A Exceeded by .. DaysService A Exceeded by .. Days
Depending on the operating conditions of the
vehicle, the remaining time or distance until
the next service due date is displayed.
The letterAAorBB, possibly in connection with
a number or another letter, shows the type of
service.AAstands for a minor service andBBfor
a major service.
You can obtain further information from an
authorized Mercedes-Benz Center.
The ASSYST PLUS service interval display
does not take into account any periods of
time during which the battery is
disconnected.
Maintaining the time-dependent service
schedule:
XNote down the service due date displayed
in the multifunction display before
disconnecting the battery.
or
XAfter reconnecting the battery, subtract
the battery disconnection periods from the
service date shown on the display.
Hiding a service message
XPress the8orvbutton on the
steering wheel.
Displaying service messages
XSwitch on the ignition.
XPress theYorebutton on the
steering wheel to select theServ.Serv.menu.
XPress thecordbutton to select the
ASSYST PLUSASSYST PLUSsubmenu and confirm by
pressing thevbutton.
The service due date appears in the
multifunction display.
Information about Service
Resetting the ASSYST PLUS service
interval display
!If the ASSYST PLUS service interval
display has been inadvertently reset, this
setting can be corrected at a qualified
specialist workshop.
Have service work carried out as described
in the Maintenance Booklet. This may
otherwise lead to increased wear and
damage to the major assemblies or the
vehicle.
A qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center, will reset
the ASSYST PLUS service interval display
after the service work has been carried out.
You can also obtain further information on
maintenance work, for example.
Special service requirements
The specified maintenance interval takes only
the normal operation of the vehicle into
account. Under arduous operating conditions
or increased load on the vehicle,
maintenance work must be carried out more
frequently, for example:
Rregular city driving with frequent
intermediate stops
Rif the vehicle is primarily used to travel
short distances
ASSYST PLUS375
Maintenance and care
Z

camera lens is dirty, visit a qualified
specialist workshop.
XFold down the camera cover by recessC.
XUse a soft cloth to clean the windshield in
front of cameraD.
Cleaning the plastic trim
GWARNING
Care products and cleaning agents containing
solvents cause surfaces in the cockpit to
become porous. As a result, plastic parts may
come loose in the event of air bag
deployment. There is a risk of injury.
Do not use any care products and cleaning
agents to clean the cockpit.
!Do not affix the following to plastic
surfaces:
Rstickers
Rfilms
Rscented oil bottles or similar items
You can otherwise damage the plastic.
!Do not allow cosmetics, insect repellent
or sunscreen to come into contact with the
plastic trim. This maintains the high-quality
look of the surfaces.
XWipe the plastic trim with a damp, lint-free
cloth, e.g. a microfiber cloth.
XHeavy soiling:use care and cleaning
products recommended and approved by
Mercedes-Benz.
The surface may change color temporarily.
Wait until the surface is dry again.
Cleaning the steering wheel and gear or
selector lever
XThoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-
Benz.
Cleaning genuine wood and trim
elements
!Do not use solvent-based cleaning agents
such as tar remover, wheel cleaners,
polishes or waxes. There is otherwise a risk
of damaging the surface.
!Do not use chrome polish on trim pieces.
The trim pieces have a chrome look but are
mostly made of anodized aluminum and
can lose their shine if chrome polish is
used. Use a damp, lint-free cloth instead
when cleaning the trim pieces.
If the chrome-plated trim pieces are very
dirty, you can use a chrome polish. If you
are unsure as to whether the trim pieces
are chrome-plated or not, consult an
authorized Mercedes-Benz Center.
XWipe the wooden trim and trim pieces with
a damp, lint-free cloth, e.g. a microfiber
cloth.
XHeavy soiling:use car care and cleaning
products recommended and approved by
Mercedes-Benz.
382Care
Maintenance and care

If the pressure loss warning message
appears in the multifunction display:
RObserve the instructions in the display
messages (Ypage 318).
RCheck the tire for damage.
RIf driving on, observe the following notes.
The maximum driving distance is
approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden.
In addition to the vehicle load, the driving
distance possible depends upon:
RSpeed
RRoad condition
ROutside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving
conditions/maneuvers, or it can be increased
through a moderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceed a maximum speed of
50 mph (80 km/h).
iWhen replacing one or all tires, make sure
that you use only tires:
Rof the size specified for the vehicle and
Rmarked "MOExtended"
If a tire has gone flat and cannot be
replaced with a MOExtended tire, a
standard tire may be used as a temporary
measure. Make sure that you use the
proper size and type (summer or winter
tire).
iVehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
A TIREFIT kit may be obtained from a
qualified specialist workshop.
Important safety notes
GWARNING
When driving in emergency mode, the driving
characteristics deteriorate, e.g. when
cornering, accelerating quickly and when
braking. There is a risk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and driving maneuvers,
and driving over obstacles (curbs, potholes,
off-road). This applies in particular to a laden
vehicle.
Stop driving in emergency mode if:
Ryou hear banging noises.
Rthe vehicle starts to shake.
Ryou see smoke and smell rubber.
RESP®is intervening constantly.
Rthere are tears in the sidewalls of the tire.
After driving in emergency mode, have the
wheel rims checked at a qualified specialist
workshop with regard to their further use. The
defective tire must be replaced in every case.
TIREFIT kit
Important safety notes
TIREFIT is a tire sealant.
You can use TIREFIT to seal punctures of up
to 0.16 in (4 mm), particularly those in the tire
tread. You can use TIREFIT at outside
temperatures down to

GWARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This can
lead to function restrictions applying to
safety-relevant systems, e.g. the lighting
system, ABS (anti-lock braking system) or
ESP®(Electronic Stability Program). The
operating safety of your vehicle may be
restricted. You could lose control of the
vehicle, for example:
Rbraking
Rin the event of abrupt steering maneuver
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar
incident, contact a qualified specialist
workshop immediately. Do not drive any
further. You should have all work involving the
battery carried out at a qualified specialist
workshop.
GWARNING
Electrostatic build-up can lead to the creation
of sparks, which could ignite the highly
explosive gases of a battery. There is a risk of
an explosion.
Before handling the battery, touch the vehicle
body to remove any existing electrostatic
build-up.
The highly flammable gas mixture forms when
charging the battery as well as when jump-
starting.
Always make sure that neither you nor the
battery is electrostatically charged. A build-
up of electrostatic charge can be caused, for
example:
Rby wearing clothing made from synthetic
fibers
Rdue to friction between clothing and seats
Rif you push or pull the battery across the
carpet or other synthetic materials
Rif you wipe the battery with a cloth
GWARNING
During the charging process, a battery
produces hydrogen gas. If a short circuit
occurs or sparks are created, the hydrogen
gas can ignite. There is a risk of an explosion.
RMake sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
RNever place metal objects or tools on a
battery.
RIt is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
RWhen jump-starting, make sure that the
battery poles with identical polarity are
connected.
RIt is particularly important to observe the
described order when connecting and
disconnecting the jumper cables.
RNever connect or disconnect the battery
terminals while the engine is running.
GWARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash battery acid immediately with
water and seek medical attention.
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified
specialist workshop or a
392Battery (vehicle)
Breakdown assistance