
Display messagesPossible causes/consequences andMSolutions
Check TiresThe tire pressurein on eor mor etires has dropped significantly. The
whee lposition is shown in th emultifunction display.
A warning tone also sounds.
GWARNIN G
Tir epressures that are to olow pos eth efollowin ghazards :
Rthey may burst, especially as th eload and vehicl espeed increase.
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthedrivin gcharacteristics ,as well as steering and braking ,may be
greatl yimpaired.
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 162).
XCheckth etires and ,if necessary, follow th einstruction sfor aflat
tire (Ypage 327).
XChec kth etire pressur e (Ypage 349).
XIf necessary, correc tth etire pressure.
Warnin gTir eMal ‐functionThe tire pressur ein on eor mor etires has dropped suddenly. The whee l
position is shown in th emultifunction display.
GWARNIN G
Drivin gwit h a flat tire poses aris kof th efollowin ghazards :
Raflat tire affects th eabilit yto steer or brak eth evehicle.
Ryou could lose control of th evehicle.
Rcontinued drivin gwit h a flat tire will caus eexcessive heat build-up
and possibl y afire.
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 162).
XCheckth etires and ,if necessary, follow th einstruction sfor aflat
tire (Ypage 327).
TirePress.Monito rCurrently Unavaila‐ble
Becausethere is interferenc efrom astron gsource of radi owaves, no
signals from th etire pressur esensor sare detected. The tire pressur e
monitor is temporarily malfunctioning .
XDrive on.
The tire pressur emonitor restarts automatically as soo nas th e
problem has been resolved.
TirePress .Sen ‐sor(s) Missin gThere is no signal from th etire pressur esensor of on eor several
wheels. The pressur eof th eaffecte dtire is no tdisplayed in th emul-
tifunction display.
XHav eth efault ytire pressur esensor replace dat aqualified special -
ist workshop .
Display messages253
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
TirePressure Moni‐tor Inoperative NoWheel Sensor s
The wheels mounte ddo no thav e a suitable tire pressur esensor .The
tire pressur emonitor is deactivated.
XMoun twheels wit hsuitable tire pressur esensors.
The tire pressur emonitor is activated automatically after drivin gfor
a few minutes.
Tir ePress.Monito rInoperativeThe tire pressur emonitor is faulty.
XVisit aqualified specialist workshop .
Vehicle
Display messagesPossible causes/consequences and MSolutions
Shiftto'P'or'N'to Start EngineYou haveattempte dto start th eengin ewit hth etransmission in posi-
tion Ror D.
XShift th etransmission to position Por N.
Apply Brake toShift fro m'P'You hav eattempte dto mov eth etransmission selector lever to posi-
tion D,Ror Nwithout depressing th ebrak epedal .
XDepress th ebrak epedal .
ToDeselectPorN,Depres sBrake andStart Engine
Wit hth eengin eswitched off ,you hav eattempte dto shift th etrans -
mission out of position Por Nint oanother transmission position .
XDepress thebrak epedal .
XStart th eengine.
TransmissionNotinP Ris kof Vehicl eRollingAwa y
The driver's door is open or no tfull yclosed and th etransmission is in
position R,N or D.
A warning tone also sounds.
GWARNIN G
The vehicl emay rol laway.
There is aris kof an accident.
XShift th etransmission to position P.
XSecureth evehicl eagainst rollin gaway (Ypage 162).
XCloseth edriver's door completely.
Onl yShift to 'P'whe nVehicl eisSta‐tionar y
The vehicl eis moving .
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XShift th etransmission to position P.
254Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Â
Don't Forget YourKey
The SmartKey is notin th eignition lock. You hav eopened th edriver's
door wit hth eengin eswitched off . awarning tone sounds
This display message is displayed in th emultifunction display for a
maximum of 60 seconds and is simply areminder.
XTak eth eSmartKey wit hyou when you leav eth evehicle.
Â
Key Not Detected(whit edisplay message )
The SmartKey is currentl yundetected.
XChange th elocation of th eSmartKey in th evehicle.
If th eSmartKey still canno tbe detected:
XInser tth eSmartKey int oth eignition loc kand tur nit to th edesire d
position .
Â
Key Not Detected(reddisplay message )
The SmartKey is no tin th evehicle.
A warning tone also sounds.
If th eengin eis switched off ,you can no longer loc kth evehicl ecen-
trally or start th eengine.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 162).
XLocate th eSmartKey.
XPress aon thesteering whee lto confirm th edisplay message .
Becausethere is interferenc efrom astron gsource of radi owaves, th e
SmartKey is no tdetecte dwhils tth eengin eis running.
A warning tone also sounds.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 162).
XInsertth eSmartKey int oth eignition loc kand bring int oke ymode.
Â
Remove 'Start 'But ‐ton and Insert Key
The SmartKey is continually undetected.
The SmartKey detection function has atemporar ymalfunction or is
faulty. Awarning tone also sounds.
XInser tth eSmartKey int oth eignition loc kand tur nit to th edesire d
position .
XVisitaqualified specialist workshop .
Warning and indicat orlamps in the instrume nt cluster
General notes
Some systems carry out aself-diagnosis when th eignition is switched on .Therefore ,som eindicator
and warning lamp smay ligh tup or flas htemporarily. This behavio ris non-critical .These indicator
and warning lamp sonly indicat e amalfunction if they ligh tup or flas hafter starting th eengin eor
whils tdriving.
258Warning and indicator lamps in the instrument cluster
On-board computer and displays

Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
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 defective.
The coolant is too hot and the engine is no longer being cooled sufficiently.
XObserve the additional display messages in the multifunction display.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 162).
XLeave the vehicle and keep a safe distance from the vehicle until the engine has cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 316).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
XDo not start the engine again until the coolant temperature is below 257 ‡
(125 †). Otherwise, the engine could be damaged.
XDrive to the nearest qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
?N The red coolant warning lamp comes on while the engine is running. A warning
tone also sounds.
The coolant temperature has exceeded 255 ‡(124 †). The airflow 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.
XObserve the additional display messages in the multifunction display.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 162).
XLeave the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 316).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
Warning and indicator lamps in the instrument cluster265
On-board computer and displays
Z

:Adjusts temperature, airflow and air distri-
bution, left, as well as displaying the current
setting
;Calls up the climate control menu, displays
the current cooling and climate mode set-
ting
=Adjusts air distribution, airflow and temper-
ature on the right and displays the current
settings
There may be fewer settings or none depending
on your vehicle's equipment.
Calling up the climate control bar
Multimedia system:
XSelect Vehicle.
The vehicle menu is displayed.
XSlide 6the controller repeatedly until the
climate control bar is activated.
Calling up the climate control menu
Multimedia system:
XSelect Vehicle.
The vehicle menu is displayed.
XSlide 6the controller repeatedly until the
climate control bar is activated.
XTo select from climate control bar ;: turn
and press the controller.
The menu for selecting climate control func-
tions is activated.
XTo select a climate function: turn and press
the controller.
The selected climate control function
appears.
Settings in the climate menu
Adjusting the climate mode settings
The climate mode determines the type of air-
flow. When the air-conditioning system is set to
Ã, the setting is active (
Ypage 136).
XCall up the climate control menu
(Ypage 274).
XTo selectClimate Mode: turn and press the
controller.
XTo change sides: slide the controller left
8 or right 9
XTo change the setting: turn the controller.
XTo exit the menu:press the%button.
The climate mode bar displays the current air-
flow setting: DIFFUSE
,MEDIUMor FOCUS.
Starting/stopping the perfume atomizer
The perfume atomizer makes it possible to scent
the air in individual compartments in the vehicle
interior. Further information (
Ypage 141).
XCall up the climate control menu
(Ypage 274).
XTo selectAirFreshener: turn and press the
controller.
The setting element is active.
XTo start/stop the perfume atomizer: press
the controller.
XTo set the intensity: turn the controller when
the atomizer is switched on.
XTo exit the menu: press the%button.
Switching the ionization on/off
The ionization has a cleansing effect on the air in
the vehicle interior. Further information
(
Ypage 142).
XCall up the climate control menu
(Ypage 274).
XTo selectIonization: turn and press the
controller.
The setting element is active.
XTo switch the ionization on or off: turn the
controller.
XTo exit the menu: press the%button.
Activating or deactivating pre-entry cli-
mate control via the SmartKey
This function is only available for
PLUG‑IN HYBRID vehicles.
274Operating system
Multimedia system

Information on Roadside Assistance
(Ypage 28).
Downloading routes
Downloading routes allows you to transfer and
save predefined routes in the navigation sys-
tem.
A route can be prepared and sent by either a
customer service representative or under "Own-
ers Online" at http://www.mbusa.com.
Each route can include up to four way points.
Once a route has been received by the naviga-
tion system, you will see theDo
youwanttostart route guidance? DestinationReceived destination has been savedin "Previous destinations".message on
the multimedia system display.
The route is saved.
XTo start route guidance: selectYes.
An overview of the route is shown in the dis-
play.
If you select No
, the saved route can be called
up later in the navigation menu.
XSelect Start.
Route guidance starts.
Downloaded and saved routes can be called up
again.
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 vehicle,
a message will be sent to the Customer Assis-
tance 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.
The data you receive contains the following
information:
Rthe location where the speed limit was excee-
ded
Rthe time at which the speed limit was excee-
ded
Rthe selected speed limit which was exceeded
Geo fencing
Geo fencing allows you to select areas which the
vehicle should not enter or leave. You will be
informed if the vehicle crosses the boundaries
of the selected areas. You can select the way in
which you receive this information beforehand.
Possible options include text message, e-mail or an automated call.
The area can be determined as either a circle or
a polygon with a maximum of ten corners. You
can specify up to ten areas simultaneously. Dif-
ferent settings are possible for each area.
These settings can be called up under "Owners
Online" at http://www.mbusa.com.
Alternatively, you can trigger an Info call and
notify the customer service representative that
you wish to activate geo-fencing.
Currently inactive areas can be activated by text
message.
Triggering the vehicle alarm
With this function, you can trigger the vehicle's
panic alarm via text message. An alarm sounds
and the exterior lighting flashes. Depending on
the setting, the panic alarm lasts five or ten sec-onds. Afterwards, the alarm switches off.
Garage door opener
General notes
The HomeLink®garage door opener integrated
in the rear-view mirror allows you to operate up
to three different door and gate systems.
Use the integrated garage door opener only on
garage doors that:
Rhave safety stop and reverse features and
Rmeet current U.S. federal safety standards
Once programed, the integrated garage door
opener in the rear-view mirror will assume the
function of the garage door system's remote
control. Please also read the operating instruc-
tions for the garage door system.
When programming a garage door opener, park
the vehicle outside the garage. Do not run the
engine while programming.
Certain garage door drives are incompatible
with the integrated garage door opener. If you
have difficulty programing the integrated garage
Features307
Stowage and features
Z

Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
Hybrid vehicles: make sure that you read the
separate operating instructions. You could oth-
erwise fail to recognize dangers, e.g. due to high
voltage.
General notes
Depending on your driving style, the vehicle
consumes up to 0.9 US qt (0.8 l)of oil per
600 miles (1000 km). The oil consumption may be higher than this when the vehicle is new or if
you frequently drive at high engine speeds.
Depending on the engine, the oil dipstick may be
in a different location.
When checking the oil level:
Rpark the vehicle on a level surface
Rthe engine should be switched off for approx-
imately five minutes if the engine is at normal
operating temperature
Rif the engine is not at normal operating tem-
perature, e.g. if the engine was only started
briefly, wait about 30 minutes before carrying
out the measurement
Checking the oil level using the oil dip-
stick (except S 600 and Mercedes-AMG
S 65)
Example: checking the oil level using the oil
dipstick
XPull oil dipstick :out of the dipstick guide
tube.
XWipe off oil dipstick :.
XSlowly slide oil dipstick :into the guide tube
to the stop, and take it out again.
If the level is between MIN mark =and MAX
mark ;, the oil level is correct.
XIf the oil level has dropped to MIN mark =or
below, add 1.1 US qt (1.0 l)of engine oil.
Checking the oil level using the on-
board computer (S 600 and Mercedes-
AMG S 65)
Calling up the oil level check
XTurn the SmartKey to position 2in the ignition
lock (Ypage 145).
or
XOn vehicles with KEYLESS-GO, press the
Start/Stop button twice (Ypage 145).
XUse ò on the steering wheel to call up the
list of menus.
XPress the :or9 button on the steering
wheel to select the Servicemenu.
XConfirm by pressing aon the steering
wheel.
XUse : or9 to select the EngineOilLevelsubmenu.
XPressato confirm the selection.
The Measuring Engine Oil Level Accu‐
rate Only When Vehicle Is Levelmes-
sage appears in the multifunction display.
The measurement takes a few seconds. A mes-
sage appears in the multifunction display. The
messages are described in the following chap-
ter.
314Engine compartment
Maintenance and care

Oil level display messages in the multifunction display
Display messagesPossible causes/consequences andMSolutions
Engine Oil Level OKThe oil level is correct.
Check Engine OilLevel (Add 1 Liter)
The oil level is too low.
XAdd 1.1 US qt (1.0 liter) of engine oil.
Reduce Engine OilLevel
The engine oil level is too high.
XHave excess engine oil siphoned off.
For Engine OilLevelIgnitionMustBe On
The ignition is switched off.
XTurn the SmartKey to position2in the ignition lock (Ypage 145).
or
XOn vehicles with KEYLESS-GO, press the Start/Stop button twice
(Ypage 145).
Need More Time toCheck Engine OilLevel
The required waiting period was not observed.
XIf the engine is at normal operating temperature: repeat the meas-
urement after about five minutes.
If the engine is not at normal operating temperature, e.g. if the
engine was only started briefly: repeat the measurement after
approximately 30 minutes.
Engine Oil LevelNotMeasurablewithEngine Running
The engine is running; oil level measurement is not possible.
XSwitch off the engine.
XIf the engine is at normal operating temperature: wait about five
minutes before carrying out the measurement.
If the engine is not at normal operating temperature, e.g. if the
engine was only started briefly: wait approximately 30 minutes
before carrying out the measurement.
Adding engine oil
HEnvironmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful to
the environment.
!Use only engine oils and oil filters that are
approved for vehicles with a service system. A list of the engine oils and oil filters that have
been tested and approved in accordance with
Mercedes-Benz Specifications for Service
Products is available at any authorized
Mercedes-Benz Center. The following cause engine failure or damage
to the exhaust system:
RUse of engine oils and oil filters that have
not been expressly approved for the service
system
RReplacement of engine oil and oil filter after
the replacement interval specified by the
service system has expired
RUse of engine oil additives
!Do not add too much oil. adding too much
engine oil can result in damage to the engine
or to the catalytic converter. Have excess
engine oil siphoned off.
Engine compartment315
Maintenance and care
Z