2011 MERCEDES-BENZ M-CLASS SUV battery

The following system
sare switche doff when
th er adar senso rsystem is deactivated:
R DISTRONIC PLUS (Y page 174)
R BAS PLUS (Y page 62)
R PRE-SAFE ®
Brake (Y page 66)
R Blind Spot Assist (Y page 208)
R Active Blind Spot Assist (Y page 212)
X Press the =or; button on the steer-
ing whee ltoselect the Settings menu.
X Press the :or9 button to select the
Vehicle submenu.
X Press the abutton to confirm.
X Press the 9or: button to select
Rada rsensor (See Owner's Man.): .
Yo uw ill see the selected setting: on or
off .
X Press the abutton to save the setting.
Heating menu Auxiliary heating depa
rtur et ime
This function is only availa bleo nvehicles with
auxiliar yheatin g(Ypage 130).
In the Heating submenu, you can select a
stored departure tim eorchange adeparture
time.
The auxiliar yheatin gtimer func tion calcu-
lates the switch-on tim eaccording to the out-
sid etemperature so that the vehicle is pre-
heated by the departure time. When the
departure tim eisreached, the auxiliar yheat-
ing continues to heat for afurther five
minutes and then switches off. The auxiliary
heating adopts the THERMATI Cor
THERMOTRONI Ctemperature setting.
You can switc hoff th eauxiliary heating by
using the remote control or the auxiliary heat-
ing button on the centre console. G
WARNING
Exhaust fumes are produced when the auxili-
ary heating is in operation. Inhaling these
exhaust fumes can be poisonous. You should
therefore switch off the auxiliary heating in confined spaces without an extraction sys-
tem, e.g.
agarage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set
the vehicle alight. Choos eyour parkin gspot
accordingly.
Operating the auxiliary heating is thus pro-
hibited at fillin gstations or when your vehicle
is being refuelled .You must therefore switch
off the auxiliar yheatin gatf illing stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for alonger
distan ce.
i Switch the auxiliary heating on regularly
once amonthfor about 10 minutes.
Selecting th edepartur etime or deactivat-
ing aselected depa rtur et ime
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press the abutton to confirm.
You will see the selected setting.
X Press the abutton to confirm.
X Press the :or9 button to select
one of the three departur etimes or Timer off (no timer active).
X Press the abutton to confirm.
When adeparture tim eisselected, the yel-
low indicator lam plights up on the auxiliary
heating button. 250
Menus and submenusOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
The yellow
!warning lamp lights up. The red !indicator
lamp flashes fo rabout 10 seconds after the electric parkin gbrake
ha sb een applied or released. It then goes out or remains lit.
The electric parkin gbrake is malfunctioning.
X Switch off th eignition and tur nitback on.
X Apply the electric parkin gbrake.
If it is not poss ible to apply the electric parkin gbrake:
X Shift th etransmission to P.
X Vis itaq uali fieds pecialist workshop.
If it is not possible to release the electric parkin gbrake:
X Releas ethe elec tricp arkin gbrake automaticall y(Ypage 16 1).
If th eelectric parkin gbrake can stil lnot be released:
X Consult aqualified specialist workshop. The yellow
!warning lamp lights up. If you manually apply or
release the electric parkin gbrake ,the red !indicator lamp
fla shes.
The electric parking brak eismalfunctioning. It is not poss ible to
apply the electric parking brake manu ally.
X Shift the transmission to P.
X Visit aquali fieds pecialist workshop. !
Pk
gb rake inopera‐ tive Th
ey ellow !warning lam plights up. The red !indicator
lamp flashes for about 10 seconds after the electric parkin gbrake
ha sb een applied or released. It then goes out or remains lit.
The electric parkin gbrake is malfunctioning ,e.g. because of over-
voltag eorundervoltage.
X Remove the cause for the overvoltage or undervoltage ,e.g. by
charging the battery or restarting the engine.
X Appl yorr elease the electric parkin gbrake.
If it remains impossibl etoapply or release the electric parking
brake:
X Swit choff the ignition and tur nitback on.
X Apply or release the electric parkin gbrake.
If th eelectric parkin gbrake can stil lnot be released:
X Consult aqualified specialist workshop. 258
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
# The battery is no
tbeing charged.
Aw arning ton ealso sounds.
Possible causes:
R fault yalternator
R torn poly-V-belt
R am alfunction in th eelectronics
X Stop th evehicle immediately, payin gattentio ntoroad and traf-
fic conditions, and switc hoff th eengine.
X Ope nthe bonnet.
X Chec kwhether the poly-V-belt is tor n.
If the poly-V -belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult aqualified specialist workshop.
If the poly-V-belt is OK:
X Visit aqualified specialist workshop. 4
Chec
keng. oil lev. when next
refuelling Th
eo il level has dropped to the minimum level.
Aw arning ton ealso sounds.
X Chec kthe oil level, at the latest when nex trefuelling
(Y page 320).
X If necessary, top up the engine oil (Y page 320).
X Hav ethe engin echecked at aqualified specialist worksho pif
the engine oil needs topping up more often than usual. 8
Reserv
efuel level Th
ef uel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated when the fuel level
drops into the reserve range.
X Refuel at the nearest filling station. C There is only
avery small amount of fuel in the fuel tank.
The auxiliary heatin gcannot be operated.
X Refuel at the nearest filling station without fail. ¸
Replace
air cleaner Vehicles with
adiesel engine: the engine air filter is dirty and must
be replaced.
X Visit aqualified specialist workshop. Display messages
267On-boardcomputer and displays Z

Vehicle
Display messages Possible caus
es/consequences and M Solutions
To start engine,
shift to either P
or N Yo
uh avea ttempte dtostart the engine with the transmission in
position Ror D.
X Shift the transmission to position Por N. Auxiliary battery
malfunction The auxiliary battery for the automatic transmission is no longer
being charged.
X Visit aquali fied sp ecialist worksho patthe nex toppor tunity.
X Until then, set the automatic transmission to position Pbefore
yo us witch off the engine.
X Before leaving the vehicle, appl ythe electr ic parking bra ke. Apply brake to
deselect Par
k(P) position Yo
uh ave attempted to mov ethe transmission selector lever to
position D,Ror Nwithout depressing the brake pedal.
X Depress the brake pedal. Vehicle
no
tinp osition P Th
ed river's door is open and th etransmission is in position R,N
or D.
Aw arning ton ealso sounds.
X Shift th etransmissio ntoposition P.
X Apply th eelectric parking brake. Wi
thoutc hanging gear,
consul
tworkshop Yo
uc annot change the transmission position due to amalfunction.
Aw arning ton ealso sounds.
If transmission position Dis selected:
X Drive to aqualified specialist workshop without shiftin gthe
transmissio nfromp osition D.
If transmission position R,Nor Pis selected:
X Consult aqualified specialist workshop. On
ly select Park (P)
whe
nv ehicl eis stationary Th
ev ehicle is moving.
X Pull ove rand sto pthe vehicle safel yassoonasp ossible, paying
attention to roa dand traffic conditions.
X Shift the transmissio ntoposition P. A The tailgate is open.
X Close the tailgate. 280
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
? G
Risk of acc
ident
The bonne tisopen. Awarning ton ealso sounds.
X Pull ove rand sto pthe vehicle safel yassoonasp ossible, paying
attention to roa dand traffic conditions.
X Appl ythe electric parkin gbrake.
X Close th ebonnet. Active bonnet mal‐
function Se
eOwn‐ er's Manual Th
ea ctive bonnet (pedestrian protection) is not active due to a
malfunction or because it has already bee ntriggered
(Y page 318).
X Visit aqualified special istworkshop. C At least one door is open.
Awarning ton ealso sounds.
X Close all doors. D
Po
wer steering mal‐
function See Own‐
er'
sM anual G
Risk of accident
Th ep ower steering assistance is faulty.
You will nee dtouse mor eforce to steer.
Aw arning ton ealso sounds.
X Chec kwhether you ar eable to apply the extr aforc erequired.
X If you are able to steer safely: carefully driveontoaqualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop. &
inoperativ eBat‐ tery low Yo
uh ave attempted to switch on the auxiliary heating or to acti-
vate adeparture tim eusing the on-boar dcomputer after operating
the auxiliary heatin gtwice.
X Let the engine run for 10 seconds.
The auxiliary heating is operational again. The on-board voltage is too low. The auxiliary heating has switched
itself off or cannot be switched on (Y
page 130).
X Driv efor alonger distance.
The battery is being charged. The auxiliary heatin gisoperational
again as soon as the on-boar delectrical system voltage is suf-
ficient. &
inoperative
Refuel
vehicle The fuel level in the fuel tank is too low. The auxiliary heating can-
not be switched on (Y page 130).
X Refuel at the nearest filling station. Display messages
281On-boardcomputer and displays Z

If yo
uuse the sockets for long periods when
the engine is switched off ,the battery may
discharge.
X Tur nthe key to positi on1in the ignition
lock.
i An emergenc ycut-off ensures that the on-
board voltage does not drop too low. If the
on-board voltage is too low, the powe rto
the sockets is automaticall ycut. This
ensure sthat there is sufficien tpower to
star tthe engine.
Socket in th efront centre console !
The socke tisn ot intended for operating
the tyr einflation compresso r.X
To open: slide cover :to its foremost
position.
X Lift up the cover of socket ;.
X To clos e:pull cover :back as far as it will
go.
Socket in the rear-compartment centre
console X
Lift up the cover of socket :.
On vehicles with the Rear Seat Entertainment
System, there are two sockets in the rear-
compartment centre console.
Socket in the luggage compartment X
Lift up the cover of socket :. Mobile phone
Important notes G
WARNING
Observe the legal requirements of the country
in which you are currently driving regarding
operating mobile communications equipment
in av ehicle.
If it is permitted by law to operat ecommuni-
cations equipment while the vehicle is in
motion ,you must only do so if the traffic sit-
uation permits. Otherwise, you coul dbedis-
trac tedf rom th etraffic conditions ,cause an
accident and injure yourself and others.
Two-way radios and fax equipment used with-
out low-reflection exterior aerials can inter-
fere with the vehicle's electronics and thereby
jeopardise the operating safety of the vehicle
and your safety. Therefore, you must only use
this equipment if it is correctly connected to
as eparate reflection-f reee xterior aerial. G
WARNING
Excessive level sofelectromagnetic radiation
may cause damage to your health and the 310
FeaturesStowing and features

You can identify service products approved
by Mercedes-Ben
zbythe followin ginscrip-
tions on the container:
R MB-Freigabe (e.g .MB-Freigabe 371.0)
R MB-Approval (e.g .MB-Approval 371.0)
Other labels and recommendation sthat
make reference to quality level or aspeci-
fication accordin gtoanMBSheet no. (e.g.
MB 371.0) ar enot necessarily approved by
Mercedes-Benz.
You can obtain further information from
any Mercedes-Benz Servic eCentre. G
WARNING
Windscreen washer fluid is highly flammable.
Fire, naked flames and smoki ngare prohibi-
ted when handling washer fluid concentrate.
! Only use washe rfluid concentrate which
is suitable for plastic lamp lenses. Unsuit-
able washer fluid concentrate could dam-
age the plastic lamp lenses of the head-
lamps.
! Do not use distilled or de-ionised water in
the washer fluid reservoir. Otherwise, the
level sensor may be damaged.
i Add windscreen washer concentrate, e.g.
MB SummerFit, to the washer fluid all year
round. Example: washer fluid reservoir
X Mix the windscreen washer fluid in acon-
tainer beforehand.
X At tem peratures above freezing: fill the
washer fluid reservoir with amix of water and windscreen washer concentrate (e.g.
MB SummerFit).
X At temperatures below freezing: fill the
washer fluid reservoir with amix of water
and windsc reen washer concentrate (e.g.
MB WinterFit). Adapt the mixing ratio to the
outside temperatures.
X To open: pull cap:upwards by the tab.
X Top up with the premixed washer fluid.
X To close: press cap :ontothe filler neck
until it engages. Maintenance
ASSYST PLUS service interval display
Service messages Informa
tion on the type of service and service
intervals (see separat eServic eBooklet).
You can obtain further information fr om a
Mercedes-Ben zServic eCentre.
The ASSYS TPLUS service interva ldisplay
inform syou when the nex tservice is due.
The multifunction display shows aservice
message for afew seconds, e.g.:
Next servic eAdue in .. days Service
Adue Service
Aoverdue by ... days Th
eletter indicates which servic eisdue.A stands for
aminor servic eand B for
am ajor
service. Anumber or another letter may be
displayed after the letter. This figure indicates
any necessary additional maintenanc ework
to be performed.
If you repor tthis displayed information to a
qualified specialist workshop, for example a
Mercedes-Ben zService Cent re,they can
infor myou of the cost sthe service will incur.
The AS SYST PLUS service interval display
doe snot tak einto account any periods of
time during which the battery is disconnec-
ted. 322
MaintenanceMaintenance and care

Maintainin
gthe time-dependen tservice
schedule:
X Not edown the service due date displayed
in the multifunc tion display befor ediscon-
necting the battery.
or
X Subtract the battery disconnection periods
from the servic edate shown on the displ ay
after reconnecting the battery.
i The ASSYST PLUS service interval displ ay
does not show any information on the
engine oil level .Observ ethe notes on the
engin eoil level (Y page 320).
Hiding aservice message X
Pres sthe % ora button on th esteer-
ing wheel.
Displaying service messages X
Switch th eignitio non.
X Press =or; on the steering wheel
to select the Serv. menu.
X Press 9or: to select the ASSYST PLUS submenu and press
ato confirm.
The service du edatea ppears in the multi-
function display.
Points to remember Resettin
gthe ASSYS TPLUS service inter-
val display
Aq ualified specialist workshop, e.g. a
Mercedes -Ben zS ervice Cent re,w ill reset the
ASSYST PLU Sservic einterval display after
the service work has bee ncarried out.
You can obtain further information ,e.g.
regarding servic ework,from aMercedes-
Benz Ser vice Centre or directly from
Mercedes-Benz.
! If the ASSYST PLUS servic einterval dis-
play has bee ninadvertently reset, this set-
ting can be corrected at aMercedes-Benz
Ser vice Centre. Have servic
ework carried out as described
in the Ser vice Boo klet. This may otherwise
lead to inc reased wear and damage to the
major assemblies or the vehicle.
Driving abroad
An extensive Mercedes -Ben zS ervice network
is also available in other coun tries. The
Service Hotline's curren ttelephone numbers
for use when you are abroa dare to be found
in th e"Mercedes-Ben zService24h" section
of the Ser vice Boo klet. AdBlue
®
service indicator
i For BlueTE Cvehicles only.
The BlueTE Cexhaus tgas aftertreatment
must be operated with the reducing agent
AdBlue ®
in order for it to function correctly.
Under normal operating conditions, afull tank
of AdBlue ®
should last until the nex tservice
due date.
Depending on how and where the vehicle is
used, there may be an inc rease in the
AdBlue ®
consumption, resulting in the next
servic edue date being brought forward.
Certain display messages sho wthat
AdBlue ®
must be topped up, e.g.
Refill AdBlue at worksh opSee Owner’s Manual
Refill AdBlue at worksho
pNostart in .. km
Aw
arning signal also sounds.
You can no longer star tthe engin ewhen the
AdBlue ®
supply has been used up
(Y page 268).
Top up AdBlue ®
(Y page 157).
Before taking atripw ithy our vehicle outside
Europe, have th eAdBlue ®
suppl ychec kedat
aq ualified specialist workshop. If necessary,
have the AdBlue ®
topped up. Before using
your vehicle for an extended period in coun-
tries outside Europe, con tact aq ualified spe-
cialist workshop.
Obser vethe note sonAdBlue®
(Y page 374). Maintenance
323Maintenanceand care Z