2011 MERCEDES-BENZ M-CLASS SUV Owners Manual

and transpor
tthe wheel in the luggage
compartment.
or
X Depending on the size of the wheel, you
ma yalso be able to secure the faulty wheel
in the emergenc yspare wheel well. In this
case, you must remove the stowage tray
from the emergency spare wheel well and
store it securely in the luggage compart-
ment.
i When you are driving with the collapsible
emergency spare wheel fitted, the tyre
pressur eloss warnin gsystem or the tyre
pressure monitor cannot function reliably.
Only restart the tyre pressure los swarning
system/tyre pressure monitor when the
defective wheel has been replaced with a
new wheel.
Vehicles with tyre pressure monitor: all fit-
ted wheels must be equipped with func-
tioning sensors. The defective wheel
should no longer be in the vehicle. MOExtended tyres (tyres with run-flat
characteristics)
MOExtended tyres (tyres with run-flat char-
acteristics) allow you to continue driving the
vehicle even when one or more tyres lose all
air pressure.
MOExtended tyres may only be used in con-
junction with the activated tyre pressure loss
warning system or with the tyre pressure
monitor.
The maximum permissible distance which
can be driven in run-flat mode depends on the
load in the vehicle. It is 80 km if the vehicle
is partially laden and 30 km if fully laden.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tyre pressure loss warning
appears in the multifunction displ ay.
Yo um ust not exceed amaximum spee dof
80 km/h. G
WARNING
Th eh andling characteristics of your vehicle
deteriorate in run-flat mode, for example:
R when cornering
R when braking
R when accelerating rapidly
Adapt your driving style accordingly and avoid
sudden changes in direction and sudden
acceleration, as well as driving over obstacles
(i.e. kerbs, potholes), and driving off-road.
This is particularly the case when the vehicle
is heavily laden.
The maximum permissible distance that can
be driven in run-flat mode depends to alarge
exten tonthe loads placed on the vehicle. It
can be shorter due to high speeds, aheavy
load, sudden changes in direction, the road
surface condition, outside temperature, etc.,
or further if you driv ecarefully and conserva-
tively.
Do not continue to drive in run-flat mode if:
R you hear banging noises.
R the vehicle starts to shake.
R you see smoke and smell rubber.
R ESP ®
is intervening constantly.
R there are tears in the sidewalls of the tyre.
After driving in run-flat mode, you must have
the wheel(s) checked for damage at aquali-
fied specialist workshop which has the nec-
essary specialist knowledg eand tool stocarry
out the work required. The faulty tyre must be
replaced in every case.
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centr efor this pur-
pose. In particular ,work relevant to safet yor
on safety-related system smust be carried out
at aq ualified specialist workshop.
i Whe nreplacing one or all tyres, make
sure that you only use tyres marked
MOExtended and of the specified size for
the vehicle.
i Vehicles with MOExtended tyres are not
equipped with aTIREFIT kit at th efactory. 342
Flat tyreBreakdown assistance

It is therefore recommende
dthat you addi-
tionally equip your vehicle with aTIREFIT kit
if yo ufit tyres that do not featur erun-flat
properties, e.g. winter tyres. ATIREFIT kit
can be obtaine dfrom aMercedes-Benz
Ser vice Centre. Battery
Important safety notes
In orde rfor the batter ytoachieve the maxi-
mum possibl eservic elife, it must always be
sufficiently charged.
Hav ethe batter ycharge checked mor efre-
quently if yo uuse the vehicle mainl yfor short
trips or if you leav eitstanding idle for a
lengthy period.
Only replace abatter ywithabatter ythat has
been recommended by Mercedes-Benz.
Consult aMercedes-Benz Ser vice Centre if
you wis htoleave your vehicle parked up for
al ong period of time. G
WARNING
Comply with safety precaution sand take pro-
tective measure swhen handling batteries. Risk of explosion
Fire, naked flames and
smoking ar eprohibited
when handling th ebattery.
Avoid creating sparks. Battery acid is caustic.
Avoid contact with the skin,
eyes or clothing.
Wear suitable protective
clothing, in particular
gloves, an apron and aface
mask.
Immediately rinse acid
splashes off with clean
water. Consult adoctor if
necessary. Wear eye protection.
Keep children away.
Observ
ethis Owner's Man-
ual. H
Environmental note Bat
terie sc ontain pollutants.
It is against the law to dis-
pose of them with the house-
hold rubbish. They must be
collec teds eparately and
recycled in an environmen-
tally responsible man ner. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to aqualified spe-
cialist workshop, e.g. a
Mercedes -Benz Ser vice
Centre, or to aspecial col-
lection point for old batter-
ies. G
WAR
NING
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
bee ntested and approved for your vehicle by
Mercedes-Benz .These batteries provide
increased impact protection to prevent vehi-
cle occupants from suffering aci dburns
should the battery be damaged in the event
of an accident.
To prevent acid burns, observe the following
safety notes when handling batteries:
R do not lean over the battery.
R do not place any metal objects on abattery.
Otherwise ,you coul dcause ashort circuit
and the battery's gas mixtur ecould ignite. Battery
343Breakdownassistance
Z

R
make sure that yo udonot create an elec-
trostati ccharge, e.g. by wearing synthetic
clothing or as aresul toff riction on fabrics.
Therefore, you should not pul lorslide the
battery over carpets or other synthetic
materials.
R never touc hthe battery fir st. To discharge
ap ossible electrostatic charge, ste pout of
the vehicle firs tand touch the bodywork.
R do not wipe the battery using acloth. The
battery may explode as aresul tofe lectro-
static charge or due to flying sparks.
! Switch off the engin eand remove the key
befo redisconnecting the terminal clamps
from the battery. On vehicles with KEY-
LESS-GO, mak esure that the ignition is
switched off .Check that all the indicator
lamps in the instrumen tcluster are off .You
ma yotherwis edestroy electronic compo-
nents, such as the alternator.
i When you park the vehicle, remove the
key if you do not require any electrical con-
sumers. The vehicle will then use ver ylittle
energy, thus conserving battery power.
Mercedes-Benz recom mends that you do not
carry out work on batteries yourself, e.g.
removing or charging. Have this work per-
formed at aqualified specialist workshop, e.g.
aM ercedes-Benz Servic eCentre. Installation location of the battery
Your vehicle is equipped with abattery in the
vehicle interior. It is located under the front
seat on the right-hand side of the vehicle
when viewed in the direction of travel.
X Apply the electric parking brake and shift
the transmission to position P.
X Position the right-hand front seat as far for-
wards as possible.
X Switch off all electrical consumer s(e.g.
radio, blower, etc.).
X Turn the key to position 0(Y page 139) in
the ignition lock and remove it. On vehicles with KEYLESS-GO, mak
esure the ignition
is switched off (Y page 139). All indicator
lamps in the instrument cluster must be off. X
Get into the rear compartment.
X Remove cap :under the right-hand front
seat. X
Use ashar pknifeonc arpet;to cut along
the dashe dwhite line until you reach the
perforated part.
X Position the right-hand front seat at its rear-
most position. 344
Ba
tteryBreakdown assistance

X
Fold the piece of cut carpet ;in the direc-
tio noft he arrow.
X Adjust the right-hand front seat to its high-
est position.
X Position the right-hand front seat as far for-
wards as possible. Vehicle with THERMATIC automatic climate con-
trol
Removing the rear footwell outlet
(THERMATIC)
X Pull the head of expanding alignment
rivet ?up.
X Pull complete expanding alignment
rivet ?up and remove it.
X Pull rear footwell outlet =from the air duct
in the direction of the arrow and remove it. Vehicle with THERMOTRONIC automatic climate
control
Removing the air deflector
(THERMOTRONIC)
X
To disconnect the cable from air deflector
=,p ull the plug out of the socket.
X Pull the cable together with retaining
clip ?out of the battery cover.
X Slide air deflector =to the left towards the
centre of the vehicle. The right-hand air
deflector nozzle is no longer connected to
the air duct.
X Lift air deflector =up to the right.
X Pull air deflector =to the right in the direc-
tion of the arrow until the left-hand nozzle
is disconnected from the air duct.
X Remove air deflector =. X
Lift battery cover Aand remove it from
battery B. Battery
345Breakdown assistanc e Z

Disconnecting th
ebattery
! Always disconnect the battery in
the order described below. Never swap the
terminal clamps. You ma yotherwis edam-
age the vehicle electronics.
In vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery. The vehicle
is secured against rolling away .You can
then no longer mov ethe vehicle. :
Positive termi nal
; Battery
= Negative terminal
X Loosen the negative terminal clamp on the
battery and remove it.
X Remove the cover from the positive termi-
nal clamp.
X Loosen the positive terminal clamp on the
battery and remove it. Removing/fitting the battery
X To remove: disconnect the battery
(Y pag e346). X
Remove breather hose :.
X Loose nbolts ;on bracket =,which holds
the battery in place.
i For this, you will need a13mmsocket
wrenc hwith an extension that is at least
30 cm long. This tool is not included in the
vehicle tool kit.
X Remove bracket =. X
Lif tb attery ?at the side until the lower
edge is free.
X Pull out battery ?in the direction of the
arrow.
X To fit: follow the steps described in "To
remove" in reverse order. Reconnecting the battery
! Always connect the battery in the order
described below. Never swap the terminal
clamps. You may otherwise damage the
vehicle electronics. 346
BatteryBreakdown assistance

X
Switch off al lelec trical consumers (e.g.
radio ,blow er, etc.).
X Connec tthe positive terminal clamp and
secure the cov er.
X Connect the negative terminal clamp.
i If the power supply ha sbeeninterrupted,
e.g. if yo ureconnect the battery, you will
have to:
R set the clock; see the separate operat ing
instructions.
R rese tthe function for automatically fold-
ing the exterior mirror sin/out by foldi ng
the mirrors out onc e(Ypage 10 1). Charging th
ebattery G
WARNING
Onl ycharge the battery in awell-ventilated
area .Ast he battery is being charged, gases
can escap eand generat eminor explosions.
This could injure you and other person sor
caus edamage to the paintwork or acid cor-
rosion on the vehicle.
You can obtain information about battery
chargers which allow the batter ytobe
charged while still installed from aqualified
specialist workshop ,e.g. aM ercedes-Benz
Ser vice Centre. G
WARNING
There is arisk of acid burns during the charg-
ing process due to the gases which escape
from the battery. Do not lean over the battery
during the chargin gprocess. G
WARNING
Battery aci discaustic. Avoid contact with the
skin, eyes or clothing.
! Only charge the installed batter ywith a
batter ycharger whic hhas been tested and
approved by Mercedes -Benz .These battery
chargers allow the battery to be charged
while still installed. !
Only use battery chargers with amaxi-
mum charging voltage of 14.8 V.
! Only charge the battery using the jump-
start connection point.
The jump-starting connection point is in the
engine compartmen t(Ypage 348).
X Open the bonnet (Y page 318).
X Connec tthe battery charger to the positive
terminal and earth point in the sam eorder
as when connecting th edonor battery in
the jump-startin gprocedure
(Y page 348).
X Read th ebattery charger's operating
instructions before charging the battery. Battery
347Breakdown assistanc e Z

Jum
p-starting G
WARNING
There is arisk of acid burns when jump-starting avehicle due to the gases which escape from
the battery. Do not lean over the batter ywhile the engin eisbeing jump-started. G
WARNING
Gases escapin gfrom th ebattery during jump-starting may cause minor explosions. Avoid cre-
ating sparks. Keep naked flames away from the battery, and do not smoke.
Comply with safety precautions when handling batteries. You will find these under "Battery" in
the index.
! Avoid repeated and lengthy startin gattempts. Otherwise, non-combuste dfuel may dam-
age the catalytic converter 24
and create arisk of fire.
Do not use arapid-charging device to start the engine.
Make sure the jump leads are not damaged.
Make sure the jump leads are not touching any other metal objects when they are connected
to the battery.
If your vehicle's battery is discharged ,the engin ecan be jump-started from another vehicle
or from asecond batter yusing jum pleads.
Observ ethe followin gpoints:
X The battery is not accessible in all vehicles. If the other vehicle' sbattery is not accessible,
jump-start the vehicle using asecond batter yorajump-star ting device.
X Only jump-start the vehicl ewhen th eengineisc old an dthe catalytic converter system has
cooled down 25
.
X Do no tstart the engine if the battery is frozen. Let the battery thaw first.
X Jump-starting may only be performed from batterie swithanominal voltage of 12 V.
X Only use jum pleads which have asufficient cross-section and insulated terminal clamps.
X Make sure that the jump leads cannot come into contact with parts, such as the pulley or
the fan. Thes eparts move when the engine is started and while it is running.
X If the battery is fully discharged ,leave the batter ythat is being used to jump-star tconnected
for afew minutes befor eattempting to start. This charges the empty battery alittle.
i Jump leads and further information about jump-startin gcan be obtained from any
Mercedes-Ben zService Centre, for example.
X Make sure that the two vehicles do not touch.
X Secure the vehicle by applying the electric parking brake.
X Shif tthe transmission to position P.
X Tur nthe key to position 0(Y page 139) in the ignition lock and remove it. On vehicles with
KEYL ESS-GO ,make sure the ignition is switched off (Y page 139). All indicator lamps in the
instrumen tcluster must be off.
24 Only vehicles with apetrol engine.
25 Only vehicles with apetrol engine. 348
Jump-startingBreakdown assistance

X
Switch off al lelec trical consumers (e.g. radio ,blow er, etc.).
X Ope nthe bonnet (Y page 318). Position number
Bidentifies the charged battery of the other vehicle or an equivalent jump-
startin gdevice.
X Slide cover :of positiv eterminal ;in the direction of the arrow.
X Connect positiv eterminal ;on your vehicle to positiv eterminal =of donor battery B
using the jum plead, beginning with your own battery.
X Start the engine of the donor vehicle and run it at idling speed.
X Connect negative terminal ?of donor battery Bto eart hpoint Aof your vehicle using
the jum plead, connectin gthe jum plead to donor battery Bfirst.
X Start the engine.
X Allow the engine to run for afew minutes befor edisconnecting the jump lead.
X First, remov ethe jum plead from eart hpoint Aand negative terminal ?,then from positive
terminal ;and positive terminal =,each time disconnecting from the contacts on your
own vehicle first.
X After removing the jump lead, close cover :on positive terminal ;.
X Have the battery checked at aqualified specialist workshop, e.g. aMercedes-Ben zService
Cent re.T he jump-star ting procedure is not astandard operatin gstate; therefore, have the
battery checked. Towing and tow-starting
Important safet
ynotes
Observe the legal requirements for the rele-
vant countries when towing. G
WARNING
If you tow the vehicle, you must use arigid
towing bar if: Towing and tow-starting
349Breakdown assis tance
Z