2011 MERCEDES-BENZ M-CLASS SUV radio

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

Frequencies for th
egarage doo ropener Th
er adio typ eapproval number and th efrequency range for th egarag edoor opener can be
fou ndonthe Interne tat: http://www.mercedes-benz.de/betriebsanleitung. Floormats
G
WARNING
Make sure that there is sufficient clearance
around the pedals when floormats are used,
and that the floormats are properly secured.
The floormats must be correctly secured at all
times using retainer sand press-studs.
Before you drive off ,chec kthe floormats and
secur eifnecessary. Afloormat which is not
properly secured can slip and, thereby, inter-
fere with the movemen tofthe pedals.
Do not plac efloormats on top of one another. Floormat on the driver's side (example)
X
Driver's seat/front-passenger seat:
slide the respective seat back.
X Rear seats: slide the respective seat for-
wards.
X To fit: place the floorma tinthe footwell.
X Press studs :ontoretainers ;.
X To remove: pull the floormat off retain-
ers ;.
X Remov ethe floormat. Infrared reflective windscreen
The infrared reflecting glass prevents the
vehicle interior from becoming too hot. It also blocks radio waves up int
othe gigahertz
range. In orde
rtooperateradio-controlled equip-
ment, e.g. toll recording systems, areas :on
the windscreen are permeable to radio
waves. In these areas, you can install radio-
controlled systems.
Thes earea scan best be seen from outside
the vehicle by observing the light reflected off
the windscreen. Retrofitted anti-glar
efilm
Anti-glar efilm retrofitted to the inside of the
windows can interfer ewith radio/mobile
phone reception. This is particularly the case
for conductive or metallic-coated films. Infor-
mation about anti-glar efilm can be obtained
from any Mercedes-Ben zService Centre. 316
FeaturesStowing and features

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
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

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

tyre is penetrated by
aforeign object .Inthe
event of asudden loss of pressure, bring the
vehicl etoah altbyb rakingcarefully. Do not
make any sudden steering movements when
doing so.
Informatio nontyre pressures is displayed in
the multifunction display. After afew minutes
of driv ing, the curren ttyre pressure of each
tyre is sho wn inthe multifunction display.
i Thet yre pressure values indicated by the
on-board computer may differ from those
measured at afilling station with apressure
gauge. Th etyre pressures shown by the on-
board computer refer to thos emeasured at
sea level. At high altitudes, the tyr epres-
sure values indicated by apressure gauge
are higher than thos eshown by the on-
boar dcomputer .Inthis case ,donot reduce
the tyr epressures.
i Theo peration of the tyr epressure moni-
to rc an be affected by interference from
radio transmitting equipment (e.g. radio
headphones ,two-way radios) that may be
being operated in or near the vehicle.
Checking tyr epressure electronically X
Make sure that the key is in position 2
(Y page 139) in the ignitio nlock.
X Press the =or; button on the steer-
ing wheel to select the Serv. menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The curren ttyre pressure for each wheel
will be displayed in the multifunction dis-
play.
If the vehicle has been parked for longe rthan
20 minutes, the Tyre pressures will be
displaye
dafter afew minutes of driving message appe
ars.
After ateach-in period, the tyr epressure
monito rautomatically recognise snew
wheels or new sensors. As long as aclear
allocation of the tyre pressure values to the individual wheels is not possible
,the Tyre pressure monito
ractive displa
ymes-
sage is shown instead of the tyr epressure
display. Th etyre pressures are already being
monitored.
i Ifas pare wheel/emergenc yspare wheel
is fitted, the system may continue to show
the tyr epressure of th ewheel that has
been removed for afew minutes. If this
occurs, note that the value displayed for
the position where the spare wheel/emer-
gency spare wheel is fitted is not the same
as the spare wheel/emergenc yspare
wheel's current tyr epressure.
Tyre pressure monito rwarning mes-
sages If the tyre pressure monitor detects
asignifi-
cant pressure loss on one or more tyres, a
warnin gmessage is shown in the multifunc-
tion display. Awarning ton ealso sounds and
th et yrep ressure warning lamp ligh tsup in
the instrumen tcluster.
Eac htyret hat is affected by asignificant loss
of pressure is highlighted in th epressure dis-
play.
If the Please correc ttyrep ressure messag
eappear sinthe multifunctio ndis-
play:
X Chec kthe tyr epressure on all fou rwheels
and correc titifn ecessary.
i If the wheel positions on the vehicle are
inter changed, the tyre pressures may be
displ ayed for th ewrong positions for a
short time .This is rectified after afew
minutes of driving, and the tyr epressures
are displayed for th ecorrect positions.
Restarting th etyre pressure monitor When yo
urestar tthe tyr epressure monitor,
all existing warning message sare deleted and
th ew arning lamps go out. The monitor uses
the currently set tyre pressures as the refer-
ence values for monitoring. In most cases, the
tyre pressure monitor will automatically 362
Tyr
epressureWheels and tyres

detec
tthe new referen ce values after you
have changed th etyrep ressure.
i For an overview of the menus, see
(Y pag e238).
If you wis htodefinethe new reference values
manually:
X Use the tabl eonthe insid eofthe fuel filler
fla ptoe nsure that the tyre pressure is set
correctly in all four tyres for the current
operating conditions.
Also observe the notes in the section on
tyre pressures (Y page359).
X Make sure tha tthe key is in position 2in
the ignition lock.
X Press the =or; button on the steer-
ing wheel to selec tthe Service menu.
X Press the 9or: button to select
Tyre pressu re .
X Press the abutton.
The multifunction display shows the cur-
ren ttyre pressure of the individual tyres or
the Tyrepressures will be dis‐ played after a few minutes of driv‐
ing message.
X Press the :button.
The Usec urrent pressures as new reference values message appears in
th em ultifunction display.
If you wish to confirm the restart:
X Press the abutton.
The Tyre press. monito rrestarted message appears in th
emultifunction dis-
play.
After you have driven for afew minutes, the
system checks whether the curren ttyre
pressures are within the specified range.
The new tyre pressures are then accepted
as reference values and monitored.
If you wish to cancel the restart:
X Press the %button.
The tyre pressure values stored at the last
restart will continue to be monitored. Radio typ
eapproval for the tyr epres-
sur em onitor In certain countries,
aradio type approval for
the tyre pressure monitor may be required.
The radio type approval number for the tyre
pressure monitor can be found online at:
http://www.mercedes-benz.de/
betriebsanleitung. Changing
awheel Flat tyre
Th e" Breakdown ass istance" section
(Y pag e334) contain sinformation and notes
on how to dea lwith aflat tyre. It also provides
instructions on changing awhee lorf itting the
spar ewhee lore mergency spar ewheel. Interch
angin gthe wheels G
WARNING
Interchange th efront and rea rwheels only if
they hav ethe sam edimensions :for example
size, offset ,etc.
After every whee linterchange/change, have
the tightening torque checked at aqualified
specialist workshop that has the necessary
specialist knowledg eand tool stocarry out
the work required. Mercedes-Benz recom-
mends that you use aMercedes-Benz Service
Centr efor this purpose. In particular ,work
relevant to safet yoronsafety-related sys-
tems must be carried out at aqualified spe-
cialist workshop.
The wheel scould work loose if they are not
tightened to atorqu eof150 Nm.
For safety reasons, Mercedes- Benz recom-
mends that you only use wheel bolts of the
correct siz ewhich hav ebeen approved for
Mercedes-Ben zvehicles.
The wear patterns on the fron tand rea rtyres
differ ,dependin gontheopera tingconditions.
Interchange the wheels before aclear wear
pattern has formed on th etyres. Front tyres Changing
awheel
363Wheels and tyre s Z

H
Environmenta
lnote
Daimler AG also supplies reconditioned
assemblies and part swhicha re of the same
quality as new parts. For these, the same war-
ranty applie sasfor new par ts.
Always spe cify the vehicle identificatio nnum-
ber (VIN )(Y page 372) and th eengine num-
ber (Y page373)w hen orderi nggenuine
Mercedes-Ben zparts. Vehicle electronics
Tampering with th
eengine electron-
ics G
WA
RNING
Only have work on the engin eelectronics and
related component scarried out at aqualified
specialist workshop which has the necessary
specialist knowledge and tools to carry out
the work required .Mercedes-Ben zrecom-
mends that you use aMercedes-Ben zService
Centr efor this purpose. In particular ,work
relevant to safet yoronsafety-related sys-
tems must be carried out at aqualified spe-
cialist workshop .Otherwise, the vehicle's
roadworthiness could be affected.
! Only have maintenanc ework on the
engin eelectronics and its associated parts,
such as control units, sensor sand connec-
tor leads, carried out at aqualified special-
ist workshop, e.g. aMercedes-Benz Ser vice
Centre. Vehicle compo nentsm ay other-
wise wear mor equickly and the vehicle's
operatin gpermit may be invalidated. Retrofitting of two-way radios and
mobile phones (RF transmitters)
Use th eTechnical Specification
ISO/TS 21609 30
implementation regulation
when retrofitting RF (radi ofrequency) trans-
mitters. If your vehicle has fittings for two-way radio
equipment, use th
epower supply or aerial
connection sintended for use with the basic
wiring. Be sure to obser vethe manufacturer's
additional instructions when installing the fit-
tings.
! Hav eaftermarket radi ofrequency trans-
mittin gequipmen tinstalled at aquali fied
sp ec ialist worksho p. Mercedes-Benz rec-
ommends that you use aMercedes-Benz
Ser vice Centre for thi spurpose.
The transmission output at the aerial base
must not exceed the maximum values below. Waveband Maximum trans-
mission output
(PEAK)
Short wave
(f
<54M Hz) 100 W
4mw
aveband 30 W
2mw
aveband 50 W
Trunked radio/Tetra 35 W
70 cm waveband 35 W
GSM 900/AMPS 10 W
GSM 1800 10 W
UMTS 10 W
The following aerial positions may be used if
RF transmitters have been properly installed:
30 ISO/TS 216 09–Technical Specification for Road Vehicles (EMC) guidelines for installation of aftermarket
radio frequenc ytransmitting equipment. Vehicle electronics
371Technicaldata Z