sensor MERCEDES-BENZ M-CLASS SUV 2011 Workshop 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

R
you are drivin gonsandorg ravel.
R yo ua dopt averys porty driv ings tyle (cor-
nering at hig hspeeds or driv ingw ith high
rates of acceleration).
R you are towing avery heavy or lar getrailer.
R you are driving with aheavy load (in the
vehic le oron the roof).
Restarting th etyre pressure lo sswarn-
ing system Restart the tyre press
urel oss warnin gsystem
if you have:
R changed the tyre press ure
R changed the whe elso rtyres
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
press ures on the inside of the fuel filler flap
to ensur ethat the tyr epressure in all four
tyre siss et correctly for the respective
operating conditions.
X Observ ethe notes in the section on tyre
pressures (Y page 359). G
WARNING
The tyr epressure loss warn ings ystem can
only give reliabl ewarnings if you have set the
correct tyre pressure.
If an incorrect tyre pressure is set, these
incorrect values wil lbemonitored.
At yre with insufficient pressure results in
vehicle instability when driving, thu sincreas-
ing the risk of an accident.
X Make sure that the key is in pos i-
tion 2(Ypage139) in the igniti onlock.
X Press =or; on the steering wheel
to select the Serv. menu.
X Press 9or: to select Tyre pres‐ sure .
X Press the abutton.
The RunF lat Indicato ractive Restart with OK message ap
pears in the
multifunction display. If you wis
htoconfirm the restart:
X Press the abutton.
The Tyre press. no wOK? message
ap pe ars in the multifunction display.
X Press the 9or: button to select
Yes .
X Press the abutton.
The RunF lat Indicato rrestarted message ap
pears in the multifunction dis-
play.
After ateach-in period, the tyr epressure
loss warn ings ystem wil lmonitor the set
tyr ep ressures of all fou rtyres.
If you wis htocancel the restart:
X Press the %button.
or
X If the Tyre press. now OK? message
appears ,press 9 or: to select
Cancel .
X Press the abutton.
Th et yre press urev alues stored at the last
restart wil lcontinue to be monitored. Tyre pressur
emonitor
Important safety notes If
at yre press urem onitor system is fitted, the
vehicle's wheels have sensor sfitted that
monitor the tyre pressures in all four tyres.
The tyre pressure monitor warns you when
the pressure drops in one or more of the
tyres. The tyre pressure monitor only func-
tions if the correct sensors are fitted to all
wheels. G
WARNING
The tyre pressure monitor does not warn you
of an incorrectly set tyre pressure. The table
on the inside of the fuel filler flap wil lhelp you
decide whether the tyre pressures should be
correc ted.
The tyr epressure monitor is not abl etow arn
you of asudden loss of pressure, e.g. if the Tyr
epressure
361Wheels and tyres
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

Usefu
linfor mation ............................ 370
Notes on the technical data .............370
Genuine Mercedes-Benz parts .........370
Vehicle electronics ...........................371
Vehicle identification pla tes............ 372
Service products and capacities .....373
Vehicle da ta...................................... 377
Tailgate opening dimensions ...........378
Trailer tow hitch ................................ 378
24-GHz radar sensor system (coun-
tr yo verview) ..................................... 380 369Technical
data

Usefu
linfor mati on
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviation sare possible .Please
not ethat your vehicle ma ynot be equipped
with all featur es described. This also
applies to safety-releva ntsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 24).Note
sont hetechnical data
You can fin dtechnica ldatao nthe Internet at:
http://www.mercedes-benz.com
i The technical dat awas determined in
accordance wit hECDirectives. All data
applies to th evehicle's standard equip-
ment. Therefore, th edatam ay differ for
vehicles wit hoptional equipment. You can
obtain further information from a
Mercedes- BenzService Centre. Genuine Mercedes-Ben
zparts
Mercedes-Ben ztests genuin eparts and con-
version parts and accessories which have
been specifically approved for your vehicle for
their reliability, safety and suitability. Despite
ongoing market research, Mercedes -Benz is
unabl etoe valuat eother parts. Mercedes-
Benz therefore accepts no responsibility for
the use of such parts in Mercedes-Ben zvehi-
cles, even if they have been independently or
officially approved.
In Germany and some other coun tries, certain
parts are only officially approved for installa-
tion or modification if they comply with legal
requirements. All genuine Mercedes-Benz
parts meet this requirement .The use of non- approved parts ma
yinvalidat ethe vehicle's
general operating permit. This is the case if:
R they cause achange of the vehicle type
from that for whic hthe vehicle' sgeneral
operating permit was granted.
R other road users could be endangered.
R the emission or noise levels are adversely
affected. G
WARNING
Drivin gsafety may be impaired if non-
approved parts, tyres and wheels or safety-
relevant accessories are used.
This could lead to malfunctions in safety-rel-
evant systems, e.g. the brake system. This
could cause you to lose control of your vehicle
and cause an accident.
For this reason, Mercedes-Benz recommends
that you use genuine Mercedes-Benz parts or
parts of equal quality. Only use tyres, wheels
and accessories that have been specifically
approved for your vehicle.
! Airbags and sea tbelt tensioners, as well
as control unit sand sensors for these
restraint systems may be installed in the
following areas of your vehicle:
R doors
R doo rpillars
R door sills
R seats
R dashboard
R instrument cluster
R centre console
Do not install accessories such as audio
systems in these areas. Do not carr yout
repairs or welding .You coul dimpair the
operating efficie ncyoft he restraint sys-
tems.
Hav eaftermarket accessories installe dat
aq ualified specialist workshop. Mercedes-
Benz recommends that you use a
Mercedes -Benz Ser vice Centre for thi spur-
pose. 370
Genuine Mercedes-Benz partsTechnical data

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

24-G
Hzradar sensor system (country overview)
The 24 GHz radar sensor sys temr equir esseparat eapproval fo reach coun try. Whe nyou are
dri ving in acoun tryinw hichthe ra dar sensor system is no tapproved, you must deacti vate
the syste musing the on-boar dcompu ter( Ypage 24 9).T he curren tcountry over view can be
obtain ed fromaMercedes-Benz Ser vice Centre.
Vehicles with anavigation system: the radar sensor system is deactivated automatically
near radio tele scope facilities.
The currently active systems ar eautom atically deactivated:
R DISTRONIC PLUS (Y page174)
R Blind Spo tAssist (Y page 208)
R Activ eBlind Spot Assist(Y page212)
R PRE-SAFE ®
Brake (Y page45)
Ad isplay message appears in the multifunction display to tell you that the radar sensor system
is being switched off (Y page 272).
BA SP LUS (Y page 62) is then also unavailable.
If th edeactiva tion does not occur automatically ,you must deactiva tethe radar sensor system
using the on-board computer (Y page 249).
Vehicles withou tnavi gation and vehicles for Australia: you must deactivate the radar
sensor system using the on-bo ardc omputer when you are near aradio telescop efacility
(Y page 249). Country Radio telescope
facilities Geographical latitude and
longitude Distance to be
maintained
from the facility Egypt – – –
Andorra – – –
Australia Parkes 32°59'59
"S,14 8°1 5'44" E 10 km
Narrabri 30°18'52" S,149°32'56" E 10 km
Canberra 35°23'54" S,148°58'40" E 3km
Western Australia 26°3
7'13"S,117°30'40" E 10 km
Bahrain – – –
Belgium – – –
Bosnia-Herzego-
vina – – –
Bulgaria – – –
Den
mark – – –
Germany Effelsberg 50°31'32" N, 06°53'00" E 6.5 km380
24-GHz radar sensor syste
m(countr yoverview)Technica ldata

Country Radio telescope
facilities Geographica
llatitud eand
longitude Distance to be
maintained
from th efacility Estonia – – –
Finl
and Me
tsähovi 60°13'04
"N,24°23'37" E 7km
Tuorla 60°24'56
"N,22°26'31" E 5km
France Plateau de Bure 44°38'01" N, 05°54'26" E 35 km
Floirac 44°50'10" N, 00°31'37" W 35 km
Gibraltar – – –
Greece – – –
United Kingdom Cambridge 52°09'59" N, 00°02'20" E 9km
Darnhall 53°09'22
"N,02°32'03" W 5km
Jodrell Bank 53°14'10" N, 02°18'26" W 9km
Knockin 52°47'24" N, 02°59'45" W 5km
Pickmere 53°17'18
"N,02°26'38" W 5km
Irel
and – – –
Icel
and – – –
Italy Medicina 44°31'14" N,11°38'49
"E 20 km
Noto 36°52'34" N, 14°59'21" E 8km
Sardinia 39°29'50" N, 09°14'40" E 15 km
Yemen – – –
Jordan – – –
Canada – – –
Qatar – – –
Croatia – – –
Kuwait – – –
Latvia Ventsp
ils 57°33'12" N, 21°51'17" E 8.5 km
Leb
anon – – –
Lithuania – – –
Luxem
bourg – – –
Malaysia – – –24-GHz radar sensor syste
m(country ov erview)
381Technicaldata Z