light MERCEDES-BENZ M-CLASS SUV 2011 Owner's Guide

X
To sto pthe alarm using the key: insert
th ek ey into the ignition lock.
The alarm is switched off.
or
X Pres sthe % or& button on the key.
The alarm is switched off.
X To stop th ealarm using KEYLESS-GO:
grasp the outside door handle. The key
must be outside the vehicle.
The alarm is switched off.
or
X Press the Star t/Stopbutton on the dash-
board. The key must be inside the vehicle.
The alarm is switched off. Tow-away protection
An audible and visual alarm is triggered if your
vehicle's angle of inclination is altered while
tow-away protection is primed. This occurs if
the vehicle is jacked up on one side ,for exam-
ple.
X To pri me:lock the vehicle with the key or
KEYLESS-GO.
Tow-away protection is primed after
approximately 30 seconds.
X To deactivate: unlock the vehicle with the
key or KEYLESS-GO.
Tow-away protection is deactivated auto-
matically.
To prevent afalse alarm, deactivate tow-away
protection manually if your vehicle:
R is being transported
R is being loade donto aferr yorc ar trans-
porter, for example
R is parked on amovable surface, e.g. in a
split-leve lgarage
Deactivating:
X Remove the key from the ignition lock. X
Press button :.
Indicator lamp ;lights up briefly.
X Lock the vehicle with the key or KEYLE SS-
GO.
Tow-awa yprotectio nisdeactivated.
Tow-away protection remains deactivated
until:
R the vehicle is unlocked again.
R ad oor is opened and closed again.
R the vehicle is locked again. Interior motion sensor
If the interior motion sensor is primed, avis-
ual and audible alarm is triggered if move-
ment is detected in the vehicle interior while
the vehicle is locked. This occur sifsomeone
reaches int othe vehicle interior, for example.
To activate:
X Make sur ethat the side windows and the
slidin gsunroof/panorama sliding sunroof
are closed.
This will prevent false alarms.
X The interior motion senso risp rime dafter
approximately 30 seconds.
To switch off:
X Unlock th evehicle with the key or KEY-
LESS-GO.
The interior motion sensor is deactivated
automatically. Anti-theft systems
69Safety Z

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).Key
Key functions
Locking and unlocking centr ally The key centrally locks/unlocks:
R the doors
R the tailgate
R the fuel filler flap G
WAR
NING
Only for the Unite dKingdom: if the vehicle
has been locked with the key or with KEY-
LESS-GO, the double lock function is activa-
ted as standard. It is then not possible to open
the doors from inside the vehicle.
Therefore, do not leave any people behind in
the vehicle, particularly children ,elderly peo-
ple or people requirin gspecial assistance. As
ar esult, they may not be able to free them-
selves in the event of an emergency. They
could be seriously or even fatally inju redby
prolonged exposure to extremely high or low
temperatures, for example. In this case, res-
cuin gpeople from outside the vehicle is diffi-
cult.
Deac tivate th einterior motion sensor before
you lock the vehicle. The doors can then be
opened from the inside after the vehicl ehas
been locked from the outside. G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open adoor from inside the vehicle at any
time, even if it has been locked
R star tthe vehicle usin gakey which has been
left in the vehicle
R release the electric parking brake
They could thereby endanger themselves and
others. Never leave children unsupervised in
the vehicle. Alway stake the key with you
when leaving the vehicle, even if you are only
leaving it for ashort time. G
WARNING
If ak ey rin gistoo heavy or too large, the
weight actin gonthe key coul dcause it to turn
in the ignition lock or catc honthe steering
wheel. This coul dcause the engine to be
switched off suddenly. You may lose control
of the vehicle and cause an accident. Do not
attac hany heavy or large key rings to the key
that is inserted in the ignition. :
& To lock the vehicle
; F To open/clos ethe tailgate
= % To unlock the vehicle
When unlocking, the tur nsignals flash once.
When locking, they flash three times.
When it is dark, the surroun dlighting also
comes on if it is activated in the on-board
computer (Y page 248).
You can also set an audible signal to confirm
that the vehicle has been locked. The audible 72
KeyOpening and clos
ing

Emergency key element
General notes If th
evehicle can no longer be unlocked with
th ek ey, us ethe emergency ke yelement.
If you use th eemergency key element to
unlock and open the dri ver'sd oor ,the anti-
theft alar msystem will be triggered
(Y page 68).
The reare several ways to tur noff th ealarm:
X To turn the alarm off with the key: press
the % or& buttonont he key.
or
X Insert the key int othe ignition lock.
or
X To deactivat ethe alarm with KEYLESS-
GO: press th eStart/Stop button in the igni-
tion lock. The key must be in the vehicle.
or
X Lock or unlock the vehicle using KEYLESS-
GO. The key must be outside the vehicle.
Removing the emergency key element X
Pus hrelease catch :in the direction of
the arrow and at the same time, remove
emergency key element ;from the key. Key battery
Important safety notes Hav
ethe batteries changed at aqualified spe-
cialist workshop. G
WARNING
Batteries are toxic and contain caustic sub-
stances. For this reason, keep batteries out of
the reach of children.
If ab attery has been swallowed ,visi tad octor
immediately. H
Environmental note Bat
terie sc ontain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collec teds ep-
arately and disposed of in an
environmentally responsible
recycli ngsystem. Dispose of batt
eries in an
envi ronmentally responsible
manner. Take discharged
batteries to aqualified spe-
cialist workshop or to acol-
lection point for used batt er-
ie s.
Checking th ebattery X
Press the &or% button.
Th eb attery is workin gproperl yifthe bat-
ter yc hec klamp :lights up briefly
If battery chec klamp :does not light up
briefly during the test, the batter yisdis-
charged.
X Changing the battery (Y page 75)
i If the key battery is checked within the
signal reception range of the vehicle, press- 74
KeyOpening and closing

Problem Possible causes/consequences and
M Solutions
The engin
ecannot be
started using the key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting ,and try to start the engine again.
If this doe snot work:
X Check the starter battery and charge it if necessary
(Y page 343).
or
X Jump-start the vehicle (Y page 348).
or
X Consult aqualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. Ad
oor is open. Therefore, the key can notb ed etected as easily.
X Close the door and tr ytostart the vehicle again. There is interferenc
efrom apowerfu lsource of radio waves.
X Start your vehicle with the key in the ignition lock. Doors
Important safety notes
G
WARNING
Only fo rthe Unite dKingdom: if the vehicle
has been locked with the key or with KEY-
LESS-GO, the double lock func tion is activa-
ted as standard. It is then not possible to open
the doors from inside the vehicle.
Therefore, do not leav eany people behind in
the vehicle, particularly children, elderly peo-
ple or people requiring special assistance .As
ar esult, they may not be able to free them-
selves in the event of an emergency. They
could be seriously or even fatally injured by
prolonged exposur etoextremely hig horlow
tempera tures, for example. In this case ,res-
cuin gpeople from outside the vehicle is diffi-
cult.
Deac tivate the interior motion sensor before
you lock the vehicle .The doors can then be
opened from the insid eafter the vehicl ehas
been locked from the outside. G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open adoor from inside the vehicle at any
time, even if it has been locked
R star tthe vehicle usin gakey which has been
left in the vehicle
R release the electric parking brake
They could thereby endanger themselves and
others. Never leave children unsupervised in
the vehicle. Alway stake the key with you
when leaving the vehicle, even if you are only
leaving it for ashort time. Unlocking and opening th
edoors
from the inside
For all countries except the United King-
dom: you can open adoor from inside the
vehicle even if it has been locked.
Only for th eUnited Kingdom: if the vehicle
has been locked with the key or with KEY-
LE SS-G O, the doubl elock function is activa-
ted as standard. It is then not possible to open Doors
77Opening and closing Z

Using th
ekey i
The key must be close to the driver 'sdoor
handle.
X Point the tip of the key at the driver' sdoor
handle.
X Press and hold the &button until the
side window sand the sliding sunroof or the
panorama sliding sunroof are fully closed.
X Make sure that all the side windows and the
sliding sunroof or panorama sliding sunroof
are closed.
On vehicles with apanorama sliding sunroof:
X Press and hold the &button again until
the roller sunblinds of the panorama sliding
sunroof close.
X To interrupt convenienc eclosing:
release the &button.
Using KEYLESS-GO The KEYL
ESS-GOkey must be outside the
vehicle .All the doors must be closed. X
Touch recessed sensor surface :on the
door handle until the side windows and the
sliding sunroof or the panoram asliding
sunroof are fully closed.
i Make sure you only touch recessed sen-
sor surface :.
X Make sure that all the side windows and the
sliding sunroof or panoram asliding sunroof
are closed. On vehicles with
apanorama sliding sunroof:
X Touch recessed senso rsurface :on the
door handle again until the roller sunblinds
of the panorama sliding sunroof close.
X To interrupt convenienc eclosing:
release recessed sensor surface :on the
door handle. Resetting the side windows
If as ide window can no longer be closed fully,
you must reset it.
X Close all the doors.
X Turn the key to position 1or 2in the ignition
lock.
X Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed. (Y page 83)
X Hold the switch for an additional second.
If the side window opens again slightly:
X Immediately pull the corresponding switch
on the door control panel until the side win-
dow is completely closed (Y page 83).
X Hold the switch for an additional second.
X If the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again. Problems with the side windows
Problem: aside window cannot be closed
because it is blocked by objects, e.g.
leaves in th ewindow guide.
X Remov ethe objects.
X Close the side window.
Problem :aside window cannot be closed
and you cannot see th ecause. G
WARNING
Closing the side windows wit hincrease dforce
or withou tthe anti-entrapmen tfeature could Side windows
85Openingand closing
Z

lead to serious or even fatal injury. Make sure
that nobody can becom etrapped when clos-
ing the side windows.
If as ide window is obstructed during closing
and reopen sagain slightly:
X Im me diately after the window blocks, pull
the correspondin gswitc hagain until the
side window has closed.
The side window is close dwith increased
force.
If as ide window is obstructed again during
closing and reopen sagain slightly:
X Im me diately after the window blocks, pull
the correspondin gswitc hagain until the
side window has closed.
The side window is close dwithout the anti-
entrapmen tfeature. Sliding sunroof
Important safet
ynotes
Your vehicle may be fitted with asliding sun-
roof or apanorama sliding sunroof. In the fol-
lowing section, the ter m"slidin gsunroof"
refers to both types of sliding sunroof. G
WARNING
Make sure that nobody can become trapped
when opening and closing the sliding sunroof.
If there is arisk of entrapment ,release the
switch immediately. Durin gautomatic opera-
tion ,push the switc hbriefly in any direction
to stop the sliding sunroof. G
WARNING
Th eg lass in th epanoram asunroof could
brea kinana ccident. If yo uare not wearin ga
seat belt ,there is arisk that you could be
thrown through the opening in the event of the
vehicle overturning. Therefore, always wear a
seat belt to reduce the risk of injuries. G
WARNING
Children could injur ethemselves if they oper-
ate the slidin gsunroof.
Never leave children unsupervised in the vehi-
cle. Always take the key with you when leaving
the vehicle, even if you are only leaving it for
as hort time.
! Only open the panoram asliding sunroof
if it is free of snow and ice. Otherwise, mal-
func tions ma yoccur.
Do not allo wanything to protrude from the
sliding sunroof. Otherwise, the seals could
be damaged.
i Resonance noises can occur in addition
to the usual airflow noises whe nthe sliding
sunroof is open. They ar ecaused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or open aside window slightly to reduce or
eliminat ethese noises. Operating th
esliding sunroof
Opening and closing i
You can continue to operate the sliding
sunroof after switching off the engine or
removing the key. This function remains
activ efor fiv eminutes or until the driver's
or front-passenger door is opened. Overhead control panel
:
To raise
; To open
= To close/lower 86
Slidin
gsunroofOpenin gand closing

X
Tur nthe key to position 1or 2in the ignition
lock.
X Press or pull the 2switchinthe corre-
sponding direction.
i If you press the 2switchbeyond the
point of resistance, an automatic opening/
closing process is star tedint he corre-
sponding direction .You can stop automatic
operation by pressin gagain.
The sun protection cover automatically opens
along with the slidin gsunroof. You can open
or close the sun protection cover manually
when the sliding sunroof is raised or closed.
Rain closin gfeature When the key is in position
0in the ignition
lock or is removed, the sliding sunroof closes
automatically:
R if it start storain
R at extreme outside temperatures
R after six hours
R if there is amalfunction in the power supply
The rear of the sliding sunroof is then raised
in order to ventilate the vehicle interior.
i If the sliding sunroof is obstructed when
being closed by the rain closing feature, it
opens again slightly. The rain closing fea-
ture is then deactivated.
The sliding sunroof does not close if:
R it is raised at the rear.
R it is blocked.
R no rain is falling on the area of the wind-
screen being monitored by the rain sensor
(e.g. because the vehicle is under abridge
or in acarport).
Resetting Reset the sliding sunroof if it does not move
smoothly. X
Turn the key to position 1or 2in the ignition
lock.
X Raise the sliding sunroof fully at the rear
(Y page 86).
X Keep the 2switch presse dfor another
second.
X Make sure that the slidin gsunroof can be
fully opened and closed again (Y page 86).
X If this is not the case, repeat the steps
above again.
! If the sliding sunroof still cannot be
opened or closed fully after resetting, con-
tact aqualified specialist workshop. Operating the panorama slidin
gsun-
roof
Opening and closi ng Overhead con
trol panel
: To raise
; To open
= To close/lower
X Turn the key to position 1or 2in the ignition
lock.
X Push or pull the 2switch in the corre-
sponding direction.
i If you press the 2switch beyond the
point of resistan ce,ana utomatic opening/
closing process is started in the corre-
sponding direction. You can stop automatic
operation by pressing again. Sliding sunroof
87Openingand closing Z

Rain closin
gfeature Whe
nthe key is in position 0in the ignition
lock or is removed ,the panorama slidin gsun-
roof closes automatically:
R if it starts to rain
R at extreme outsid etemperatures
R after six hours
R if there is amalfunction in the power supply
The panorama sliding sunroof remains raised
at the rear in order to allow ventilation of the
vehicle interior.
i If the panorama sliding sunroof is obstruc-
ted when being closed by the rain closing
feature, it opens again slightly. The rain
closing feature is then deactivated.
The panorama sliding sunroof does not close
if:
R it is raised at the rear.
R it is blocked.
R no rain is falling on the area of the wind-
screen being monitored by the rain sensor
(e.g. because the vehicle is under abridge
or in acarport). Operating the panoram
asliding sun-
roof roller sunblinds
Genera lnotes The roller sunblinds shield the vehicle interior
from sunlight. The two roller sunblinds can
only be opened and closed together when the
panoram asliding sunroof is closed. G
WARNING
Make sure that nobody can become trapped
as you open or close the roller sunblinds. Opening and closing Overhead control panel
:
To open
; To open
= To close
X Turn the key to position 1or 2in the ignition
lock.
X Press or pull the 2switch in the corre-
sponding direction.
i If you press the 2switch beyond the
point of resistance, an automatic opening/
closing process is started in the corre-
sponding direction. You can stop automatic
operation by pressing again.
Resetting the panora masliding sunroof
and th eroller sunblinds Reset the panorama sliding sunroof and the
roller sunblinds if the panorama sliding sun-
roof or the roller sunblinds do not move
smoothly.
X Turn the key to position 1or 2in the ignition
lock.
X Pull the 2switchrepeatedly to the point
of resistanc einthe direction of arrow =
until the pano rama sliding sunroof is fully
closed.
X Kee pswitch 2pulled for an additional
second.
X Pull the 2switchrepeatedly to the point
of resistanc einthe direction of arrow =
until the roller sunblinds ar efully closed. 88
Sliding sunroofOpenin
gand closing

X
Kee pswitch 2pulled for an additional
second.
X Make sure that the panorama sliding sun-
roof (Y page 87) and the rolle rsunblinds
(Y page 88 )can be fully opened again.
X If this is no tthe case ,repeat the steps
above again.
! If the panorama sliding sunroof and the
roller sunblin dcannot be fully opened or
closed after resetting, contact aqualified
specialist workshop. Problems with the slidin
gsunroof
Your vehicl emay be fitted with asliding sun-
roof or apanorama sliding sunroof. In the fol-
lowing section, the term "sliding sunroof"
refers to both types of sliding sunroof.
Problem: the sunroof cannot be closed
and you cannot see the cause. G
WARNING
You could be severely or even fatally injured
when closing the sliding sunroof with
increased closing force or if the anti-entrap-
ment feature is deactivated. Make sure that
nobody can become trapped when closing the
sliding sunroof.
If the sliding sunroof is obstructed during
closing and reopens again slightly:
X Immediately after the sliding sunroof
blocks, pull the 2switch in the over-
head control panel down to the point of
resistance and hold it until the sliding sun-
roof is closed.
The sliding sunroof is closed with increased
force.
If the sliding sunroof is obstructed again dur-
ing closing and reopens again slightly:
X Immediately after the sliding sunroof
blocks, pull the 2switch in the over-
head control panel down to the point of resistance and hold it until the sliding sun-
roof is closed.
The sliding sunroof is closed without the
anti-entrapment feature. Sliding sunroof
89Openingand closing Z

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).Correct driver'
sseatp osition Observ
ethe safety guideli neso nseat adjust-
men t(Ypage 93).
X Chec kwhether you hav eadjusted seat =
properly.
Electrical seat adjustment (Y page 94)
When adjusting the seat, mak esure that:
R you are as far away from the driver' sair-
bag as possible.
R you are sitting in anormal upright posi-
tion.
R you can fasten the seat belt properly. R
you have moved the backrest to an
almost vertical position.
R you have set the seat angle so that your
thighs ar egently supported.
R you can depress the pedals properly.
X Check whether the head restraint is adjus-
ted properly (Y page 94).
When doing so, mak esure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the centre of the head restraint .Also make
sure that the head restraint's fore-and-aft
position is not too far from the bac kofthe
head.
Observ ethe safety guidelines on steering
wheel adjustment (Y page 98).
X Chec kwhether steering wheel :is adjus-
ted properly.
Adjusti ngthe steering whee lmanually
(Y page 98)
Adjustin gthe steering wheel electrically
(Y page 98)
When adjustin gthe steering wheel, make
sur ethat:
R you can hold the steering wheel with your
arms slightl ybent.
R you can mov eyour legs freely.
R you can see all the displays in the instru-
men tcluster clearly.
Observe the safety guidelines for seat belts
(Y page 46).
X Check whether you have fastened seat
belt ;properly (Y page 47).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip joints
X Befor estartin goff, adjus tthe rear-vie wmir-
ror and the exterior mirrors (Y page 100)92
Correct driver's seat positionSeats, steerin
gwhee land mirrors