2011 MERCEDES-BENZ M-CLASS SUV keyless

Problems wit
hthe key Problem Possible causes/consequences and
M Solutions
Yo
uc annot lock or
unlock the vehicle
using the key. The key battery is discharged or nearly discharged.
X Try again to lock/unlock the vehicle using the remote control
function of the key. Point the tip of the key at the driver' sdoor
handl efrom close rang eand pres sthe % /& button.
If this does not work:
X Chec kthe key battery (Y page 74)and replace it if necessary
(Y pag e75).
X Lock (Y page79) or unlock (Y page79) the vehicl eusing
the emergenc ykey element. The key is faulty.
X Loc k(Ypage 79 )orunlock (Y page79) the vehicl eusing
the emergenc ykey element.
X Hav ethe key chec kedataq ualified specialist workshop. You can no longer lock
or unlock the vehicle
using KEYLESS-GO. There is interference from
apowerfu lsource of radio waves.
X Lock/unloc kthe vehicle usin gthe remote con trol func tion of
the key. Point the tip of the key at the driver's door handl efrom
close rang eand pres sthe % /& button. There is
afault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key at the driver' sdoor handl efrom
close rang eand pres sthe % /& button.
X Hav eKEYLESS-GO checked at aqualified specialist workshop.
If this does not work:
X Check the key battery (Y page 74) and replace it if necessary
(Y page 75).
X Lock (Y page 79) or unlock (Y page 79) the vehicle using
the emergency key element. You have lost
akey. X
Hav ethe key deactivated at aqualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. 76
KeyOpenin
gand 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

the doors from ins
idethe vehicle. Deactivate
the interio rmotion sensor (Y page 69)before
you lock the vehicle. The doors can then be
opened from the inside after the vehicle has
been locked from the outside.
You can only open the rear doors from inside
the vehicle if they are not secured by the
child-proof locks (Y page 60).X
Pull door handle ;.
If the door is locked, locki ngknob :pops
up. The doo risu nlocke dand can be
opened. Centrally lockin
gand unlocking the
vehicle from th einside
You can cen trally lock or unlock the vehicle
from the inside.
The central locking/unlocking button does
not lock or unlock the fuel filler flap.
The button sare locate donboth front doors.
i You can notu nlock the vehicl ecentrally
from the inside if the vehicle has been
locked with the key or KEYLESS-GO.
i It is only possible to lock the vehicle cen-
trally if the front-passenger door is closed. X
To unlock: press button :.
X To lock: press button ;. Automatic locking mechanism
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning.
You could therefor ebelockedout when:
R the vehicle is being pushed.
R the vehicle is being towed.
R the vehicle is being tested on adynamom-
eter. X
To deactivate: press and holdbutton :
for about five seconds until atones ounds.
X To activate: press and hold button ;for
about fiv eseconds until atones ounds.
i If you press one of the two button sand
do not hea ratone, the relevant setting has
already been selected. 78
DoorsOpening and closing

Opening/closing au
tomatically from
outside
Important safet ynotes G
WARNING
Only for the United Kingdom: 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
Monitor the tailgate opening and closing pro-
cedures to make sure that nobody can
become trapped. To stop the opening or clos-
ing procedure, press the closing button on the
tailgate again or pull the handle on the outside
of the tailgate.
! The tailgate swings upwards and to the
rear when opened .Therefore, make sure
that ther eiss ufficien tclearance above and
behind the tailgate.
i You will fin ddetails on the tailga teopen-
ing dimension sinthe Technical data sec-
tion (Y page 37 8). Opening You can open the tailgat
eautomatically with
the key or the handle in the tailgate.
X Press and hold the Fbutton on the key
until the tailgate opens.
or
X When the tailgate is unlocked, pull the han-
dle and let it go again immediately.
Closing You can close the tailgate automatically using
the key, the closin
gbutton 4
or the locking
button 5
. Closing butto
nand locking button (example :vehi-
cle with the EASY-PACK tailgat eand KEYLESS-GO)
X To close: pressclosing button :on the
tailgate.
or
X Press and hold the Fbutton on the key
until the tailgate closes.
X To close and lock simultaneously:
Press lockin gbutton ;on the tailgate.
i Simultaneously closing and lockin gthe
tailgat eisonly possible if all doors are shut
and the key is locate dinthe vicinit yofthe
tailgate.
i The tailgat ecan only be opened and
closed with the key if there is no key in the
ignition lock.
4 For vehicles with the EASY-PACK tailgate only.
5 For vehicles with the EASY-PACK tailgate and KEYL ESS-GO only. Luggag
ecompa rtment
81Opening and closi ng Z

If th
etailgate touches an object whil eclos-
ing, the closing procedure is interrupted
and the tailgate reopens.
i If you leave aKEYLESS-GO key in the lug-
gage compartment, the tailgate wil lnot
lock.
The tail gate is not close dunles saK EY-
LESS-GO key is detected. Opening/closing automatically from
the ins ide G
WARNING
Monito rthe tailgate openin gand closing pro-
cedures to make sure that nobody can
become trappe d. To halt the opening or clos-
ing procedure, press or pull the tailgate's
remote operating button from the driver's
seat again.
You can open and close the tailgate from the
driver's seat when the vehicle is stationary
and unlocked. X
To open: pull remote operating switch :
for the tailgate until the tailgate opens.
X To close: turn the key to position 1or 2in
the ignition lock.
X Press remote operating switch for tail-
gate :until the tailgate is closed. Limiting the opening angle of the tail-
gate
Important safety notes You can limit the opening angle of the tail-
gate. This is possible in the top half of its
opening range, up to approximately 10 cm
before the stop.
!
Make sure there is sufficien tclearanc eto
open the tailgate fully when setting the
openin gangle .The tailgat ecould otherwise
be damaged. Ideally, set the openin gangle
outside.
Activating X
To open the tailgate: pull the handle on
the tailgate.
X To stop the opening procedur eatthe
desire dposition: press the closing button
(Y page 81) in the tailgate or pull the handle
on the outside of the tailgate again.
X To store the position: press and hold the
closing button in the tailgate until you hear
as hort tone.
The opening angl elimiter is activated. The
tailgate will now stop in the stored position
when opening.
Deactivating X
Press and hold the closing button
(Y page 81) in the tailgate until you hear
two short tones. Tailgat
eemergency release
If the tailgate can no longe rbeo pened from
outside the vehicle, use the emergency
release on the inside of the tailgate.
X Take the emergenc ykey elemen tout of the
key (Y page 74).
i You will find details on the tailgate open-
ing dimensions in the Technical data sec-
tion (Y page 378). 82
Luggage compartmentOpenin
gand closing

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

i
Related topics:
R EASY-ENTRY/EXI Tfeature
(Y page 99)
R Storing setting s(Ypage 103) Steering whee
lheating
Activating/deactivating X
Mak esuret hat the key is in position 2in
th ei gnition lock.
X To switch on/off: turnthe lever in the
direction of arrow :or;.
Indicato rlamp =lights up or goes out.
Vehicles without KEYLESS-GO: when you
remove the key from the ignition ,the steering
wheel heating is switched off.
Vehicles with KEYL ESS-GO:when you switch
off the ignition and open the driver's door, the
steering wheel heating is switched off.
Problems wit hthe steering whee lheat-
ing The steering wheel heating has switched off
prematurely or cannot be switched on. The
vehicle's electrical system voltage is too low
because too many electrical consumer sare
switche don.
X Switch off electrical consumers which you
do not need ,such as the rear window heat-
ing or interior lighting. EASY-ENTRY/EXIT featu
re
Important safety notes The EASY-ENTRY/EXI
Tfeatur emakes getting
in and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature in the on-board com-
puter (Y page 251). G
WARNING
Make sure that nobody can become trapped
when you activate the EASY-ENTRY/EXI Tfea-
ture.
If there is arisk of someone becoming trap-
ped, stop the adjustment procedure. To halt
the procedure:
R press the steering column adjustment but-
ton.
R briefly press one of the memor yfunction
position buttons.
The steering column stops moving immedi-
ately.
Do not keep the memory function position
button presse ddown, otherwise the memory
function will star tand the steering wheel and
sea twill begin to move.
Never leave children unsupervised in the vehi-
cle. They could open the driver's door and
thereby unintentionally activate the EASY-
ENTRY featur eand become trapped.
Positio nofthe steering whee lwhen the
EAS Y-ENTRY/EXIT featur eisactive The steerin
gwheel tilt supwards if you:
R remove the key from the ignition lock
R open the driver' sdoor and KEYLESS -GOis
in position 1
R open the driver's door and the key is in
position 0or 1in the ignition lock
i The steerin gwheel only moves upwards if
it has not already reached the upper end
stop. Steering wheel
99Seats,steering wheeland mirror s Z

Position of th
esteerin gwheel for driv-
ing Th
es teering whee lismoved to the previously
set position if:
R the driver's door is closed.
R you inser tthe key int othe ignition lock.
or
R you press the Star t/Stop butto nonce on
vehicles with KEYLESS-GO.
If you clos ethe driver's door with the key
inserted int othe ignition lock ,the steering
wheel is automatically moved to the previ-
ously set position.
The last position of the steering wheel is
stored when you switc hoff th eignition or
when you stor ethe setti ngwith the memory
function (Y page 103).
Crash-responsive EASY-EXIT fea tureIf th
ecrash-resp onsive EASY-EXIT feature is
trig gere dinana ccident,the steeri ngcolu mn
will mov eupwards when the driv er'sdoor is
opened. This occurs irrespective of the posi-
tion of the key in the ignition lock .This makes
it easier to exit the vehicle and rescue the
occupants.
The crash-responsive EASY-EXIT featur eis
only operational if the EASY-EXIT/ENTRY fea-
tur eisa ctivate dinthe on-boar dcomputer. Mirrors
Rear-view mirror
Rear-view mirror (manua lanti- daz zle) X
Anti-dazzle mode: flick anti-dazzle
switch :forward sorback. Exterior mirrors
Adjusting the exterior mirrors G
WARNING
The exterior mirrors reduce the size of the
image. Objects are actually closer than they
appear. You could misjudge the distance from
vehicles driving behind and cause an acci-
dent, e.g. when changing lane. For this rea-
son, make sure of the actual distance from the
vehicle driving behind by glancing over your
shoulder.
The convex exterior mirrors provide alarger
field of vision.
The exterior mirrors are automatically heated
if the rear window heating is switched on and
the outside temperature is low. 100
MirrorsSeats
,steering wheel and mirrors