lights MERCEDES-BENZ M-CLASS SUV 2011 Repair Manual

The following system
sare switche doff when
th er adar senso rsystem is deactivated:
R DISTRONIC PLUS (Y page 174)
R BAS PLUS (Y page 62)
R PRE-SAFE ®
Brake (Y page 66)
R Blind Spot Assist (Y page 208)
R Active Blind Spot Assist (Y page 212)
X Press the =or; button on the steer-
ing whee ltoselect the Settings menu.
X Press the :or9 button to select the
Vehicle submenu.
X Press the abutton to confirm.
X Press the 9or: button to select
Rada rsensor (See Owner's Man.): .
Yo uw ill see the selected setting: on or
off .
X Press the abutton to save the setting.
Heating menu Auxiliary heating depa
rtur et ime
This function is only availa bleo nvehicles with
auxiliar yheatin g(Ypage 130).
In the Heating submenu, you can select a
stored departure tim eorchange adeparture
time.
The auxiliar yheatin gtimer func tion calcu-
lates the switch-on tim eaccording to the out-
sid etemperature so that the vehicle is pre-
heated by the departure time. When the
departure tim eisreached, the auxiliar yheat-
ing continues to heat for afurther five
minutes and then switches off. The auxiliary
heating adopts the THERMATI Cor
THERMOTRONI Ctemperature setting.
You can switc hoff th eauxiliary heating by
using the remote control or the auxiliary heat-
ing button on the centre console. G
WARNING
Exhaust fumes are produced when the auxili-
ary heating is in operation. Inhaling these
exhaust fumes can be poisonous. You should
therefore switch off the auxiliary heating in confined spaces without an extraction sys-
tem, e.g.
agarage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set
the vehicle alight. Choos eyour parkin gspot
accordingly.
Operating the auxiliary heating is thus pro-
hibited at fillin gstations or when your vehicle
is being refuelled .You must therefore switch
off the auxiliar yheatin gatf illing stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for alonger
distan ce.
i Switch the auxiliary heating on regularly
once amonthfor about 10 minutes.
Selecting th edepartur etime or deactivat-
ing aselected depa rtur et ime
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press the abutton to confirm.
You will see the selected setting.
X Press the abutton to confirm.
X Press the :or9 button to select
one of the three departur etimes or Timer off (no timer active).
X Press the abutton to confirm.
When adeparture tim eisselected, the yel-
low indicator lam plights up on the auxiliary
heating button. 250
Menus and submenusOn-board computer and displays

Changing th
edeparture time
X Pres sthe = or; button on th esteer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to selec tthe
Heating submenu.
X Press the abutton to confir m.
You will see the selected setting.
X Press the abutton to confirm.
X Press the :or9 button to select
Change A ,
B or
C .
X Press the abutton to confirm.
You can now change the departur etime.
X Press the =or; button to select the
displa ytobec hanged: hours, minutes.
X Press the :or9 button to set the
selected display.
X Press the abutton to stor ethe ent ry.
The yellow indicator lam ponthe auxiliary
heating button lights up.
Convenience Activating/deactivating th
eEASY-
ENTRY/EXIT featu re
You can use the Easy Entry/Exit: func
tion
to activate or deactivate the EAS YENTRY/
EXIT feature (Y page 99). G
WARNING
Th es teering whee lmoves when the EASY-
ENTRY/EXI Tfeatur eisa ctive. There is arisk
of occupant sbecoming trapped. Before acti-
vating the EASY-ENTRY/EXI Tfeature, make
sure that nobody can becom etrapped.
Do not leave children unsupervised in the
vehicle, eve nifthey ar esecured in achild
restraint system .The children coul dopen the
driver' sdoor and thereby unintentionally acti-
vat ethe EASY-ENTRY/EXI Tfeatur eand
become trapped.
X Pres sthe = or; button on the steer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to selec tthe
Convenience submenu.X
Press the abutton to confir m.
X Press the :or9 button to select the
Easy Entry/Exit: function.
You will see the selected setting: on or
off .
X Press the abutton to save the setting.
Switching th ebelt adjustment on/off
For further information on belt adjustment,
see (Y page 48).
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Convenience submenu.
X Press the abutton to confir m.
X Press the :or9 button to select the
Belt adjustment function.
You will see the selected setting: on or
off .
X Press the abutton to save the setting.
Switching th efold in mirrors when lock-
ing function on/off
If you switch on the Fold mirrors in when
locking func
tion, the exterior mirror sfold in
when you lock the vehicle. When you unlock
the vehicle and then open the driver's or
front-passenger door, the exterior mirrors
fold out again.
If you have switched the func tion on and you
fold the exterior mirror sinusing the button
on the door (Y page 101), they will not fold
out automatically. The exterior mirrors can
then only be folded out usin gthe button on
the door.
X Press the =or; button on the steer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to selec tthe
Convenience submenu.
X Press the abutton to confir m. Menus and submenus
251On-boardcomputer and display s Z

X
Press the :or9 to select the Fold mirror
sinwhen locking: function.
Yo uw ill see the selected setting: on or
off .
X Press the abutton to save the setting.
Resetting to factor ysettings For safety reasons
,not al lfunction sare reset:
the Limit speed (winter tyres) function
in permane ntSPEEDTRONI Ccan only be set
in the Vehicle submenu. If you want to reset
the Daytim edriving lights: fun
ction in
the Light submenu, you must tur
nthe key in
the ignition lock to position 1.
X Press the =or; button on the steer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to selec tthe
Factor ysetting submenu.
X Press the abuttontoc onfirm.
The Rese tall settings? message
appe ars.
X Pres sthe : or9 button to select
No or
Yes .
X Press the abutton to confir mthe selec-
tion.
If you select Yes ,t
he multifunction display
shows aconfirmation message. ON&OFFROAD menu
In the ON&OFFROAD menu, you can display the
curren tsettings of the on-road (Y page 218)
or off-road programm e(Ypage 222):
X Press the =or; button on the steer-
ing wheel to select the ON&OFFROAD menu.
Message in the multifunction display (example)252
Menus and submenusOn-board computer and displays

Safety systems
Display messages Possible causes/consequences and
M Solutions
!÷
currentl
yunavail‐ able See Owner's
Manual G
Ris
kofa ccident
ABS (Anti-lock Braking System), ESP ®
(Electronic Stability Pro-
gram), BAS (Brake Assist), PRE-SAFE ®
,t he HOL Dfunction, hill
start assis tand ESP ®
trailer stabilisation are temporarily not avail-
able.
The adaptive brake lights ,BAS PLUS and PRE-SAFE ®
Brake may
also have failed.
In addition, the ÷,åand! warning lamps ligh tupin
the instrument cluster.
The self-diagnosis function might not be complete ,for example.
ATTENTION ASSIS Tisdeactivated.
The brak esystem continues to function normally, but without the
functions liste dabove. The wheels could therefore lock if you
brak ehard, for example.
X Carefully drive on asuitable stretch of road, making slight steer-
ing movements, at aspeed above 20 km/h.
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit aqualified specialist workshop. G
Risk of accident
ABS ,ESP ®
,B AS ,PRE-SAFE ®
,t he HOL Dfunction, hill start assist
and ESP ®
trailer stabilisation are temporarily not available.
The adaptive brake lights ,BAS PLUS and PRE-SAFE ®
Brake may
also have failed.
In addition, the ÷,åand! warning lamps ligh tupin
the instrument cluster.
For example, the on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
The brake system continues to function normally, but without the
functions liste dabove. The wheels could therefore lock if you
brak ehard, for example.
X Drive on carefully.
If the display message disappears, the functions mentioned
above are available again. 254
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
If th
edisplay message continues to be displayed:
X Drive on carefully.
X Visit aqualified specialist workshop. !÷
in
operative See Owner'
sManual G
Risk of accident
ABS, ESP ®
,B AS ,PRE-SAFE ®
,t he HOL Dfunction ,hill start assist
and ESP ®
trailer stabilisation are no tavailab ledue to amalfunc-
tion.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
als oh ave failed.
In addition, the J,÷,åand! warning lamp slight
up in the instrument cluster.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefor elock if you
brake hard, for example.
ATTENTION ASSIS Tisd eactivated.
X Drive on carefully.
X Visit aquali fieds pecialist workshop immediately. ÷
currentl
yunavail‐ able See Owner's
Manual G
Ris
kofa ccident
ESP ®
,B AS, PRE- SAFE ®
,t he HOL Dfunction, hill start assis tand
ESP ®
trailer stabilisation are temporarily not available.
The adaptive brake lights ,BAS PLU Sand PRE-SAFE ®
Brak emay
also have failed.
In addition, the ÷andå warning lamps light up in the
instrument cluster.
The self-diagnosis function might not be complete, for example.
ATTENTION ASSIS Tisdeactivated.
The brak esystem continues to function normally, but without the
functions liste dabove.
X Carefull ydrive on asuitable stretc hofroad, makin gslight steer-
ing movements, at aspeed above 20 km/h.
If the display message disappears, the fun ction sm entioned
above are available again.
If the display message continues to be displayed:
X Driv eonc arefully.
X Visit aqualified specialist workshop. Display messages
255On-boardcomputer and displays Z

Displa
ymessages Possible causes/consequences and
M Solutions
÷
in
operative See Owner'
sManual G
Risk of accident
ESP ®
,B AS ,PRE-SAFE ®
,t he HOL Dfunction ,hill start assist and
ESP ®
trailer stabilisation are no tavailab ledue to amalfunction.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
als oh ave failed.
In addition, the ÷andå warning lamp slight up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
The brake system continues to function normally, but without the
functions listed above.
X Driv eonc arefully.
X Visi taq ualifieds pecialist workshop. T!
÷
inoperativ
eSee Owner'
sManual G
Ris
kofa ccident
EB D( electroni cbrake force dist ribution) ,ABS ,ESP ®
,B AS, PRE-
SAFE ®
,t he HOL Dfunction, hill start assist and ESP ®
trailer stabi-
lisation are not available due to amalfunction.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
als oh ave failed.
In addition, the ÷,åand! warning lamp slight up in
the instrument cluster and awarning tone sounds.
ATTENTION ASSIST is deactivated.
The brake system continue stofunction normally, but withou tthe
func tions listed above. The wheels coul dtherefore lock if you
brake hard, for example.
X Drive on carefully.
X Visit aqualified specialist worksho pimmediately. !
Release parking
brake Th
er ed ! indicator lam pflashes and awarning tone sounds.
Ac ondition for automatic release of the electric parkin gbrake is
not fulfill ed (Ypag e161).
Yo ua re driving wit hthe electric parkin gbrake appl ied.
X Release the electric parking brake manually. The red
!indicator lamp flashe sand aw arning tone sounds.
You are making an emergency stop using the electric parking
brake (Y page 161). 256
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
!
Pa
rkingb rake See Owner'
sManual Th
ey ellow !warning lamp lights up.
The electric parkin gbrak eism alfunctioning.
To apply:
X Switc hoffthe ignition.
X Press the electric parking brake handle fo ratleast 10 seconds.
X Shif tthe transmission to P.
X Consult aqualified specialist worksho p. The yellow
!warnin glamp and the red !indicator lamp
are lit.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignitio nand turn it back on.
X Releas ethe electric parkin gbrake manu ally.
or
X Release the electric parkin gbrake automatically (Y page 161).
If the yellow !warning lamp remains lit or continues to flash:
X Do not drive on.
X Consult aqualified specialist worksho p. The red
!indicator lam pflashes and the yellow !warning
lamp is lit.
The electric parkin gbrake is malfunctioning.
To rel ease:
X Switch off the ignitio nand turn it back on.
X Releas ethe electric parkin gbrake manu ally.
To apply:
X Switch off the ignitio nand turn it back on.
X Appl ythe electric parkin gbrake manu ally.
If the red !indicator lamp continues to flash:
X Do not drive on.
X Secur ethe vehicle against rolling away (Y page 338).
X Shif tthe transmission to P.
X Tur nthe front wheels towards the kerb.
X Consult aqualified specialist worksho p. Display messages
257On-boardcomputer and displays Z

Displa
ymessages Possible causes/consequences and
M Solutions
The yellow
!warning lamp lights up. The red !indicator
lamp flashes fo rabout 10 seconds after the electric parkin gbrake
ha sb een applied or released. It then goes out or remains lit.
The electric parkin gbrake is malfunctioning.
X Switch off th eignition and tur nitback on.
X Apply the electric parkin gbrake.
If it is not poss ible to apply the electric parkin gbrake:
X Shift th etransmission to P.
X Vis itaq uali fieds pecialist workshop.
If it is not possible to release the electric parkin gbrake:
X Releas ethe elec tricp arkin gbrake automaticall y(Ypage 16 1).
If th eelectric parkin gbrake can stil lnot be released:
X Consult aqualified specialist workshop. The yellow
!warning lamp lights up. If you manually apply or
release the electric parkin gbrake ,the red !indicator lamp
fla shes.
The electric parking brak eismalfunctioning. It is not poss ible to
apply the electric parking brake manu ally.
X Shift the transmission to P.
X Visit aquali fieds pecialist workshop. !
Pk
gb rake inopera‐ tive Th
ey ellow !warning lam plights up. The red !indicator
lamp flashes for about 10 seconds after the electric parkin gbrake
ha sb een applied or released. It then goes out or remains lit.
The electric parkin gbrake is malfunctioning ,e.g. because of over-
voltag eorundervoltage.
X Remove the cause for the overvoltage or undervoltage ,e.g. by
charging the battery or restarting the engine.
X Appl yorr elease the electric parkin gbrake.
If it remains impossibl etoapply or release the electric parking
brake:
X Swit choff the ignition and tur nitback on.
X Apply or release the electric parkin gbrake.
If th eelectric parkin gbrake can stil lnot be released:
X Consult aqualified specialist workshop. 258
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
The display message is only shown while th
evehicl eisinm otion.
The red !indicato rlamp flashes and the yellow !warning
lamp is lit.
It is not possible to apply the electric parkin gbrake manually.
X Shift th etransmission to P.
X Visit aqualified specialist workshop. !
Turn on th
eigni‐ tion to release
the parking brake Th
er ed ! indicator lam pislit.
You attempted to release the electric parkin gbrake whil ethe igni-
tion was switched off.
X Key: turnthe key to position 1in the ignition lock.
X KEYLESS-GO: switchont he ignition. J
Chec
kbrake fluid level G
Ris
kofa ccident
There is insufficien tbrake flui dinthe brake flu idreservo ir.Ina ddi-
tion, the red Jwarning lamp in the instrumen tcluster lights
up and awarning tone sounds.
X Pul lover and stop th evehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv ing
under any circumstances.
X Apply the electric parking brake.
X Consult aqualified specialist worksho p.
X Do not top up the brake fluid. Thi sdoes not correc tthe error. #
Chec
kbrake wear Th
eb rake pa ds/linings have reach edtheir wea rlimit.
X Visit aqualified specialist workshop. PRE-SAFE
inoperativ
eSee Owner's Manual G
Ris
kofi njury
Impor tant functions of PRE-SAFE ®
have failed. All other occupant
safety sys tems,e.g. airbags, remain available.
X Visit aqualified specialist worksho pimmediately. Display mess
ages
259On-boa rd comp uter and displays Z

Displa
ymessages Possible causes/consequences and
M Solutions
Ch
ilds eatin wrong position
See Owner'
sManual G
Risk of in
jury
Vehicles with automatic child seat recognition on the front-
passenge rseat: the child seat is positioned incorrectly.
X Fit the child seat in the correc tposition. G
Risk of injury
Vehicles with automatic child seat recognition on the front-
passenger seat: the automatic child seat recognition sensor is
faulty.
X Visit aqualified specialist workshop. 6
Restraint
sys. mal‐
function Consult
workshop G
Risk of injury
There is amalfunction in the SRS (Supplemental Restraint Sys-
tem). The 6warning lamp also lights up in the instrumen tclus-
ter.
X Visit aqualified specialist workshop. 6
Front
left malfunc‐
tion Consul
twork‐ shop or
Front right malfunction Con‐
sult workshop G
Ris
kofi njury
SRS has malfunctioned at the fronton the left or right. The 6
warning lamp also lights up in the instrument cluster.
X Visi taq ualifieds pecialist workshop. 6
Rear left malfunc‐
tion Consul
twork‐ shop or
Rear right malfunction Con‐
sult workshop G
Ris
kofi njury
SRS has malfunctioned at the rear on the left or right .The 6
warnin glamp also lights up in the instrument cluster.
X Visit aqualified specialist workshop. Display messages
261On-boardcomputer and displays Z