2011 MERCEDES-BENZ M-CLASS SUV warning light

Fitting th
ewiper blades
X Positio nthe new wiper blade in the retainer
on the wiper ar mand slide it into place in
the opposite direction to the arrow.
The wipe rblade audibly engages.
X Make sure that wiper blade is seated cor-
rectly.
X Fold the wiper arm back onto the wind-
screen.
Replacing the rear window wiper blade Removing the wiper blade
G
WARNING
The wiper arm could be set in motion and
injur eyou if the windscreen wiper sare
switched on.
Remove th ekey from the ignition lock before
replacing the wiper blade. X
Remov ethe key from the ignition lock.
X Fold wiper arm :away from the rea rwin-
dow until it engages.
X Position wiper blade ;atar ight angle to
wiper arm :.
X Hold wiper arm :and press wiper
blade ;in the direction of the arrow until
it releases.
X Remove wiper blade ;. Fitting the wiper blade
X
Place new wiper blade ;onto wiper
arm :.
X Hold wiper arm :and press wiper
blade ;in the opposite direction to the
arrow until it engages.
X Make sure that wiper blade ;is seated
correctly.
X Position wiper blade ;parallel to wiper
arm :.
X Fold wiper arm :back onto the rear win-
dow. Problems with the windscreen wipers
The windscreen wipers are obstructed Leaves or snow, for example, may be
obstructing the windscreen wiper movement.
The wiper motor has been deactivated.
X
For safety reasons, you should remov ethe
key from the ignition lock.
or
X Switc hoff th eengine using the Start/Stop
butto nand ope nthe driver's door.
X Remove the cause of the obstruction.
X Switc hthe windscreen wiper sback on.
The windscreen wipers are inoperative The windscreen wiper drive is malfunctioning.
X
Select another wiper spee donthe combi-
nation switch.
X Hav ethe windscreen wiper schecked at a
qualified specialist workshop.
Th es pra ynozzles are misaligned The windscreen washer fluid from the spray
nozzles no longer hits the centre of the wind-
screen. The spray nozzles are misaligned.
X Have the spray nozzles adjusted at aquali-
fied specialist workshop. 118
Windscreen wipersLights and windscreen wipers

Q
Switche srear-com partment climate contro lon/of f(Y page 124)
R Reduces the airflow (Y page 127)Notes on using THERMOTRONIC auto-
matic climat econtrol
The following contains notes and recommen-
dations on optimum operation of
THERMO TRONIC automatic climate contro l.
R Activate climate control using the Ãand
¿ buttons .The indicator lamps in the
à and¿ buttons light up.
R In automatic mode, you can also use the
ñ button to set aclimate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIU Mlevel is rec ommended.
R Set th etemperature to 22 †.
R Only use the demisting function briefly,
unt ilthe windscreen is clear again.
R Only us ethe air-recircu lation mod ebriefly,
e.g .ift here ar eunpleasant outsid eodours
or when in atunnel. The window scould
otherwise mist up as ,inair-recirculation
mode, no fresh air is drawn int othe vehicle.
R Use the ZON Efunction to adopt the tem-
perature settings on the driver' sside for
the front-passenger side and the rear com-
partment as well. The indicator lamp in the
á button goes out.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The resid-
ual heat function can only be activated or
deactivated with the ignition switched off. Operating the climat
econtrol system Switching climat
econtrol on/off
Importan tinfor mation i
Whe nclimate contro lisswitched off, the
air supply and air circulation are also
switched off. Only select this setting briefly. Otherwise, the windows may mist
up.
i Switc honc limatecontr ol primaril yusing
the à button( Ypage 12 5).
In th erear compartmen t,you can also switch
climat econtr olon and off using the Ãand
^ buttons.
Switching on/off X
Tur nthe key to position 2in the igni tion
lock.
X To switch on: press theÃbutton.
The indicator lam pintheà button lights
up. Air flow and air distribution ar eset to
automatic mode.
or
X Press button ^.
The indicator lam pinthe^ button goes
out. The previously selec teds ettings come
int oe ffect again.
X To switch off: press the^button.
Th eindicator lamp in the ^button lights
up. Activating/deactiv
ating the cooling
with air deh umidification function
Importan tinfor mation The cooling with air dehumidification function
is only availabl
ewhen the engin eisrunning.
The air inside the vehicle is cooled and dehu-
midified according to the temperature selec-
ted. G
WARNING
If the "cooling with air dehumidification" func-
tion is deactivated, the air inside the vehicle
will not be cooled (during warm weather) or
dehumidified. The windows could mist up 124
Operating th
eclimat econtrol systemClimat econtrol

X
Tur ncontrols :orB cloc kwise or anti-
clockwise (Y page 121), (Y page 121).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the ¿/Ácooling with air
dehumidification func tion.
X Activate automatic mode Ã.
X If the window scontinue to mist up, activa te
the demisting function (Y page 127).
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Press the _button repeatedly until the
P orO symbol appears in the dis-
play.
i You should only select this setting until
the windscreen is clear again. Rear window heating
Switchin gon/off G
WARNI
NG
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The rear window heating has ahigh cur rent
draw. You should therefore switc hitoff as
soon as th ewindow is clear ,Ito therwise
switches off automatically after several
minutes.
If the battery voltage is too low, the rear win-
dow heati ngmay switch off. X
Turn th ekey to position 2in the ignition
lock.
X Press the ¤button.
The indicator lam pinthe¤ button lights
up or goes out.
Problems wit hthe rea rwindow hea ting The rea
rwindow heatin ghas switched off
prematurely or cannot be activated.
X Switch off any consumers that are not
required, e.g. readin glamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heatin gisactivated again
automatically. Activating/deactivating air-recircula-
tion mode
You can deactivate the flow of fresh air if
unpleasant odours are entering the vehicle
from outside .The air already insid ethe vehi-
cle will then be recirculated.
The operation of air-recirculation mode is the
sam efor all contr ol panels. G
WARNING
Only swit chover to air-recirculation mode
briefly at low outside temperatures. Other-
wise, the window scould mist up, thus impair-
ing visibility and endan geringyoursel fand
othe rs.T his ma ypreve ntyou from observing
the traffic conditions, thereby causing an
accident.
X Turn the key to position 2in the ignition
lock.
X To activate: press thedbutton.
The indicator lam pint he d button lights
up.
i In the even tofhigh pollution levels 12
or at
high outside temperatures, air-recircula-
tion mode is automatically activated. When
air-recirculation mode is activated auto-
12 THERMOTRONIC automatic climate control only. 128
Operating the climate control systemClimate control

matically
,the indicator lam pint he d
button is not lit.
Outside air is added after about 30
minutes.
X To switch off: press thedbutton.
The indicator lam pint he d button goes
out.
i Air-recirculation mode deactivates auto-
matically:
R after approximately fiv eminutes at out-
side temperatures below approximately
5†
R after approximately five minutes if cool-
ing with air dehumidification is deactiva-
ted
R after approximately 30 minutes at out-
sid etemperatures above approximately
5†
R if you press the ¿/Ábutton and
switch on cooling with air dehumidifica-
tion Convenienc
eopening/closin gusing
th ea ir-recirculation button G
WARNING
Make sure that nobody can become trapped
between the side window and the door frame
as the side windows are opened and closed.
Make sure that all object sand bod yparts are
clear of the side windows when they are being
opened or closed. You or the objects could be
drawn in or become trapped between the side
window and the door fram easthe window
moves. If ther eisariskofe ntrapment, oper-
ate the Wswitchto move the side window
in the opposite direction.
Make sure that nobody can become trapped
as the sliding sunroof/panorama sliding sun-
roof is ope neda nd closed. If there is arisk of
entrapment, operat ethe 3 switchtom ove
the sliding sunroof/panorama sliding sunroof
in the opposit edirection. X
Convenience closing feature: press and
hold the dbutton until the side win-
dows and the sliding sunroof/panorama
sliding sunroof are closed.
The indicator lamp in the dbutton lights
up. Air-recirculation mode is activated.
X Convenience opening feature: press and
hold the dbutton until the side win-
dows and the sliding sunroof/panorama
sliding sunroof are opened. The side win-
dows and the sliding sunroof/panorama
sliding sunroof move back to their original
position.
The indicator lamp in the dbutton goes
out. Air-recirculation mode is deactivated.
i If you open the side windows or the sliding
sunroof/panorama sliding sunroof man-
ually after closin gthemw ith the conveni-
enc eclosing feature, they will remain in this
position when opened using the conveni-
enc eopening feature. Activating/deact
ivatingthe residual
heat function
It is possibl etomakeu se of the residual heat
of the engine to continue heatin gthe station-
ar yv ehicle for up to 30 minutes after the
engine has been switched off .The heating
tim edepends on the temperature that has
been set.
i The blower will run at alow speed regard-
less of the airflow setting.
i If you activate the residual heat func tion
at high temperatures, only the ven tilation
will be activated. The blower runs at
medium speed.
X Turn the key to position 0in the ignition
lock or remov eit.
X To activate: press theÌ/Á button.
The indicato rlamp in the Ì/Á but-
ton lights up. Operating the climate control system
129Climate control Z

X
Remov eStart/Stop button :from ig nition
lock ;.
i When you insert Star t/Stopbutton:
int oignition lock ;,thesystem needs
approximately two seconds recognition
time before you ca nuse Star t/Stop but-
ton :. Startin
gthe engine
Important safety notes G
WARNING
Never leav ethe engin erunnin ginenclosed
spaces. The exhaust gase scontai ncarbon
monoxide. Inhalin gexhaust fumes consti-
tutes ahealt hhazard and could lead to loss
of consciousness or eve ndeath.
i Vehicles with apetrol engine: the cata-
lytic conver terp reheats for up to 30 sec-
ond safter acold star t.The sound of the
engin emay change during this time.
Automatic transmission X
Shift the transmission to position P.
The transmission position displ ay inthe
multifunction displa yshows P
(Y page 146).
i You can also star tthe engin ewhen the
transmission is in position N.Sta
rting procedur ewith the key X
To star tapetrol engine: turn the key to
position 3in the ignition lock
(Y page 139 )and releas eita ss oon as the
engin eisrunning.
X To star tadiesel engine: turn the key to
position 2in the ignition lock
(Y page 13 9).
The % preglow indicator lam pinthe
instrumen tcluster lights up.
X When the %preglow indicator lamp
goes out, tur nthe key to position 3
(Y page 139) and release it as soon as the
engin eisrunning.
i You can start the engine without preglow
if the engine is warm.
i You can also use the touch-star tfunction.
To do this, turn the key to position 3
(Y page 139 )and releas eitimmediately.
Th ee ngine then starts automatically.
Using KEYLESS-GO to start the engine G
WARNING
You rvehicle can be star tedu sing avalid KEY-
LESS-GO key. For this reason, children should
never be left unsupervised in the vehicle.
Always take the key with you when leaving the
vehicle, even if you are only leaving it for a
short time.
i The Start/Stop button can be used to
start the vehicle without inserting the key
into the ignition lock. The key must be in
the vehicle and the Start/Stop button must
be inserted in the ignition lock. This mode
for starting the engine operates independ-
ently of the ECO start/stop automatic
engine start function. 140
DrivingDrivin
gand parking

Problem Possible causes/consequences and
M Solutions
Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or in amechanical
componen tofthe engin emanagement system.
X Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at aqualified specialist
workshop, e.g. aMercedes-Benz Servic eCentre.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. The coolan
ttempera-
tur ed isplay is showing
more than 120 †. The
coolant warnin glamp
may also be on and a
warning tone may
sound. The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 321). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct
,the radiator fa nmay be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X At coolant temperatures under 120 †, drive on to the nearest
qualified specialis tworkshop, e.g. to aMercedes-Benz Service
Centre.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop-start traffic. Automa
tict ransmission Important safety notes
G
WARNING
The movement of the pedal smust not be
impaired in any way. Do not keep any objects
in the driver's footwell. Make sure that floor-
mats or carpets are correctly secured and
that there is sufficient clearance for the ped-
als.
Do not place several floormats on top of one
another. G
WARNING
Do not change down for additional engine
braking on aslippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid. This could cause you to lose control of your vehicle and cause an
accident. DIRECT SELECT lever
Overview of transmissio npositions The DIRECT SELECT leve
risonthe right of the
steering column. Automa
tict ran smission
145Drivingand park ing Z

G
WARNING
Make sure tha tother road user sare not
endang ered by your braking.
Downhill gradients On long and steep downhill gradients, espe-
cially if the vehicle is laden or towing
atrailer,
yo um ust select shift range 1,2or 3in good
time.
i This als oapplies if you have activated
cruise control, SPEEDTRONIC or DIS-
TRONIC PLUS.
This will use the braking effect of the engine,
so less braking will be required to maintain
the speed. This relieves the load on the brake
system and prevents the brakes from over-
heating and wearing too quickly.
Heavy and light loads G
WARNING
Never depress the brak epeda lconti nuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by apply ingc onstant slight
pedal pressure. This causes the brake system
to overheat, increases the brakin gdistance
and can lead to the brakes failing completely.
If the brakes have been subjected to aheavy
load, do not stop the vehicle immediately ,but
drive on for ashort while. This allow sthe air-
flo wtoc ool the brakes mor equickly.
If the brakes have been used only moderately,
you should occasionally test their effective-
ness. To do this, brake more firmly from a
higher speed. This improves the grip of the
brakes.
Wet road surface If driving in heavy rain for
aprolonged period
of time without braking, there may be a
delayed reaction from th ebrake swhen brak-
ing for the first time. This ma yalso occur after
the vehicle has been washed. You have to depress the brake pedal more
firmly. Maintain
agreater distance from the
vehicl einfront.
After driving on awet road or havin gthe vehi-
cle washed, brake firml ywhile paying atten-
tion to the traffic conditions. This will warm
up the brake discs, thereby drying them more
quickly and protectin gthem against corro-
sion.
Limited braking perfo rmance on salt-
treated roads G
WARNING
The layer of salt on the brake discs and the
brake pads/linings may cause adelay in the
braking effect ,resultin ginas ignifican tlyl on-
ger brakin gdistance, which could lead to an
accident.
To avoid this danger, you should:
R occasionally brake carefully, without put-
ting other road users at risk, when you are
drivin gons alted roads. This helps to
remove any salt that may have started to
build up on the brake discs and the brake
pads/linings.
R maintain agreater distance to th evehicle
ahead and driv ewith particular care.
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new trip, so that salt residues are removed
from the brake discs.
New brake pads/linin gs G
WARNING
New brak epads/linings only reach their opti-
mum braking effect after several hundred kil-
ometres of driving. Before this optimum brak-
ing effect is reached, you shoul dcompensate
for the reduced brakin geffect by applying
greate rpressure when braking .This also
applies after the brake discs or the brake
pads/linings hav ebeen replaced.
For safety reasons, Mercedes-Benz recom-
mends that you only have brak epads/linings Driving tips
163Drivingand parking Z

!
The depth of water must not exceed the
value specified in the table. Not ethat the
possible fording depth is less in flowing
water.
R Establish how deep the water is and the
characteristic softhe body of water before
fording.
R Select the highest possible vehicle level.
R Restrict the shift range to 1or 2.
R Avoid high engin espeeds.
R Enter and exit the water at aflat place and
at as teady walking pace.
! Under no circumstances should you
accelerate before entering the water. The
bow wave could cause water to enter and
damage the engine and neighbouring
assemblies.
R Drive slowl yand at aconstant speed
through the water.
R Do not stop.
! Do not open any of the vehicle' sdoors
while fording. Otherwise, wate rcould get
int ot he vehicle interior and damage the
vehicle' selectronics and interior equip-
ment.
R Water offer sahigh degree of resistance,
and the ground is slippery and in some
cases unstable. Therefore, it is difficult and
dangerous to pull away in the water.
R Ensure that abow wav edoes not for mas
you drive.
R Clea nany mud from the tyre tread after
fording.
R Appl ythe brakes to dry them after fording. Winter driving
Genera lnotes G
WARNING
If the vehicle becomes trapped in snow,
ensure that snow is kept away from the
exhaust pipe and from around the vehicle as long as the engine is running. Otherwise, poi-
sonous carbon monoxide (CO) may enter the
vehicle, resulting in loss of consciousness and
even death.
To assure sufficient fresh air ventilation, open
aw indow slightly on the side of the vehicle
not facin gthe wind.
At the onset of winter, have your vehicle win-
terproofed at aqualified special istworkshop,
e.g. at aMercedes-Ben zService Centre.
Vehicles with the ON&OFFROAD package: if
driving in snow or with snow chains, select
the snow program (Y page 219) with the off-
road program selector wheel in the centre
console.
Driving with summer tyres Observ
ethe notes in the "Winter operation"
section (Y page 357).
Slippery roa dsurfaces G
WARNING
Do not shift down for additiona lengine brak-
ing on aslippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position N.
X Try to bring the vehicle under control by
using corrective steering.
i For more information on drivin gwith
snow chains, see (Y page 358). Drivin
gtips
165Driving and park ing Z