2011 MERCEDES-BENZ M-CLASS SUV bonnet

erator pedal, the engin
estart sautomati-
cally and the brakin geffect of th eHOLD
function is deactivated. Depress the accel-
erator pedal carefully ,asthe engin emust
be started first.
Automatic engin estart The engi
neis started automatically if:
R you depress the accelerator pedal.
R you release the brakes when in transmis-
sion position Dor N,w hen the HOL Dfunc-
tion is not active.
R the ECO start/stop function is deactivated
by pressing the ECO button.
R the vehicle start storoll.
R the driver's seat belt is removed or the driv-
er' sd oor is opened.
R you shift the transmission to position R.
R you switc htodrive program M.
R yo us witch to an off-road program.
R the brake system requires this.
R the system detect smoistur eont he wind-
screen when the air-conditionin gsystem is
switched on.
R the battery' scharge status is too low.
R the bonnet is opened.
R the temperature in the vehicle interior devi-
ates from the set range.
i Shif ting the transmissio ntoposition P
does not star tthe engine.
Deactiva ting/activa ting th eECO start/
stop function X
To deactivate: press button:.
Indicator lamp ;and the ¤ECO sym-
bol in the multifunction display go out.
X To activate: press button :.
Indicator lamp ;lights up and the ¤
ECO symbol is shown in the multifunction
display.
If not all conditions are fulfilled, the ¤
ECO symbol is not shown in the multifunc-
tion display. If this is the case, the ECO
start/stop function is not available.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of amalfunction. The engine will
then not be switched off automatically when
the vehicle stops.
i The ECO start/stop function is activated
each time the engine is switched on. Driving
143Drivingand parking Z

Displa
ymessages Possible causes/consequences and
M Solutions
# The battery is no
tbeing charged.
Aw arning ton ealso sounds.
Possible causes:
R fault yalternator
R torn poly-V-belt
R am alfunction in th eelectronics
X Stop th evehicle immediately, payin gattentio ntoroad and traf-
fic conditions, and switc hoff th eengine.
X Ope nthe bonnet.
X Chec kwhether the poly-V-belt is tor n.
If the poly-V -belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult aqualified specialist workshop.
If the poly-V-belt is OK:
X Visit aqualified specialist workshop. 4
Chec
keng. oil lev. when next
refuelling Th
eo il level has dropped to the minimum level.
Aw arning ton ealso sounds.
X Chec kthe oil level, at the latest when nex trefuelling
(Y page 320).
X If necessary, top up the engine oil (Y page 320).
X Hav ethe engin echecked at aqualified specialist worksho pif
the engine oil needs topping up more often than usual. 8
Reserv
efuel level Th
ef uel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated when the fuel level
drops into the reserve range.
X Refuel at the nearest filling station. C There is only
avery small amount of fuel in the fuel tank.
The auxiliary heatin gcannot be operated.
X Refuel at the nearest filling station without fail. ¸
Replace
air cleaner Vehicles with
adiesel engine: the engine air filter is dirty and must
be replaced.
X Visit aqualified specialist workshop. Display messages
267On-boardcomputer and displays Z

Displa
ymessages Possible causes/consequences and
M Solutions
? G
Risk of acc
ident
The bonne tisopen. Awarning ton ealso sounds.
X Pull ove rand sto pthe vehicle safel yassoonasp ossible, paying
attention to roa dand traffic conditions.
X Appl ythe electric parkin gbrake.
X Close th ebonnet. Active bonnet mal‐
function Se
eOwn‐ er's Manual Th
ea ctive bonnet (pedestrian protection) is not active due to a
malfunction or because it has already bee ntriggered
(Y page 318).
X Visit aqualified special istworkshop. C At least one door is open.
Awarning ton ealso sounds.
X Close all doors. D
Po
wer steering mal‐
function See Own‐
er'
sM anual G
Risk of accident
Th ep ower steering assistance is faulty.
You will nee dtouse mor eforce to steer.
Aw arning ton ealso sounds.
X Chec kwhether you ar eable to apply the extr aforc erequired.
X If you are able to steer safely: carefully driveontoaqualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop. &
inoperativ eBat‐ tery low Yo
uh ave attempted to switch on the auxiliary heating or to acti-
vate adeparture tim eusing the on-boar dcomputer after operating
the auxiliary heatin gtwice.
X Let the engine run for 10 seconds.
The auxiliary heating is operational again. The on-board voltage is too low. The auxiliary heating has switched
itself off or cannot be switched on (Y
page 130).
X Driv efor alonger distance.
The battery is being charged. The auxiliary heatin gisoperational
again as soon as the on-boar delectrical system voltage is suf-
ficient. &
inoperative
Refuel
vehicle The fuel level in the fuel tank is too low. The auxiliary heating can-
not be switched on (Y page 130).
X Refuel at the nearest filling station. Display messages
281On-boardcomputer and displays 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).Engine compartment
Bonnet
Active bonnet (pedestrian protection) Operating principle
i The active bonnet is only available in cer-
tai nc ountries.
The active bonnet can reduce the risk of injury
to pedestrians in certain accident situations.
Raising the active bonnet increases the clear-
anc etoh ard components, such as the engine.
If the active bonnet has been triggered, it is
raised in the area of the bonnet hinges by
abou t100 mm. Th eactive bonnet is trigg ered
by pyrotechnics.
! Once triggered, an active bonnet must be
reset at aqualified specialist workshop,
e.g. aMercedes-Ben zService Centre. The
active bonnet function will then be availa-
ble again. The additional pedestrian pro-
tection provided by the active bonnet will
then be restored.
For the driv etot he workshop, reset the trig-
gere dactive bonnet yourself. After being
reset, the active bonnet rest sinthe area of
the bonnet hinges on the seals, and the bon-
net hinges do not engage. For this reason, we
recommend that you do not exceed amaxi-
mum top spee dof130 km/h on the wa ytothe workshop
.Ifthe active bonnet has been
triggered, pedestrian protection ma ybelimi-
ted.
Resetting G
WARNING
There is arisk of injur yifthe bonnet is open,
even if the engin eisnot running.
Som eengine compone ntsc an become very
hot.
To avoid the risk of burns, only touch those
component sdescribed in the Owner's Manual
and observ ethe relevant safety notes. X
With your hand fla tnear the bonnet hinges
(arrows), push down active bonnet :until
it rests on the seals. G
WARNING
Make sure that nobody can becom etrapped
as you close th ebonnet.
Opening th ebonnet G
WARNING
Do not pull the release lever while the vehicle
is in motion. If you do so, the bonnet may open
up and block your view. G
WARNING
There is arisk of injur yifthe bonnet is open,
even if the engin eisnot running.
Som eengine compone ntsc an become very
hot. 318
Eng
inecompartmentMaintenance and care

To avoi
dthe risk of burns, only touc hthose
component sdescribed in the Owner's Manual
and observ ethe relevant safety notes. G
WARNING
The radiator fa nbetween the radiator and the
engine can star tautomatically, even if the key
has been removed from the ignition lock. For
this reason, you must not reach into the fan
rotation area. You could otherwis ebeinjured.
Vehicles with apetrol engine: The elec-
tronic ignition system uses high voltage. For
this reason ,you must never touc hignition
system component s(ignition coil, ignition
cables, spark plug connectors or test socket)
while:
R the engine is running
R the engine is being started
R the ignition is switched on and the engine
is being cranked by hand
You could otherwise suffer an electric shock
and be seriously or even fatally injured.
Vehicles with adiesel engine: The elec-
tronic injection control uses high voltage. For
this reason ,you must never touc hinjection
system components while:
R the engi neis running
R the engin eisbeing started
R the ignition is switched on
You could otherwise suffer an electric shock
and be seriously or even fatally injured.
X Make sure that the windscreen wipers are
switched off. G
WAR
NING
The winds creen wipers and wiper linkage
could be set in motion.
When the bonnet is open, you or others could
be injured by the wiper linkage.
Make sure that the windscreen wipers are
switched off .Remov ethe key or make sure
that no ignition position has been selected
with KEYLESS-GO. All indi cator lamps must be
off in the instrumen tpanel. X
Pull release lever :on the bonnet.
The bonnet is released.
! Make sure that the windscreen wipers are
not folded away from the windscreen. Oth-
er wise ,you could damage the windscreen
wipers or the bonnet. X
Reach into the gap, pull bonnet catc hhan-
dle ;up and lift the bonnet.
If yo uliftt he bonnet by approximat ely
40 cm, the bonne tisopeneda nd held open
automaticall ybythe gas-f illeds trut.
Closin gthe bonnet G
WARNING
Make sure tha tnobody can becom etrapped
as you close th ebonnet. Engine compa
rtment
319Maintena nceand care Z

X
Lower th ebonnet and let it fal lfrom a
heig ht of approx imately 20 cm.
X Check that the bonnet has engaged prop-
erly.
If the bonnet can be raised slightly, it is not
properly engaged. Open it again and close
it with alittle more force. Radiator
i Vehicles with diesel engine: do not
cover the radiator .Don ot use thermal
mats, insec tprotectio ncover sora nything
similar. Doing so can cause the Onboard
Diagnosti csSystem to display inaccurate
values .Some of these values ar elegally
required and must be cor rect. Engine oil
Notes on the oil level Depending on driving style, the vehicle con-
sume samaximum of 0.8 loil per 100 0km.
Th eo il consumption may be higher than this
when the vehicle is new or if you frequently
drive at high engin espeeds.
Checking the oil level using the oil dip-
stick Example: vehicles with
apetro lengine Example: vehicle
swithadiesel engine
X Park the vehicle on alevel surface.
To chec kthe oil level with the engin eat
normal operating temperature, switch the
engine off and wait for approximately five
minutes.
X Pull oil dipstick :out of the oil dipstick
tube.
X Wip eoff oi ldipstick :.
X Slowly slide oil dipstick :into the guide
tube to the stop, and take it out again.
If the level is between MIN mark =and
MAX mark ;,the oil level is correc t.
X If th eoil level has dropped to MIN mark
= or below it, top up with
0.5 to 1.0 litres of engine oil.
Adding engine oil G
WARNING
If engine oil comes into contact with hot
engine parts, it may ignite and you could burn
yourself .Donot spill any engin eoil on hot
engine parts. H
Environmental note
When topping up the oil, take care not to spill
any. If oil enters the soil or waterways, it is
harmful to the environment.
! Do not add too much oil. If the oil level is
above the "max" mar konthe dipstick ,too
much oil has been added. This can lead to
damage to the engin eorthe catalytic con-
verter .Have excess oil siphoned off. 320
Eng
inecompartmentMaintenance and care

X
Switch off al lelec trical consumers (e.g.
radio ,blow er, etc.).
X Connec tthe positive terminal clamp and
secure the cov er.
X Connect the negative terminal clamp.
i If the power supply ha sbeeninterrupted,
e.g. if yo ureconnect the battery, you will
have to:
R set the clock; see the separate operat ing
instructions.
R rese tthe function for automatically fold-
ing the exterior mirror sin/out by foldi ng
the mirrors out onc e(Ypage 10 1). Charging th
ebattery G
WARNING
Onl ycharge the battery in awell-ventilated
area .Ast he battery is being charged, gases
can escap eand generat eminor explosions.
This could injure you and other person sor
caus edamage to the paintwork or acid cor-
rosion on the vehicle.
You can obtain information about battery
chargers which allow the batter ytobe
charged while still installed from aqualified
specialist workshop ,e.g. aM ercedes-Benz
Ser vice Centre. G
WARNING
There is arisk of acid burns during the charg-
ing process due to the gases which escape
from the battery. Do not lean over the battery
during the chargin gprocess. G
WARNING
Battery aci discaustic. Avoid contact with the
skin, eyes or clothing.
! Only charge the installed batter ywith a
batter ycharger whic hhas been tested and
approved by Mercedes -Benz .These battery
chargers allow the battery to be charged
while still installed. !
Only use battery chargers with amaxi-
mum charging voltage of 14.8 V.
! Only charge the battery using the jump-
start connection point.
The jump-starting connection point is in the
engine compartmen t(Ypage 348).
X Open the bonnet (Y page 318).
X Connec tthe battery charger to the positive
terminal and earth point in the sam eorder
as when connecting th edonor battery in
the jump-startin gprocedure
(Y page 348).
X Read th ebattery charger's operating
instructions before charging the battery. Battery
347Breakdown assistanc e Z

X
Switch off al lelec trical consumers (e.g. radio ,blow er, etc.).
X Ope nthe bonnet (Y page 318). Position number
Bidentifies the charged battery of the other vehicle or an equivalent jump-
startin gdevice.
X Slide cover :of positiv eterminal ;in the direction of the arrow.
X Connect positiv eterminal ;on your vehicle to positiv eterminal =of donor battery B
using the jum plead, beginning with your own battery.
X Start the engine of the donor vehicle and run it at idling speed.
X Connect negative terminal ?of donor battery Bto eart hpoint Aof your vehicle using
the jum plead, connectin gthe jum plead to donor battery Bfirst.
X Start the engine.
X Allow the engine to run for afew minutes befor edisconnecting the jump lead.
X First, remov ethe jum plead from eart hpoint Aand negative terminal ?,then from positive
terminal ;and positive terminal =,each time disconnecting from the contacts on your
own vehicle first.
X After removing the jump lead, close cover :on positive terminal ;.
X Have the battery checked at aqualified specialist workshop, e.g. aMercedes-Ben zService
Cent re.T he jump-star ting procedure is not astandard operatin gstate; therefore, have the
battery checked. Towing and tow-starting
Important safet
ynotes
Observe the legal requirements for the rele-
vant countries when towing. G
WARNING
If you tow the vehicle, you must use arigid
towing bar if: Towing and tow-starting
349Breakdown assis tance
Z