ECU MERCEDES-BENZ M-CLASS SUV 2011 User Guide

:
Securing rings
X Install the ISOFIX child restraint system.
Compl ywitht he manufact urer's instruc-
tions when installing the ISOFI Xchild
restra ints ystem.
Top Tether Top Tether provides an additiona
lconnection
between the child restra ints ystem se cured
with ISOFIX and the rea rseat. It helps reduce
the risk of injury even further.
The Top Tether anchorages are located on the
rear side of the rear seat back rests. X
Move head restraint =upwards.
X Fit the ISOFIX chil drestraint system with
Top Tether .Compl ywith the manufactur-
er' sinstallatio ninstructions whe ndoing so.
X Rout eTop Tether belt Bunder head
rest raint = between the two head restraint
bars.
X Guide Top Tether belt Bdownwards
between luggage compar tment cover:
and rear seat backrest ;.
X Hook Top Tethe rhook Aof Top Tether belt
B intoT op Tether anchorage ?.
Ensure that:
R Top Tether hook Ais hooked int oTop
Tether anchorage ?as shown.
R Top Tether belt Bis not twisted.
R Top Tether belt Bis routed between rear
seat backrest ;and luggage compart-
men tcover :if luggage compartment
cover :is fit ted.
R Top Tether belt Bis routed between rear
seat backrest ;and the safety net if the
safety net is fit ted. 54
Children in the vehicleSafety

Seat positions
Weigh
tcatego-
ries Front-passenger seat Rear seat
Front-
passenger air-
bag is no
tdisa-
bled: The front-
passenger air-
bag is disa-
bled
2 Left
,right Centre
Grou
p0:upto
10 kg X U, L U U
Group 0+: up
to 13 kg
X U, L U U
Group I:
9to
18 kg UF U, L U U
Group II: 15 to
25 kg UF U, L U U
Group III: 22 to
36 kg UF U, L U U
"Universal" category child restraint systems can be recognised by their orange approval label.
Approval label on the child restrain
tsystem (example)
Key to the letters used in the table:
XI SOFIX position tha tisnot suitable for ISOFI Xchild restraint system sinthis weight cat-
egory and/or size category.
IU FS uitable for forward-facing ISOFIX child seat securing systems that belong to the "uni-
versal" category which are approved for use in this weigh tcategory.
IL Suitable for ISOFI Xchild restraint system sasrecommended; see the following table of
"Recommended child restraint systems" (Y page 58).
2 Vehicles with automatic chil dseat recognition on the front-passenger seat: achild restraint system of the
"Universal" category with atransponde rfor automatic child seat recognition must be fitted. The 4
PASS ENGER AIRBAG OFF indicator lamp must be lit. Children in the vehicle
57Safety Z

Child-proof locks
Important safety notes G
WARNING
Activate th echild-proo flocks for th erear
door sand the override switch for the rear
windows whe nchildren are travelling in the
vehicle. Otherwise, the chil dren could open
doors or side windows while the vehicle is in
motion and injure themselv esor others. G
WARNING
Do not leave children unsupervised in the
vehicle, even if they are secur edinac hild
restraint system .They coul dinjure them-
selve sonp arts of the vehicle. They could also
be seriousl yoreven fata llyi njured by pro-
longed exposure to extreme hea torcold.
Do not expose the child restraint system to
direct sunlight. Part softhe chil drestraint sys-
tem could heat up and the child could burn
herself/himself on them.
If ac hild opens adoor, the child or other per-
sons coul dbeinjured as aresult. They could
get out and injure themselves or be injured by
ap assing vehicle.
Also observe the notes on HOLD. Relevant
information can be found in the index.
Child-proof locks for the rear doors You secure each door individually with the
child-proo flocks on the rea rdoors. Adoor
secured with achild-proof lock can notbe
opened from inside the vehicle. When the
vehicle is unlocked, the door can be opened
from the outside. X
To activate: press the child-proof lock
leve rupint he direction of arrow :.
X Make sur ethat the child-proof lock sare
workin gproperly.
X To deactivate: press thechild-proof lock
lever down in the direction of arrow ;.
Overrid efeature for the rear side win-
dows X
To activate/deactivate: press button:.
If indicator lamp ;is lit, operation of the
rear side windows is disabled. Operation is
only possible using the switches in the driv-
er' sd oor. If indicator lamp ;is off ,oper-
ation is possible using the switches in the
rear compart ment. Driving safety systems
Driving safety systems overview
In this section, you will find information about
the following driving safety systems: 60
Drivin
gsafety systemsSafety

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

!
When opening, the tailgate swings up and
out. Therefore, mak esure that there is suf-
ficient clearance above and behind the tail-
gate.
X Insert emergency key element ;into
opening in trim :.
X Turn emergency key element ;90° clock-
wise.
X Push emergency key element ;in the
direction of the arrow and open the tail-
gate. Side windows
Important safety notes
G
WARNING
Make sure that nobody can become trapped
between the side window and the door frame
when aside window is opened. Do not touch
or lean against the side window during the
opening procedure. You could become trap-
ped between the side window and the door
frame as the side window moves down. If
there is arisk of becoming trapped, release
the switch or pull the switch upwards to close
the side window again. G
WARNING
Make sure that nobody can become trapped
as you close aside window. If there is arisk
of becoming trapped, release the switch or
press it agai ntoopen the side window again. G
WARNING
Children may injur ethemselves if they open
or close the side windows.
Never leav echildren unsupervised in the vehi-
cle. Always tak ethe key with you when leaving
the vehicle, even if you ar eonly leaving it for
as hort time. G
WARNING
Do not leav echildren unsupervised in the
vehicle, even if they ar esecured in achild
restraint system .The children could:
R be seriously or even fatall yinjured on parts
of the vehicle
R be seriously or even fatally injured by pro-
longed exposure to extremely hig hor
extremely low temperatures
If children open adoor, they could:
R seriously or even fatally injure other people
R get out of the vehicle and injure them-
selves, or be seriously or even fatally
injure dbya passing vehicle
Activat ethe child-proof locks/overrid efea-
tur eifc hildren ar etravelling in th evehicle.
They could otherwise open doors or side win-
dows while the vehicle is in motion and
thereby injure themselves or others. Opening and closing the side win-
dows :
Fron tleft
; Fron tright Side windows
83Openingand closing Z

in such
away that you have agood view of
roa dand traffic conditions.
X Vehicles with amemory function: save
the seat, steerin gwheel and exterior mirror
settings (Y page 103). Sea
ts Important safety notes
G
WARNING
The seats can still be adjusted when ther eis
no key in the ignition lock. For this reaso n,
children shoul dnever be left unsupervised in
the vehicle. They could adjust the seat sand
become trapped. G
WARNING
Only adjus tthe driver' sseat when the vehicle
is stationary. You will otherwise be distrac ted
from the road and traffic conditions and you
could lose control of the vehicle as aresult of
the seat moving. This could cause an acci-
dent. G
WAR
NING
If you adjus tthe seat height car elessly, you or
others could be trapped and thereb yinjured.
Children in particular could unintentionally
pres sthe buttons to electrically adjust the
seat sand become trapped.
Take care that:
R whil emoving the seats, your hands do not
get under the lever assembly of the seat
adjustmen tsystem.
R children in the vehicl edonot slidetheir
hands unde rthe levers. G
WARNING
Make sur ethat nobody can becom etrapped
when adjusting the seats.
Observe the notes on airbags.
Secure children as recomm ended; see the
"Children in the vehicle" section. G
WAR
NING
Make sure that the back of your head is sup-
ported at eye level by the central area of the
head restraint .Ifyour head is not supported
correctly by the head restraint ,you coul dsuf-
fer asever eneck injury in the event of an
accident .Never driv eifthe head rest raints are
not engaged and set correctly. G
WARNING
As eat belt can only offer its intended degree
of protection when the back rest is almost ver-
tical and the occupan tiss itting upright. Avoid
seat positions that do not allow the seat belt
to be routed correctly. Adjust the backrest so
that it is as upright as possible .Never travel
with the back rest reclined too fa rbackwards.
You could otherwise be seriousl yoreven
fatally injured in th eevent of an accident or
sudden braking.
! To avoid damag etothe seats and the seat
heating, observe the followin ginformation:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the sea tcover sare damp or wet, do not
switc hont he seat heating. The seat
heating should also not to be used to dry
the seats.
R clea nthe seat cover sasrecommended;
see the "In terior care" section.
R do not transport heav yloads on the
seats. Do not plac eshar pobjects on the
seat cushions ,e.g. knives, nails or tools.
Th es eats should only be occupied by
passengers, if possible.
R when the seat heatin gisinoperation ,do
not cover the seats with insulating mate-
rials, e.g. blanke ts,c oats, bags, seat cov-
ers, child seats or booster seats.
! When you mov ethe seats, make sur ethat
ther eare no objects in th efootwell or
behind the seats. Otherwise, you could
damage the seats and the objects. Seats
93Seats,steering wheeland mirrors 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).Running-i
nnotes Important safet
ynotes G
WARNING
New brake pads/lining sonlyh aveo ptimal
braking performanc eafter se veral hu ndred
kilometres. Until then ,compensate for this by
applying greater force to the brake pedal. This
also applies whe nbrake pads/linings or
brak ediscs have been changed. The first 1,500 km
The more you look after the engine when it is
new, the more satisfied you will be with its
performanc einthe future.
R Therefore, drive at varying speeds and
engin espeeds for the first 1,500 km.
R Avoi dheavy loads on the engine during this
period, e.g. driving at ful lthrottle.
R Change gear in good time, at the latest
when the rev counter needl eis2
/ 3 of the
way to the red area in the rev coun terd is-
play.
R Do not manually shift to alower gear to
brake the vehicle. R
If possible, do not depress the accelerator
pedal past the point of resistanc e(kick-
down).
R Only select shift ranges 3,2or 1whe ndriv-
ing slowly, e.g .inmountainou sterrain.
Af ter1 ,50 0km, yo umay gradually bring the
vehicle up to full road and engine speeds.
i You should also observe these notes on
runnin ginift he engin eorparts of the drive
train on your vehicle have been replaced. Driving
Important safety notes
G
WARNING
Do not keep any object sinthe driver's foot-
well. If you use afloormat or carpet in the
driver's footwell, make sure that they are cor-
rectly secured and that there is sufficient
clearance for the pedals.
Do not place several floormats on top of one
another.
The object sorfloormats could otherwise get
between the pedals in the event of sudden
braking or acceleration. You may then no lon-
ger be able to brake or accelerate as intended.
This may result in an accident and injury. 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.
! Warm up the engine quickly. Do not use
the engine's full performanc euntil it has
reache doperating temperature.
Only set the automatic transmission to the
respective driv eposition swhen the vehicle
is stationary.
Where possible, avoid spinnin gthe drive
wheels when pulling away on slippery 138
DrivingDriving and parking

X
Take your foot off the brake pedal.
i Onc eyou have taken your foot off the
brake pedal, the vehicle is held for around
one second.
X Pull away.
Hill star tassist will not func tion if:
R you ar epulling away on alevel road or a
downhill gradient.
R the transmission is in position N.
R the electric parking brak eisapplied.
R ESP ®
is malfunc tioning. ECO sta
rt/stop function
General notes The ECO start/stop func
tion switches the
engin eoff automatically if th evehicle stops
moving.
The engine star tsautomatically when you pull
away again. The ECO start/stop function
thereby helps you to reduce the fuel con-
sumption and emissions of your vehicle.
The ECO start/stop function is activated each
time the engine is switched on. The system is
operational when ECO symbol ¤is shown
in the multifunc tion display.
If the ECO star t/stop func tion is deactivated
(Y page 143), ECO symbol ¤is not
shown. G
WARNING
If the ECO symbol appears in the multifunc-
tion displa ywhen the engin eisswitched off,
the engine was switched off automatically.
However, all vehicle systems remain active. If
you open the door, unfasten your seat belt or
remove your foot from the brake pedal, the
engine will automatically start .The vehicle
ma ybegin moving. There is arisk of accident.
To prevent the vehicle from accidentally pull-
ing away, do not release the brake pedal until
you want to drive on. Do not leave the vehicle until you have
switched off the ignition and secured the vehi-
cle to prevent it from rolling away.
! Always switch the ignition off and take the
key with you when leaving the vehicle.
Automa tice ngine switch-off The ECO start/stop function switches the
engin
eoff automatically in certain situations.
To do this ,the vehicle must brake to astand-
still and the brakes must remain depressed
with the transmission in position Dor N.
The engine is only switched off if:
R the vehicle is at astandstill.
R the outside temperature is withi nthe range
that is suitable for the system.
R the engin eisatnormal operatin gtemper-
ature.
R the set temperature for the vehicle interior
has been reached.
R the batter yissufficiently charged.
R the system detects that the windscreen is
not misted up when the air-conditioning
system is switched on.
R the bonnet is closed.
R the driver' sdoor is closed and the seat belt
is fastened.
i If you shift the transmission from Rto D,
the ECO start/stop func tion is available
again onc ethe ¤ ECO symbol reap-
pear sint he multifunction display.
i The engin ecan be switched off automat-
ically amaximum of three times in succes-
sion. The automatic engine switch-off is
then available again after the ¤ECO
symbol appears in the multifunction dis-
play.
i You can still activate the HOLD function
when the vehicle is stationary, even if the
engine has been switched off automati-
cally. It is then not necessary to continue
applying the brakes during the automatic
stop phase .When you depress the accel- 142
DrivingDriving and 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

ded. Fillin
gavehicle standing on an uneven
surface is not permitted. There is adanger
of overfilling, which can cause damage to
BlueTEC exhaust gas aftertreatment com-
ponents.
Have the AdBlue ®
tank refilled at aqualified
specialist workshop. However ,you can also
top up the AdBlue ®
tan k:
R at afilling station with an AdBlue ®
filling
pump
R with AdBlue ®
refill bottles
R with an AdBlue ®
refill canister
If the outside temperature is lower than
Ò 11 †, it may be difficult to top up. If
AdBlue ®
is frozen and ther eisanactive warn-
ing indicator, topping up may not be possible.
Park the vehicle in awarmer place, e.g. in a
garage, until AdBlue ®
has become fluid again.
Topping up is then possible again. Alterna-
tively, have the AdBlue ®
tank refilled at a
qualified specialis tworkshop.
When the pum pnozzle switches off automat-
ically during filling at afilling pump, the
AdBlue ®
tank has been completely filled. Do
not fill the the AdBlue ®
tank any fur ther.
AdBlue ®
may possibly leak.
! Surfaces which have com eintoc ontact
with AdBlue ®
while refillin gshould be
rinsed immediately with water, or remove
AdBlue ®
with amoist clot hand cold water.
If AdBlue ®
has alread ycrystallised, us ea
sponge and cold water to clean the area.
AdBlue ®
residue crystallises after acertain
amount of tim eand soils the affected sur-
faces.
! AdBlue ®
is not afuel additive and must
not be added to the fuel tank .IfAdBlue ®
is
added to the fuel tank ,this can lead to
engin edamage.
Further information on
AdBlue ®
(Y page 374). Opening the AdBlue
®
filler cap The filler nec
kfor AdBlue ®
is located behind
the fuel filler flap.
The fuel filler fla pisunlocked or locked auto-
matically whe nyou open or close the vehicle
with the key or using KEYLESS-GO. X
Swit choff the ignition.
X Press the fuel filler fla pinthe direction of
arrow :.
The fuel filler fla pswings up.
X Turn blue AdBlue ®
filler cap ;anti-clock-
wise and remov eit.
AdBlue ®
filler cap ;is secured with aplas-
tic strip.
AdBlue ®
refill canisters AdBlue
®
refill canisters can be obtained at
many filling stations or at aMercedes-Benz
Ser vice Centre. AdBlue ®
refill canis ters are
often sold with afiller hose. Afiller hose that
does not exactly fit the vehicle's AdBlue ®
tan koffers no pro tection agains toverfilling.
AdBlue ®
could leak ou tasar esult of overfill-
ing. Mercedes-Ben zoffers aspecial disposa-
ble hose with overfill protection. You can
obtain this from any Mercedes-Benz Service
Centre. AdBlue ®
is available in avariety of
containers and receptacles. Only use the dis-
posable hos ewith the Mercedes-Benz
AdBlue ®
refill canister s.158
RefuellingDriving and parking