2011 MERCEDES-BENZ M-CLASS SUV wheel bolts

X
Release the electric parking brake.
X Switc hoff the ig nition and leav ethe key in
th ei gnition lock.
! Mak esuret hat:
R the side windows and slidin gsunroo fare
close dcompl etely.
R the blower for the ventilation/heating is
switched off (OFF button is depressed).
R the windscreen wiper switch is at posi-
tion 0.
The vehic lecoul dotherwise be damaged.
After using an automatic car wash, wip eoff
wa xfrom th ewindscreen and the wiper
blades. This wil lprevent smears and red uce
wiping noises cause dbyresidue on the wind-
screen.
Washing by hand In some countries, washing by hand is only
allowed at speciall
yequipped washing bays.
Observe the lega lrequirements for each indi-
vidual country.
X Do not use hot water and do not wash the
vehic lein direct sunlight.
X Use asoft sponge to clean.
X Use amild cleaning agent, such as acar
shampoo approved by Mercedes-Benz.
X Thoroughly hos edown the vehicle with a
gentle jet of water.
X Do not point the water jet directly towards
the air inlet.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with achamois.
X Do not let the cleanin gagent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of roa dsalt deposits carefully and as
soon as possible. High-pressure cleanin
gequipment G
WARNING
Do not use high-pressure cleaners with circu-
lar-jet nozzles (dirt grinders) to clean your
vehicle, in particular the tyres. You could oth-
erwis edamage the tyres and cause an acci-
dent.
! Always maintain adistance of at least
30 cm between the vehicle and the high-
pressure cleaner nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the high-pressure cleaner nozzle
around when cleaning your vehicle.
Do not aim directly at any of the following:
R tyres
R door gaps, roof gaps, joint setc.
R electrical components
R battery
R connectors
R lights
R seals
R trim elements
R ventilatio nslots
Damaged seals or electrical components
can lead to leaks or failures.
Cleanin gthe whee ls !
Do not use acidic whee lcleaning products
to remov ebrake dust .This could damage
wheel bolts and brake components.
! Do not par kupthe vehicle for an extended
period straight after cleanin git, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosio nofthe brake discs and
brake pads/linings. For this reason, you
should drive for afew minutes after clean-
ing. Brakin gheats the brak ediscs and the
brake pads/linings, thus drying them. The
vehicle can then be parked up. Care
325Maintenance andcare Z

the whee
lthat is diagona llyo pposite the
wheel you wish to change. Securing the vehicle on slight downhil
lgradients
X On downhill gradients: place chocks or
othe rsuitabl eitems in front of the wheels
of the front and rear axle.
Raisin gthe vehicle G
WARNING
Th ejack is intended only for lifting the vehicle
briefly for wheel changes.
The vehicle must be placed on stands if you
intend to work under it.
Make sure that the jack is placed on afirm,
non-slip, level surface. Do not use wooden
blocks or similar objects as ajack underlay.
The vehicle could otherwise slip off the jack
and seriousl yinjure you.
Do not start the engine at any time whil ethe
wheel is being changed.
Do not lie unde rthe vehicle when it is being
supported by the jack. If you do not raise the
vehicle as described, it coul dslip off the jack
(e.g. if the engine is started or adoor or the
tailgate is opened or closed) and seriously
injure you. G
WARNING
If you fai ltoposition the jac kcorrectly, the
vehicle may:
R slip off the jack
R injure you or others
R be damaged. Therefore, mak
esure that the jack is posi-
tioned correctly in the respective jacking
points. Before positioning the jack, remove
any dirt that may have collected in the jacking
points. Pleas enote that you must position the
jac kint he openin gofthe jackin gpoint. X
Usin gwheel wrench :,loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew th ebolts com-
pletely.
The jacking points are locate djustb ehind the
fron twheel arches and just in front of the rear
wheel arches (arrows). X
Take the ratchet ring spanner out of the
vehicle tool kit and plac eitont he hexagon
nut of the jac ksothat the letters AUFare
visible. Flat ty
re
339Breakd ownassistance Z

X
Position jack =at jac king point ;.
The centering pin on the jack must be inser-
ted into the intended opening on the jack-
ing point. X
Make sure that the bas eofthe jac kisp osi-
tioned directly under the jac king point.
X Turn ratchet ring spanner ?until jack =
sits completely on jacking point ;and the
bas eofthe jac klies evenly on the ground.
X Turn ratchet ring spanner ?until the tyre
is raised amaximum of three centimetres
from the ground. Removing
awheel X
Unscre wthe uppermost wheel bolt com-
pletely.
X Screw centring pin :into the thread
instead of the wheel bolt.
X Unscrew the remaining wheel bolts fully.
! Do not place wheel bolts in sand or dirt.
The threads of the wheel bolts and wheel
hubs could otherwise be damaged when
the bolts are tightened.
X Remove the wheel.
Fitting anew wheel G
WARNING
Replac edamaged or corroded wheel bolts.
Never oil or grease wheel bolts. This could
cause the bolts to loosen in the wheel hub. G
WARNING
If aw heel hub thread is damaged, you must
not drive the vehicle any further. Consult a
qualified specialist workshop whic hhas the
necessary specialis tknowledge and tool sto
carry out the work required. Mercedes-Be nz
re commends that you use aMercedes-Benz
Ser vice Centre or Service 24h for thi spur-
pose .Inp articular, work relevant to safety or
on safety-related systems must be carried out
at aq ualified specialist workshop. G
WARNING
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety rea- 340
Flat tyreBreakdown assistance

sons, Mercedes-Benz recommends that you
only use wheel bolts whic hhave been
approved for Mercedes-Benz vehicles and the
respective wheel. Other wheel bolts could
work loos eordamage the brake system.
Do not tighten the wheel bolts completely
while the vehicle is still jacked up. The vehicle
could topple off the jack. :
Whee lbolts for all wheels supplied by the
factory
2 Wheel bolts for the "Minispare" emer-
genc yspare wheel
! Always use wheel bolts ;to fit the col-
lapsible emergency spare wheel. Using
other wheel bolts to fit the collapsible
emergency spare wheel could damage the
brak esystem.
X Clea nthe wheel and wheel hub con tact
surfaces. X
Slid ethe emergenc yspare wheel onto the
centrin gpin and push it on. X
Tighten the wheel bolts until they are fin-
ger-tight.
X Unsc rewt he cen tring pin.
X Tighten the last wheel bol tuntil it is finger-
tight.
Lowerin gthe vehicle X
Place th eratchet ring spanner onto the
hexago nnut of the jack so that the letters
AB are visible.
X Turn the ratchet ring spanner until the vehi-
cle is once again standing firmly on the
ground.
X Place the jack to one side. X
Tighten the wheel bolts evenly in across-
wis epattern in the sequence indicated
(: toA ). The tightening torque must be
150 Nm. G
WARNING
Have the tightening torque checked immedi-
ately after awheel is changed. The wheels
coul dwork loose if they are not tightened to
at orqu eof150 Nm.
X Turn the jack back to its initia lposition and
stor eitt ogether with the rest of the tyre-
change tool kit in the luggage compart-
ment.
Vehicles with an emergenc yspare wheel:
X Wrap the faulty wheel in the protec tive film
included with the emergenc yspare wheel Flat ty
re
341Breakd ownassistance Z

detec
tthe new referen ce values after you
have changed th etyrep ressure.
i For an overview of the menus, see
(Y pag e238).
If you wis htodefinethe new reference values
manually:
X Use the tabl eonthe insid eofthe fuel filler
fla ptoe nsure that the tyre pressure is set
correctly in all four tyres for the current
operating conditions.
Also observe the notes in the section on
tyre pressures (Y page359).
X Make sure tha tthe key is in position 2in
the ignition lock.
X Press the =or; button on the steer-
ing wheel to selec tthe Service menu.
X Press the 9or: button to select
Tyre pressu re .
X Press the abutton.
The multifunction display shows the cur-
ren ttyre pressure of the individual tyres or
the Tyrepressures will be dis‐ played after a few minutes of driv‐
ing message.
X Press the :button.
The Usec urrent pressures as new reference values message appears in
th em ultifunction display.
If you wish to confirm the restart:
X Press the abutton.
The Tyre press. monito rrestarted message appears in th
emultifunction dis-
play.
After you have driven for afew minutes, the
system checks whether the curren ttyre
pressures are within the specified range.
The new tyre pressures are then accepted
as reference values and monitored.
If you wish to cancel the restart:
X Press the %button.
The tyre pressure values stored at the last
restart will continue to be monitored. Radio typ
eapproval for the tyr epres-
sur em onitor In certain countries,
aradio type approval for
the tyre pressure monitor may be required.
The radio type approval number for the tyre
pressure monitor can be found online at:
http://www.mercedes-benz.de/
betriebsanleitung. Changing
awheel Flat tyre
Th e" Breakdown ass istance" section
(Y pag e334) contain sinformation and notes
on how to dea lwith aflat tyre. It also provides
instructions on changing awhee lorf itting the
spar ewhee lore mergency spar ewheel. Interch
angin gthe wheels G
WARNING
Interchange th efront and rea rwheels only if
they hav ethe sam edimensions :for example
size, offset ,etc.
After every whee linterchange/change, have
the tightening torque checked at aqualified
specialist workshop that has the necessary
specialist knowledg eand tool stocarry out
the work required. Mercedes-Benz recom-
mends that you use aMercedes-Benz Service
Centr efor this purpose. In particular ,work
relevant to safet yoronsafety-related sys-
tems must be carried out at aqualified spe-
cialist workshop.
The wheel scould work loose if they are not
tightened to atorqu eof150 Nm.
For safety reasons, Mercedes- Benz recom-
mends that you only use wheel bolts of the
correct siz ewhich hav ebeen approved for
Mercedes-Ben zvehicles.
The wear patterns on the fron tand rea rtyres
differ ,dependin gontheopera tingconditions.
Interchange the wheels before aclear wear
pattern has formed on th etyres. Front tyres Changing
awheel
363Wheels and tyre s Z