2012 MERCEDES-BENZ G-CLASS SUV Owners Manual

Tyre pressure table
If a tyre size precedes a tyre pressure, the tyre
pressure informatio
nfollowing is only valid
for that tyre size. Instead of the complete tyre size, the rim
diameter alone, for example
R16, may be lis-
ted. Rim diameter
:is part of the tyre size and
can be found on the tyre sidewall.
Use a suitable pressure gauge to check the
tyre pressure. The outer appearance of a tyre
does not permit any reliable conclusion about
the tyre pressure.
On vehicles fitted with the electronic tyre
pressure monitor, the tyre pressure can be
checked using the on-board computer.
If possible, only correc ttyre pressures when
the tyres are cold.
The tyres are cold:
R if the vehicle has been parked with the tyres
out of direc tsunlight for at least three
hours and
R if the vehicle has no tbeen driven further
than 1.6 km
Depending on the ambient temperature, the
speed you are driving at and the load on the
tyres, the tyre temperature and thus the tyre
pressure change by approximately 10 kPa
(0.1 bar/1.5 psi) per 10 †. Take this into
accoun twhen checking the pressure of warm
tyres. Only correct the tyre pressure if it is too
low for the current operating conditions.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R cause increased tyre damage
R have a negative effect on handling charac-
teristics and thus the driving safety (e.g.
aquaplaning) 326
Tyre pressureWheels and tyres

i
The tyre pressure values given for low
loads are minimum values which offer you
good ride comfor tcharacteristics.
However, you can also use the values given
for higher loads. These are permissible and
will not adversely affect the running of the
vehicle. Checking the tyre pressures
Important safety notes Observe the notes on tyre pressure:
(Y
page 325).
Information on air pressure for the tyres on
your vehicle can be found:
R on the vehicle's tyre and loading informa-
tion table on the B-pillar (Y page 326)
R on the tyre pressure label on the fuel filler
flap (Y page 326)
R in the "Tyre pressure information" section
R in the "Tyre pressure information" section
(Y page 325)
Checking the tyre pressure manually To determine and set the correct tyre pres-
sure, proceed as follows:
X Remove the valve cap of the tyre that is to
be checked.
X Press the tyre pressure gauge securely
onto the valve.
X Read the tyre pressure and compare it with
the recommended value on the tyre and
loading information table on the B-pillar on
the driver's side of your vehicle
(Y page 326).
X The tyre pressure is too low: increase the
tyre pressure to the recommended value.
X The tyre pressure is too high: press down
the metal pin in the valve using the tip of a
pen, for example.
Air is released from the tyre.
X Check the tyre pressure again with the tyre
pressure gauge. X
Screw the valve cap onto the valve.
X Repeatt hese steps for the other tyres. Tyre pressure monitor
Important safety notes It is the driver's responsibility to set the tyre
pressure to the recommended cold tyre pres-
sure suitable for the operating situation
(Y
page 325). Note that the correct tyre pres-
sure for the current operating situation must
first be taught-in to the tyre pressure monitor.
if there is a substantial loss of pressure, the
warning threshold for the warning message is
aligned to the reference values taught-in.
Restart the tyre pressure monitor after
adjusting to the cold tyre pressure
(Y page 328). The current pressures are
saved as new reference values. This will
ensure that a warning message will only
appearift he tyre pressure drops significantly.
The tyre pressure monitor does not warn you
of an incorrectly set tyre pressure. Observe
the notes on the recommended tyre pressure
(Y page 325).
The tyre pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tyre is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering manoeuvres.
If a tyre pressure monitor system is fitted, the
vehicle's wheels have sensors fitted that
monitor the tyre pressures in all four tyres.
The tyre pressure monitor warns you when
the pressure drops in one or more of the
tyres. The tyre pressure monitor only func-
tions if the correct sensors are fitted to all
wheels.
Information on tyre pressures is displayed in
the multifunction display. After a few minutes
of driving, the current tyre pressure of each
tyre is shown in the multifunction display.
The tyre pressure values indicated by the on-
board computer may differ from those meas- Tyre pressure
327Wheels and tyres Z

ured at a filling station with a pressure gauge.
The tyre pressures shown by the on-board
computer refer to those measured at sea
level. At high altitudes, the tyre pressure val-
ues indicated by a pressur
egauge are higher
than those shown by the on-board computer.
In this case, do no treduce the tyre pressures.
The operation of the tyre pressure monitor
can be affected by interference from radio
transmitting equipment (e.g. radio head-
phones, two-way radios) that may be being
operated in or near the vehicle.
Checking tyre pressure electronically X
Make sure that the key is in position 2
(Y page 143)in the ignition lock.
X Press the =or; button on the steer-
ing wheel to select the Serv. menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The curren ttyre pressur efor each wheel
will be displayed in the multifunction dis-
play.
If the vehicle has been parked for over
20 minutes, the message Tyre pressureswill be displayed after a few
minutes of driving appears.
After a teach-in period, the tyre pressure
monitor automatically recognises new
wheels or new sensors. As long as a clear
allocation of the tyre pressure values to the
individual wheels is not possible, the Tyrepressure monitor active display mes-
sage is shown instead of the tyre pressure
display .The tyre pressures are already being
monitored.
i If a spare wheel is fitted, the system may
continue to show the tyre pressure of the
wheel that has been removed for a few
minutes. If this occurs, note that the value
displayed for the position where the spare
tyre is fitted is not the same as the spare
tyre's current tyre pressure. Warning messages of the tyre pressure
monitor If the tyre pressure monitor detects a signifi-
cant pressure loss on one or more tyres, a
warning message is shown in the multifunc-
tion display.
Awarning tone also sounds and
the tyre pressure warning lamp lights up in
the instrument cluster.
Each tyre that is affected by a significant loss
of pressure is highlighted in the pressure dis-
play.
X If the Please correct tyre pres‐ surePlease correct tyre pressure
message appears in the multifunction dis-
play, check the tyre pressure on all four
wheels and correct it if necessary.
i If the wheel positions on the vehicle are
interchanged, the tyre pressures may be
displayed for the wrong positions for a
short time. This is rectified after a few
minutes of driving, and the tyre pressures
are displayed for the correct positions.
Restarting the tyre pressure monitor When you restar
tthe tyre pressure monitor,
all existing warning messages are deleted and
the warning lamps go out. The monitor uses
the currently set tyre pressures as the refer-
ence values for monitoring. In most cases, the
tyre pressure monitor will automatically
detect the new referencev alues after you
have changed the tyre pressure .However,
you can also define reference values man-
ually as described here.
X Use the table on the inside of the fuel filler
flap to ensure 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 page 325).
X Make sure that the key is in position 2
(Y page 143) in the ignition lock.
X Press the =or; button on the steer-
ing wheel to select the Serv. menu.328
Tyre pressureWheels and tyres

X
Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The multifunction display shows the cur-
rent tyre pressure for the individual tyres or
the Tyre pressures will be dis‐ played after a few minutes of driv‐
ing message.
X Press the :button.
The Use current pressures as new reference values message appears in
the multifunction display.
If you wish to confirm the restart:
X Press the abutton.
The Tyre press. monitor restarted message appears in the multifunction dis-
play.
After you have driven for a few minutes, the
system checks whether the current tyre
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 type approval for the tyre pres-
sure monitor Country Radio type approval number
Brazil 1489-10-4415
China CMIIT-ID 2009DJ1352
Dubai TRA, Registered No.
0014517/08
Morocco MR5527 ANRT 2010/2
7. April
2010 Singa-
pore Compliance with IDA Standard
DA103365
South
Africa TA-2008/1068
TA-2008/1069 Changing
awheel Flat tyre
The "Breakdown assistance" section
(Y page 309) contains information and notes
on how to deal with a fla ttyre. Interchanging the wheels
G
WARNING
Interchange the front and rear wheels only if
they have the same dimensions, fo rexample
size, offset, etc.
Have the tightening torque checked at a quali-
fied specialist workshop afte rawheel is
changed.
The wheels could work loose if they are not
tightened to a torque of 130 Nm.
For safety reasons, Mercedes-Ben zrecom-
mends that you only use wheel bolts of the
correct size which have been approved for
Mercedes-Benz vehicles.
! On vehicles fitted with a tyre pressure
monitor, electronic components are loca-
ted in the wheel.
Tyre-fitting tools should not be applied in
the area of the valve, as this could damage
the electronic components.
Only have tyres changed at a qualified spe-
cialist workshop.
Interchanging the front and rear wheels of
differing dimensions can render the general
operating permit invalid.
Always pay attention to the instructions and
safety notices in the section on "Wheel
changing and spare wheel fitting"
(Y page 330).
The wear patterns on the fron tand rea rtyres
differ, depending on the operating conditions.
Interchange the wheels before a clear wear
pattern has formed on the tyres. Front tyres
typically wear more on the shoulders and the
rear tyres in the centre. Changing
awheel
329Wheels and tyres Z

On vehicles that have the same size front and
rear wheels, you can interchange the wheels
every 5000 km to 10,000 km depending on
the degree of tyre wear. Maintain the direc-
tion of tyre rotation.
Cleant he contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tyre pressure and
reactivate the tyre pressure monitor
(Y page 327) if necessary. Direction of rotation
Tyres with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of aquaplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation.
You may fit the spare wheel against the direc-
tion of rotation. Observe the time restriction
on use as well as the speed limitation speci-
fied on the spare wheel. Storing wheels
Store tyres that are not being used in a cool,
dry and preferably dark place. Protect the
tyres against oil, grease, petrol and diesel. Cleaning the wheels
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-
erwise damage the tyres and cause an acci-
dent. Fitting
awheel
Preparing the vehicle X
Prepare the vehicle as described
(Y page 309).
X If a trailer is coupled to the vehicle, uncou-
ple it.
X Remove the vehicle tool kit and the jack
(Y page 306).
X Secure the vehicle to prevent it from rolling
away.
X Remove the spare wheel from the spare
wheel bracket (Y page 307).
Securing the vehicle against rolling
away X
On level ground: place chocks or other
suitable items unde rthe front and rear of
the wheel that is diagonally opposite the
wheel you wish to change.
X On downhill gradients: place chocks or
other suitable items in front of the wheels
of the front and rear axle.
Raising the vehicle G
WARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directly under
the jacking point of the vehicle.
The following must be observed when raising
the vehicle:
R to raise the vehicle, only use the vehicle-
specific jack that has been tested and
approved by Mercedes-Benz. If the jack is
used incorrectly, it could tip over while the
vehicle is raised.
R the jack is designed only to raise and hold
the vehicle for a short time while a wheel 330
Changing
awheelWheels and tyres

is being changed. It is not suited for per-
forming maintenance work under the vehi-
cle.
R avoid changing the wheel on uphill and
downhill slopes.
R before raising the vehicle, secure it from
rolling away by applying the parking brake
and inserting wheel chocks. Neve rdisen-
gage the parking brake while the vehicle is
raised.
R the jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a
large, load-bearing underlay must be used.
On a slippery surface, a non-slip underlay
must be used, e.g. rubber mats.
R do not use wooden blocks or similar
objects as a jac kunderlay. Otherwise, the
jack will not be able to achieve its load-
bearing capacity due to the restricted
height.
R make sure tha tthe distance between the
underside of the tyres and the ground does
not exceed 3 cm.
R never place your hands or feet under the
raised vehicle.
R never lie under the raised vehicle.
R never start the engine when the vehicle is
raised.
R never open or close a door or the tailgate
when the vehicle is raised.
R make sure that no persons are present in
the vehicle when the vehicle is raised. X
Using wheel wrench :, loosen the bolts on
the wheel you wish to change by about one full turn. Do not unscrew the wheel bolts
completely.
Pump lever
;
Notch on pump lever
X Assemble the pump lever for the jack. It can
be found with the vehicle tool kit
(Y page 306). X
Turn pressure release screw =clockwise
as far as it will go using notch ;on the
pump lever.
Pressure release screw =is closed.
i Do not turn pressure release screw =by
more than one to two revolutions. Other-
wise, hydraulic fluid could escape. Changing
awheel
331Wheels and tyres Z

X
Position jack :on the axle carrier
tube ;of the front or rear axle. Jack :
must always stand vertically, even on
slopes.
X Raise the vehicle by pumping in the direc-
tion of the arrow, until the tyre is a maxi-
mum of 3 cm off the ground.
Removing awheel !
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 Unscrew the wheel bolts.
X Remove the wheel.
Fitting anew wheel G
WARNING
If a wheel hub thread is damaged, do not drive
the vehicle any further .Contactaqualified
specialist workshop. G
WARNING
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety rea-
sons, Mercedes-Benz recommends that you
only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel. Other wheel bolts could
work loose or damage the brake system.
Do not tighten the wheel bolts completely
while the vehicle is still jacked up. The vehicle
could topple off the jack. Always pay attention to the instructions and
safety notices in "Changing a wheel"
(Y
page 329).
X Clean the wheel and wheel hub contact
surfaces.
X Place the new wheel on the wheel hub and
push it on.
X Tighten the wheel bolts until they are fin-
ger-tight.
Lowering the vehicle G
WARNING
The wheels could work loose if the wheel nuts
and bolts are not tightened to the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed. X
Open the pressure release screw on the
jack using the pump lever (Y page 330) by
approximately one turn.
X Place the jack to one side.
X Tighten the wheel bolts evenly in a cross-
wise pattern in the sequence indicated
(: toA). The tightening torque must be
130 Nm.
X Push the jack piston back in and close the
drain plug.
X Use the bolts to secure the faulty wheel to
the spare wheel bracket (Y page 307).332
Changing
awheelWheels and tyres

X
Stow the jack and the vehicle tools in the
vehicle again.
X Check the tyre pressure of the newly fitted
wheel and adjus titifnecessary.
You will find a table of tyre pressures on the
inside of your vehicle's fuel filler flap. Wheel and tyre combinations
General notes
! For safety reasons, Mercedes-Benzr ec-
ommends that you only use tyres, wheels
and accessories which have been approved
by Mercedes-Benzs pecifically for your
vehicle. These tyres have been specially
adapted for use with the driving safety sys-
tems, such as ABS or ESP ®
.
Only use tyres, wheels or accessories tes-
ted and approved by Mercedes-Benz .Cer-
tain characteristics, e.g. handling, vehicle
noise emissions or fuel consumption, may
otherwise be adversely affected. In addi-
tion, when driving with aload, tyre dimen-
sion variations could cause the tyres to
come into contact with the bodywork and
axle components.T his could result in dam-
age to the tyres or the vehicle.
Mercedes-Ben zaccepts no liability for
damage resulting from the use of tyres,
wheels or accessories othe rthan those tes-
ted and approved.
Further information about wheels, tyres
and approved combinations can be
obtained from any Mercedes-Benz Service
Centre.
! Large wheels: the lower the section width
for a certain wheel size, the lower the ride
comfort is on poor road surfaces. Roll com-
fort and suspension comfort are reduced
and the risk of damage to the wheels and
tyres as a result of driving over obstacles
increases.
i You will find a table of tyre pressures on
the inside of your vehicle's fuel filler flap. For further information on tyre pressure,
see (Y
page 325). Check tyre pressures
regularly and only when the tyres are cold.
i Notes on the vehicle equipment –always
fit the vehicle:
R with tyres of the same size on a given axle
(left/right)
R fit the same type of tyres on your vehicle
at a given time (summer tyres, winter
tyres, all-weather tyres, All Terrain tyres)
The tyre and wheel combinations listed in the
tables below apply to the following models: V1 G 500
V2 G 350 BlueTEC
V3 G 63 AMG
G 65 AMG
i
Not all wheel/tyre combinations can be
mounted at the factory in all countries. Tyres
G3 50 BlueTEC Summer tyres
Tyres Light-alloy
wheels
265/60 R18 109 H
Tyre manufacturer
recommended by
Mercedes-Benz:
Bridgestone. 7.5
Jx18 H2 ET 63 i
You can obtai ninformation abou ttyres
and tyre dimensions that are no tlisted here
at any Mercedes-Benz Service Centre. Wheel and tyre combinations
333Wheels and tyres Z