2012 MERCEDES-BENZ G-Class tires

Display messages Possible causes/consequences and
M Solutionsh
Tire
Pres.
Caution
Tire Defect G
Risk of accident
The tire pressure in one or more tires has dropped suddenly.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay

attention to the traffic conditions as you do so.
X If necessary, change a wheel ( Y page 226).h
Tire Pres. Check
Tires G
Risk of accident
The tire pressure in one or more tires has dropped significantly.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay

attention to the traffic conditions as you do so.
X If necessary, change a wheel ( Y page 226).
X Check the tire pressure. If necessary, correct the tire pressure
(Y page 248). Vehicle
Display messages Possible causes/consequences and
M Solutions: The rear door is open.
X
Close the rear door. M G
Risk of accident
Vehicles with anti-theft alarm system:
The hood is open. A warning tone also sounds.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the parking brake.
X Close the hood. ¡ At least one door is open.
X
Close all the doors. ~
Bluetooth Ready The Bluetooth
®
connection between your mobile phone and
COMAND is not activated.
X If desired, activate the Bluetooth ®
connection between your
mobile phone and COMAND (see the separate Operator's
Manual). ¥
Top
Up

Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Add washer fluid ( Y page 214). Display messages
177
On-board computer and displays Z

Tires
Problem Possible causes/consequences and
M Solutions
h
USA only:
The
yellow

tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
Canada only:
The yellow tire pressure
monitor warning lamp
(pressure loss) is lit. G
Risk of accident
The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
X Stop
the vehicle without making any sudden steering or braking
maneuvers. Pay

attention to the traffic conditions as you do so.
X Observe the additional display messages in the multifunction
display.
X Check the tire pressure. If necessary, correct the tire pressure
(Y page 249).
X If necessary, change a wheel ( Y page 265).h
USA only:
The
yellow

tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
60 seconds and then
remains lit. The tire pressure monitor is defective.
X
Observe the additional display messages in the multifunction
display.
X Visit a qualified specialist workshop. G
WARNING
Each tire, including the spare (if provided), should be checked at least every two weeks when
cold and inflated to the pressure recommended by the vehicle manufacturer on the Tire and
Loading Information placard on the driver's door B-pillar or, if available, the tire pressure label
on

the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated
on the Tire and Loading Information placard or the tire pressure label, you should determine the
proper tire pressure for those tires.
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires are
significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should
stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving
on a significantly underinflated tire causes the tire to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance,
and it is the driver's responsibility to maintain correct tire pressure, even if underinflation has
not reached the level to trigger illumination of the TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the
system is not operating properly. The TPMS malfunction indicator is combined with the low tire
pressure telltale. When the system detects a malfunction, the telltale will flash for approximately
1 minute and then remain continuously illuminated. This sequence will be repeated every time Warning and indicator lamps in the instrument cluster
185
On-board computer and displays
Z

the vehicle is started as long as the malfunction exists. When the malfunction indicator is
illuminated, the system may not be able to detect or signal low tire pressure as intended.
TPMS
malfunctions
may occur for a variety of reasons, including the installation of incompatible
replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels
on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to
continue to function properly. 186
Warning and indicator lamps in the instrument cluster
On-board computer and displays

X
Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz.
X Thoroughly hose down the vehicle with a
gentle jet of water.
X Do not point the water jet directly towards
the air inlets.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with a chamois.
X Do not let the cleaning agent dry on the
paintwork.
Power washers G
WARNING
Do not use power washers with circular jet
nozzles (concentrated-power jets) to clean
your vehicle,
especially for cleaning tires. You
could otherwise damage the tires and cause
an accident.
! Always maintain a distance of at least
11.8 in (30 cm) between the vehicle and the
power washer nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the power washer nozzle around
when cleaning your vehicle.
Do not aim directly at any of the following:
R tires
R door gaps, roof gaps, joints, etc.
R electrical components
R battery
R connectors
R lights
R seals
R trim
R ventilation slots
Damaged seals or electrical components
can lead to leaks or failures. Cleaning the wheels !
Do not

use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
! Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after
cleaning. Braking heats the brake discs and
the brake pads/linings, thus drying them.
The vehicle can then be parked.
Cleaning the paintwork Scratches, corrosive deposits, areas affected
by corrosion and damage caused by
inadequate
care

cannot always be completely
repaired. In such cases, visit a qualified
specialist workshop.
X Remove dirt immediately, where possible,
while avoiding rubbing too hard.
X Soak insect remains with insect remover
and rinse off the treated areas afterwards.
X Soak bird droppings with water and rinse
off the treated areas afterwards.
X Remove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with a cloth soaked in petroleum ether or
lighter fluid.
X Use tar remover to remove tar stains.
X Use silicone remover to remove wax.
! Do not affix:
R stickers
R films
R magnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
If water

no longer forms "beads" on the paint
surface, use the paint care products
recommended and approved by Mercedes-
Benz. This is the case approximately every 218
Care
Maintenance and care

X
Fold the rear bench seat forward
(Y page 191).
X Open cover :.
X Pull bar = upwards and detach from
tab ?.
X Take out jack ;.
! Make sure that, while installing the
vehicle jack, there are no cables on the
holder, in order to avoid them becoming
trapped.
! Make sure that, while installing the
vehicle jack, there are no cables on the
holder, in order to avoid them becoming
trapped. Exterior spare wheel bracket
General notes G
WARNING
If the spare tire is more than 6 years old or is
not the
same model as the regular tires, have
the spare tire replaced with a new tire at the
nearest Mercedes-Benz Center.
Never operate the vehicle with more than one
spare wheel mounted. G
WARNING
G 55 AMG:
Rim and tire sizes are different for the spare
wheel and the normal wheel. With the spare
wheel mounted, handling is impaired. Do not exceed a maximum speed of
50 mph(80 km/h).
The spare wheel is on the outer side of the
rear door.
Removing the cover Stainless-steel spare hub cap
X
Remove the screwdriver from the vehicle
tool kit ( Y page 224).
X Open the lock on cover ring : with
screwdriver = or a similar tool.
X Fold tab ; down. X
Pull cover ring : apart and remove it.
X Pull off cover panel ?. Where will I find...?
225
Breakdown assistance Z

i
When refitting
cover panel ?, make sure
that retainer B engages in recess A.
Removing the spare wheel G
WARNING
Make sure no one is injured when removing
the spare wheel.
Grip wheel from the sides.
Keep hands from beneath the wheel. X
Remove wheel nuts :.
X Remove the spare wheel.
Mounting the wheel After changing a wheel:
X
Repair or replace the damaged wheel as
soon as possible and secure the spare
wheel in place again.
X Secure the damaged wheel on the spare
wheel bracket with wheel nuts :. When
doing so,

make sure that the wheel cannot
come loose. X
When refitting cover panel ?, make sure
that retainer B engages in recess
A(Y page 225).
X Make sure that tab ; is below when
refitting cover ring : (Y page 225).
X For safety reasons, regularly check to
ensure that

the wheel is securely fastened. Flat tire
Preparing the vehicle
X Stop the vehicle as far away as possible
from traffic

on solid, non-slippery and level
ground.
X Switch on the hazard warning lamps.
X Apply the parking brake.
X Bring the front wheels into the straight-
ahead position.
X Move the selector lever to P.
X Switch off the engine.
X Remove the SmartKey from the ignition
lock.
X All occupants must get out of the vehicle.
Make sure

that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditions when doing so.
X Close the driver's door. Changing a wheel and mounting the
spare wheel
Important safety notes G
WARNING
If the spare tire is more than 6 years old or is
not the

same model as the regular tires, have226
Flat tire
Breakdown assistance

Useful information ............................
242
Important safety notes ....................242
Operation ........................................... 242
Winter operation ............................... 244
Tire pressure ..................................... 245
Loading the vehicle ..........................252
Maximum load rating .......................256
Uniform Tire Quality Grading
Standards .......................................... 257
Tire labeling ....................................... 258
Definition of terms for tires and
loading ............................................... 262
Changing a wheel ............................. 265
Wheel and tire combinations ...........266 241Wheels and tires

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please
note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 20). Important safety notes
Consult an

authorized Mercedes-Benz Center
if you require information on approved and
recommended tires and wheels for summer
and winter operation. Advice on purchasing
and caring for tires is also available there. G
WARNING
Replace rims or tires with the same
designation, manufacturer

and type as shown
on the original part. For further information
contact an authorized Mercedes-Benz Center.
If incorrectly sized rims and tires are
mounted, the wheel brakes or suspension
components can be damaged. Also, the
operating clearance of the wheels and the
tires may no longer be correct. G
WARNING
Worn,
old tires can cause accidents. If the tire
tread is worn to minimum tread depth, or if
the tires have sustained damage, replace
them.
When replacing rims, only use genuine
Mercedes-Benz wheel bolts specified for the
particular rim

type. Failure to do so can result
in the bolts loosening and possibly an
accident.
Retreaded tires are not tested or
recommended by Mercedes-Benz, since
previous damage cannot always be recognized on retreads. The operating safety
of the vehicle cannot be assured when such
tires are used.
G
WARNING
If you notice sudden significant vibrations or
unusual handling performance or if you
suspect that damage has occurred to the
vehicle, you should activate the hazard
warning lamps, gently reduce speed and
carefully head for an area that is located at a
safe distance from the road.
Check the tires and the underside of the
vehicle for damage. If the vehicle seems
unsafe, have the vehicle towed away to the
nearest Mercedes-Benz Center or tire dealer
to be repaired. G
WARNING
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
might lose control of the vehicle. Continued
driving with

a flat tire or driving at high speed
with a flat tire will cause excessive heat build-
up and possibly a fire.
i Further information about wheels and
tires can be obtained from any authorized
Mercedes-Benz Center. Operation
Notes on driving
R If the vehicle is heavily loaded, check the
tire pressures and correct them if
necessary.
R When parking

your vehicle, make sure that
the tires do not get deformed by the curb
or other obstacles. If it is necessary to drive
over curbs, speed humps or similar
elevations, try to do so slowly and at an
obtuse angle. Otherwise, the tires,
particularly the sidewalls, can get
damaged. 242
Operation
Wheels and tires