2012 MERCEDES-BENZ G-Class air condition

G
WARNING
A malfunction in the system has been
detected if one of the following conditions
occurs:
R the indicator lamp in the SOS button does
not light up during the system self-
diagnosis.
R the indicator lamp in the º Roadside
Assistance button does not light up during
the system self-diagnosis.
R the indicator lamp in the E information
button does

not light up during the system
self-diagnosis.
R the indicator lamp in the SOS button,
º Roadside Assistance button or E
information button continues to be lit red
after the system self-diagnosis.
R the Tele Aid inoperative or Tele Aid
not activated message appears on the
multifunction display after the system self-
diagnosis.
If a malfunction is indicated as outlined above,
the system may not operate as expected. In
the event of an emergency, assistance must
be summoned by other means.
Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
R USA: Response Center at
1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
Emergency call Important safety notes
!
You must have a license agreement to
activate the mbrace service. Ensure that
your system

is activated and ready for use,
and press the E MB Info call button to
register. If one of these steps is not carried
out, it may not be possible to activate the
system. If you have questions about the activation,
contact one of the following telephone
hotlines:
R
USA: Response Center at
1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
An emergency call is dialed automatically if
an air

bag or Emergency Tensioning Device is
triggered.
i An automatically dialed mbrace
emergency call cannot be canceled.
An emergency call can also be initiated
manually.
As soon as the emergency call has been
initiated, the indicator lamp in the SOS button
flashes. The Connecting Call message
appears on the multifunction display.
COMAND is muted.
Once a connection has been established, the
Call Connected message appears on the
multifunction display.
All important information on the emergency
is provided, for example:
R current location of the vehicle (as
determined by the GPS system)
R vehicle model
R vehicle color
R vehicle identification number
A short time after the emergency call is
initiated, a voice connection is automatically
established between the Response Center
and the vehicle occupants. If the vehicle
occupants are able to respond, the Response
Center will attempt to obtain more detailed
information on the emergency.
i If there is no response from the vehicle
occupants, an ambulance is immediately
sent to the vehicle. G
WARNING
If the indicator lamp in the SOS button is
flashing continuously and there was no voice
connection to the Response Center Features
199
Stowing and features
Z

three to five months, depending on the
climate
conditions
and the care product used.
If dirt has penetrated the paint surface or if
the paint has become dull, the paint cleaner
recommended and approved by Mercedes-
Benz should be used.
Do not use these care products in the sun or
on the hood while the hood is hot.
X Use a suitable touch-up stick, e.g. MB
Touch-Up Stick,

to correct smaller areas of
paint damage quickly and provisionally.
Matte finish care If your vehicle has a clear matte finish,
observe
the

following instructions in order to
avoid damage to the paintwork due to
incorrect care.
These notes also apply to light alloy wheels
with a clear matte finish.
! Never polish the vehicle or the light alloy
wheels. Polishing causes the finish to
shine.
! Never use paint cleaner, buffing or
polishing products, or gloss preserver, e.g.
wax. These products are only suitable for
high-gloss surfaces. Their use on vehicles
with matte finish leads to considerable
surface damage (shiny, spotted areas).
Always have paintwork repairs carried out
at a qualified specialist workshop.
! Do not use wash programs with a hot wax
treatment under any circumstances.
i Use only insect remover and car shampoo
from the range of recommended and
approved Mercedes-Benz care products.
Cleaning the windows G
WARNING
Switch off the windshield wipers and remove
the SmartKey from the ignition lock before
cleaning the windshield or the wiper blades.
The windshield wipers could otherwise move
and injure you. X
Clean the inside and outside of the
windows with a damp cloth and a cleaning
agent that is recommended and approved
by Mercedes-Benz.
! Do not

use dry cloths, abrasive products,
solvents or cleaning agents containing
solvents to clean the inside of the windows.
Do not touch the insides of the windows
with hard objects, e.g. an ice scraper or
ring. There is otherwise a risk of damaging
the windows.
! Clean the water drainage channels of the
windshield and the rear window at regular
intervals. Deposits such as leaves, petals
and pollen may under certain
circumstances prevent water from draining
away. This can lead to corrosion damage
and damage to electronic components.
Cleaning the wiper blades G
WARNING
Switch off the windshield wipers and remove
the SmartKey from the ignition lock before
cleaning the windshield or the wiper blades.
The windshield wipers could otherwise move
and injure you.
! Do not pull the wiper blade. Otherwise,
the wiper blade could be damaged.
! Do not clean wiper blades too often and
do not rub them too hard. Otherwise, the
graphite coating could be damaged. This
could cause wiper noise.
X Fold the wiper arms away from the
windshield.
X Carefully clean the wiper blades with a
damp cloth.
X Fold the windshield wipers back again
before switching on the ignition.
! Hold the

wiper arm securely when folding
back. The windshield could be damaged if
the wiper arm smacks against it suddenly. Care
219
Maintenance and care 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

Snow chains
For safety reasons, Mercedes-Benz
recommends that you only use snow chains
that have been specially approved for your
vehicle by Mercedes-Benz, or are of a
corresponding standard of quality.
! Information about the use of snow chain
compatible AMG winter tires is applicable
for AMG tires. Use of snow chains is only
permissible with these tires.
! There is not enough space for snow
chains on some wheel sizes. Observe the
information under
"Tires and wheels" in the
"Technical Data" section to avoid damage
to the vehicle or the wheels.
R only use snow chains when driving on roads
completely covered by snow. Do not
exceed the maximum permissible speed of
30 mph (50 km/h). Remove the snow
chains as soon as possible when you are no
longer driving on snow-covered roads.
R local regulations may restrict the use of
snow chains. Applicable regulations must
be observed if you wish to mount snow
chains.
If you intend to mount snow chains, please
bear the following points in mind:
R you may not attach snow chains to all
wheel-tire combinations (Y page 266).
R mount snow chains only in pairs and only
on the rear wheels. Observe the
manufacturer's installation instructions.
! If snow chains are mounted on the front
wheels, the snow chains could grind
against the bodywork or components of the
chassis. This could result in damage to the
vehicle or the tires.
i You may wish to deactivate
ESP ®
(Y page 55) when pulling away with
snow chains mounted. This way you can
allow the wheels to spin in a controlled
manner, achieving an increased driving
force (cutting action). Tire pressure
Tire pressure specifications
G
WARNING
Follow
recommended tire inflation pressures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adversely
affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not

overinflate tires. Overinflated tires can
adversely affect handling and ride comfort,
wear unevenly, increase stopping distance,
and result in sudden deflation (blowout)
because they are more likely to become
punctured or damaged by road debris,
potholes etc.
Do not overload the tires by exceeding the
specified load limit as indicated on the Tire
and Loading Information placard on the
driver's door B-pillar. Overloading the tires
can overheat them, possibly causing a
blowout. Overloading the tires can also result
in handling or steering problems, or brake
failure.
You will find a table of recommended tire
pressures on the Tire and Loading
Information placard on the B-pillar on the
driver's side ( Y page 252). You will find a
table of tire pressures for various operating
conditions on the inside of your vehicle's fuel
filler flap. To test tire pressure, use a suitable tire
pressure gauge. The outer appearance of a
tire does not permit any reliable conclusion Tire pressure
245
Wheels and tires Z

about the tire pressure. On vehicles equipped
with the electronic tire pressure monitoring
system, the tire pressure can be checked
using the on-board computer.
G
WARNING
Should the tire pressure drop repeatedly:
R check the tire for foreign bodies.
R check whether
the wheel is losing air or the
valve is leaking.
R make sure that only a valve cap approved
by Mercedes-Benz is installed on the tire
valve.
Tire pressures that are too low have a
negative effect on vehicle safety, which could
lead you to cause an accident.
Only correct tire pressures when the tires are
cold. The tires are cold when the vehicle has
been parked for at least three hours or driven
for less than 1 mile (1.6 km). The tire
temperature changes depending on the
outside temperature, the vehicle speed and
the tire load. If the tire temperature changes
by 18 ‡ (10 †), the tire pressure changes by
approximately 10 kPa (0.1 bar/1.5 psi). Take
this into account when checking the pressure
of warm tires and only correct the tire
pressure if it is too low for the current
operating conditions. If you check the tire
pressure when the tires are warm, the
resulting value will be higher than if the tires
were cold. This is normal. Do not reduce the
tire pressure to the value specified for cold
tires. The tire pressure would otherwise be
too low.
Observe the recommended tire pressure
specifications for cold tires on the Tire and
Loading Information placard on the B-pillar on
the driver's side.
i The specifications given on the following
Tire and Loading Information placard are
examples. Tire pressure specifications are
vehicle-specific and may deviate from the
data shown here. The tire pressures
applicable to your vehicle can be found on the Tire and Loading Information placard on
your vehicle.
You will find recommended tire pressure
specifications
: for

cold tires and for a fully
loaded vehicle's Tire and Loading Information
placard. The tire pressure information is
applicable to all tires mounted at the factory. Important notes on tire pressure
G
WARNING
If the tire pressure drops repeatedly, check
the tires for punctures from foreign objects
and/or whether

air is leaking from the valves
or from around the rim.
The tire temperature and pressure increase
when the vehicle is in motion. This is
dependent on the driving speed and the load.
If you wish to drive at high speeds of 100 mph
(160 km/h) or higher when this is allowed,
use the tire pressure table on the inside of the
fuel filler flap to set the correct tire pressures
when the tires are cold. If the tire pressure is
not set correctly, this can lead to an excessive
build up of heat and a sudden loss of
pressure.
For more information, contact a qualified
specialist workshop.
i Driving comfort can be impaired if the tire
pressure value recommended in the tire
pressure table for speeds over 100 mph
(160 km/h) is adopted. 246
Tire pressure
Wheels and tires

Increased vehicle weight due to
optional equipment
This is the combined weight of all standard
and optional equipment available for the
vehicle, regardless of whether it is actually
installed on the vehicle or not. Wheel rim
This is
the part of the wheel on which the tire
is mounted. GAWR (Gross Axle Weight Rating)
The GAWR

is the maximum gross axle weight
rating. The actual load on an axle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicle identification plate on the B-pillar on
the driver's side. Speed index
The speed index is part of the tire
identification. It

specifies the speed range for
which the tire is approved. GTW (Gross Trailer Weight)
The GTW is the sum of the weight of a trailer
and the weight of the load, luggage,
accessories etc. on the trailer. GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight
of the vehicle including fuel, tools, the spare
wheel, accessories installed, occupants,
luggage and the drawbar noseweight if
applicable. The

gross vehicle weight must not
exceed the gross vehicle weight rating GVWR
as specified on the vehicle identification plate
on the B-pillar on the driver's side. GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permitted gross
weight of

the fully laden vehicle (weight of the
vehicle including all accessories, occupants,
fuel, luggage and the drawbar noseweight if
applicable). The gross vehicle weight rating is
specified on the vehicle identification plate on
the B-pillar on the driver's side. Maximum
weight of the laden vehicle
The maximum weight is the sum of the curb
weight of the vehicle, the weight of the
accessories, the maximum load and the
weight of

the optional equipment installed at
the factory. Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa is the
equivalent of 1 psi

. Another unit for tire
pressure is bar. 100 kilopascal (kPa) is the
equivalent of 1 bar. Load index
In addition

to the load bearing index, the load
index may also be imprinted on the sidewall
of the tire. This specifies the load bearing
capacity more precisely. Curb weight
The weight of a vehicle with standard
equipment, including the maximum capacity
of fuel, oil and coolant and also includes the
air-conditioning system and optional
equipment if these are installed on the
vehicle, but does not include passengers or
luggage. Definition of terms for tires and loading
263Wheels and tires Z

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). Genuine Mercedes-Benz parts
All Mercedes-Benz

Centers maintain a supply
of genuine Mercedes-Benz parts for
necessary service and repair work. In
addition, strategically located parts delivery
centers provide quick and reliable parts
service.
More than 300,000 different genuine
Mercedes-Benz parts are available for
Mercedes-Benz models.
Genuine Mercedes-Benz parts are subject to
strict quality control. Each part has been
specially developed, manufactured or
selected for Mercedes-Benz vehicles and
fine-tuned for them.
Only genuine Mercedes-Benz parts should
therefore be used.
! The use of non-approved parts could
impair the vehicle's safety. For this reason,
Mercedes-Benz recommends genuine
Mercedes-Benz parts and approved
conversion parts and accessories for your
vehicle model. H
Environmental note
Daimler
AG also supplies reconditioned major
assemblies and parts which are of the same
quality as

new parts. They are covered by the
same Limited Warranty entitlements as new
parts. Always specify the vehicle identification
number (VIN) (
Y page 271) and the engine
number (

Y page 272) when ordering genuine
Mercedes-Benz parts. Warranty
The Service and Warranty Information
booklet contains detailed information about
the warranties covering your vehicle.
Your authorized Mercedes-Benz Center will
exchange or repair any defective parts
originally installed in the vehicle in
accordance with the terms of the following
warranties:
R New Vehicle Limited Warranty
R Emission System Warranty
R Emission Performance Warranty
R California, Connecticut, Maine,
Massachusetts, New York, Pennsylvania,
Rhode Island and Vermont Emission
Control System Warranty
R State warranty enforcement laws (Lemon
Laws)
Replacement parts and accessories are
covered by the Mercedes-Benz Parts and
Accessories warranties. You can obtain
information about this from any authorized
Mercedes-Benz Center.
i Should you lose your Service and
Warranty Information booklet, have an
authorized Mercedes-Benz Center arrange
for a replacement. It will be mailed to you. 270
Warranty
Technical data

Engine oil
Please bear the following in mind The engine oils are matched to the
performance of Mercedes-Benz engines and
service intervals. For this reason, only use
engine
oils
and oil filters that are approved for
vehicles with a service system.
For a list of approved engine oils and oil filters,
consult an authorized Mercedes-Benz Center
or go to the Internet site
http://bevo.mercedes-benz.com (USA
only).
! Never use engine oil or an oil filter of a
specification other than is necessary to
fulfill the prescribed service intervals. Do
not change the engine oil or oil filter in
order to achieve longer replacement
intervals than those prescribed. You could
otherwise cause engine damage or damage
to the exhaust gas aftertreatment.
Follow the instructions in the service
interval display regarding the oil change.
Otherwise, you may damage the engine and
the exhaust gas aftertreatment.
The table shows which engine oils have been
approved for your vehicle. Model Engine
model MB
Approval
G 550 273 229.5
G 55 AMG 113 229.5
i
MB approval is indicated on the oil
containers.
Additives !
Do not

use any additives in the engine oil.
This could damage the engine.
Engine oil viscosity Viscosity describes the flow characteristics
of
a

fluid. If an engine oil has a high viscosity, this means that it is thick; a low viscosity
means that it is thin.
Select an engine oil with an SAE (viscosity)
classification suitable for the prevailing
outside temperatures. The following table
shows the correct SAE classification to be
used.
The

low-temperature characteristics of
engine oils can deteriorate significantly, e.g.
as a result of aging, soot and fuel deposits. It
is therefore strongly recommended that you
carry out regular oil changes using an
approved engine oil with the appropriate SAE
classification. Refrigerant of the air-conditioning
system
The air-conditioning system is filled with
R134a (HFC) refrigerant and a special PAG
lubricant.
! Never use refrigerant R 12 (CFC) or
mineral lubricants. Otherwise, you could
damage the air-conditioning system. Brake fluid
G
WARNING
The brake fluid constantly absorbs moisture
from the air; this lowers its boiling point.
If the

boiling point of the brake fluid is too low,
vapor pockets may form in the brake system
when the brakes are applied hard (e.g. when
driving downhill). This would impair braking
efficiency. Service products and capacities
275
Technical data
Z