width MERCEDES-BENZ G-Class 2012 W463 Owner's Manual

Adjust the seat belt so that the upper part
of the belt is as close as possible to the
center of the shoulder. It should not touch
the neck. Never route the belt under the
shoulder. The height of the belt outlet can
be altered to ensure correct usage.
R The lap belt should be routed as low as
possible across the hips, not across the
abdomen. If
the lap belt is routed across the
abdomen, it could cause serious injuries in
the event of an impact.
R Never route the seat belt over rigid or
fragile objects in or on your clothing, such
as eyeglasses, pens, keys etc, as this could
cause injuries.
R Always ensure that the seat belt is routed
correctly. This is particularly important if
you are wearing loose clothing.
R Only one person should use each seat belt
at any one time. Never use a seat belt to
restrain more than one person or route the
belt around additional objects.
R Never wear seat belts when they are
twisted. Otherwise, in the event of an
impact, the full width of the seat belt is
unavailable to distribute the force of the
impact. The twisted seat belt routed across
your body could cause injuries.
R Pregnant women should also wear a three-
point seat belt. The lap belt must always
pass across your lap as low down as
possible, i.e. across your hips; not across
your abdomen.
R The seat backrest should be set as close to
vertical as possible.
R Check the seat belt during the journey in
order to make sure that it is correctly
positioned.
R Never rest your feet on the dashboard or
the seat. Always keep both feet on the floor
in front of the seat.
R When using a seat belt to secure an infant
restraint system, child restraint system or
a child on a booster seat, always follow the
child seat manufacturer's instructions. G
WARNING
Do
not pass seat belts over sharp edges. They
could tear.
Do not

allow the seat belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the seat belt.
Never attempt to make modifications to seat
belts. This could impair the effectiveness of
the seat belts.
Fastening seat belts Important safety notes
G
WARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than

on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
A child's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint. G
WARNING
Children 12 years old and under must never
ride in the front seat, except in a Mercedes-
Benz authorized BabySmart™ compatible
child seat, which operates with the
BabySmart™ system installed in the vehicle
to deactivate

the front passenger front air bag
when it is installed properly. Otherwise they
will be struck by the air bag when it inflates in
a crash. If this happens, serious or fatal injury
will result. Occupant safety
43
Safety Z

Notes on regularly inspecting wheels
and tires
G
WARNING
Regularly check the tires for damage.
Damaged tires can cause tire inflation
pressure loss. As a result, you could lose
control of your vehicle.
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.
R Regularly check the wheels and tires of
your vehicle for damage (e.g. cuts,
punctures, tears, bulges on tires and
deformation or cracks or severe corrosion
on wheels) at least once a month, as well
as after driving off-road or on rough roads.
Damaged wheels can cause a loss of tire
pressure.
R Regularly check the tire tread depth and
the condition of the tread across the whole
width of the tire (Y page 243). If necessary,
turn the front wheels to full lock in order to
inspect the inner side of the tire surface.
R All wheels must have a valve cap to protect
the valve against dirt and moisture. Do not
install anything onto the valve (such as tire
pressure monitoring systems) other than
the standard valve cap or other valve caps
approved by Mercedes-Benz for your
vehicle.
R You should regularly check the pressure of
all your tires including the spare wheel,
particularly prior to long trips. Adjust the
tire pressure as necessary ( Y page 245).Tire tread
G
WARNING
Although
the applicable federal motor vehicle
safety laws consider a tire to be worn when
the tread wear indicators (TWI) become
visible at approximately 1
/ 16 in (1.6 mm), we
recommend that you do not allow your tires to wear down to that level. As tread depth
approaches
1
/ 8 in (3 mm), the adhesion
properties on

a wet road are sharply reduced.
Depending upon the weather and/or road
surface (conditions), the tire traction varies
widely.
Do not use tires that are excessively worn as
the tire traction on wet road surfaces
decreases significantly when the tread depth
is less than 1
/ 8 in (3 mm).
Tread wear indicators (TWI) are required by
law. Six indicators are positioned over the tire
tread. They are visible as soon as a tread
depth of approximately 1
/ 16 in (1.6 mm) is
reached. If this is the case, the tire is so worn
that it must be replaced.
The recommended tread depth for summer
tires is at least 1
/ 8 in (3 mm). The
recommended tread depth for winter tires is
at least 1
/ 6 in (4 mm). Indicator
: for tread wear is integrated into
the tire tread. Notes on selecting, mounting and
replacing tires
R Only mount tires and wheels of the same
type and make.
R Only mount tires of the correct size onto
the wheels.
R After mounting new tires, run them in at
moderate speeds for the first 60 miles Operation
243
Wheels and tires Z

i
The actual values for tires are vehicle-
specific and
may deviate from the values in
the illustration.
Maximum tire load : is the maximum
permissible weight for which the tire is
approved.
Further information on tire loads
(Y page 258). Uniform Tire Quality Grading
Standards
Overview of Tire Quality Grading
Standards
The Uniform Tire Quality Grading Standards
are U.S. government specifications. Their
purpose is to provide drivers with uniform
reliable
information

on tire performance data.
Tire manufacturers have to grade tires using
three performance factors: tread wear :,
tire traction ;, and heat resistance =. All
tires sold in North America are provided with
the corresponding quality grading markings on the sidewall of the tire, even though these
regulations do not apply to Canada.
i
The actual values for tires are vehicle-
specific and

may deviate from the values in
the illustration.
Where applicable, the tire grading
information can be found on the tire sidewall
between the tread shoulder and maximum
tire width.
For example: Tread wear Traction Temperature
200 AA A
All passenger car tires must conform to the
statutory safety requirements in addition to
these grades.
Tread wear
The tread

wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
U.S. government test track. For example, a
tire graded 150 would wear one and one-half
times as well on the government test track as
a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly from
the norm, due to variations in driving habits,
service practices and differences in road
characteristics and climate conditions. Traction
G
WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.
The traction grades, from highest to lowest,
are AA, A, B, and C. Those grades represent Uniform Tire Quality Grading Standards
257
Wheels and tires Z

D
Load index ( Y page 261)
E Tire name
i Tire data is vehicle-specific and may
deviate from the data in the example. Tire size designation, load-bearing
capacity and speed rating
:
Tire width
; Nominal aspect ratio in %
= Tire code
? Rim diameter
A Load bearing index
B Speed rating
i Tire data is vehicle-specific and may
deviate from the data in the example.
General: depending on the manufacturer's
standards, the size imprinted in the tire wall
may not contain any letters or may contain
one letter
that precedes the size description.
If there is no letter preceding the size
description (as shown above): these are
passenger vehicle tires according to
European manufacturing standards.
If "P" precedes the size description: these are
passenger vehicle tires according to U.S.
manufacturing standards.
If "LT" precedes the size description: these
are light truck tires according to U.S.
manufacturing standards.
If "T" precedes the size description: these are
compact emergency spare wheels at high tire pressure, to be used only temporarily in an
emergency.
Tire width:
tire width : shows the nominal
tire width in millimeters.
Nominal aspect

ratio: aspect ratio ; is the
ratio between the tire height and tire width
and is shown as a percentage. The aspect
ratio is calculated by dividing the tire width by
the tire height.
Tire code: tire code = specifies the tire type.
"R" represents radial tires. "D" represents
diagonal tires, "B" represents diagonal radial
tires.
Optionally, tires with a maximum speed of
over 149 mph (240 km/h) may have "ZR" in
the size description depending on the
manufacturer (e.g. 245/40 ZR 18).
Rim diameter: rim diameter ? is the
diameter of the bead seat, not the diameter
of the rim flange. The rim diameter is
specified in inches (in).
Load bearing index: load bearing index A
is a numerical code that specifies the
maximum load-bearing capacity of a tire. G
WARNING
The tire load rating must always be at least
half of the GAWR of your vehicle. Otherwise,
sudden tire failure may be the result which
could cause

an accident and/or serious injury
to you or others.
Always replace rims and tires with rims and
tires having the same specifications
(designation, manufacturer and type) as
shown on the original part. G
WARNING
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. Tire labeling
259
Wheels and tires Z

Maximum tire load
The maximum tire load is the maximum
permissible weight in kilograms or lbs for
which a tire is approved. Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire. Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing
the maximum axle load of one axle
by two. PSI (pounds per square inch)
Standard unit of measurement for tire
pressure. Aspect ratio
Relationship between tire height and tire
width in percent. Tire pressure
This is pressure inside the tire applying an
outward force to every square inch of the
tire's surface.

The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold. For this,
the vehicle must have been stationary for at
least 3 hours or not have traveled more than
1.6 km (1 mile) in this time. Tire tread
The part of the tire that comes into contact
with the road. Tire bead
The tire bead ensures that the tire sits
securely on

the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim. Sidewall
The part

of the tire between the tread and the
tire bead. Weight of optional extras
The combined

weight of those optional extras
that weigh more than the replaced standard
part and more than 2.3 kg (5 lbs). These
optional extras, such as high-performance
brakes, level control, a roof rack or a high-
performance battery, are not included in the
curb weight and the weight of the
accessories. TIN (Tire Identification Number)
This is a unique identification number which
can be

used by a tire manufacturer to identify
tires, for example for a product recall, and
thus identify the purchasers. The TIN is made
up of the manufacturer's identity code, tire
size, tire type code and the manufacturing
date. Load bearing index
The load bearing index (also load index) is a
code that

contains the maximum load bearing
capacity of a tire. Traction
Traction is the result of friction between the
tires and the road surface. 264
Definition of terms for tires and loading
Wheels and tires

Cooling system
Vehicle
model Antifreeze protection
Approx.
-35 ‡
(-37 †) Approx.
-49 ‡
(-45 †)
G 550 6.4 US qt
(6.05 l) 7.1 US qt
(6.7 l)
G 55 AMG 6.7 US qt
(6.35 l) 7.4 US qt
(7.0 l)
Windshield/headlamp cleaning
system
G
WARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on
hot engine parts, because it may
ignite and burn. You could be seriously
burned.
X Use windshield washer concentrate MB
SummerFit.
X At temperatures above freezing: add 1
part MB

SummerFit to 100 parts water, e.g.
1.34 fl oz (40 ml) MB SummerFit to 1 gal
(4.0 l) of water.
X At temperatures below freezing: add 1
part MB SummerFit to 100 parts washer
fluid, e.g.

1.34 fl oz (40 ml) MB SummerFit
to 1 gal (4.0 l) of water. Vehicle data
Vehicle data, G 550 (463.237)
The data stated here refers specifically to a
vehicle with standard equipment. Consult an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels. Vehicle dimensions, G 550
Vehicle length
22 183.9 in
(4672 mm) Vehicle width
including exterior
mirrors
79.0 in (2007 mm)
Vehicle height
76.8 in (1951 mm)
Wheelbase
112.2 in ( 2850 mm)
Track width
59.7 in (1515 mm)
Ground clearance,
front
9.1 in (232 mm)
Ground clearance,
rear
8.8 in (223 mm)
Turning circle
44.6 ft (13.6 m)
Vehicle weights, G 550
Gross Vehicle
Weight Rating
(GVWR)
23 6615 lbs (3000 kg)
Gross Axle
Weight Rating
(GAWR), front
24 3110 lbs (1410 kg)
Gross Axle
Weight Rating
(GAWR), rear
24 3965 lbs (1800 kg)
Vehicle data, G 55 AMG (463.271)
The data stated here refers specifically to a
vehicle with standard equipment. Consult an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
22 Including spare wheel.
23 GVWR is the maximum total vehicle weight permissible. Gross Vehicle Weight (GVW) is the vehicle weight
including fuel, service products, spare wheel, accessories installed, load and, if applicable, trailer drawbar
load. The GVW must never exceed the GVWR.
24 The GAWR is the maximum gross axle weight rating. Vehicle data
277Technical data Z

Vehicle dimensions
Vehicle length
183.9 in
(4672 mm) 25
188.2 in
(4780 mm) 26Vehicle width
including exterior
mirrors
79.0 in (2007 mm)
Vehicle height
76.8 in (1951 mm)
Ground clearance
9.2 in (234 mm)
Wheelbase
112.2 in (2850 mm)
Track width
59.1 in (1501 mm)
Turning circle
44.6 ft (13.6 m)
Vehicle weights
Gross Vehicle
Weight Rating
(GVWR)
27 6615 lbs (3000 kg)
Gross Axle Weight
Rating (GAWR),
front
28 3263 lb (1480 kg)
Gross Axle Weight
Rating (GAWR),
rear
28 3965 (1800 kg)
25
Including spare wheel.
26 Including spare wheel and styling bar (USA only).
27 GVWR is the maximum total vehicle weight permissible. Gross Vehicle Weight (GVW) is the vehicle weight
including fuel, service products, spare wheel, accessories installed, load and, if applicable, trailer drawbar
load. The GVW must never exceed the GVWR.
28 The GAWR is the maximum gross axle weight rating.278
Vehicle dataTechnical data