The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It performs the
following tasks:
R corrosion protection
R antifreeze protection
R raising the boiling point
If the coolant has antifreeze protection down to -35 ‡(-37 †), the boiling point of the cool-
ant in the pressurized system is approx-
imately 266 ‡ (130 †).
The antifreeze/corrosion inhibitor concentra- tion in the engine cooling system should:
R be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
R no t exceed 55% (antifreeze protection
down to -49 ‡ [-45 †]). Otherwise, heat
will no t be dissipated as effectively.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor in accordance with MB
Specifications for Service Products 310.1.
i When the vehicle is first delivered, it is fil-
led with a coolant mixture that ensures
adequate antifreeze and corrosion protec-
tion.
i The coolant is checked with every main-
tenance interval at a qualified specialist
workshop.
The engine cooling system is filled with cool-
ant at the factory which contains antifreeze/
corrosion inhibitor that ensures protection
down to approximately -35 ‡ (-37 †).
Your vehicle has a range of aluminum com-
ponen ts. Aluminum components in the
engine make it necessary to use antifreeze/
corrosion inhibitor that has been specifically
formulated to protect the aluminum parts.
Failure to use such anticorrosion/antifreeze
coolant will result in a significantly shortened
service life.
The coolant must be used throughout the year
in order to maintain the necessary corrosion
protection and to provide protection from
overheating. In the Maintenance Booklet, you can find information on the intervals for
renewal.
The renewal interval is determined by the
coolant type and the engine cooling system
design. The renewal interval in the Mainte-
nance Booklet is only valid if the coolant is
renewed or added to with Mercedes-Benz
approved products. Therefore, only use MB
326.0 antifreeze/corrosion inhibitor or
another Mercedes-Benz approved product of the same specification.
Information on other products with the same
specifications that are approved by
Mercedes-Benz can be obtained at an author- ized Mercedes-Benz Center or on the Internet at http://bevo.mercedes-benz.com.
If the coolant level is too low, MB 325.0 anti-
freeze/corrosion inhibitor should be added.
Have the engine cooling system checked for
possible leaks.
Capacity Model Capacity
G 550
Approx. 11.1 US qt
(10.5 l)
G 63 AMG
Approx. 14.6 US qt
(13.8 l)
Low-temperature
circuit: approx-
imately 3.1 US qt
(2.9 l)
i
Use MB 325.0 or MB 326.0 antifreeze/
corrosion inhibitor. Windshield/headlamp cleaning sys-
tem
Important safety notes G
WARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo- Service products and filling capacities
343Technical data
Z
Approach/departure angle
G
WARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
could slip sideways, tip and rollover. There is a risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle. For vehicles with steel springs, loaded and
ready to drive means: a full tank, all fluids
refilled and the driver is in the vehicle.
: : ;
;
G 550
34° 29°
G 63 AMG
27° 27°
For further information about approach/
departure angles, see (Y
page 161).Maximum gradient-climbing capabil-
ity
Note that the vehicle's gradient-climbing
capability depends on the off-road conditions and the road surface conditions.
On good road surfaces the maximum gradi-
ent-climbing capability of your vehicle is
100%, which corresponds to an approach/
departure angle of 45°.
Accelerate carefully and make sure that the
wheels do not spin when driving on steep ter-
rain. i
If the load on the front axle is reduced
when pulling away on a steep uphill slope,
the front wheels have a tendency to spin.
4ETS detects this and brakes the wheels
accordingly. The rear wheel torque is
increased, making it easier to drive off.
For further information about the maximum
gradient climbing ability, see (Y page 161). Trailer tow hitch
Mounting dimensions
Only have a trailer tow hitch retrofitted at a
qualified specialist workshop.
! If you have a trailer tow hitch retrofitted,
changes to the engine cooling system may
be necessary, depending on the vehicle
type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chas- sis frame. :
Anchorage points
; Overhang dimension
For trailer tow hitches installed at the factory, the overhang dimension including protective
covering is 35.2 in (895 mm). 346
Trailer tow hitchTechnical data
