Power Supply - Mercedes-Benz G-Class Operator's Manual

Towing a trailer
168
The maximum noseweight of the trailer drawbar
on the ball coupling for up to 3 people is 562 lbs
(255 kg). The maximum permissible trailer draw-
bar noseweight for more than 3 persons and the
maximum load in the trunk can be found in the
trailer drawbar noseweight table (
However, the actual noseweight must not
exceed the value given on the trailer tow hitch or
trailer identification plates. The lowest weight
applies.
Please note that when towing a trailer,
PARKTRONIC (
Y
Assist ( page 154) are only available with lim-
Y
itations, or not at all.
i
On vehicles without level control, the height
of the ball coupling will alter according to the
load placed on the vehicle. If necessary, use a
trailer with a height-adjustable drawbar.
Driving tips
On long and steep downhill gradients, select
X
shift range 1, 2 or 3 (
time.
i
This also applies if you have activated cruise
control or SPEEDTRONIC.
If necessary, shift the transfer case to LOW
X
RANGE ( page 162).
Y
This will use the braking effect of the engine,
so that less braking will be required to main-
tain the speed. This relieves the load on the
brake system and prevents the brakes from
overheating and wearing too quickly. If you
need additional braking, depress the brake
pedal repeatedly rather than continuously.
The maximum permissible speed for vehicle/
trailer combinations depends on the type of
trailer. Before beginning the journey, check the
trailer's documents to see what the maximum
permissible speed is. Observe the legally pre-
scribed maximum speed in the relevant country.
For certain Mercedes-Benz vehicles, the maxi-
mum permissible rear axle load is increased
when towing a trailer. Refer to the "Technical
data" section to find out whether this applies to
your vehicle. If you utilize any of the added max-
imum rear axle load when towing a trailer, the
vehicle/trailer combination may not exceed a
maximum speed of 60 mph (100 km/h) for rea-
sons concerning the operating permit. This also
applies in countries in which the permissible
maximum speed for vehicle/trailer combina-
tions is above 60 mph (100 km/h).
page 298).
Y
page 158) and Blind Spot
page 123) in good
Y
When towing a trailer, your vehicle's handling
characteristics will be different in comparison to
when driving without a trailer and it will con-
sume more fuel.
On long and steep downhill gradients, you must
select shift range 1, 2 or 3 in good time.
i
This also applies if you have activated cruise
control or DISTRONIC PLUS.
This will use the braking effect of the engine, so
that less braking will be required to maintain the
speed. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly. If you need additional
braking, depress the brake pedal repeatedly
rather than continuously.
Driving tips
If the trailer swings from side to side:
Do not accelerate.
X
Do not counter-steer.
X
Brake if necessary.
X
Maintain a greater distance from the vehicle
R
in front than when driving without a trailer.
Avoid braking abruptly. If possible, brake gen-
R
tly at first to allow the trailer to run on. Then,
increase the braking force rapidly.
The values given for gradient-climbing capa-
R
bilities from a standstill refer to sea level.
When driving in mountainous areas, note that
the power output of the engine and, conse-
quently, the vehicle's gradient-climbing capa-
bility, decreases with increasing altitude.
Trailer power supply
!
You can connect accessories with a maxi-
mum power consumption of 180 W to the
permanent power supply.
You must not charge a trailer battery using the

power supply.

The trailer socket of your vehicle is equipped at
the factory with a permanent power supply.
The permanent power supply is supplied via
trailer socket pin 9.
A qualified specialist workshop can provide
more information about installing the trailer
electrics.