Mercedes-Benz 2013 GL Class - Manual (Page 187)

Fording
depth
Off-road level 2 20 in
(50 cm)
Off-road level 1 20 in
(50 cm)
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Establish how deep the water is and the
characteristics of the body of water before
fording.
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Vehicles with the AIRMATIC package:
select the highest possible vehicle level.
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Restrict the shift range to 1 or 2.
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Avoid high engine speeds.
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Enter and exit the water at a flat place and
at a steady walking pace.
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Drive slowly and at an even speed through
the water.
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Do not stop.
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Water offers a high degree of resistance,
and the ground is slippery and in some
cases unstable. Therefore, it is difficult and
dangerous to pull away in the water.
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Ensure that a bow wave does not form as
you drive.
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Clean any mud from the tire tread after
fording.
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Apply the brakes to dry them after fording.
Winter driving
General notes
G
WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on a slippery road surface.
G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open
a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
i Vehicles with a diesel engine: do not
cover the radiator, e.g. with a protective
cover. The measuring function of the
onboard diagnosis system may otherwise
provide inaccurate values. Some of these
values are required by law and must
therefore always be accurate.
Observe the notes in the "Winter operation"
section (
Y page 396).
Driving with summer tires
Observe the notes in the "Winter operation"
section (
Y page 396).
Slippery road surfaces
G
WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on a slippery road surface.
G
WARNING
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Driving tips
185
Driving and parking
Z