Parking In Extremely Cold Condi Tions - Mercedes-Benz Unimog Operating Instructions Manual

Winter operation
222
Before the journey
Before the onset of winter, make sure that:
the coolant contains sufficient antifreeze
R
Y
protection (
the fuel used is suitable for winter use
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( Y page 364)
when using single-grade engine oils,
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replacement is completed in good time
( Y page 361)
the windscreen washer system contains
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sufficient antifreeze (
tyres with a high-grip tread pattern are fit-
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ted; if possible, these should be M+S tyres
(winter tyres)
snow chains are carried in the vehicle
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Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
X
When driving on snow, slush and on icy
roads fit snow chains in good time
( Y page 223).
While the vehicle is in motion
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres.
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Adapt your driving style to suit the road
conditions.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
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Shift the transmission into neutral.
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Try to bring the vehicle under control by
using corrective steering.
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
There is a delay in displaying a change in out-
side temperature.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges. The
vehicle could start skidding if you fail to adapt
your driving style. Always adapt your driving
page 362)
Y
page 296)
style and drive at a speed to suit the prevailing
weather conditions.
You should pay particularly close attention to
road conditions as soon as temperatures
approach freezing.
Windscreen
At temperatures between approximately 5 †
to Ò5 † and snowfall, direct the air to the
windscreen using the air-distribution control
z ( Y page 101). Additionally, the wind-
screen heating can be switched on
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( page 90).
Driving in extremely cold conditions
At outside temperatures below Ò20 †:
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Make sure that there is adequate brake
system reservoir pressure (
and that the operating temperature of the
coolant ( Y page 125) has been reached.
X
Avoid placing heavy loads on the engine
when pulling away.
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Shift gear early and avoid high engine
speeds.
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Warm the vehicle up for approximately
20 minutes before increasing the load.
Parking in extremely cold conditions
If the vehicle is parked at outside tempera-
tures of below Ò30 †, it cannot be guaranteed
that the engine will start, even with the cold-
climate package. Mercedes-Benz advises
against parking the vehicle outdoors at out-
side temperatures of below Ò30 †.
Y page 161)