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UNDERSTANDING YOUR INSTRUMENT PANEL 131
4
HEATER BOOSTER
The switch (1) for activating the
heater booster system is located in
the center section of the dashboard.
The heater booster system can be
switched on while the vehicle is
being driven to help the engine to
reach its normal operating
temperature more quickly, which
will help to heat up the passenger compartment as
quickly as possible when the heating is switched on.To switch on with the engine running:
Press switch (1), the indicator lamp (2) lights up.
To switch off:
Press switch (1) again or switch the engine off. The
heater booster will then switch to run-on mode (about
2minutes).
NOTE: When the vehicle is being driven and a coolant
temperature of over 185 °F (+80 °C) is reached, the
heater booster system will switch to regulation mode.
If the coolant temperature drops to below 167 °F
(+75 °C) with the heater booster system switched on,
heat output is increased again.
If the key is turned to position 0 in the ignition lock
(run-on for about 2 minutes), the last setting selected at
switch (1) is retained when the engine is restarted
(memory function).
The operation of the heater booster system is usually
not required at outside temperatures above 41 °F
(+5 °C).
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UNDERSTANDING YOUR INSTRUMENT PANEL 139
4
NOTE: Only on vehicles with automatic heater
control/regulated air conditioner:
Before switching on the heater or entering the switch-
on time, the temperature control (1) must be set to
maximum heater output (as illustrated).
Set the air distribution control (3) as required between
Y and Z.
AUXILIARY HEAT EXCHANGER IN LOAD
COMPARTMENT, ONLY WITH AUXILIARY HEATER
(OPTIONAL)
The auxiliary heat exchanger switch
is located on the right next to the
steering column.To switch on at blower speed 1:
Press the upper section, the left-hand indicator lamp in
the switch lights up.
To switch on at blower speed 2:
Press the lower section, the right-hand indicator lamp
in the switch lights up.
To switch off :
Press the switch to the middle position.
Operation is only possible when the key is turned to
position 2 in the ignition lock.
NOTE: The auxiliary heat exchanger in the load
compartment should be switched off at coolant
temperatures below 176 °F (+80 °C) to quickly de-fog
and de-ice the windshield and front side windows.
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STARTING AND OPERATING 201
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Bead
The tire bead contains steel wires wrapped by steel
cords that hold the tire onto the rim.
Cold Tire Inflation Pressure
Tire inflation pressure when your vehicle has been
sitting for at least 3 hours or d r i v e n n o m o r e t h a n 1 m i l e
(1.6 km).
Curb Weight
The weight of a motor vehicle with standard
equipment including the maximum capacity of fuel,
oil, and coolant, and, if so equipped, air conditioning
and additional optional equipment, but without
passengers and cargo.
DOT (Department of Transportation)
A tire branding symbol which denotes the tire meets
requirements of the U.S. Department of
Transportation.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum permissible axle weight.
The gross vehicle weight on each axle must never
exceed the GAWR for the front and rear axle indicatedon the Certification Label located below the driver’s
seat on an outward facing position of the mounting
pillar.
GTW (Gross Trailer Weight)
The GTW is the weight of the trailer plus the weight of
all cargo, equipment, luggage etc. loaded on the trailer.
GVW (Gross Vehicle Weight)
The GVW comprises the weight of the vehicle
including fuel, tools, spare wheel, installed accessories,
passengers and cargo and, if applicable, trailer tongue
load. The GWV must never exceed the GWVR
indicated on the Certification Label located below the
driver’s seat on an outward facing position of the
mounting pillar.
GVWR (Gross Vehicle Weight Rating)
This is themaximum permissible vehicle weight of the
fully loaded vehicle (weight of the vehicle including all
options, passengers, fuel, and cargo and, if applicable,
trailer tongue load). It is indicated on the Certification
Label located below the driver’s seat on an outward
facing position of the mounting pillar.
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226 STARTING AND OPERATING
WARNING!
Take into consideration that when towing a trail-
er, the handling characteristics are different and
less stable from those when operating the vehicle
without a trailer.
It is important to avoid sudden maneuvers.
Sudden maneuvers may lead to loss of control
over the vehicle-trailer combination. This could
cause an accident resulting in property damage or
injury to you or others.
CAUTION!
If the transmission hunts between gears on
inclines, manually shift to a lower gear (select
"4",
"3", "2" or"1"). A lower gear and reduction of
speed reduces the chance of engine overloading
and / or overheating.
When going down a long hill, shift into a lower
gear and use the engine’s braking effect. Avoid
riding the brakes, thus overheating the vehicle
and trailer brakes.
If the engine coolant rises to an extremely high
temperature (coolant temperature needle
approaching the red zone) when the air
conditioner is on, turn off the air conditioner.
Engine coolant heat can be additionally vented by
opening the windows, switching the climate
control fan speed to high and setting the
temperature control to the maximum hot position.
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