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Heating and air conditioning system 137
Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical Data
• The exhaust pipe of the auxiliary heating is located on the
underside of the vehicle. Therefore do not place the vehicle, if you
wish to operate the auxiliary heating, in such a way that the exhaust
gases of the auxiliary heating can come easily into contact with
inflammable materials (e.g. dry grass) or easily inflammable
substances (e.g. fuel run out).
Note
• If the auxiliary heating runs, the fuel consumption comes from the
vehicle tank. Therefore the auxiliary heating should not be operated, if
there is very little fuel in the tank.
• The exhaust pipe of the auxiliary heating, which is located on the
underside of the vehicle, must not be clogged and the exhaust flow must
not be blocked.
• If the auxiliary heating and ventilation is running, the vehicle battery
discharges. If the auxiliary heating and ventilation has been operated
several times over a longer period, the vehicle must be driven a few kilom-
eters in order to recharge the vehicle battery.
• The auxiliary heating only switches the blower on, if it has achieved a
coolant temperature of approx. 50 °C.
• At low outside temperatures, this can result in a formation of water
vapour in the area of the engine compartment. This is quite normal and is
not an operating problem.
• After switching off the auxiliary heating, the coolant pump runs for a
short period.
• The auxiliary heating and ventilation does not switch on or comes on,
if the vehicle battery indicates a low loading state.
• The auxiliary heating (auxiliary heating) switches on, if in the informa-
tion display: Please refuel! is indicated or was indicated before switching
off the ignition.
• When driving, the auxiliary heating can only be switched on, if the exte-
rior temperature is lower than 5 °C.
• The air inlet in front of the windscreen must be free of ice, snow or
leaves in order to ensure that the auxiliary heating operates properly.
• So that the warm air can flow into the vehicle interior after switching on
the auxiliary heating (auxiliary heating), the control dial ⇒ page 119,
fig. 116 must be turned up to the stop to the right when heating. With
Climatic and Climatronic, you can maintain the temperature normally
selected by you (we recommend 22 °C). It is recommended to put the air
flow in the position . For heating and climatic put the blower switch
⇒ page 119, fig. 116 if necessary ⇒ page 124, fig. 119 in the position 2.
WARNING (continued)
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book
Page
137
Thursday
,
November
24
,
2005
12:27
PM
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