Volvo V70R Owner's Manual page 77

Climate control
Fuel-driven parking heater (option)
IMPORTANT!
Repeated use of the parking heater in
combination with short trips can lead to
battery discharge and thereby difficulty
starting.
If the heater is used regularly, the car
should be driven for the same amount of
time as the heater was used in order to
ensure that the generator is able to pro-
duce enough energy to compensate for
the amount consumed.
Additional heater (diesel)
(certain countries)
Extra heat from the additional heater may be
required in cold weather to reach the correct
temperature in the passenger compartment.
The additional heater starts automatically
when extra heat is required if the engine is
running. It is switched off automatically when
the correct temperature is reached or when
the engine is switched off.
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