Air Conditioning, Parking Heater and Heated Rear Window 89
REST mode
Using engine residual heat
The residual heat of the engine can be used to
heat the interior up to 20 minutes after the ignition
has been switched off.
f Press button.
The air-conditioning settings cannot be chan-
ged in REST mode.
Ending the function
f Press button.
Note on operation
If the battery voltage is too low, REST mode is
automatically ended.
Information on air-conditioning
compressor
The air-conditioning compressor:
– May switch off briefly to ensure sufficient
engine cooling if the engine is operating under
extreme load.
– Switches off automatically at temperatures
below approx. 37.4 °F (3 °C) and cannot be
switched on, even manually.
– Operates most effectively with windows
closed.
If the car has been in the sun for a long time,
however, it is a good idea to ventilate the
interior briefly with the windows open.
– Depending on the outside temperature and
humidity, condensation can drip from the
evaporator and form a pool under the car.
This is normal and not a sign of leakage.
– If uncooled air flows out when the lowest
temperature has been set (“LO”), switch off the
air-conditioning compressor and have the fault
remedied at an authorized Porsche dealer.
Sensors
To avoid affecting the performance of the air-con-
ditioning system:
f Do not cover the sun sensor on the dashboard
and the temperature sensor F in the front con-
trol panel of the air-conditioning system.
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