Porsche 2007 Cayenne Owner's Manual page 101

Notes on operation
The parking heater runs on fuel, and it therefore
cannot be switched on after the reserve warning
lights up.
f For further information on the fuel reserve
warning:
Please observe the chapter "FUEL RESERVE
WARNING" on Page 142.
The parking heater must be operated at least
once per month with the engine cold.
Ignition off: When the parking heater is running,
the remaining running time is shown on the display
panel.
Operation of the parking heater is clearly audible
when outside temperatures are low and the engine
is cold.
Switching parking heater on and
off
Switching on
f Press ON/OFF button
.
The most recently activated parking heating or
parking ventilation function is switched on.
Switching off
f Press ON/OFF button
again.
Note on operation
f After switching off the parking heater using
ON/OFF button , wait for at least
2 minutes before you press the button again.
The combustion chamber is cleaned.
Air Conditioning, Parking Heater and Heated Rear Window
101