Defrost Program (Automatic System Only)
WARNING: This page is about a different car, the 2006 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
When the defrost program is selected the ATC module:
- Opens the windshield distribution doors and closes the face and footwell doors.
- Sets the recirculation doors to the fresh air position.
- Runs the blower at speed 7.
- Activates the A/C compressor.
- Activates the HRW.
- Activates the heated windshield (where fitted).
When the ambient temperature is 10°C (50°F) and below, the ATC module signals the coolant valves to remain open. When the ambient temperature is more than 10°C (50°F), the ATC module checks the existing heater core temperature and, if necessary, increases the open time of the coolant valves to produce a minimum heater core temperature of 30°C (86°F).
The defrost program is cancelled by pressing the defrost switch again, or pressing the automatic, air conditioning (A/C) or maximum air conditioning (A/C) switches