Rear A/C

Operation
The rear A/C is controlled by the Automatic Climate Control (ACC) control module. Depending on outside temperature and solar intensity, rear A/C is switched on and off.

When the ACC control module automatically selects rear A/C on, the LED beside the "REAR" button on the ACC panel lights.

One press on "REAR" switches off the rear A/C unit. ACC still displays "AUTO" and functions as an ACC system with front A/C only. If "REAR" is pressed again, the rear A/C comes on again, provided the electronics consider it necessary to achieve the selected temperature.

Fan speed can, as previously, be increased or decreased as desired. If rear A/C is off, only front fan speed is changed.

If "REAR" is pressed at the same time as one of the buttons for increasing or decreasing fan speed, only rear fan speed increases or decreases. Speed is fixed at that speed at which the fan is running when the buttons are released. Only the front fan will be controlled automatically. Further manual raising or lowering of fan speed only affects the front fan. Returning to / from manual selection to automatic control is, as previously, achieved by pressing the "AUTO" button.

The rear A/C unit can even be started if the control module has chosen to leave it off. By simultaneously pressing "REAR" and the button for increasing fan speed, the rear fan starts. At the same time, the solenoid valve opens so that refrigerant is allowed to the rear evaporator. The anti-freeze thermostat then evaluates whether the compressor should start working and cooling start.