Heating / Air Conditioning Control

Removal and installation

1. Unclip cover.





2. Unscrew fastening screws (2 ea.) and pull the heating/air conditioning control out of the dashboard.

3. Disconnect the plug connections


Adaptation of new Control Panel

NOTE: Basic adaptation to the system must be performed with a new heating/air conditioning control. This is indicated by flashing of the displays for approx. 5 to 10 seconds each time the ignition is switched on.

Basic adaptation is performed during the system test.

Performing system test
1. Connect and switch on the Porsche System Tester 2.
2. Select air conditioning and menu item "System test".

The following conditions must be observed for the system test:
- Vehicle speed < 10 km/h
- Engine start detected and 10 seconds elapsed since engine start
- Terminal 15 supply voltage OK
- 5 Volt supply voltage OK
- Engine temperature < 110 °C
- Outside temperature > 3 °C

The following tests are performed:
- Display of all segments in the control module
- The drive motors are traversed across the entire range once
- The measured positioning travel is subjected to a plausibility test and stored as a fault if necessary
- Two different voltage values are set on the fresh-air fan and tested
- The A/C circuit is tested via the DME
- All fault paths are tested, and any faults are stored

Basic adaptation has been completed after the system test. The display must no longer flash.