Control Assembly: Service and Repair

WM 870219 Removing and installing front air-conditioning system regulator

Removing front air-conditioning system regulator

Information

- Before removing the air-conditioning system regulator, the selector lever must be pulled back for vehicles with automatic transmission. Press the brake pedal for this purpose.

- Then switch off ignition and remove ignition key.





Overview of front air-conditioning system regulator

1. Use a plastic spatula to carefully unclip the covering frame, starting from the bottom left and right.





Unclipping the covering frame

2. Use two screwdrivers to lever out the left and the right latch, then remove the control.





Levering out the latch and removing the control

3. Press in latch of electrical plugs and pull the plugs up and off.





Pulling off plug

Installing front air-conditioning system regulator

1. Insert electrical plugs in the air-conditioning control until they are felt to engage.





Inserting the connectors

2. Carefully slide the control into the installation slot, paying attention to the electrical leads. The left and right latches must engage.





Pushing in and engaging the control

3. Fit the covering frame and press into place until it is felt to engage.





Fitting the covering frame

Coding air-conditioning regulator

Information

- If the control unit for the air-conditioning control system is replaced, it must be programmed using the Porsche System Tester. This adapts the control unit to the vehicle and equipment.

- Before the control unit is removed and replaced, a read-out of the codes must be obtained from the Porsche System Tester (if possible).

- During coding, it is essential to guarantee the power supply for the Porsche System Tester. A battery charger with a current rating of at least 40 A must be connected to the vehicle battery.

- Symbol for the Tab key = =>|

- The Porsche System Tester instructions take precedence and in the event of a discrepancy these are the instructions that must be followed. Deviations may occur with later software versions.

- The procedure described here has been structured in general terms; different text or additions may appear in the Porsche System Tester.

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition. >> Continue.
2. Select vehicle type using the cursor keys. >> continue.
3. Carry out automatic search of control units.
4. Select Air conditioning with the cursor keys and press the >> key.
5. Select Calibration with the cursor keys and press the >> key.
6. Follow the instructions on the Tester.
7. Select Coding and activate with the >> key.
8. Select the corresponding equipment variant with the cursor keys and write coding with F8.
9. Follow the instructions on the Tester.
10. Quit menu, switch off ignition, switch it back on, and read out fault memory once more.