Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Porsche Boxster (987) F6-2.9LFACTORY OEM SERVICE PROCEDURE
Body Control Module: Service and Repair
WM 578919 Removing and installing control unit for rear convenience systems
Tools
Programming control unit for rear convenience systems
Reading from and writing to the rear convenience system control unit
WARNING
Sudden voltage interruption of the power supply to the control module.
- Destruction of the control module.
-> During programming, it is essential to guarantee the power supply for the Porsche System tester. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.
-> Prior to disconnecting the control module, switch off the ignition and remove the ignition key.
Information
The PIWIS Tester 9718 instructions take precedence since the description may be different with later Tester releases.
The procedure described here has been structured in general terms; different text or additions may appear in the PIWIS Tester 9718.
1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition. >> Continue.
2. Select the vehicle type.
3. Switch from the vehicle type to the list of control units.
4. Select Rear with the cursor keys and press the >> key.
5. Select Control unit replacement with the cursor keys and press the >> key.
6. Select Read out values (codings) with the cursor keys and press >>.
7. The message Codes successfully read out appears on the screen of the Porsche System Tester. Press >>.
8. Switch off ignition and replace control unit=> Removing and installing control unit for rear convenience systems - removing
9. Switch to the Special functions menu and perform vehicle handover by pressing F8.
10. Erase all fault memories in the Special functions menu and press >>.
11. Carry out automatic search of control units.
12. Switch to the Write in data menu and press >> to load the data that was read out.
13. System Tester displays Coding write-in complete >>.
14. Change to the Coding menu and compare the coding with the vehicle equipment. Recode if necessary.
15. Exit the menu, carry out a test drive and read out the fault memory.
Coding control unit for rear convenience systems
WARNING
Sudden voltage interruption of the power supply to the control module.
- Destruction of the control module.
-> During programming, it is essential to guarantee the power supply for the Porsche System tester. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.
-> Prior to disconnecting the control module, switch off the ignition and remove the ignition key.
Information
The PIWIS Tester 9718 instructions take precedence since the description may be different with later Tester releases.
The procedure described here has been structured in general terms; different text or additions may appear in the PIWIS Tester 9718.
Information
The procedure described must be applied when a control unit has to be replaced and the tester function Control unit replacement cannot be used.
1. Connect the PIWIS tester 9718 to the vehicle and start it. Switch on the ignition. >> Continue.
2. Select the vehicle type.
3. Switch to the Special functions menu and perform vehicle handover by pressing F8.
4. Erase all fault memories in the Special functions menu and press >>.
5. Carry out automatic search of control units.
6. Using the >> key, move from the vehicle type to the list of control units.
7. Select Rear end and press the >>.
8. Select Coding and press the >>.
9. Select Automatic transmission and code with F8.
10. Select Vehicle type and code with F8.
11. Select Rear wiper and code with F8.
12. Select Targa roof and code with F8.
13. Select Convertible top and code with F8.
14. Select Steel tilt/slide sunroof and code with F8.
15. Select Spoiler function and code with F8.
16. Select Country coding and code with F8.
17. Take a test drive, read out the fault memory and erase it if necessary.
18. Rear control unit is now taught.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.