Add steering wheel heating(Replace steering control module and clock spring)
Porsche only supply ordered functions from factory,if old steering wheel without heating,factory equipped steering control module and clock spring hardware without heating control electric parts and clock spring heating power supply PINs. Fortunately we can replace to heating support steering control and clock spring hardware and active functions if needed.
For add heating function, heated steering wheel and the steering wheel electronics control unit(Clock spring) must also be ordered and activated(VIN-specific enabling code) by PIWIS.For this upgrade will need your VIN number to pursche all active code (997/987 no active code needed).
Porsche 991/981/970/958.1 original with basic steering wheel(None multifunction and non shift peddles) upgrade to multifunction steering wheel ,need replace to new steering control module hardware can activate multifunction success.
1, Replaced to steering control module（Include clock spring) with heating support,991.1/981/958.1 heating and multifunction support steering control module (include clock spring) parts number: 958-652-568-14
997.2 heating and multifunction support steering control module parts number: 997-613-299-02 ,heating support clock spring parts number: 955-652-611-22
2, Buy heating and multifunction enable code,it’s related with VIN
3, Dealership install new steering control module and coding by PIWIS activate multifunction and heating, Steps here https://gpsadapter.us/blogs/installation-guide/add-heating-and-multifunction. Installed new steering control module without coding will get a lot of error messages in instrument display,because many ECUs need communication with steering control module.
4, Gpsadapter install to new steering wheel.
**Replace steering control module need PIWIS to coding and need inquiries your activated functions code(on-board computer,cruise control)in Porsche dealership system by VIN,calibrate steering control module need PIWIS also
This is Porsche official add steering wheel multifunction operating guide,forward for reference
https://drive.google.com/file/d/1tSB_fXsFBPhGUfjxsQaKE2Z7miXLauAD/view?usp=drivesdk
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Replace steering wheel electronics control unit(include clock spring) work procedure:
1 Disconnect battery;
2 Remove drivers's airbag unit;
3 Remove original steering wheel;
4 Replace electronics control unit(Clock spring) and steering-column switch(Only for vehicles without multi-function steering wheel),original steering-column switch of multifunction control can keep connected also;
4.1 Remove steering column casing;
4.2 Remove steering-column switch;
4.3 Install new steering wheel electronics control unit(Clock spring) on the new steering-column switch(Only for vehicles without multi-function steering wheel);
4.4 Install steering-column switch;
4.5 Slide cover(991.552.675.00.1E0)into the steering column casing;
4.6 Install steering column casing;
5 Code control units and calibrate steering angel sensor following step.
5.1 PIWIS Tester must be connected before switching on the ignition.Write basic coding from PCM.
5.1.1 Select Steering wheel electronics control unit. Press •F11“ to confirm the question “Create vehicle analysis log (VAL)?”.
Switch to the Maintenance/repairs menu.
5.1.2 Select Control unit replacement. Press •F12“ to continue.
5.1.3 Select Write data mode. Press •F12“ to continue.Press •F8“ to write basic information.Wait until the message Coding has been written successfully appears. Press •F12“ to continue.
5.1.4 Press •F11“ to go back. Switch to the Overview menu.
Check the chassis number in the steering wheel electronics control unit.
5.1.5 Select Steering wheel electronics control unit.
Switch to the Extended identification menu. Check the chassis number and change it if necessary.
6 Maintenance of vehicle data and coding the vehicle following this guide: https://gpsadapter.us/blogs/installation-guide/upgrade-sport-style-steering-wheel-to-multifunction-coding-guide
7 Enable functions.
7.1 Switch to the Maintenance/repairs menu. Select the Function enable function.
7.2 Enable the Heated steering wheel and multi-function steering wheel function. Enter the activation codes and confirm by touching the Status cell.
7.3 Enable the Cruise control function if necessary.Enter the activation code and confirm by touching the Status cell.
7.4 Press •F8“ to execute. Wait until the message Enable was successful appears. Press •F12“ to continue.
8 Calibrate steering-angle sensor.
The steering angle sensor is integrated into the steering electronic controller(Clock Spring) and is responsible for recording the movement of the steering wheel (steering wheel angle). Data is transferred to the PSM control unit via the CAN bus.
8.1 Select from the control unit overview in PIWIS: Steering wheel electronics-->Maintenance/repairs-->Steering-angle sensor calibration
8.2 Follow the PIWIS system prompts,calibration successful PSM indicator in instrument is off.
9 Read out the fault memories of all systems, work through any existing faults and erase the fault memories.
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