Calibrating steering-angle sensor
Note. The steering-angle sensor must be re-calibrated after replacing the airbag contact unit. To correctly calibrate the steering angle sensor, the vehicle must be on the measuring platform.
The steering angle sensor must be calibrated using the menu with Porsche System Tester under the specified test conditions
Running gear set according to Porsche specifications. --> 44 IN SUSPENSION ALIGNMENT, COMPLETE - AS OF MY 2003 (ALL MODELS) .
Wheels in straight-ahead position and steering wheel horizontal.
In the straight-ahead position, the steering wheel may be turned by max. ±2.0° from the horizontal position (steering center position).
1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition. Continue with >> key.
2. Select vehicle type. Continue with >> key.
3. Select the PSM control unit and activate using the >> key.
4. Select Actual values and activate with the >> key.
5. Select Security code and activate with the >> key.
6. Note the security code and use the << key to go back to the calibration.
7. Select Calibration and activate with the >> key.
8. Input Security code and activate with the >> key.
9. Activate security code using the F7 key.
10. Select Steering-angle sensor and activate with the >> key.
11. Read safety instructions and activate with the F7 key.
12. After successful calibration, the stored fault code is erased from the fault memory. The PSM indicator light in the instrument cluster goes out.
13. Read out the fault memory and, if necessary, erase it.
1. Assemble and install steering column switch. Refer to 94 50 19 Removing and installing steering-column switch - as of MY 2003 (All Models) .
2. Install steering column trim. Refer to 48 13 19 Removing and installing steering column trim - as of MY 2003 (All Models Except Cayenne S TIO Titan) .
3. Install steering wheel. Refer to 48 10 19 Removing and installing steering wheel - as of MY 2003 (All Models Except Cayenne S TIO Titan) .
4. Install driver's airbag unit. > 695819 Removing and installing driver's airbag unit - "Installing" section
5. Steering-angle sensor calibration
Remove trim under dashboard at passenger's side. Refer to 70 19 19 Removing and installing trim under dashboard - as of MY 2003 (All Models) .