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70 plus on the motorway and i have a little wheel shake - clearly i need to have the wheels rebalanced - however after about 10 minutes i had a "PSM Failure and ABS failure" on the dash.

At home later i put the Durametric on the car and it read "Fault 4440 Steering angle sensor" - I put two and two together and gathered the wheel shake would have been picked up by the steering angle sensor as a fluctuating output and after 10 minutes it poped the fault warning up.

Will get the wheels balanced Saturday, however - just had another play with the Durametric and i notice under the "Diagnostics" menu the last entry is "Recalibrate steering angle sensor" - well gave it a go, only instruction before confirming i wanted to do the recalibrations was that the wheels are in the straight ahead position.

The indicator light on the durametric plug in simply appeared to flash between green and orange - seemed to sit like that for ages - There are no instructions for this option, so does anyone know how anything about this - do i need to turn the wheel from lock to lock? or leave for a period of time whilst it does its magic?

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Here's what the manual says to do:

Calibrate the steering angle sensor with the wheels in straight-ahead position!


Check the steering angle sensor actual value with wheels in straight-ahead position before calibrating the steering angle sensor! Only recalibrate the steering angle sensor on the measuring platform if the steering angle actual value lies outside the tolerance or is doubtful!

1. Drive vehicle onto measuring platform. Affix measured-value pickups to all wheels.

2. Check wheel alignment values and adjust if necessary.? If the wheel alignment values on the front and rear axles are correct, calibrate the steering angle sensor with the front wheels in straight-ahead position. Calibration description in following text.

3. Connect the Porsche System Tester 2 to the diagnostic socket.

4. Select the "Calibrate steering angle sensor" menu with the Porsche System Tester 2 in the PSM system. Entry to the PSM system takes place through the ABS system (automatic status change after PSM).

5. Confirm calibration start. The procedure can also be interrupted.

6. The PST 2 now requests the 4-digit safety code shown in the display.


This safety code must be extracted in the Actual Values menu, Safety Code sub-menu! The safety code changes automatically each time provided that PSM is called up again!

The calibration procedure will be interrupted if an incorrect safety code is entered! This time-consuming procedure ensures that the steering angle sensor is not calibrated unintentionally!

The steering angle sensor can be calibrated several times! The value (the zero position) is stored in the steering angle sensor itself!

7. Input the 4-digit safety code with the cursor keys (4 centre keys on right). Then continue with the (>>) key.


The final possibility to interrupt the calibration is not to confirm the safety code input! To do this, press the appropriate function key for no!

Important for calibration: The wheels of the vehicle must be in straight-ahead position


8. Confirm safety code input with wheels in straight-ahead position. Display in the Tester display after the safety code input has been confirmed: Steering-angle sensor being calibrated.

For safety reasons, read out the current steering angle sensor actual value after calibration. To do this:

9. Leave the PSM system. Then call up PSM again and select the steering angle sensor in the Actual values menu. Required display in the Tester display: 0° ± 3° when the wheels are in straight-ahead position.

10. Repeat the calibration if the value is not correct.

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Richard, thanks, very detailed reply but i dont have the piwis or ps2 - just the Durametric software.

I think the wheel balance will sort the problem of the failure warning but was curious about the recalibration function on the Durametric

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