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OscarAH1W

PSM Intervention on Tiptronic vs Manual 996TT

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Odd one for the group here:

 

I have a 2004 Turbo Cab (manual) with X50 that I have owned since early 2010 and put around 30K miles on in that time (Bought with ~20k miles).  I recently found a 2004 Turbo Cab ( Tiptronic) with ~29,000 miles that was such a good deal that my parents purchased it.  I drove the thing recently while visiting and a couple times in constant-radius turns on back roads, the PSM intervened out of nowhere (The first time it happened I actually thought I hit a shift button with my thumb and downshifted mid corner).  Anyway, I got it to intervene once more in a pretty benign turn.  There certainly wasn't 7 degrees of slip angle and I have to push my own car much harder (read: screw up the corner entry) to get PSM to intervene.  I guess my question(s) is/are this:  Is there a difference in the PSM software between the Tiptronic cars and Manual?,  a malfunction in the Tip?

 

Very interested to hear the responses.  Thanks

 

 

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:welcomeani:

 

It is best to run the Porsche diagnostics on the PSM using Durametric or Porsche PIWIS tester. Any number of faults could cause the issue you saw (i.e. dirt or faulty wheel speed sensor(s), steering angle sensor, booster pump, and yes even ab ad brake light switch).

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