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PASM randomly turning itself off and on again?

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Leroy787 PCGB Member
2023/01/14 22:16:20 (permalink)

PASM randomly turning itself off and on again?


Hoping someone can help with an odd one. 
I have a 2007 997 Carrera S and yesterday it seems to have developed a strange issue where the PASM switches itself off and then after around 10 seconds turns itself back on again… it did it a couple of times on a drive yesterday and on a 30 min drive today it did it 3/4 times in the first 10 mins but then didn’t do it again for the final 20 mins. Very bizarre. 
Has anyone else experienced this? Any advice on what I need to do to sort? 

Thanks in advance. 

2 Replies

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Motorhead PCGB Member
Re: PASM randomly turning itself off and on again? 2023/01/15 09:13:58 (permalink)
Hi Lee,
Do you get an error message when this happens? Back in the day of my early 987 Cayman ownership my PASM failed completely and eventually it was traced to a pinched cable … it took the tech most of the day to find it after liaising with the factory!
Clearly yours is an intermittent fault, which is always difficult to trace, but I think the most efficient way forward is to run some Porsche-specific diagnostics (PIWIS or equivalent) to see if any error codes have been flagged-up, otherwise you’re into checking connections, swapping electronic modules, etc. You’ll need to solicit the help of your local Porsche dealer or a reputable Porsche Independent, the latter most likely being a much cheaper alternative.

987.2 Cayman S
North Beds (R10 & R24)
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stephenowen PCGB Member
Re: PASM randomly turning itself off and on again? 2023/01/25 22:02:24 (permalink)
Same here , damaged cable to one of the acceleration sensors. 

Best regards,
Stephen Owen
Colbolt Blue 2007 997.1 C2 Cabriolet
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