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PSM Failure, Spoiler Failure, Check Engine Light

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You have checked the grounds on the car?
I would try re-programming the PSM module - clear the codes - then see what comes back.

Thanks for the quick reply, Loren. Two questions:

1) Can I re-program the PSM module with the Durametirc tool (my guess is no)?

2) How do I check the grounds?

When this originally happened I asked the tech to try reprogramming the front and rear control modules and he said that they were already up-to-date.


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1. Sorry, no. You need a PIWIS or PIWIS 2.

2. Start with the troublesome battery to starter cable and the chassis ground.

1 - The dealer told me the software was up-to-date in the front and rear control modules

2 - The dealer checked this at my request the last time my car was in and they told me it was fine. My starter was also replaced recently but these problems far pre-date this issue.

They still say the issue is the ABS Hydraulic Unit Pump (997-355-955-06). However, I'm having a difficult time getting the warranty company to agree.

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It is not not a case of "checking" - it is a case of "re-programming".

That is the problem - checking does not correct the errors or necessarily report all errors.

If that dealer will not do a re-program then I would find another dealer - seems like they just want you to buy parts without doing all the possible (easy) fixes.

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