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955_turbo
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PSM Issues
955_turbo replied to 955_turbo's topic in 9PA, 9PA1 (Cayenne, Cayenne S, Cayenne Turbo, Cayenne Turbo S)
Thanks Loren. -
Hi all, While I've been lurking here for a while I thought it time to post something and see if anyone here has a solution to my PSM issue I've been having. The problem is that after about 30-40 minutes of highway speed (100-110km/h) on cruise control all of a sudden cruise control turns off, I loose all throttle and the dash beeps and displays PSM Shutdown Consult Dealer immediately (or similar words). At this point you must pull over as there is no throttle, stop and the engine is running rough and full throttle gives you a 200 rpm increase and that's it. Ok, turn it off, restart the car and all is well again with the CEL on. Once the issue starts it's a continuous problem in that I've had it re occur 1km up the road or it doesn't happen again for 30 minutes or an hour. The problem is that after the 4th start the CEL goes off and the error is cleared so the dealer sees nothing when I get it back to him and of course says that there is no problem and tries to charge me a diagnostic fee. Ok, Durametric to the rescue as I purchased it to keep and eye on things. Here's what I retrieved. Motronic: P1508 and PSM: 1314. I called the dealer on Monday and they are still looking into but I thought someone here might be able to give me heads up on the problems or if anyone has had or heard of similar. Cheers, Simon.