Sorry for being in the wrong forum but this one gets tons more traffic than the Cayenne board:

Here's the story - '05 Cayenne S involved in front end collision that was not that bad as only the bumper needed to be replaced along with some hoses that were immediately behind the bumper. Fenders and hood were untouched but unfortunately the airbags went off so that created prolonged period at the body shop/dealer. It's now been 11 weeks and still no car - don't get me started!

Anyway, while at the dealer to reset the airbag lights/activation switch, the tech noticed that he could not communicate with the PSM. He tried to reset it but could not even communicate with it at all. The bodyshop did not receive authorization from the insurance company for this workup so the dealer sent it back to the bodyshop and suggested correcting the toe angle and then maybe the PSM would be able to communicate with the DME. However, insurance company is balking at the allignment costs so I just told the dealer that I would go ahead and pay for this as it needs it anyway.

So - anybody have any ideas of why the PSM is not communicating at all with the DME. THE DSM here in Atlanta said that, even with a bad toe angle, the PSM should still be able to communicate but just not be able to calibrate. And yes, the yellow inertia switch has been pushed.

If anybody has any suggestions either with shops, specific techs anything - please help. I'm quite desparate at this point!

 

Just had my 02 Turbo in the shop for a PSM issue. The problem turned out to be a vac leak in the duckwork. Took dealer three days to find.