My local independent does not have the expensive OBDII scanner that the dealer does, and after having attempted to track down some running problems I'm having with my car, told me I should go to the dealer for a diagnostic test to find out what is really wrong. At the dealership, they charge me $60 to tell me that their scanner won't interface with my car. They said that either my car has been chipped, or that my DME computer has failed. They offered to get a loaner DME from Porsche and install to see if that is my problem for $500, only to remove it. To have them put in a new DME for keeps would be closer to $2000 labor included.
My independent mechanic is trying to find a DME to swap in for less than the dealer. He's also looking for a used DME. I'm getting ready to smog the car and he says that on his equipment it appears that all of the readiness codes are set. Would a failed DME computer show readiness codes as set? The scanner at my independent and autozone both showed no signs of having a problem interfacing with my car, why does'nt the dealer scanner interface properly? Does this sound like a chipping problem, or a failed DME computer.
My car is new to me 2 months ago so I don't know the history here. It has thrown a CEL (P0117) Coolant Temperature Circuit Low, I had the temperature sensor probe replaced. No other CEL or codes are present in the system.
Anybody have any experience with similar? Is there a way to simply fix my DME computer? How much is a used/rebuilt DME? If the DME must be replaced, is there some way I can turn this into an upgrade, using a different year DME that is more easily chipped? Will I have to go back to the dealer to have a new/used DME programmed?
Thanks for your insight,
Mark

 

Svaha.

Sending you a PM.

Clive.

 

Svaha,
I just read your DME post from 4 years ago, I have the same issues, what did you ever do?