Another update on my run on issue. It again happened last Friday so I brought it back to the dealer of course it did not do it when I first got there. But, I kept turning on and shutting off the car and it did it !!! Then they tried and it kept doing it. They checked it out and called to say they think they found the problem. They said it was the SDM Module - this is an $800.00 fix. This module is for the air bag system (they claim the voltage from this module was backfeeding the computer) at this point I have no choice but to replace it because otherwise the dealership doesn't find any other problem. Will let you know what happens, won't be ready til after Tuesday.
Well, hopefully the new
SDM Module won't also backfeed the 5985 circuit, or you'll still have the same issue.
If the SDM Module was faulty, it should have thrown a code.
As you can see, I don't trust most service departments with unknown issues they have to troubleshoot on their own. I'd be getting involved first, and taking readings and measurements in the shop right along side the techs in a supervisory role. I trust me
, and if the old SDM Module could have had a diode soldered in between it and circuit 5985 to prevent a measly 5V from hitting it, that's what I would have done; and saved myself $798.50 in the process.
However, with that said, hopefully the repair will work out for you.
. . Falcon