jlgallag wrote:Also, I have been having a minor problem with the automatic tilt/telescope feature of the steering wheel in my '91 Q45.
I had problems with the wheel not retracting all the way up when I'd turn the car off. I could sometimes put the key back in and out and it would correct itself. Looking through the service records, I could see it had been a problem in the past, but no one ever diagnosed correctly. They even tried replacing the ADPC controller - said it was an updated design.
The dirty little secret with this system than the dealer techs. didn't seem to know is that the control unit monitors the position of the wheel with slide potentiometers. These are the same type of part you used to see for slide volume controls, etc. These commonly get dirty and then the system shuts down when it doesn't "see where the wheels is. If you can take the cover off of the steering column and find these they're inexpensive to replace. In my case I just took a lot of paper towels and newspaper in the car and sprayed about half a can of electrical contact cleaner in the switches - cleared it up for the last couple of years!
You might also try moving the wheel up and down several times to try to clean the switch... much like you can do with a dirty volume control on a radio to eliminate the crackle for a while.
Heath