[s-cars] '95 S6 Electrical Problems Compounding

[Bill de Alva]

Hi All,
 
I have a growing list of electrical problems.  First, my ignition switch went bad.  The spring broke so the switch did not return from the start position.  I lived with this for a couple of months, remembering to manually turn the switch back each time the car was started.  There is a service bulletin on this problem that convinced me that I did not want to tackle replacement of the switch (involves removing the steering wheel and dash).
 
So... I had my local mechanic replace the switch.  Just before delivering the car to my mechanic, the autocheck display died.  My mechanic checked the bulbs that back light the autocheck display and replaced the display with a used one from a wrecked car.  The display is still dead.
 
I drove the car for a couple hundred miles with the new ignition switch.  Yesterday, when I turned the car off, the fresh air blower stayed on.  The back light to the emergency flasher switch also stayed on.  I had to pull the fuse for the blower to keep the battery from going dead.
 
I somehow suspect all these problems are related.  Obviously, the most pressing problem is the fresh air blower staying on.  I suspect the blower problem is related to the ignition switch replacement.  I know the heater control module has a self diagnostic function but I doubt that will help as the blower still runs when the heater control is off.
 
My instinct is that electrical problems of this magnitude would best be dealt with by a mechanic equipped and trained for all the diagnostic procedures described in the manual.  Unfortunately, the service manager at the nearest Audi dealer told me he no longer has any mechanics trained to service the '95 S6 and recommended several independent mechanics instead.  I've used several of the recommended mechanics, most of whom seem to be very good at dealing with mechanical issues but somewhat lost when it comes to tracing electrical problems.
 
Any suggestions regarding the source of the problem with the fresh air blower or the name of a mechanic expert in electrical problems would be greatly appreciated.
 
Thanks again for any help,
Bill de Alva
 


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