1995 A6 Questions from Cat

Huw Powell audi at humanspeakers.com
Fri Feb 16 14:21:47 EST 2007

> we replaced the ignition switch twice and I finally took it to the
> dealership and had the housing and ignition switch replaced.
> What lead me to do that was that the car doesn't shift to a higher 
> gear sometimes.   It seemed to coincide with stopping the car, 
> turning it off and restarted it ...

Not knowing anything about the car in question... when I first read the 
post, I too thought of the ignition switch interlock.

But that is simply a way to prevent you from starting the engine unless 
you are in P or N.  There are usually brake pedal interlocks, too, so 
you also have to have your foot on the brake.  And they are usually 
electronically operated these days.

But as I think about it, I can't for the life of me see how something 
like that would affect an upshift.  An automatic transmission can take 
many things into account to determine shift points, but I don't think 
the position of the ignition switch would ever be one of them.

I would recommend transmission service (Drain and fill at least, with 
filter if possible, a full flush would be better) at a minimum, and hope 
that's enough.

Although the "stop car and restart" trick is sometimes working to get 
the tranny shifting again, the ignition switch is not the only variable 
involved in that process - you are, at the very least, putting the 
tranny into neutral or park and putting it back in drive again.

Huw Powell



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