Electrical Gremlin

[Steve B]

... factory horn works, aftermarket doesn't, no fingers to point at Audi here!

You repaired the broken wires and found it didn't fix the problem, must be somewhere else.  Troubleshooting this sort of thing requires following tracks on the wiring loom.  It may be a switch or a bad connection ... or a broken wire you didn't happen to find.  Start with a wiring diagram.

Climate control diagnostics were a good place to start, and probably could provide more info.  Here again, service documentation is the best place to start IMO.  Could be a problem in the head or a connection problem.

If there ours any common thread, I'd go with ground, but I doubt there's much to be gained by trying to associate the three.

Steve Buchholz

Mark Rosenkrantz <speedracer.mark at gmail.com> wrote:

>All at once?  Load reduction relay?  Ignition switch?  Corroded main battery wiring or fusible link?  I'm going for ignition switch.... It's an Audi.  ;-)
>
>Mark Rosenkrantz
>Typos sent from my iPad
>
>On Mar 4, 2013, at 1:04 AM, Brian Pleet <subscriptions at strategico.ca> wrote:
>
>> My 95.5 S6 has been a model of reliability with accessories for the last 17
>> years, until...
>> 
>> Three, seemingly unrelated issues at once;
>> 
>> 1) Horn quit working - could hear the relay working so I checked the fuse
>> and it was blown. 8 years ago I replaced one of the two standard horns with
>> an aftermarket air horn, now only the original single horn is working
>> 
>> 2) Windows - upon starting the car no window will operate, then after  a 5
>> to 15 minute drive they start working again. Thought wiring was the likely
>> cause so last week I pulled the accordion rubber between the frame and the
>> driver's door and found 2 broken wires. Several more are showing wear from
>> the constant bending. Even with the 2 broken wires, the windows would not
>> work, then work again. Today I repaired the two broken wires and the
>> windows are still working intermittently.
>> 
>> 3) A/C- control panel will often not allow a temperature change, or a fan
>> speed change as if the panel is frozen. Compressor will often not respond
>> on or off so when needing defrost I turn the whole system off with the fan
>> button, then restart with Auto and the compressor and A/C works fine.
>> Sometime the control panel works perfectly. I pulled a code using Ross-Tech
>> of:
>> 01271 - Positioning Motor for Positioning Flap (V68)
>>   41-10  -  Blocked or No Voltage - Intermittent
>> 
>> I'm too old to start believing in Gremlins, so please tell me where the
>> logic link may be or how to diagnose the unrelated root cause(s).
>> 
>> 
>> Thanks,
>> 
>> 
>> Brian
>> 95.5 S6
>> 02 TT Roadster
>> 90 90Q
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