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Derek Lane wrote:
>
> Did the newer GTIs not come with auto up and down on the windows? It was standard
> on the '95s.
No A3 came with one-touch UP until 1998. If you've got it, there's
about 10,000 other people waiting to find out how.
Let me give a brief status update. On Sunday, I drilled the old
pulley's pin out on the drill press. Actually, it was more like
pushed it out. The pin was just a big rivet, which started to
spin as I was drilling. I just pulled on the drill press lever
harder, and the rivet head folded upwards and it fell through
the hole. The steel pulley's stove bolt fit snugly in the resulting
hole, and the pulley fit like a glove. The big problem (that I
still haven't overcome) is getting the cable back onto the pulley.
There isn't enough slack in the cable, even after compressing
both cable jacket springs. I suspect that maybe the cable is
slack or knotted up in the motor housing, and [unfortunately]
saw signs of fraying near the motor outlet when I pulled the jacket
back. I'll have to open up the motor mechanism and take a look.
I'm *not* going to buy a new mechanism. Repeat three times. :-)
On to the electronics aspect. The regulator is made in Germany
by Brose (not to be confused with stereo maker Bose). It has
integral electronics of some type. If you take a look at
the Bentley schematics for the Jetta rear doors, you can pin out
several functions like child safety window locks. The electronics
in the regulator apparently handle such fine "Detroit" logic errors,
and prevent power window fights shorting out the circuit. (Think
about it. If the switches just reversed the motor current, the
driver could push up while the passenger pushes down, and the
result is a dead short.) From what I see, there's 5 pins with no
wires running to them on the schematics. My speculation is that
one of them is the key to one-touch up. Hopefully, I won't be
buying a new regulator to find out which one it is..... :-)
-Arthur
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Tue Oct 20 22:48 CDT 1998
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