'91 CQ Power Window Relay USA to EU Swap

[Huw Powell]

OK, first, you changed a "little black box" from the original part to a 
different one without making sure they were interchangeable. That's a 
bit scary.

But let's see if I can answer some questions.

The stock window control relay has ten pins:

http://audi.humanspeakers.com/power-windows-onetouch.htm

(Middle or so of the file)

The European equivalent of the day provided express both ways.  I have 
never had my hands on one to check the pin outs.

There is one module per window.

I have tinkered with these a bit, for instance changing the express down 
to express up on both my 90s, and installing a pair set to express up in 
my Coupe (of the 1982 variety).

I would recommend trying the *correct* part to see if it solves your 
problem.

Then if you want to try the express up and down module, assuming it 
still works, you'll need to compare schematics to make sure it is 
connected correctly.  There is a chance it is actually interchangeable - 
that would mean your problem lies elsewhere.

"The door switches do not have any effect." - what does this mean?

- Huw



On 12/17/2016 3:10 PM, Christopher Gharibo wrote:
> As you may recall, I had posted about my '91 CQ relay giving out 9V to power window switch light when the car was off. I swapped stock power window relay 286 to European relay 347 that is a 13 pin Siemens Part No. 79FA400 / 441959257. eBay has pictures of what this looks like.
>
> The window switch light now goes to zero volts after timer runs out. The door switches do not have any effect. The window switches power back on when the button is pressed even when the key is out and door is open. Driver express down works. But there is no express up for driver side and no express up/down for passenger side.
>
> Has anyone done this swap and what was the express feature outcome? Are there other relay part #s that enable this feature?
>
>
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