The original module (located under the front floor mat in front of the driver's seat) was submerged when I pressure washed the car and didn't realise that water had gotten into the vehicle. Locks, windows, sunroof and lights (all controlled via this module - J429 in the wiring diagrams) stopped working. I've since tried 2 other modules - one (used) supplied by my local Audi/VW specialist shop and one that I bought (used) on-line. Those two, and the original unit, will now operate the central locking but nothing else. Hard to believe that all 3 units are suffering from the same fault(s) so I'm wondering if there's anything else that I can look for.

There's power at the window regulator motors so the breakers are OK. I have all the wiring diagrams but they're a bit hard to follow in places. I think I can mickey mouse the window drives except that I'm not sure whether the up/down inputs are dry contact or powered. Similarly I can probably get the interior lights working by bypassing the control module.

Any thoughts or suggestions would be much appreciated. (Not sure that I want to spend more than $500 at this point on a new control module in case there is another problem somewhere that's affected the 3 that I've already tried.)