This is exactly the same problem I had - the problem was the cable that connects the outside door handle to the actuator. Mine had stopped moving freely causing the actuator lever for the outside handle to get stuck in an open position (and thus the door would fly open randomly when driving).More crap!
Bought an 8pin part thinking that the OEM one from Audi was dodgy, installed it today, didn't work either.
The really scary part: went for a drive around mid day, at 20 something mph, the door swung open (on it's own) without warning and nearly gave me a heart attack!!!
Luckily there was no one else on the road at the time...
Went back home and immediatly swapped back the original (old) part.
I've also posted this issue on 2 other forums,not a single response so far.
Apologies for: resurrecting a very old thread, and for not responding sooner.I bought a 2.0 TDi 2009 from auction. V5 previous owner name is suspiciously similar to Raigmoul with a private plate to match it.
Wondering if I bought his car or if this Is a massive coincidence.
Either way, i have my trim removal tools at the ready this weekend if the rain stops to diagnose this exact same issue.
Although, if you open any door and look at the base about 6" across from the front, there is a hole cut out. I have a loose nut visible inside that hole, too big to fall out. So my fault may differ but the symptom remain the same.
I'll update here regardless.