sorry, I didn't answer the gentleman.
I haven't cleaned it 'cos I'm not great in the mechanics dept. I can only spend money on things that are vital!
Dave
I see so you just leaving it ?
im sure it does more damage if you leave it !
im replacing mine with a new unit its so annoying !!!
I will change for a new unit im not taking it out to keep cleaning it . Audi said this needs to be replaced !
how can you put up with that loud noise for 4 years as for damage to your car it sounds awfal every time i start the engine !!
]jimbobaroo, nice one! thanks for the update, I'll do mine before it gets cold (which was when it made the noise).
You're not alone finding out the emergency door opening routine haha.
P.S. Good luck with the leak hope it is easy fix.