Hi ekimj10
The job was quite easy as long as you go slowly and checking what is already installed in your car. My car needed new door modules as my existing ones didn't have the electrics. If you need to replace your door modules, you need to get used ones from a car that has these new modules. In my car they were 5Q4 959 393 F for drivers and 5Q4 959 392 F for passenger and I sourced some from a crashed Audi A1 Japanese model which is RHD like mine and they are 5Q4 959 593 K drivers and 5Q4 959 592 K and they were about £80 for both. If you buy new ones from a dealer they would need to be parameterised from dealer or specialist.You can either buy new folding mirrors from a dealer or look for used ones again from the same model. I bought used ones which included glass and covers for about £280 for both. I then bought a new switch which included folding from a Audi dealer for £40 which was £400 all in, I was quoted £1050 from a specialist and like you I said no way am I paying that much. It does mean taking off both door cards to do all the work but as long as you take your time it is relatively straightforward. Then once you have done all that it is just the coding to do.