Hi
I have a 1.9 tdi diesel 2001 Audi a4
I had a problem where the alarm was going off and after a quick drive it would somehow reset itself I presumed it to be the battery in the siren and just removed the siren Then after about 2 months I have lost the electric windows interior lights and the central locking

I can open the car with the Drivers lock but can not open the rear doors.

I removed the passengers carpet and had a look for water but it's dry as a bone
I have put a vag com test freeware on the car but it dosent go as far with fault code testing as I want and kicks out saying I need a registered version.
Anybody got any ideas and is it worth registering the vag software from ross tech in order to delve further into the problem It looks like a central fault to all 3 and I need to know where control comes from

Hell will freeze over before I take it to an Audi dealer as Sunderland Audin are a bunch of cowboys


The part number I presume to be the correct ecu is 8E0 959 433 AC

Cheers