breaking 2001 a4 1.9tdi

hi my mam just got an audi a4 1.9tdi 2001 its failed the mot on airbag light staying on. tried the plug under seat fix did nothing erased codes and read again its saying the airbag ecu is at fault along with lots of other issue's so uneconomic to repair. just spent a lot of money on parts as well. 

i fitted a brand new clutch 2 weeks ago new rear discs a nearly new rear caliper and front upper suspension arm. and various other things. also had a new turbo.

so its looking like its going to be broke for bits to get some money back. ive no pics at the min as this has only been a last minute decision. i can list bits but i would rather say whats wrong then you should know what bits are available. i will update any parts sold or just ask.

parts damaged, 

1. instrument cluster tried and air bag light bypass to see it through mot however did not work lol. 

2. drivers door card bit past it. 

3. front discs are a bit scored.

4. drivers rear door dented previous owner must have had a knock its beyond repair.

cant thing of anything else it does have leather black seats however and audi alloy wheels. 

any questions please ask. might be easier to ring my mum herself ill pm her number to anyone interested.