Audi dead. pointing to control module

[crazydiamond70]

Hi all, wondering if anyone can answer a few questions. Audi is dead. 

What led to this, car been off road for a few months, fan belt snapped on motorway, fixed, was then having lots of fault codes, that pointed to a fuse in the engine bay, replaced the fuse, the throttle body connector caught fire.Had a water pipe burst that i fixed, so unsure throttle body got wet. replaced throttle body, Dpf blocked at same time, went into limp mode. So off road for 2/3 months.Managed to clear out DPF, car back on the road, yippee.

Then handbrake faults, cleared codes with OBD11. codes returned , good old google and other forums etc, suggested changing handbrake module, For battery issues , going flat , not providing module with the power needed. Handbrake module is plug and play ??  swapped handbrake module, ok for a day , same faults but when handbrake used ,stalled engine . clear faults , then noticed smoke from area where module is located.Put original module back on , then got a hell of a lot of issues , component protection activated U fault codes, no dash lights , no start, would take car ages to wake up, to start, then would not turn off when key pushed in. lots of clicking sounds in the rear, that i think were coming from the comfort control module. 

Now the car is dead, had battery on charge , thinking battery related, nothing works, apart from windows , hazards, seat motors. 

So questions , seems to be the comfort control module is dead, is there another module that controls the comfort one, Obd11 faults before car died, mentioned control module A or is module A the one in the rear? How did i get all these faults, by swapping handbrake module, same part number , but different letter at the end.( Firmware upgrade )

Would cloning or have the comfort module repaired fix this car ??  or is there another module, that needs repairing alongside??  

[cliffcoggin]

How old is the battery? How many times has it gone flat?

[crazydiamond70]

Hi , its slightly smaller than it should be, about a year old, never had any issues with the battery , until it got taken off the road, with the cold weather and it not being used, this is the fifth time its been charged.