Thanks for the tips. A bit of an update... I removed the two T30 screws holding the motor to the caliper, cleaned inside and outside with electrical cleaner and took inside the house and tested with a 12v power supply on the outer pins and the motor worked.
So I cleaned up the pins even more and bent the female ones in more to make them tighter. I took it back out and plugged it back in. The wires are not in great shape as 7years ago Audi London did a terrible repair.
I left the motor hanging loose and I removed Audi London's tape and connected a multimeter to the exposed wire so I could see it in the mirror and turned on ignition and VCDS and saw the voltage change from 0.000v
and went out and saw it was working. I cleared the code and it has gone and now have a new code: Pad not reaching disc or similar.
So the caliper is OK, but wiring isn't. I am now debating whether to cut out damaged 7-8mm and resolder all 4 with heat shrink or get a new connector and wiring kits, grommet inserts etc...
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