Bobby Fawcett

I have a 2005 Audi A8 Quattro was in a minor wreck on the front driver side. Some of the wires in the harness were sliced in half after going through and repairing the wiring the vehicle still has no lift. When I pull codes with my code reader I get no communication with ABS control module fault and I get a steering angle sensor fault. My question is will both of those faults prevent the suspension system from operating normally? Also how would I determine if the steering angle sensor needs to be replaced or reset. And is there a special computer or program that I need to be able to access all of these systems