OP, see if you can get the car scanned by INPA. Need to see what the stored fault codes actually are by module. I'd say don't part her out unless you know that the issue(s) is/are too many to reasonably overcome. I'd put neither dime nor hour more in it until it's scanned.

__________________
______________________________
2002 X5 4.6 IS (Imola on black)
2001 740i M-sport (Alpine on black)
2000 540it M-sport (Titanium on grey)
1995 540i/6 (Hellrotted like a MMM)