Quote Originally Posted by Ali Morrison View Post
Hi, I appear to be having the usual problems related to faulty b c u. Can someone advise me where the control unit is located & also any advice as to repair/replacement would be gratefully received....... Many thanks , Ali. ('04 MG ZT saloon, pre facelift)
I don't know of any 'usual' problems with the V8 BCU, so you have an unusual one or something else all together.

Start with checking the battery as a failing one can lead to all sorts of strange behaviour.
Check connections at earth points and general wire check.

Might be of more help if you (or your friend) can describe the problems.