If you have a BMW which has a fault with central locking and / or a problem with the electric windows your may have a problem with your GM5 module (or GM3 or GM4).
Send your GM5 module to us for a same day repair – see www.bmwgm5repair.co.uk for full details or call 01932 800800 Cartronics have FULL BMW diagnostics and bench test rigs.
No guess work just a confirmed and correctly fixed unit everytime.