Okay, so curing my c/locking problem wasn't as easy as I'd thought. Whenever I lock the doors, they lock & then unlock. Lock them again & they stay locked. Same happens when unlocking, it takes two attempts! I've tried swapping the Relay Module & the General Module (ZKE), with known good units, but to no effect. This is assuming that either one of these modules handles the c/locking? Any help here would be much appreciated. Paul '88 735i SE