BMW VEHICLES: PROGRAM CONTROL UNITS (HYBRID TRANSMISSION CONTROL). COMMUNICATION TO THE HYBRID TRANSMISSION CONTROL MAY FAIL AFTER THE VEHICLE WAKES UP OR WHEN TERMINAL 15 IS SWITCHED ON. COMMUNICATION BETWEEN THE HYBRID TRANSMISSION AND OTHER CONTROL MODULES IS REQUIRED FOR NORMAL OPERATION, THE VEHICLE CANNOT BE STARTED IF THIS SITUATION WERE TO OCCUR. MODEL E72, ACTIVEHYBRID X6. *PE