My gearbox is in LHM, symptoms are as follows, locked to 3rd, selecting 1 2 and 3 seem to do nothing. When trying to start the car in park it does nothing and the "brake fail" light on dash illuminates when you turn key to start it. Only starts in neutral. My guess is the computer and gearbox are not communicating as they should? I'm stuck I can't find anything similar to my issue really please help