New up date messed about with Delphi cars soft wear and it drove fine changing gear etc and trans fail safe prof poped up on the dash and stuck in 4th gear pulled over and waited a few seconds started the car drove fine for a 10 mins and then came back

Hi new to posting help would be great full I have a x5 e53 2002 3.0d was getting trans fail safe message Fault that came up was steering angle so got a new 1 and I stead of putting that in and coding it I took it apart and replaced the broken part and put the original 1 back on problem fixed then ...