On my 2000 x5 4.4, SRS light was on due to following codes.

1. Seat belt buckle, front passenger
2. Internal control unit fault

After replacing seat belt buckle/tensioner, tried to clear SRS light by BMW Scanner 1.4 but it wouldn't clear.
I guess I need to replace control unit, and re-code VIN to match my car.

While I was searching for used SRS module, found matching part# but with different version.
I believe the Part# must be matched, but how crucial is to match Version#?

Thanks.