- Or remove the seat sensor for now and plug the factory seat sensor back. If the battery drain issue is resolved, then the bypass emulator is at fault, which is rare.

- I have had the seat emulator in my E39 1998 528i now for 8 years, zero issues.
Forgot where I bought it from but somewhere in Europe (? Hungary, maybe?).

__________________
1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT