If you suspect moisture, some owners have had success drying the unit out with a hair dryer, though this is often only a temporary fix.
When a schematic is marked as "verified" for a BSM B3 turbine package, it includes the following key features: siemens bsm b3 schematic verified
Use a multimeter to verify signal continuity from the ECU to the BSM connector pins (e.g., Pin 13 is often a critical signal line). If you suspect moisture, some owners have had