Hi everyone,
After several low battery voltage / weak start issues, I’m now getting the following fault on my BMW with MSS50:
DTC 155 – MSS50 Control Module Fault Memory Master
The car still runs, but the fault keeps coming back.
I’m thinking about trying a WinKFP ECU update in case the software got corrupted because of the voltage drops.
Has anyone here already had this issue?
Did a software update fix it, or did it end up being a hardware/power supply/DME issue?
Thanks in advance for any feedback.
