The Ediabas suite needs to know exactly which COM port to look at. Navigate to C:\EDIABAS\BIN\ and look for obd.ini . Open it with Notepad. The very first line should say .

BMW diagnostic software is incredibly powerful, but it is also notoriously finicky to set up. If you are working on an E-series BMW using INPA and suddenly hit , your diagnostic session comes to a grinding halt.

: INPA typically requires the cable to be assigned to COM1 in the Windows Device Manager.

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