Identification and evidence
ACTRONICS' ECU catalogue labels an ECU group Bosch/Siemens Digifant I and Motronic ML5.9. Treat this as a source-specific catalogue naming convention, not proof of equivalence to M5.9.
Identification and scope
Retain the complete ECU designation, Bosch and vehicle-manufacturer part numbers, engine, vehicle year and market, hardware and software identity. Similar names do not establish shared pin assignments, calibration files or programming procedures. Examples above are source-scoped and are not a complete fitment list.
Source accessed 10 November 2026.