DME · 14. November 2025

This page provides technical reference information for the diagnosis and repair of the Siemens MS42.1 engine control unit (DME), which was installed in BMW vehicles with the M52TU (Double-VANOS) engine.

DME · 10. November 2025

BMW M52TU (MS42) – Pinout and Service Manual. Comprehensive documentation on the pinout of the MS42 ECU, which was installed in BMW E46, E39, and Z3 models. Includes: A complete pinout diagram of all three ECU connectors.