Siemens MS

MS family index

This branch sits within Siemens / Continental. Keep common methods here and hardware, memory layouts, software coverage and variant differences with their ECU pages.

ECU familyStarting pointMS41M52 / M52 OBDII / US S52 subvariant references.MS42M52TU; family memory layout and configuration.MS43M54; driver demand, hardware changes and software packages.MS45MS45.0 and MS45.1; fuel-mass strategy and separate sensor contexts.

Shared guides

Calibration files and programming — identification, definitions, read formats and a reproducible write record.Injector data and fueling checks — flow, latency, units and worked arithmetic.MS41, MS42 and MS43 data logging — matching packet definitions and useful baseline logs.MS42 and MS43 load reference — distinct signals for injection, ignition and VANOS.MS42 and MS43 fuel and camshaft control — shared map relationships and validation.

The shared guides state their covered families. Placement under MS does not imply applicability to every Siemens / Continental controller. MSS and Simos retain their own branches.

Reference vocabulary

Siemens terminology remains a generic reference. Choosing ECU definition files provides the cross-family provenance checklist. The words in a parameter name help locate a function; its software-specific definition establishes the meaning and units.

Sources and scope

Original reference notes by Tuning Wiki, informed by the linked MS4X Wiki pages. MS4X Wiki contributors and the authors credited by each linked project remain the source authors. Sources checked 10 November 2026. Suggested validation steps and worked arithmetic are editorial guidance; they are not a tested calibration or a claim of hardware verification.

Siemens MS41 (revision 23746).Siemens MS42 (revision 23721).Siemens MS43 (revision 23749).Siemens MS45 (revision 23142).