Siemens MS41 — supported tools

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Siemens MS41 engine ECU supported by DFOX via OBD. Reading and writing for listed applications from: BMW. Variant, memory and operation details are specified in the support records.

Last changed: 2026-10-31 · Card revision 2

Compatibility depends on ECU HW/SW, protocol and active licence. A tool missing from this list does not imply lack of support.

Tool

Connection

Operations

Scope and notes

CMDFlash

OBD

Operations unspecified

MS41; BMW SERIE 3; 320I SIEMENS MS41 KLINE; BMW SERIE 3; 323IS SIEMENS MS41 KLINE; BMW SERIE 3; 328I SIEMENS MS41 KLINE; BMW SERIE 5; 520I SIEMENS MS41 KLINE; BMW SERIE 5; 523IS SIEMENS MS41 KLINE; BMW SERIE 5; 528I SIEMENS MS41 KLINE; BMW SERIE Z3; 2.0I SIEMENS MS41 KLINE; BMW SERIE Z3; 2.8I SIEMENS MS41 KLINE

Mode compatibility confirmed by the official CMDFlash list. The corresponding protocol package is required; match functions and ECU variant in CMDFlash software.

DFOX

OBD

Read (type unspecified)
Write

BMW 3 Series (E36) 2.0/2.5/2.8l; BMW 5 Series (E39) 2.0/2.5l; BMW 7 Series (E38) 2.8l; BMW Z3 Roadster 2.0/2.8l; MS41

Operations confirmed in the DFOX list for the specified application and variant. Updates published since October 2025 require DFOX V2 software.

Pinout Bench

No Bench pinout has been added.

Pinout Boot

No Boot pinout has been added.

Update history

Revision 2 · 2026-10-31
Revision 1 · 2026-10-31