Description
Need help finding your ECU or reading its label? Use our BMW ECU location guide.
Check the ECU before choosing a service
Send us the complete ECU-label photo, engine and chassis details, gearbox type and the fault or work required. Engine / system reference: M50; some versions are already non-EWS.
This is a compatibility enquiry, not a paid EWS delete service. We will confirm whether immobiliser removal is applicable, whether we support your exact hardware and what the work will cost before you order or send anything. No EWS-delete availability is promised for an unverified ECU variant.
Existing catalogue ECU references: 0261200402, 0261200403, 0261200413.
Identify the exact hardware and VANOS / non-VANOS engine configuration first. Some units do not require an EWS delete.
Send your ECU details or call 01244 710374.
Original engine and chassis applications
Search ECU services by part number, engine and chassis.
Use this as an identification guide for the applications below. Market, build date, gearbox and ECU version still need to match; engine conversions must be checked against the installed hardware.
- M50B20: E34, E36. Non-TU engine; confirm Bosch versus Siemens and installed hardware.
- M50B25: E34, E36. Non-VANOS 2.5-litre.
- M50B25TU: E34, E36. VANOS 2.5-litre; includes Bosch 0261200413 hardware.
Identification and EWS advice, not a promise every M50 ECU needs an EWS delete. For M50B20TU Siemens MS40.1, choose the separate Siemens listing.
Find the ECU and read its label before ordering.
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