Restore reliable performance and drivability to your BMW with our remanufactured Bosch ME5.2.1 ECM. Each unit is professionally rebuilt, fully tested, and configured as a true plug-and-play solution by disabling EWS immobilizer functions, eliminating the need for dealer programming or key synchronization.
This ECM is ideal for vehicles experiencing no-start issues, stalling, misfires, throttle faults, or communication errors caused by a failing ME5.2.1 DME.
What’s Included
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OEM Bosch ME5.2.1 ECM
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Professionally remanufactured using high-quality components
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Fully bench tested for proper communication and operation
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EWS immobilizer disabled for plug-and-play installation
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Ready to install – install and drive immediately
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VIN programming available upon request
Vehicle Compatibility
BMW models equipped with Bosch ME5.2.1 DME, including but not limited to:
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BMW 540i – M62
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BMW 740i – M62
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BMW X5 4.4i – M62
📌 Compatibility is based on the exact DME part number.
Please confirm your ME5.2.1 part number prior to ordering.
How It Works
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Place your order
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(Optional) Provide your VIN upon request to be written to the ECM
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We remanufacture, configure, and test the unit
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Receive a ready-to-install plug-and-play ECM
Why This ECM Is Plug & Play
This ME5.2.1 ECM is configured with EWS immobilizer functions disabled, removing the need for:
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Dealer programming
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Key alignment
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EWS synchronization
Simply install the ECM and start the vehicle without additional setup.
Common Symptoms of a Failed ME5.2.1
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Crank but no start
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Intermittent stalling
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Throttle or pedal faults
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No communication with scan tools
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Injector or ignition faults
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Internal ECM failure or corrosion
Why Choose LaCorte Automotive
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BMW-focused electronics specialists
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Bench-level diagnostics and validation
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No dealer visit required
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Fast turnaround and expert technical support
Important Notes
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This is a remanufactured OEM Bosch ECM
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Not compatible with ME7.x, ME9.x, MSV70, MSV80, or MSD80/81
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Installation recommended with a fully charged battery
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Emissions readiness and inspection requirements may vary by location
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Core return may be required (if applicable)
