BMW Bosch ME5.2.1 ECM – Plug & Play Remanufactured

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

• OEM Bosch ME5.2.1 ECM

• Professionally remanufactured using high-quality components

• Fully bench tested for proper communication and operation

• EWS immobilizer disabled for plug-and-play installation

• Ready to install – install and drive immediately

• VIN programming available upon request

Vehicle Compatibility

BMW models equipped with Bosch ME5.2.1 DME, including but not limited to:

• BMW 540i – M62

• BMW 740i – M62

• 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

1. Place your order

2. (Optional) Provide your VIN upon request to be written to the ECM

3. We remanufacture, configure, and test the unit

4. 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:

• Dealer programming

• Key alignment

• EWS synchronization

Simply install the ECM and start the vehicle without additional setup.

Common Symptoms of a Failed ME5.2.1

• Crank but no start

• Intermittent stalling

• Throttle or pedal faults

• No communication with scan tools

• Injector or ignition faults

• Internal ECM failure or corrosion

Why Choose LaCorte Automotive

• BMW-focused electronics specialists

• Bench-level diagnostics and validation

• No dealer visit required

• Fast turnaround and expert technical support

Important Notes

• This is a remanufactured OEM Bosch ECM

• Not compatible with ME7.x, ME9.x, MSV70, MSV80, or MSD80/81

• Installation recommended with a fully charged battery

• Emissions readiness and inspection requirements may vary by location

• Core return may be required (if applicable)