2016-2019 BMW 7 Series 4.4 Engine Control Module 8678187

Also known as

DME

Digital Motor Electronics

ECU

Engine Control Unit

Engine Computer

Powertrain Control Module

What this part does

The Engine Control Module, internally referred to by BMW as the DME, is the primary computer responsible for managing all engine operations. It continuously processes real-time data from oxygen sensors, camshaft position sensors, and mass air flow sensors to precisely control fuel injection, ignition timing, and turbocharger boost pressure. The unit is typically located within a sealed electronics box under the hood to shield it from extreme engine bay temperatures and moisture. When this module fails, the vehicle will often experience a crank-no-start condition, severe engine misfires, a lack of communication with OBD2 diagnostic scanners, or sudden stalling while driving.

Fits these vehicles

OEM and interchange numbers

8678187

12148678187

Before you order

This Engine Control Module is electronically locked to the vehicle it came from and cannot be simply plugged into a new car. It requires professional programming, coding, and an alignment process with your vehicle's immobilizer (CAS/BDC) system before the engine will crank or start. Always verify that your original unit displays the number 8678187, as BMW uses different hardware versions for the same model depending on the specific production month and local emissions requirements. Check the wiring harness connectors for any signs of oil intrusion or corrosion before installing the replacement, as a compromised harness can immediately damage the new computer.