BMW F20 LCI 118i F30 LCI 318i B38 136HP Engine ECU Unit DME 8662411 Automatic

BMW F20 LCI 118i F30 LCI 318i B38 136HP Engine ECU Unit DME is a factory electronic engine control unit designed for the 136 HP B38 engine in BMW 1 Series F20 LCI and 3 Series F30 LCI models with an automatic transmission. This used module from the Electronic control modules and ECUs category allows for professional powertrain repair without the need for a costly engine replacement. It is a solution for users and workshops that require original DME architecture and predictable integration with the vehicle's other electronic systems.

Specifications and technical data

• SKU: 8662411
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8662411
• Substitutable numbers: 8486839, 12148486839, 8674265, 12148674265, 8648362, 12148648362, 8654454, 12148654454, 0261S15022, 0 261 S15 022, 8662411
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the DME unit

The presented DME unit is responsible for the comprehensive management of the 136 HP B38 petrol engine, including precise fuel injection, ignition control, and communication with safety and comfort systems. The module is configured for use with an automatic transmission, which is essential for proper communication with the transmission mechatronics and electronic stability control systems.

As an original BMW component, the unit maintains factory control logic, which facilitates diagnostics, adaptation, and subsequent software updates at authorized service centers and specialized independent workshops.

Benefits of using an original engine control unit

Using an original DME module in a B38 petrol engine provides a number of practical benefits in daily operation:

• maintaining consistent CAN bus communication between the engine, automatic transmission, and other control units,
• the ability to correctly code and match the unit to the specific vehicle equipment configuration,
• easier diagnostics using factory service tools,
• reduced risk of errors resulting from the use of unsuitable aftermarket replacements.

Additionally, thanks to support for dedicated maps for the B38 unit, the controller helps maintain stable engine performance and proper exhaust emission parameters, which is important for periodic technical inspections.

Selection, compatibility, and replacement numbers

This control unit belongs to a group of components where matching by OEM number and interchangeable numbers, as well as hardware and software version compatibility, is crucial. In practice, this means it is necessary to verify compatibility with a specific BMW F20 LCI 118i or F30 LCI 318i vehicle, preferably based on the VIN and service documentation.

To safely select a used DME module, it is worth paying attention to:

• engine type compatibility (B38, 136 HP),
• fuel type – in this case, petrol,
• intended use for vehicles with an automatic transmission,
• belonging to the same family of controllers within the BMW brand.

Reasonable selection based on reference numbers and vehicle configuration minimizes the risk of startup issues, network communication errors, and the need for time-consuming installation modifications.

Professional installation and service aspects

Due to the importance of the DME unit for the safety and reliability of the powertrain, installation in a specialized workshop equipped with appropriate diagnostic software is recommended. In most cases, it is necessary to perform procedures such as immobilizer matching, coding to the specific vehicle configuration, and potential software updates.

A correctly selected and coded module allows for restoring proper engine operating parameters, eliminating errors related to a faulty controller, and ensuring predictable vehicle behavior in various road conditions. For workshops, this also means easier after-sales support and fewer warranty claims.

More about used electronics and related products

If you want to better understand how to safely choose used engine controllers, ECU modules, and sensors, how to check compatibility, and what to look for during installation, check out our guide: Used automotive electronics – second-hand ECU modules and sensors. It is a practical source of knowledge for mechanics and informed users.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as engine controllers, powertrain management modules, or other ECU units, check out the available parts in the BMW electronic control modules and ECUs category.