BMW F20 F21 LCI 118i B38 136HP Engine Control Unit ECU DME 9424338 Manual

BMW F20 F21 LCI 118i B38 136HP Engine Control Unit ECU DME is an original electronic engine control module designed for the 136 HP B38 unit in facelifted 1 Series models. This DME controller is optimized for use with a manual transmission, ensuring precise management of engine parameters and stable powertrain operation. It is the ideal solution for users who expect factory compatibility and consistency with BMW's electrical architecture.

Specifications and technical data

• SKU: 9424338
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9424338
• Substitutable numbers: 12148486839, 8486839, 12148674265, 8674265, 12148648362, 8648362, 12148654454, 8654454, 9424338, 0261S20781, 0 261 S20 781
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The presented engine controller is designed to support the three-cylinder B38 petrol unit in the 118i version, with a factory output of 136 HP. As a component from the Electronic control modules and controllers category, it is responsible for coordinating the fuel injection system, ignition, engine accessory control, and monitoring key operational parameters. Integration with a manual transmission allows for proper management of torque, throttle response, and interaction with the vehicle's onboard systems.

Powertrain compatibility

The controller is intended for an engine powered by petrol, which guarantees compatibility with the characteristics of the B38 unit. The module's software and configuration are adapted to work with a manual gearbox, ensuring that the control logic accounts for the specifics of gear shifting, engine load, and interaction with safety and comfort systems. This alignment helps maintain the typical BMW powertrain refinement and predictable responses to driver inputs.

Product characteristics and advantages

As a BMW brand component, the DME module ensures a factory fit for the vehicle's electrical installation and communication buses. This used controller is a solution that allows for cost-effective repair of the engine control system while maintaining the vehicle's original architecture. A properly selected module:

• enables the restoration of correct engine operation following the failure of a previous controller,
• ensures compatibility with sensors and actuators factory-fitted in the specific model,
• facilitates diagnostics using standard BMW service tools,
• allows for maintaining the consistency of the vehicle configuration with service documentation.

For workshops and users, this means a predictable installation process and the ability to perform further maintenance according to manufacturer procedures.

Condition, origin, and practical application

The module comes from dismantling and is offered as a used BMW engine controller. Such components are a preferred choice for repairs where preserving the vehicle's original electronics is crucial while optimizing costs. Replacing a damaged controller with an original module from the secondary market allows for restoring proper engine function, reducing the risk of vehicle network communication issues, and avoiding compromises associated with aftermarket parts of uncertain specifications.

Expanding the control system in BMW

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 additional controllers, engine management modules, or accessory control units, check out the available parts in the BMW electronic control modules and controllers category.

More about the role of original modules in modern cars

Modern cars rely heavily on advanced electronics, and the quality of control modules has a direct impact on the driving characteristics and behavior of the vehicle. If you are interested in how original controllers and multimedia modules help maintain the factory properties of premium brands, it is worth reading the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which highlights the importance of properly selected electronic components in modern designs.