BMW F40 F44 M135i M235i xDrive 306HP Engine Module ECU Kit DME 5B32771 BDC + Key

Complete Engine Control Unit Set for BMW F40/F44 M135i M235i xDrive 306 HP (ECU DME Module + BDC Module + Key) is a solution designed for discerning users who require a cohesive engine electronics package for BMW xDrive models. The set includes key components of the engine control system, facilitating professional repair or replacement in F-series vehicles with a 306 HP engine. By maintaining the completeness of the modules, it is possible to efficiently restore full powertrain functionality while ensuring high compatibility with the vehicle's factory architecture.

Specifications and technical data

• SKU: 5B32771-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5B32771
• Substitutable numbers: 5B32771, 0261S108CL, 0 261 S10 8CL, 5B31353, 61355B31353
• Category: ECUs & Computer Modules

Purpose and Function of the Engine Control Unit Set

The presented set belongs to the Electronic Control Modules and Controllers group and is dedicated to BMW F40 and F44 models in M135i and M235i xDrive versions with a 306 HP engine. The kit includes the engine control module (ECU/DME), the BDC body module, and a key, which allows for maintaining the consistency of the immobilizer system, drive management, and vehicle network communication.

A set configured in this way is particularly useful for:

• replacing a damaged engine control unit in vehicles after a collision or electronic failure,
• transferring a complete powertrain between bodies within the same vehicle type,
• advanced electrical system repairs where module matching in a single configuration is required.

Construction of the ECU DME + BDC + Key Set

The set includes interconnected modules responsible for engine control, body function management, and access authorization. Combining the engine control unit with the BDC module and key in one package reduces the risk of synchronization issues, which in practice shortens diagnostics and configuration time after installation.

The components of the set are original BMW factory parts, ensuring proper fit with the vehicle's electrical system, wiring harnesses, and network architecture. This allows for maintaining the original operating parameters of the powertrain and correct cooperation with other vehicle systems, such as the xDrive system or safety systems.

Benefits of Using an Original BMW Control Module Set

Choosing an original engine control unit set with a BDC module and key offers a range of practical benefits in service and operation:

• High Compatibility with Factory Configuration – modules come from the same vehicle platform, facilitating integration with the existing system.
• Security System Consistency – combining the ECU, BDC, and key in one set minimizes issues with the immobilizer and start authorization.
• Time Savings in Programming – reduced need for deep controller reconfiguration compared to randomly selected components.
• Professional Repair Capability – the set is suitable for workshops specializing in BMW electronics that expect predictable module behavior.

Condition, Verification, and Service Application

The product is sourced from disassembly and is offered as a used BMW engine electronics set. This type of solution is often chosen by workshops and informed users looking for original components at a more favorable price than new parts, while maintaining factory design and compatibility.

To fully utilize the set's potential, installation in a specialized service center with experience in working with BMW F-series electronics, appropriate diagnostic tools, and access to programming procedures is recommended. This allows for safe matching of the modules to a specific vehicle instance and avoids problems with vehicle network communication.

More Knowledge About BMW Electronic Modules

If you want to better understand how BMW engine control units, body modules, or the iDrive system work, and how to safely use parts from disassembly in the 3 and 5 series, it's worth reaching for practical technical materials. An extended discussion on the topic can be found in the article: Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as additional controllers, body modules, or related ECUs, check the available parts in the BMW Electronic Control Modules and Controllers category.