BMW E92 LCI Engine Control ECU 3.0 Diesel 335d M57N2 306D5 Automatic 8509036 Kit

BMW E92 LCI Engine Control ECU 3.0 Diesel 335d M57N2 306D5 Automatic is a factory module from the Electronic control modules and ECUs group, designed to work with a diesel engine and an automatic transmission. It offers precise management of the powertrain, ensuring stable parameters and consistency with the original BMW electrical architecture.

Specifications and technical data

• SKU: 8509036-9
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8509036
• Substitutable numbers: 13618509036 0281016640, 8509036, 0 281 016 640, 13617823800, 7823800, 13618509036
• Fuel type: Diesel
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The engine control unit in this BMW model is responsible for advanced control of fuel injection, turbocharging, fuel dosage, injection timing, and cooperation with the automatic transmission. Thanks to this, the powertrain maintains proper dynamics, smooth operation, and predictable throttle response under typical road conditions. The module is designed to work with a diesel unit, which means it features matched control maps, engine protection logic, and support for diesel-specific operating parameters. In combination with an automatic transmission, it allows for smooth gear shifting and consistent torque management.

Benefits of using an original BMW module

The original control unit from this series ensures:

• preservation of factory engine and transmission performance characteristics,
• consistency with the electrical installation and other vehicle systems,
• possibility of diagnostics and adaptation using standard BMW service tools,
• stable cooperation with safety and comfort systems. For the user, this means predictable vehicle behavior, no need for wiring modifications, and easier service maintenance. When replacing the control unit, it is essential to match it according to the fuel type and transmission type – this unit is prepared specifically for a configuration with a diesel engine and an automatic transmission.

Product characteristics and condition

The presented module belongs to the Electronic control modules and ECUs group and comes from a BMW vehicle. It is a used component, which in practice means an attractive cost-to-functionality ratio while maintaining the manufacturer's original specifications. This type of control unit is often chosen for repairs when the goal is to maintain the factory logic of the powertrain. Before installation, a standard service procedure is recommended, including diagnostics and potential programming or adaptation to a specific vehicle. A properly selected and configured control unit allows for the restoration of correct engine and automatic transmission operation after the failure of the previous module.

Selection by part numbers and technical support

This control unit has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise matching to a specific BMW 3 Series E92 LCI configuration. When selecting, it is worth using the manufacturer's numbering and vehicle data to ensure full hardware and software compatibility. If you want to better understand how to safely choose used control modules, what to look for regarding hardware and software compatibility, and what the installation and adaptation process looks like, check out our guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

Expansion of the control system in BMW

If you are planning a comprehensive repair or upgrade of the engine control area in your BMW and need other components from the same group, such as additional modules, auxiliary controllers, or related electronic units, check the available parts in the BMW electronic control modules and ECUs category. Choosing components from one functional group allows for maintaining the consistency of solutions, facilitates diagnostics, and reduces the risk of communication problems between modules in the vehicle network.