BMW 1 Series E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE CAS 3 Key 7810002 Manual

BMW E81 E82 E87 LCI E88 N47S 123d Engine Control Unit is a factory electronic control unit designed for 1 Series models with the N47S 123d engine. This item from the Electronic Control Modules and Units category is responsible for precise management of the powertrain's operation, ensuring stable engine characteristics and predictable throttle response. A used module is a sensible choice for drivers seeking an original solution while maintaining cost-effective repairs.

Specifications and technical data

• SKU: 7810002-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7810002
• Substitutable numbers: 13617811702, 7811702, 13618512589, 8512589, 13617812002 13617810002 13617808402 13618506325, 7812002 7810002 7808402 8506325, 13617809002 13617812502 13618508713, 7809002 7812502 8508713, 123d, N47S, 0281013776, 0 281 013 776, 61359147196, 9147196
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application and Compatibility with N47S 123d Engine

The presented engine control unit is intended for BMW 1 Series E81, E82, E87 LCI, and E88 vehicles equipped with the N47S engine in the 123d version. The controller works with the factory electrical system of these models, allowing for the preservation of original engine operating characteristics, injection maps, and ancillary control strategies.

By maintaining the OEM architecture, the module enables the restoration of correct powertrain operation after the failure of the previous controller, without the need for universal solutions or those adapted from other designs.

BMW Electronic Control Modules and Units – Advantages of Original ECUs

An original BMW engine control unit ensures:

• consistency with the factory control logic for the N47S engine,
• proper cooperation with other modules in the vehicle (including safety and comfort systems),
• stable engine operating parameters across the full load range,
• diagnostics using standard BMW service tools.

For workshops and users, this means easier configuration, predictable vehicle behavior, and reduced risk of communication problems within the vehicle network.

Compatibility with Manual Transmission

The controller is configured to work with a manual transmission, which is important for the logic of torque control, throttle response, and cooperation with driver assistance systems. Using a module designed for the appropriate gearbox type helps avoid communication errors between controllers and incorrect powertrain responses.

In practice, this translates to predictable car behavior when starting off, shifting gears, and accelerating, as well as the correct functioning of traction and stability control systems.

Characteristics of a Used Controller

The offered engine control unit is a used part, which significantly reduces repair costs compared to purchasing a new module. At the same time, it retains the original BMW construction, which is particularly important for owners who value technical consistency in their vehicles.

Before installation, it is recommended to perform standard servicing procedures, such as matching the controller to the specific vehicle (coding, potential programming) according to the manufacturer's procedures. A properly prepared module allows for the restoration of full engine control system functionality after the previous ECU failure.

Technical Support and Further Information

If you are looking for other BMW Electronic Control Modules and Units for your car, check out our dedicated offer: BMW Electronic Control Modules and Units. You will find a wide selection of controllers tailored to different models and engine versions.

To better understand how original modules influence a car's character and on-road behavior, it is worth reading material describing the importance of factory components in preserving a brand's DNA – we recommend the article: Audi and Pure Emotion – How Used Parts Help Maintain Brand DNA. Although it concerns a different manufacturer, it effectively illustrates the role of original controllers in modern cars.