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

BMW 1 Series E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE CAS 3 Key is a factory electronic engine control unit designed for BMW 1 Series models with the N47S 123d engine. As a component of the Electronic control modules and ECUs group, it is responsible for precise engine management, including fuel injection, ignition, and communication with other vehicle systems. This is a solution for users who want to restore full powertrain performance while maintaining the original BMW electronic architecture.

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

The presented engine control unit is intended for BMW 1 Series cars of the E81, E82, E87 LCI, and E88 generations equipped with the N47S 123d engine. The ECU is compatible with a manual transmission, which is crucial when selecting the appropriate module for a specific vehicle configuration. By maintaining the original control logic, it ensures operational consistency with the factory electrical installation and other modules in the vehicle.

Function in the powertrain

The engine control unit in this BMW model is responsible for:

• managing the operation of the N47S engine under various load conditions,
• coordinating combustion parameters to maintain stable power and torque,
• communicating with sensors and actuators within the engine,
• communicating with other modules from the Electronic control modules and ECUs group within the vehicle network. A properly selected ECU allows for maintaining the performance characteristics typical of the N47S 123d unit, which translates into predictable throttle response, correct operation of assistance systems, and stability in daily use.

Benefits of using an original ECU

Using an original engine control unit dedicated to a specific BMW 1 Series variant offers a number of practical benefits:

• Full integration with the vehicle's electrical system – maintaining factory operating parameters and communication with other modules.
• The ability to utilize the existing vehicle configuration after proper ECU matching (coding, adaptation at a specialized workshop).
• Consistency with the manual transmission, which reduces the risk of errors associated with incorrect ECU version selection. This solution is particularly beneficial for repairs following engine electronics failure, when the priority is to restore factory performance parameters without interfering with the mechanical design of the engine.

Product characteristics and condition

The offered BMW engine control unit comes from dismantling and is a used part, which allows for economical repair while maintaining the manufacturer's original specifications. Such modules are frequently chosen by workshops specializing in the BMW brand because they allow for the restoration of the factory vehicle configuration without the need to use replacements with uncertain parameters. Due to its classification in the Electronic control modules and ECUs group, the ECU can be integrated with other electronic modules in the vehicle if necessary, which facilitates diagnostics and subsequent servicing. Before installation, it is recommended to perform full vehicle diagnostics and plan programming procedures at a specialized service center.

Technical support and knowledge about BMW modules

If you want to better understand how to properly approach the repair of a BMW engine ECU and other electronic modules, such as the iDrive system or body modules, it is worth using expert materials. Practical tips on using dismantled parts in BMW 3 and 5 Series models can be found in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models using dismantled parts?, which helps to understand the specifics of BMW electronics and good service practices. 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 ECUs, body modules, or comfort controllers, check out the available parts in the BMW electronic control modules and ECUs category.