BMW E87 E90 E91 118i 318i N46 ECU Kit DME 7565300 CAS3 + Key Manual

BMW E87 E90 E91 118i 318i N46 ECU Kit DME CAS3 + Key Manual is a specialized electronic control unit designed for the N46 engine in the 3 Series E90 with a manual transmission. This DME controller is responsible for precise engine management, ensuring stable operation, correct fuel delivery, and proper communication with other vehicle systems. By maintaining the factory electronics architecture, it provides a solid foundation for professional engine control system repairs.

Specifications and technical data

• SKU: 7565300-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7565300
• Substitutable numbers: 12147565301, 7565301, 12147565300, 7565300, 0261201160, 61356943830, 6943830
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The engine computer in this BMW model acts as the central management unit for the N46 engine in a manual transmission configuration. It is responsible for coordinating signals from sensors, controlling ignition, fuel delivery, and interacting with other vehicle modules. Using the correct controller allows for the restoration of proper engine performance parameters after an electronics failure or damage to the original ECU.

As an element from the Electronic control modules and controllers group, this DME is crucial for proper starting, throttle response, and idle stability. Correct matching to the engine version and transmission type minimizes the risk of communication errors in the vehicle network and facilitates adaptation during programming.

Benefits of using an original BMW controller

Using an original DME module in a BMW E90 318i with an N46 engine ensures:

• preservation of factory engine control logic,
• consistency with other onboard modules,
• proper cooperation with the manual transmission,
• the possibility of professional diagnostics using dedicated service tools.

For workshops and users, this means easier coding, predictable engine behavior, and reduced software compatibility issues. A properly selected engine computer allows for effectively resolving common faults related to control errors, power loss, or starting problems.

Application in the repair and diagnostic process

This DME controller is suitable both for standard replacement of a faulty ECU and for more complex engine control system repairs. It can be used in:

• restoring full functionality of the N46 unit after an electronics failure,
• professional engine wiring repairs in the BMW 3 Series E90,
• diagnostic procedures requiring a controller swap to verify a fault.

Due to its fitment for a specific drivetrain configuration, the ECU DME module is a practical solution for service centers specializing in the BMW brand and for users looking for parts consistent with factory specifications.

BMW electronic control modules and controllers – expansion and selection

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 comfort controllers, body modules, or additional ECU units, check out the available parts in the BMW electronic control modules and controllers category.

More about engine controller operation and tuning

When selecting an engine computer for a BMW, it is worth understanding how changes in electronics affect engine characteristics, throttle response, and the potential for any modifications. If you are interested in how properly selected components can influence car performance and how to safely approach drivetrain modifications, check out the guide How to increase engine power: a practical guide to engine tuning with used parts.

Additionally, to better understand the importance of original electronic modules in maintaining the character of a premium brand, you can read the article Audi and pure emotion. How do used parts help maintain the brand's DNA?, which shows how essential the consistency of electronics and equipment is in modern cars.