BMW i3 I01 Rex 60Ah Hybrid ECU Engine Control Unit Kit RDME eDME 8645316 BDC Key

The BMW i3 I01 Rex 60Ah Hybrid ECU Engine Control Unit Kit RDME eDME 8645316 BDC Key is a complete engine control kit from the Electronic Control Modules and Controllers category, designed for the hybrid powertrain of the BMW i3 with a Rex generator. The kit includes key ECU modules responsible for precise management of the combustion engine's operation, integration with the vehicle body, and access authorization, ensuring consistent and stable performance of the entire powertrain system.

Specifications and technical data

• SKU: 8645316-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8645316
• Substitutable numbers: 12148645316, 8645316, 12148630128, 8630128, 12148636390, 8636390, 12148626627, 8626627, 5WD00011, 12388661706, 8661706, 12387504988, 7504988, 12388642338, 8642338, 12388642242, 8642242, 12388635447, 8635447, 12388631718, 8631718, 61359383712, 9383712
• Fuel type: Diesel
• Gearbox type: Manual
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and Function of the ECU Kit

The presented engine control unit kit has been developed for BMW vehicles with a Rex-type hybrid drive, where the combustion engine acts as an energy generator. The Engine Control Unit is responsible for controlling the operating parameters of the diesel engine, cooperating with the fuel system, and communicating with other vehicle modules. The integrated RDME and eDME modules work with the BDC body control unit and the key, forming a cohesive, factory-tuned set.

This solution enables the maintenance of correct startup logic, safety, and communication within the vehicle network, which is particularly important in advanced BMW hybrid designs.

Compatibility and Selection by Numbers

The ECU kit is an original BMW component, which facilitates matching it to a specific vehicle configuration based on the OEM number and interchangeable part numbers. The presence of multiple reference numbers allows for precise selection based on equipment version, engine type, and transmission used. Selection by part numbers minimizes the risk of software or hardware incompatibility and speeds up the service process.

In case of doubts regarding compatibility with a specific BMW i3 model, it is advisable to consult the VIN and service documentation to confirm full hardware and software compatibility of the kit.

Technical Characteristics of the Control System

The presented ECU kit is designed to work with a diesel-powered engine and a manual transmission within a hybrid system. This configuration requires precise management of torque, fuel delivery, and synchronization with the drivetrain. The Engine Control Unit monitors the combustion engine's operation during startup, load, and shutdown modes, and also communicates with modules responsible for safety and driving comfort.

The inclusion of the BDC module and key in the kit promotes consistency of the immobilizer system and comfort functions, which is important when replacing the control unit set in modern BMW vehicles.

Benefits of Using a Used ECU Kit

Choosing a used engine control unit kit for the BMW i3 can significantly reduce repair costs compared to purchasing new components, while maintaining the vehicle's original electronic architecture. Original BMW modules ensure proper fit with the vehicle's electrical system, wiring harnesses, and software, which reduces the need for modifications and shortens installation time.

An additional advantage is the possibility of using a complete kit (ECU, BDC, key), which in many cases simplifies adaptation and coding procedures in the vehicle, especially where security systems are highly integrated with the powertrain electronics.

Technical Support and Guide Materials

If you want to better understand how to safely select and install used engine control units and other electronic modules in your BMW, consult the Global Parts guide: Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?. The article discusses, among other things, selection by OEM numbers, HW/SW compatibility issues, and practical installation tips.

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 engine control units, body modules, or powertrain management systems, check the available parts in the BMW Electronic Control Modules and Controllers category.