BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU Kit DME CAS 2 Key 7545046

The BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU Kit DME CAS 2 Key is a complete petrol engine control kit for selected BMW 1 and 3 Series models with the N45 unit. It includes the DME engine control unit, the CAS 2 module, and a matched key, ensuring seamless electronic system operation and convenient adaptation in the vehicle. This solution is designed for users and workshops requiring a technically matched kit from the Electronic Control Units and Controllers group.

Specifications and technical data

• SKU: 7545046
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7545046
• Substitutable numbers: 12147568427, 7568427, 12147545046, 7545046, 0261209016, 61356943759, 6943759
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Application and Function of the ECU DME + CAS 2 + Key Kit

The presented kit is intended for BMW 1 Series E87 and 3 Series E90 vehicles equipped with the N45 petrol engine in the 116i and 316i versions. The combination of the DME engine control unit with the CAS 2 module and paired key ensures consistency of the immobiliser, starting system, and engine management. This makes the kit a practical basis for replacing a damaged control system, reducing the need for time-consuming programming from scratch.

The system is optimized for petrol engines, allowing for precise control of fuel injection, ignition, and interaction with other onboard modules. For workshops specializing in BMW, this provides a convenient starting point for further vehicle configuration.

Benefits of Using an Original Engine Control Unit Kit

The ECU kit with the CAS 2 module and key offers several significant technical benefits:

• consistency of components responsible for start authorization and vehicle network communication,
• reduced risk of conflicts between the engine control unit and the immobiliser,
• easier adaptation of a used control unit compared to a single module without the complete set,
• the possibility of using existing replacement part numbers for VIN-based compatibility verification.

For the end-user, this translates to greater predictability of the powertrain's operation after repair and stable interaction with the vehicle's other electronic systems. Electronic Control Units and Controllers in a complete kit minimize variables during diagnostics and installation.

Technical Characteristics and Compatibility

The offered kit is from the BMW range and is designed for petrol-powered vehicles. The DME control unit's design is adapted to the specifics of the N45 unit, including ignition characteristics, operation under various loads, and interaction with factory sensors. The CAS 2 module is responsible for key authorization, immobiliser management, and communication with other control units in the vehicle.

Before purchasing, it is recommended to verify compatibility using the VIN and compare the designations of the control unit and CAS module with the parts installed in the vehicle. For professional workshops, additional coding or adaptation may be performed to match the configuration to the specific vehicle specifications.

Condition, Origin, and Workshop Purpose

The product is a used part, sourced from dismantling, making it an attractive cost-effective solution while maintaining original BMW construction. Such kits are frequently used by independent service centers and specialized automotive electronics workshops for repairs following engine control unit failures, immobiliser issues, or lack of communication with the CAS module.

Due to the nature of electronic parts, installation by a workshop experienced with BMW systems, equipped with appropriate diagnostic tools, and capable of post-installation testing is recommended. This allows for the full utilization of the kit's potential and ensures stable powertrain operation.

Expanding Knowledge and Selecting Other BMW Modules

If you want to better understand how control systems in BMW 3 and 5 Series work, including FRM modules, engine control units, and the iDrive system, it is worth referring to the practical discussion in the article Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Used Parts?. This is a good way to supplement your knowledge when planning repairs using used electronic modules.

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, comfort modules, or CAS systems, check the available parts in the BMW Electronic Control Units and Controllers category.