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

BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU Kit DME CAS 2 2 Keys is a complete petrol engine control kit designed for selected BMW 1 and 3 Series models with the N45 unit. The set includes the DME module, CAS 2 module, and two keys, which facilitates a seamless replacement of the powertrain control electronics. This solution allows for a technically correct restoration of the original control configuration in the vehicle.

Specifications and technical data

• SKU: 7545046-3
• 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 kit

The presented ECU kit is intended for BMW 1 Series E87 and 3 Series E90 vehicles with an N45 petrol engine. Combining the DME controller with the CAS 2 module and paired keys ensures consistent operation of the starting system, immobilizer, and powertrain management. This makes it possible to replace the complete control package without the need for time-consuming matching of individual components.

Benefits of using a complete kit

The ECU DME kit with the CAS 2 module and two keys allows for:

• maintaining compatibility between the engine controller and the vehicle's security system,
• reducing the risk of starting issues resulting from electronic incompatibility,
• efficient replacement of control components within a single package,
• maintaining the factory operating logic of the powertrain in BMW cars with the N45 engine.

For workshops and users, this means a more predictable repair process and easier diagnostics after installation. Electronic control modules and controllers in the form of a complete kit are particularly useful for more serious engine electronics failures.

Technical specifications and compatibility

The kit has been designed to work with the N45 petrol engine in BMW 116i and 316i models, where correct matching of software and immobilizer configuration is crucial. Combining the DME with the CAS 2 and keys minimizes the need for additional programming, provided the kit is selected according to the vehicle's configuration. In practice, this translates into:

• stable communication between the engine controller and the comfort and security module,
• correct operation of starting functions and key authorization,
• maintaining engine operating parameters consistent with factory specifications.

As an item from the Electronic control modules and controllers category, the ECU kit requires professional installation and verification of compatibility with the specific vehicle equipment version.

Condition, origin, and practical installation tips

The product is used, which in the case of original BMW electronics often provides a cost-effective solution. The modules come from dismantling, thus retaining factory specifications and being adapted to real operating conditions. Before installation, it is recommended to:

• check the compatibility of the engine configuration and the vehicle's electrical system,
• perform diagnostics after installation to confirm proper communication of all modules,
• entrust the installation to a workshop with experience in BMW electronics.

To better understand how to safely select and install used controllers, it is worth checking the guide: Used automotive electronics – ECU modules and second-hand sensors in practice. The article discusses selection by OEM numbers, hardware and software compatibility issues, and common user questions.

Expanding the BMW control system

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 additional controllers, auxiliary modules, or powertrain management elements, check the available parts in the BMW electronic control modules and controllers category.

Using a complete ECU DME kit with CAS 2 and keys in BMW 1 and 3 Series with the N45 engine allows for a technically correct restoration of the control system, reduces the number of potential failure points, and facilitates further vehicle maintenance.