BMW E87 LCI E90 116i 316i 1.6 N45N ECU Kit DME 7585249 + CAS3 + Key Automatic

BMW E87 LCI E90 116i 316i 1.6 N45N ECU Kit DME + CAS3 + Key Automatic is a complete engine control and immobilizer kit designed for selected BMW 1 Series and 3 Series models with the 1.6 N45N engine and automatic transmission. The set includes the DME controller, CAS3 module, and a matched key, which significantly facilitates restoring the electronic system's functionality after a failure or engine replacement. This solution allows for a consistent match of powertrain electronics in one cohesive package.

Specifications and technical data

• SKU: 7585249-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7585249
• Substitutable numbers: 7585249, 12147585249, 7591162, 12147591162, 7591163, 12147591163, 7567321, 12147567321, 7585435, 12147585435, 7581848, 12147581848, 7582242, 12147582242, 7581610, 12147581610, 7557951, 12147557951, 7581609, 12147581609, 0261S04290, 0 261 S04 290, 61359147220, 9147220
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU DME + CAS3 + Key kit

The presented set belongs to the Electronic control modules and controllers group, responsible for managing the operation of the 1.6 N45N petrol engine and start authorization in BMW E87 LCI and E90 vehicles in 116i and 316i versions. Combining the DME controller with the CAS3 module and a matched key ensures the consistency of immobilizer data, which minimizes the risk of vehicle starting issues after installation.

The kit is particularly useful for tasks such as replacing a damaged controller, engine swapping within the same family of units, or repairing the system after a major electrical failure. Thanks to this ready-made package, the need for programming from scratch can be reduced, shortening vehicle downtime.

Benefits of using the complete DME + CAS3 + Key kit

Using a complete control kit offers a number of practical advantages:

• Powertrain electronics consistency – The DME, CAS3, and key come from a single system, which facilitates integration with the vehicle's wiring.
• Reduction of immobilizer issues – the matched CAS3 module and key reduce the risk of errors related to start authorization.
• Support for the 1.6 N45N engine – the kit is prepared to work with a specific engine unit, which promotes stable system operation.
• Automatic transmission adaptation – the electronics configuration is designed to work with an automatic gearbox, which is crucial for proper communication between controllers.

For workshops specializing in the BMW brand, such a kit provides a convenient, technically consistent solution that allows for optimizing the repair process and limiting the number of potential points of failure.

Vehicle integration and installation aspects

The ECU DME + CAS3 + Key kit is designed for integration with the factory electrical system of BMW E87 LCI and E90 in 116i and 316i versions. Thanks to the adaptation for automatic transmission, it is possible to maintain proper communication with other vehicle modules, such as the transmission controller or comfort systems.

During installation, it is recommended to:

• perform computer diagnostics after installation to verify communication between modules,
• check the compatibility of the vehicle's equipment configuration with the applied kit,
• exercise special caution when working with the electrical system and the immobilizer circuit.

Due to the nature of the component controlling engine operation and security systems, installation should be entrusted to a service center with experience in BMW electronics, which will allow for fully utilizing the kit's potential and avoiding unnecessary errors.

Product characteristics and condition

The offered kit comes from a BMW vehicle and is an original equipment component, which promotes proper fitment for E87 LCI and E90 models with the 1.6 N45N engine. The product is in used condition, which in the case of automotive electronics means that before installation, it is worth performing standard diagnostics and – if necessary – adaptation to a specific vehicle.

For users considering the installation of used control modules and sensors, a guide describing selection by OEM numbers, hardware and software compatibility issues, and practical installation aspects will be useful – this is discussed in detail in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Expanding the control system in BMW

If you are planning a comprehensive repair or upgrade of the engine electronics area in your BMW and need other elements from the same group, such as additional controllers, auxiliary modules, or powertrain management components, check the available parts in the BMW electronic control modules and controllers category.