BMW E81 E87 LCI 116i 1.6 N45N 115HP Control Unit ECU Kit DME 7567321 CAS3 Keys

BMW E81 E87 LCI 116i 1.6 N45N Control Unit ECU Kit DME CAS3 Keys is a complete set from the Electronic control modules and ECUs category, designed for the engine management system in facelifted 1 Series models. It includes the DME engine control unit, the CAS3 module, and matched keys, which facilitates restoring the performance of the powertrain electronics after a failure or when replacing the control unit.

Specifications and technical data

• SKU: 7567321-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7567321
• Substitutable numbers: 12147567321, 7567321, 61356943834, 6943834, 12147591162, 7591162, 12147591163 12147585435 12147585249, 12147581848, 12147582242 12147581610 12147557951, 12147581609, 7591163 7585435 7585249 7581848, 7582242, 0261201553, 0 261 201 553
• Category: ECUs & Computer Modules

Purpose of the ECU DME CAS3 kit with keys

The set is dedicated to facelifted BMW 1 Series E81/E87 vehicles with the 115 HP N45N petrol engine in the 116i version. Integrating the DME controller with the CAS3 module and keys allows for maintaining the consistency of the immobilizer system and engine electronics, which is crucial when replacing a damaged controller or swapping components.

A set configured in this way minimizes the risk of issues with start authorization, bus communication, and component synchronization in the vehicle. This solution is particularly useful for workshops specializing in BMW electronics and for users who want to reduce vehicle downtime.

Benefits of using a complete control kit

Choosing a complete ECU kit with the CAS3 module and keys provides several significant assembly and service advantages:

• consistency of components responsible for start authorization and engine communication,
• reduced need for programming the entire security system from scratch,
• easier diagnostics in case of previous vehicle starting issues,
• faster replacement of a damaged controller in workshop conditions.

For vehicles with the N45N engine, the correct cooperation of the controller with engine peripherals and the electrical installation is particularly important, which is why using a matched set helps limit the number of potential failure points. A used set with preserved communication structure can be an effective alternative to new, expensive components.

Characteristics and condition of electronic components

The offered set comes from dismantling and is sold as a used set of control electronics. This means that the individual modules previously operated in a vehicle but retain the functionality required for further use after proper installation and configuration. This type of solution is often chosen by services specializing in the BMW brand that are looking for a reasonable compromise between cost and functionality.

Before installation, a standard diagnostic procedure and verification of software compatibility with the specific car's configuration are recommended. In many cases, it will be necessary to match parameters to the vehicle's VIN, which is performed using appropriate service software.

Selection by numbers and compatibility within BMW

The elements included in the set have an assigned OEM part number and associated interchangeable numbers, which facilitates precise matching to a specific vehicle configuration. Thanks to this, a workshop or user can verify compatibility with their BMW 1 Series using parts catalogs or dedicated tools for selection by numbers.

When working with control electronics, it is crucial to check hardware and software compatibility, so before purchasing, it is worth comparing the markings with the previously installed controller and CAS module. A correctly selected set allows for limiting the scope of adaptation and speeds up the process of starting the vehicle after repair.

Technical support and additional information

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 engine controllers, comfort modules, or security systems, check the available parts in the BMW electronic control modules and ECUs category.

For users who want to better understand how to safely select and install used controllers and sensors, the Global Parts guide will be useful: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. You will find practical tips there regarding selection by numbers, compatibility, and installation procedures, which will facilitate the informed use of the offered set in your BMW.