BMW 1 3 Series E81 E87 LCI 116i 1.6 N43 (122HP) ECU Kit DME CAS3 Key 7583225

BMW 1 3 Series E81 E87 LCI 116i 1.6 N43 (122HP) ECU Kit DME CAS3 Key is a complete set from the Electronic control modules and controllers category, designed for professional engine management system maintenance in selected BMW 1 and 3 Series models. The kit includes the DME controller, CAS3 module, and a matched key, allowing for seamless management of the immobilizer and engine electronics without the need for time-consuming adaptation of individual components.

Specifications and technical data

• SKU: 7583225-17
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7583225
• Substitutable numbers: 12147583225, 7583225, 61359226238, 9226238, 12147640015, 7640015, 12147621178, 7621178, 12147579142, 7579142, 12147585303, 7585303, 12147580279, 7580279, 12147575665, 7575665
• Category: ECUs & Computer Modules

Purpose and function of the ECU DME CAS3 Key kit

The presented kit is dedicated to the 1.6 N43 petrol engine with 122 HP in LCI versions of the 1 and 3 Series, where the DME engine controller works in conjunction with the CAS3 module responsible for ignition authorization. Combining these elements into one set facilitates the restoration of proper ignition and injection system operation following an electronics failure or when replacing a damaged controller.

In practice, this means the ability to:

• restore full communication between the engine controller and the vehicle's security system,
• maintain the integrity of immobilizer data,
• reduce the risk of coding errors during installation.

Benefits of using an original BMW control module

Using an original set from the Electronic control modules and controllers category allows for maintaining the factory operating logic of the N43 engine, including injection and ignition strategies, as well as cooperation with other vehicle systems. A properly matched DME + CAS3 + key set minimizes the need for extensive software modifications and speeds up the service process.

Key advantages of this solution include:

• drivetrain electronics consistency – the controller and comfort module come from a single system,
• easier diagnostics for future service work,
• preservation of the driving characteristics typical for a BMW with an N43 engine.

Application in BMW service and diagnostics

The ECU DME CAS3 Key kit is suitable for both specialized BMW workshops and independent service centers dealing with automotive electronics. The set can be used for:

• replacing a damaged engine controller after an electrical or mechanical failure,
• resolving starting issues resulting from inconsistent immobilizer data,
• advanced diagnostics of the engine management system in E81/E87 LCI 116i models.

Thanks to the completeness of the kit, it is possible to reduce the number of variables in the repair process – the technician works with a factory-synchronized package, which makes it easier to identify potential faults in the vehicle's wiring.

Product characteristics and condition

The offered set comes from the original BMW line and is an aftermarket component, allowing for an economical restoration of vehicle performance while maintaining proper build quality. The kit includes key components responsible for starting and engine management, making it a practical base for further vehicle configuration.

Before installation, a standard service procedure is recommended, including verification of the vehicle's electrical system, checking grounds and power supply, and testing communication via the diagnostic bus to fully utilize the potential of the offered kit.

If you are planning a comprehensive repair or upgrade of your BMW's engine electronics and need other elements from the same group, such as controllers, comfort modules, or engine management systems, check out the available parts in the BMW electronic control modules and controllers category.

More about working with original modules and retrofitting

For projects involving retrofitting or changing electronics configurations, it is worth learning best practices for working with used modules. An extended discussion on the topic of retrofits and using elements from higher equipment versions can be found in the article Retrofitting in VAG and BMW group cars: How to affordably upgrade your car using used parts from higher versions?.

If you are also interested in the broader context of maintaining the character of premium brands using original components, it is worth reading the material on our blog: Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.