BMW E82 E90 E91 E92 135i 335i N54 306HP ECU Kit DME CAS3 + Key 7583332 Manual

BMW E82 E90 E91 E92 135i 335i N54 306HP ECU Kit DME CAS3 + Key Manual is a complete engine control and immobilizer kit designed for selected BMW models with the N54 306HP engine and manual transmission. The set includes the DME engine control unit, the CAS3 module, and a matched key, which significantly facilitates restoring the electronic system's functionality after a failure or during an engine replacement. This solution is particularly beneficial for advanced powertrain electronics repairs, where component consistency and trouble-free vehicle starting are essential.

Specifications and technical data

• SKU: 7583332-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7583332
• Substitutable numbers: 12147616431 5WK93642 61359147196, 7616431 5WK93642 9147196, 12147583332, 7583332
• Gearbox type: Manual
• Category: Control Modules

Application and compatibility with the N54 306HP engine

The presented ECU kit has been developed for BMW 1 and 3 series E8x/E9x generation vehicles equipped with the N54 306HP engine and manual transmission. Combining the DME controller with the CAS3 module and key ensures software consistency and compatibility with the vehicle's factory security system. This makes the kit particularly useful for:

• replacing a damaged engine control unit in vehicles with the N54 engine,
• engine swaps within the same engine family,
• resolving communication issues between the DME and CAS3.

Construction of the ECU DME CAS3 + Key kit

The engine control unit and CAS3 module kit consists of an electronic DME controller responsible for managing the N54 unit's operation, a CAS3 module acting as an advanced immobilizer, and a matched key. This configuration minimizes the risk of software conflicts and eliminates the need for time-consuming key programming for the vehicle. The kit is an original BMW product, which translates into a perfect fit for the electrical system and correct cooperation with other modules in the car.

Benefits of using a complete control unit kit

Choosing a complete ECU DME CAS3 + Key kit instead of a single engine controller helps reduce the number of potential problems when starting the vehicle after a repair. Powertrain electronics consistency facilitates diagnostics, shortens installation time, and reduces the risk of errors related to software incompatibility. The kit is particularly valuable for workshops specializing in BMW that perform:

• comprehensive powertrain repairs in 135i and 335i models,
• modernization and modification projects for vehicles based on the N54 engine,
• engine swaps between E82, E90, E91, and E92 bodies.

Thanks to this solution, in many cases, you can avoid costly programming from scratch and speed up the process of returning the car to the customer.

Designed for manual transmission

The offered kit is configured for a manual transmission, which is crucial for the correct operation of functions related to torque, traction control, and cooperation with other vehicle modules. Using a controller designed for the correct type of transmission limits the risk of errors in the controller, incorrect reactions to load, or adaptation problems. This is especially important in high-power cars, such as the 135i and 335i versions with the N54 engine.

Condition, verification, and practical application

The product belongs to the Computers and Controllers category and is a used item, which in workshop practice often represents a reasonable compromise between repair costs and maintaining original BMW electronics. This type of kit is frequently chosen by specialized services dealing with E82, E90, E91, and E92 models because it allows for the quick restoration of full engine control system functionality without the need for deep software intervention. Combined with proper diagnostics and installation, it provides a solid foundation for further service work or modifications.

If you are planning a comprehensive repair or modernization of your BMW's engine electronics and need other elements from the same group, such as additional controllers, engine management modules, or auxiliary system controllers, check the available parts in the BMW Computers and Controllers category.

To better assess when choosing a used engine controller and related modules is justified, it is worth reading the guide: A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?