BMW E90 E91 E92 335i Petrol N54 ECU Kit Control Unit DME 7568842 CAS3 Key Manual

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E90 E91 E92 335i Petrol N54 ECU Kit Control Unit DME CAS3 Key is a set from the Electronic control modules and controllers category, designed for advanced engine management in BMW 3 Series models with the N54 engine. The kit includes the ECU DME engine controller along with the CAS3 module and key, providing a solid foundation for professional repair or adaptation of engine electronics in vehicles with a manual transmission and petrol engine.

Specifications and technical data

• SKU: 7568842-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7568842
• Substitutable numbers: 7568842, 12147568842, 7616431, 12147616431, 5WK93608, 61356943814, 6943814
• Fuel type: Petrol
• Gearbox type: Manual
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the ECU DME CAS3 kit

The presented kit is dedicated to BMW 3 Series vehicles of the E90, E91, and E92 generations in the 335i version with the N54 engine, where it plays a key role in controlling engine performance parameters. The ECU DME engine controller is responsible for precise fuel injection, ignition control, and cooperation with sensors and actuators, while the CAS3 module integrates start authorization functions and communication with the key. As a result, the set ensures consistent operation of the drivetrain and the vehicle's security system.

Drivetrain compatibility

The kit has been designed to work with a petrol engine and a manual transmission, which is particularly important when selecting a controller for a specific vehicle configuration. In practice, this means:

• maintaining the correct control maps for the N54 unit with petrol supply,
• adjusting operating logic to the manual transmission,
• consistent communication with other modules in the vehicle.

Thanks to this, the ECU DME kit with CAS3 and key can serve as a suitable base for vehicle repair after an engine electronics failure or when replacing a damaged controller.

Benefits of using a complete kit

Choosing a kit that includes the engine controller, CAS3 module, and key offers a number of practical advantages in the service process:

• easier adaptation in the vehicle thanks to the maintained consistency of elements from a single set,
• the possibility of using the kit as a base for programming and matching to a specific BMW unit,
• reducing the risk of problems with start authorization and communication between modules.

A set configured in this way from the Electronic control modules and controllers category is particularly useful in workshops specializing in BMW electronics and for repairs requiring the replacement of several related modules simultaneously.

Characteristics of the used product

The components come from the secondary market, which allows for cost-effective restoration of the engine control system while maintaining the manufacturer's original specifications. A used ECU DME kit with CAS3 and key can be a valuable solution in situations where a new set is difficult to obtain or not cost-effective, and the priority is to maintain compatibility with the factory BMW electronic architecture.

Expanding the control system in BMW

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 engine management systems, check out the available parts in the BMW electronic control modules and controllers category.

Technical support and selection of BMW electronics

When working with elements such as the ECU DME, CAS module, or comfort system controllers, correct programming and matching to the specific 3 or 5 Series model is crucial. To better understand the principles of selecting and operating used BMW electronic modules, it is worth reading the article: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models using dismantled parts?

Summary

BMW E90 E91 E92 335i Petrol N54 ECU Kit Control Unit DME CAS3 Key is a practical, complete set from the Electronic control modules and controllers category, intended for vehicles with a petrol engine and manual transmission. By combining the engine controller, CAS3 module, and key, it provides a solid foundation for professional repair or replacement of the control system in specialized workshops dealing with BMW electronics.