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

BMW E90 E92 335i Petrol N54 ECU Kit Control Unit DME CAS3 Key Automatic is a specialized electronic control unit designed for the petrol engine paired with an automatic transmission. This component from the Electronic control modules and controllers category is responsible for precise engine management, ensuring stable parameters and proper communication with other vehicle systems. By using an original BMW solution, consistency with the vehicle's factory electronics architecture is maintained.

Specifications and technical data

• SKU: 7568842-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7568842
• Substitutable numbers: 12147616431, 7616431, 12147568842, 7568842, 5WK93608, 61359147195, 9147195
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The presented engine control unit is designed to work with the N54 petrol engine in the BMW 3 Series E90 model, in a configuration with an automatic transmission. The controller coordinates the operation of the fuel injection system, ignition, and a range of sensors, which translates into appropriate dynamics, smooth operation, and predictable throttle response. Using a dedicated ECU allows for maintaining the performance characteristics typical of this 335i version, without compromising on power or driving comfort.

Integration with vehicle electronics

As a component from the Electronic control modules and controllers category, the engine control unit is a key communication node in the vehicle's network. It works with other modules responsible for, among others, the automatic transmission, safety systems, and comfort features, ensuring the cohesive operation of the entire powertrain. A properly selected controller minimizes the risk of communication errors, reduces the appearance of warning lights, and facilitates diagnostics using factory BMW service tools.

Benefits of using an original ECU

Using an original engine control unit dedicated to the BMW E90 335i N54 offers a number of practical benefits:

• preservation of factory engine control maps, adapted to the characteristics of the petrol engine and automatic transmission,
• proper cooperation with the existing wiring harness and other modules in the vehicle,
• easier adaptation and coding compared to universal solutions or those not assigned to this model,
• consistency with service and diagnostic procedures used in authorized service centers and specialized workshops.

For the user, this means stable powertrain operation, predictable vehicle behavior under various conditions, and the ability to continue maintenance according to factory standards.

Application in vehicles with automatic transmission and petrol engine

The presented controller is intended for configurations where the petrol engine works with an automatic transmission. This combination requires precise data exchange between the engine ECU and the transmission control module to ensure smooth gear shifts, proper torque management, and protection of mechanical components. A properly selected engine control unit supports:

• smooth gear shifting under various loads,
• fuel consumption optimization in typical road conditions,
• stable idle operation and smooth maneuvering,
• proper functioning of the driving modes offered by the automatic transmission.

Support with selection and additional materials

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 controllers, comfort modules, or powertrain management units, check the available parts in the BMW electronic control modules and controllers category.

For those interested in the broader context of using used electronic components in premium cars, including their impact on maintaining the brand's character, our blog article may be helpful: Audi and emotions in their purest form – how used parts help maintain the brand's DNA. Although it concerns a different brand, it clearly demonstrates the importance of properly selected, original modules in modern vehicles.