Mercedes W168 A 160 CDI OM668 Engine Control Module A6681530979

Mercedes W168 A 160 CDI OM668 Engine Control Module is a factory electronic control unit designed for the OM668 diesel engine in the A 160 CDI model with an automatic transmission. This component from the Electronic control modules and controllers category is responsible for precise engine management, ensuring stable driving characteristics and proper cooperation with the automatic gearbox. Thanks to its original design, it provides a solid foundation for professional powertrain repair in the Mercedes A-Class W168.

Specifications and technical data

• SKU: A6681530979
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6681530979
• Substitutable numbers: A6681530979, A 668 153 09 79, 0281011152, 0 281 011 152
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented engine control module is designed specifically for use with the OM668 engine in the A 160 CDI version, integrated with an automatic transmission. The controller analyzes sensor signals, coordinates fuel injection, boost control, and auxiliary equipment operation to maintain stable engine performance parameters. A properly selected ECU module is crucial for correct starting, smooth idling, and seamless acceleration.

Compatibility with automatic transmission

This engine control module is configured to work with an automatic transmission, which is important when selecting a replacement part. Proper matching of the controller to the transmission type affects:

• correct communication between the engine and the transmission control module,
• smooth gear shifts under various load conditions,
• stable vehicle behavior during starting, downshifting, and engine braking.

As a result, the engine control module supports comfortable, predictable powertrain operation, which is particularly important in daily urban driving.

Application in the vehicle's electronic system

As an element from the Electronic control modules and controllers group, this engine control module works with other onboard modules to create a cohesive vehicle management system. A correctly selected controller allows for:

• maintaining compliance with the factory electrical architecture of the Mercedes W168,
• maintaining correct communication within the vehicle network,
• facilitating computer diagnostics and parameter adaptation after installation.

For workshops and users, this means the ability to carry out repairs based on original design solutions, without the need for wiring interference or additional modifications.

Characteristics of the used product

The offered engine control module is a used part, which allows for economical vehicle repair while maintaining factory specifications. In practice, such a module is often chosen as a reasonable alternative to new controllers, especially in older model generations. Before installation, a standard diagnostic procedure is recommended, as well as, if necessary, software adaptation to the specific vehicle by a specialized service center.

Technical support and knowledge development

If you are interested in the broader context of electronic engine control unit operation, onboard system management, and the use of salvaged parts, it is worth reading the article dedicated to modules in premium class vehicles: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models. Although it concerns a different brand, it discusses universal issues related to diagnostics, selection, and operation of electronic controllers.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as controllers, engine management modules, or fuel injection system components, check the available parts in the Mercedes electronic control modules and controllers category.

For users who want to further optimize service costs while also considering the environmental aspect, the guide describing the benefits of reusing automotive components may also be helpful: Eco-driving: discover the benefits of used car parts. It allows for a better understanding of how the conscious selection of used electronic modules fits into a modern approach to vehicle operation.