Mercedes W168 A170 CDI 95HP OM668.942 Engine Control ECU Kit A0275454132 + Key

Mercedes W168 A170 CDI 95HP OM668.942 Engine Control ECU Kit is a specialized electronic control unit designed for the diesel engine paired with an automatic transmission. This controller from the Electronic control modules and ECUs category is responsible for precise engine management, ensuring stable driving characteristics and proper cooperation with the drivetrain automation. Thanks to its factory design specifically for the A170 W168 model, it is the right choice for professional engine control system repairs.

Specifications and technical data

• SKU: A6681530279-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6681530279
• Substitutable numbers: A6681530279, A 668 153 02 79, 0281010793, 0 281 010 793, A1685451332, A 168 545 13 32, A1688200426, A 168 820 04 26, KZ
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The presented engine computer is dedicated to Mercedes W168 series vehicles in the A170 version with a diesel engine and automatic transmission. As a central element of the control system, it is responsible for analyzing sensor signals, selecting fuel dosage, ignition timing, and coordinating operation with the automatic transmission. A correctly selected controller allows for the restoration of factory engine performance parameters after the failure of the previous module.

Benefits of using the correct engine computer

Using the appropriate controller in the A170 W168 translates into a number of practical benefits in daily operation:

• stable diesel engine operation across the full rev range,
• proper cooperation with the automatic transmission,
• consistency with the vehicle's factory electrical installation,
• possibility of correct computer diagnostics based on original control maps,
• reduction of the risk of errors and limp mode resulting from an unsuitable module.

For workshops and users, this means more predictable vehicle behavior, easier diagnostics, and the possibility of effective repair without the need for costly wiring modifications.

Technical characteristics in the context of the drivetrain

This engine computer is configured for a diesel engine and automatic transmission, which is crucial when selecting parts. It is responsible for:

• handling specific injection and ignition maps for the diesel unit,
• coordinating engine torque with the automatic transmission gear-shifting logic,
• communication with other controllers in the vehicle within the electronic network.

As a result, the module can be integrated into the existing vehicle system without the need for mechanical installation adaptations, requiring only standard programming and coding procedures used for this model.

Application in professional service and repairs

As an element from the Electronic control modules and ECUs category, this engine computer is suitable for both independent workshops and services specializing in the Mercedes brand. It enables:

• restoration of full control system functionality after damage to the previous module,
• execution of repairs in accordance with the vehicle manufacturer's specifications,
• maintaining the consistency of the vehicle configuration with original equipment.

For the end user, this means the ability to restore proper engine and automatic transmission operation without the need for interference with the engine's mechanics.

Expanding the control system in a Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional controllers, engine management modules, or units cooperating with drivetrain automation, check the available parts in the Electronic control modules and ECUs Mercedes category.

If you are interested in a broader context regarding the use of used controllers and modules in modern premium cars and the impact of original components on driving characteristics, it is worth reading the article Audi and pure emotion. How do used parts help maintain the brand's DNA?, which shows how properly selected electronic modules help preserve the vehicle's factory properties.