Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU A0024463140 Automatic

Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU Automatic is a precise electronic control module, specifically designed for the petrol engine of this series. It is responsible for accurate engine management, cooperation with the automatic transmission, and stable communication with other vehicle systems, which translates into predictable performance and driving comfort.

Specifications and technical data

• SKU: A0024463140
• Mark: Mercedes (Genuine OE)
• OEM Part Number: A0024463140
• Substitutable numbers: A0024463140, A 002 446 31 40, A2669000300, A 266 900 03 00, 5WK90982
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and compatibility

The presented control unit is dedicated to the Mercedes A-Class W169 generation, A150 version with the M266.920 95 HP engine. The module's design has been developed for compatibility with the petrol powertrain and the automated transmission system, ensuring that the fuel injection, ignition, and torque control logic are consistent with the characteristics of this unit.

The control electronics have been prepared to operate within the Mercedes electrical architecture, which ensures proper communication with the CAN bus, the instrument cluster, the automatic transmission module, and other controllers in the vehicle. This makes it possible to maintain factory engine operating parameters and predictable vehicle behavior under various operating conditions.

Function in the powertrain

As an item from the Electronic control modules and ECUs category, this ECU is responsible for key processes in the powertrain. Its tasks include, among others, analyzing sensor signals, calculating optimal engine operating parameters, and sending appropriate commands to actuators. In the case of the version with an automatic transmission, torque synchronization with gear shift logic is particularly important, which affects the smoothness of acceleration and downshifting.

A properly selected control unit allows for maintaining stable idle speed, correct throttle response, and predictable vehicle behavior under load. Proper cooperation with the petrol system also helps to keep fuel consumption at a level close to factory values.

Benefits of using a dedicated ECU

Using the correct engine control unit in a Mercedes W169 A150 brings a number of practical benefits:

• maintaining the operating characteristics of the M266.920 unit in accordance with the manufacturer's specifications,
• consistent cooperation with the automatic transmission, without unwanted jerking or delays,
• stable communication with other electronic modules of the vehicle,
• possibility of professional diagnostics and adaptation using factory service tools,
• reduction of the risk of errors resulting from the use of an inappropriate or mismatched control unit.

A well-selected ECU also facilitates subsequent service maintenance – engine operating parameters are readable for diagnostic testers, and adaptation procedures are carried out in accordance with Mercedes technical documentation.

Application in service practice

This control unit will work well both for a typical replacement of a damaged module and for more complex powertrain repairs in a Mercedes A-Class. In combination with properly functioning sensors and electrical wiring, it allows for restoring correct starting, smooth idle operation, and predictable reactions to load. This solution is particularly useful in vehicles used on a daily basis, where operational repeatability and parameter stability are essential.

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 controllers, engine management modules, or ECU units, check the available parts in the Electronic control modules and ECUs Mercedes category.

Technical support and additional information

When working with vehicle electronics, it is worth using reliable sources of knowledge and proven service procedures. If you are interested in how original modules and controllers affect the behavior of modern premium cars, take a look at the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which discusses the importance of properly selected electronic components for maintaining the car's character.

For those considering modifications to vehicle operating parameters or performance optimization using used components, the guide Tuning with used parts – how to gain performance without spending a fortune, which describes a safe approach to changes in the powertrain and control electronics, may also be helpful.