Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU Kit A2661534179 Key

Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU Kit with Key is a precisely matched set designed for vehicles with a gasoline engine and automatic transmission. Using an original module from the same component family ensures consistency of the powertrain electronics and stable unit operation. This solution is particularly beneficial when replacing a damaged control unit or restoring the system's full functionality.

Specifications and technical data

• SKU: A2661534179-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2661534179
• Substitutable numbers: A2661534179, A 266 153 41 79, A0014460340, A 001 446 03 40, 5WK90926, A1695452932, A 169 545 29 32, A1695451508, A 169 545 15 08
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and Function of the ECU Kit

The Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU Kit is responsible for managing the operation of the A150 gasoline engine, including fuel delivery, ignition control, and cooperation with the automatic transmission. The kit includes the engine control unit with a matching key, which facilitates integration with the factory immobilizer system and reduces the need for additional programming.

Selecting a kit from the same series ensures compatibility with the vehicle's electrical architecture, leading to predictable engine behavior, proper communication with other modules, and correct handling of OBD diagnostic functions.

Benefits of Using an Original Control Module

Using an original electronic control module in the Electronic Control Modules and Controllers class ensures:

• preservation of factory engine maps tailored to the M266.920 unit,
• proper cooperation with the automatic transmission,
• consistency with the vehicle's existing electrical system and CAN network,
• full diagnostic capability using standard service tools.

This makes the kit particularly useful for replacing a damaged control unit when aiming to maintain factory-like engine performance characteristics and minimize the risk of inter-module communication issues.

Integration with Fuel System and Automatic Transmission

The control unit in this kit is designed to work with a gasoline engine, meaning it has appropriate algorithms for controlling injection, ignition, and mixture corrections under various load conditions. Simultaneously, the module is prepared to work with an automatic transmission, ensuring data exchange between the powertrain and the gearbox, which contributes to smooth gear changes and overall powertrain refinement.

Such matching is especially important for vehicles used in urban traffic, where frequent changes in load and speed require stable cooperation between the engine control unit and the transmission control module.

Condition, Compatibility, and Practical Application

The offered kit comes from a Mercedes vehicle and is a used part, allowing for economical repair while maintaining the original manufacturer's specifications. The kit with the key facilitates installation in a car where the previous control unit has suffered electrical or software damage, and it is necessary to restore functionality without altering the entire security system.

Before purchasing, it is advisable to compare your vehicle's configuration (engine type, transmission type, and electronics generation) with the offered kit to ensure maximum compatibility. If necessary, additional coding or adaptation can be performed by a specialized service center, allowing for the full utilization of the module's potential.

More About Used Modules and Electronic Parts

If you are interested in the broader context of using used electronic components in cars, it is worth reading the material on how original components influence the character of a premium vehicle – you can find it here: how used original modules help maintain the premium brand character. This will help you better understand why choosing the right ECU control unit is important for the durability and refinement of the powertrain.