Mercedes R170 SLK 230 Kompressor M111.973 Engine ECU A0235458332 Automatic

Mercedes R170 SLK 230 Kompressor M111.973 Engine ECU for the automatic transmission version is a precision electronic control module responsible for advanced management of the powertrain. As an item in the Electronic control modules and ECUs category, it ensures consistent operation of the injection, ignition, and auxiliary systems, which translates into stable engine performance. This solution is intended for users who expect proven, factory-grade electronics matched to a specific vehicle configuration.

Specifications and technical data

• SKU: A0235458332
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0235458332
• Substitutable numbers: A0235458332, A 023 545 83 32, 0261204915, 0 261 204 915, A1688200426, A 168 820 04 26
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and compatibility

The presented ECU is dedicated to the Mercedes R170 SLK 230 Kompressor model with the M111.973 engine, equipped with an automatic transmission. This means that its software and hardware configuration are prepared to work with the specific powertrain and drivetrain, minimizing the risk of communication issues within the vehicle's network.

The module belongs to the group of factory solutions used by the manufacturer, making it the right choice when replacing a faulty ECU or restoring full functionality to the engine control system. The presence of the OEM part number and interchangeable numbers in the specification facilitates verification of compatibility with a specific equipment version.

Function in the vehicle and benefits of installation

The engine ECU is responsible for:

• coordinating fuel injection and ignition,
• real-time adjustment of operating parameters to load and driving conditions,
• cooperation with the automatic transmission in terms of transmitting key torque data,
• communication with other modules in the vehicle network.

Thanks to the use of an original module from the same family of controllers, calibration consistency and the logic of the powertrain systems are maintained. This translates into predictable vehicle behavior, correct automatic transmission operation, and easier diagnostics in the future.

Product characteristics and condition

The offered item comes from an operated vehicle, which means it is a used part that retains the functionality required for continued operation in the control system. For many users, this represents a reasonable compromise between purchase cost and maintaining factory build quality and fitment.

As a module from the Electronic control modules and ECUs group, it is intended for installation in place of the existing controller, using original connectors and the wiring harness. In practice, this means no need for installation modifications, provided that appropriate adaptation and programming procedures are followed by the workshop.

Installation tips and selection by part numbers

Before purchasing, it is recommended to compare the OEM part number and interchangeable numbers with the vehicle specification or service documentation. This selection method helps reduce the risk of hardware or software incompatibility, especially in the case of versions with an automatic transmission, where the engine ECU works with other modules within a single electronic architecture.

A properly selected module facilitates the adaptation process in the vehicle, as well as subsequent diagnostic maintenance using factory testers. This solution is particularly beneficial for workshops specializing in the Mercedes brand and for users who want to maintain the original electronics configuration.

More information about used electronics

If you want to better understand how to safely choose used engine ECUs, how to interpret part numbers, and what to pay attention to during installation and coding, check out our guide: Used automotive electronics – ECU modules and sensors from the secondary market. You will find practical tips regarding selection by numbers, compatibility, and the most frequently asked questions related to vehicle electronics.

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 auxiliary control systems, check out the available parts in the Mercedes electronic control modules and ECUs category.