Mercedes W203 C220CDI OM611.692 116HP Engine Unit ECU Kit A6111537779 Key Lock

Mercedes W203 C220CDI OM611.692 116HP Engine Unit ECU Kit Key Lock is a specialized electronic control unit for diesel engines, designed to work with the OM611 unit and an automatic transmission. As an item in the Electronic control modules and controllers category, it is responsible for the precise management of the powertrain, ensuring stable driving parameters and proper communication with other vehicle systems. This is a solution for users looking for a proven ECU controller tailored to the specifics of the C220CDI model.

Specifications and technical data

• SKU: A6111537779-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6111537779
• Substitutable numbers: A6111537779, A 611 153 77 79, 0 281 014 661, 0281011001, 0 281 011 001, A2095453108, A 209 545 31 08
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented engine computer has been designed to work with a diesel engine and an automatic transmission. It is responsible for coordinating key engine operating parameters, such as fuel dosage, injection timing, or response to sensor signals, as well as exchanging data with other vehicle modules via the communication bus.

Thanks to its dedicated fit for the C220CDI powertrain with the OM611 engine, the controller allows for maintaining the factory characteristics of the power unit, which translates into predictable performance, proper operating culture, and compliance with the factory electronics configuration.

Benefits of using a dedicated ECU

Using the correct engine computer in a vehicle with a diesel engine and an automatic transmission has a direct impact on:

• stability of the power unit under full load range,
• proper cooperation with the automatic transmission,
• consistency of communication with other electronic modules,
• possibility of diagnostics in accordance with factory procedures.

Selecting a controller from the appropriate reference group allows you to avoid problems with compatibility, communication errors, or incorrect powertrain response to driver commands. This is particularly important in the case of advanced diesel engine management systems, where many parameters are closely linked.

Product characteristics and practical application

The offered module belongs to the Electronic control modules and controllers group, which means it is a central element for the operation of the powertrain in a given vehicle. Its design is intended for installation in factory mounting points, using original electrical wiring connectors, which facilitates integration with the existing harness.

The product is intended for Mercedes vehicles equipped with the OM611 engine in the C220CDI version and an automatic transmission. In practice, this means it can be used both when replacing a damaged controller and during powertrain repairs where maintaining compliance with the factory electronics configuration is required.

Condition, verification, and selection of the appropriate module

The item comes from the secondary market, which allows for an economical restoration of the engine control system's efficiency while maintaining the original specification. Before installation, it is recommended to verify compatibility with the vehicle in terms of engine type, fuel type, and transmission used, as well as to consider adaptation or programming procedures required for the specific car.

To correctly select a controller, it is worth using the manufacturer's markings, OEM part number, and interchangeable numbers, which are listed in the product's technical specification. This helps reduce the risk of incompatibility and speeds up the service process, especially in the case of advanced diesel systems with automatic transmissions.

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 engine controllers, comfort modules, or transmission controllers, check the available parts in the Electronic control modules and controllers Mercedes category.

More about used automotive electronics

When choosing a used engine computer, it is worth knowing the basic principles of selecting and installing such components, as well as typical procedures related to programming and adaptation. Practical tips on when it is worth reaching for a used ECU, comfort module, or parking sensors, and how to assess their suitability, can be found in the article A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.