Mercedes W204 C220CDI 170HP OM646.811 Engine ECU Kit Key Lock A6461509372

Mercedes W204 C220CDI 170HP OM646.811 Engine ECU Kit Key Lock is a specialized component from the Electronic control modules and ECUs category, designed for the lock system and key operation in Mercedes diesel vehicles. This solution allows for restoring the proper operation of the comfort system and ensures safe use of the vehicle with an automatic transmission.

Specifications and technical data

• SKU: A6461509372-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6461509372
• Substitutable numbers: A0054467440, A 005 446 74 40, A2079057201, A 207 905 72 01, A6461509372, A 646 150 93 72
• Fuel type: Diesel
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The presented ECU is dedicated to Mercedes C-Class W204 generation models with the C220CDI 170 HP engine and OM646.811 designation. It is responsible for the electronic operation of the lock and communication with the key, integrating with the vehicle's electrical system and working with other comfort and security modules.

The component is designed for use in vehicles with a diesel engine and automatic transmission, which is important when selecting the correct module for a specific vehicle configuration. This makes it possible to maintain the consistency of the vehicle's electronics and ensure the proper operation of functions related to engine starting and the immobilizer.

Benefits of using an original module

Using an ECU from the same design family as the factory component reduces the risk of compatibility issues and communication errors in the vehicle's network. In practice, this means:

• stable cooperation with the lock and key system,
• proper integration with security systems,
• maintaining the comfort electronics logic intended by the manufacturer.

The product comes from the Mercedes brand, which helps maintain consistency in electrical and software parameters relative to the original vehicle configuration.

Characteristics and practical application

The ECU is intended for installation in diesel vehicles where proper cooperation between modules responsible for starting, ignition locking, and central locking operation is essential. In combination with an automatic transmission, it ensures the correct sequence of signals necessary for safely starting and stopping the engine.

As an item in the Electronic control modules and ECUs category, it can be used both for routine repairs and for more extensive work related to comfort system diagnostics. This allows for restoring vehicle functionality without the need for universal solutions, which often require additional wiring modifications.

Product condition and installation aspects

The offered module is in used condition, which allows for an economical restoration of the electronic system's efficiency while maintaining an appropriate level of quality. Before installation, it is recommended to verify compatibility with the vehicle configuration and perform standard diagnostic procedures to ensure proper cooperation with other ECUs in the car.

In many cases, installation requires the use of appropriate diagnostic equipment to adapt or configure the module in the vehicle, in accordance with the service procedures provided for the given Mercedes generation.

Expanding the electronics system in your Mercedes

If you are planning a comprehensive repair or upgrade of the comfort electronics area in your Mercedes and need other components from the same group, such as central locking control modules, comfort ECUs, or units responsible for key operation, check the available parts in the Mercedes Electronic control modules and ECUs category.

For drivers interested in the broader context of using original electronic modules and the impact of used components on maintaining the brand's character, an article describing how properly selected parts restore factory vehicle properties may be helpful – more information can be found in the post Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.

If you want to reduce your car's downtime in the workshop and better plan your electronics repair, it is also worth reading the material on used parts logistics and the availability of a wide assortment in one place, described in the article No more waiting for weeks – how a wide assortment in one warehouse really shortens your car's downtime at the mechanic?.