Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU Kit A6519000700 Key Lock

Complete Engine Control Unit (ECU) with ignition switch and key for Mercedes W906 313 CDI with OM651.955 engine is a solution designed for diesel-powered vehicles, enabling a cohesive replacement of the entire control system. The set comes from the Electronic Control Modules and Controllers group, ensuring proper integration with the vehicle's electrical system and security system. This is a practical offering for workshops and users who want to restore the original engine electronics configuration in the 313 CDI model.

Specifications and technical data

• SKU: A6519000700-5
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6519000700
• Substitutable numbers: A6519000700, A 651 900 07 00, A6519010600, A 651 901 06 00, A9069004100, A 906 900 41 00, A0375456132, A 037 545 61 32
• Fuel type: Diesel
• Category: ECUs & Computer Modules

Purpose and Function of the ECU Set

The presented set includes the electronic engine control unit along with components responsible for start authorization, which is particularly important in modern Mercedes security systems. The set is dedicated to diesel engine vehicles, ensuring that the control logic for fuel injection, boost pressure, and auxiliary equipment operation is adapted to the specifics of the diesel unit. Combining the control unit with the appropriate ignition switch and key facilitates the restoration of correct CAN network communication and eliminates typical immobilizer issues after replacing the module alone.

Benefits of Using a Complete Set

Using a complete ECU set with an ignition switch and key allows for reduced diagnostics and programming time compared to installing individual, unpaired components. For workshops, this means more efficient repairs, and for the user, a faster return of the vehicle to full operational status. Electronic consistency within a single vehicle reduces the risk of module conflicts, communication errors, and engine starting problems after installation.

For diesel engines, the correct cooperation between the control unit and engine peripherals is crucial, which is why a set from a single vehicle configuration provides a safe basis for further adaptation. Electronic control modules and controllers in this form are often chosen for major repairs, overhauls, or engine replacements with units of similar parameters.

Technical Characteristics in the Context of a Diesel Engine

Diesel engines require precise control of injection, fuel pressure, and auxiliary systems, making a properly selected ECU critical for stable engine operation. The presented set is designed for diesel-powered configurations, ensuring compatibility of injection maps, cold start strategies, and support for typical systems used in modern diesels.

This allows for maintaining correct engine operating parameters after replacing a damaged control unit, without the need for deep software intervention. Proper module matching to the fuel type reduces the risk of adaptive errors, rough idling, or power loss during operation.

Condition, Verification, and Practical Application

The component comes from the aftermarket, allowing for economical vehicle repair while maintaining the original Mercedes electronic architecture. Sets of this type are particularly useful for:

• replacing a damaged engine control unit after an electrical failure or flooding,
• immobilizer problems and inability to start the engine,
• adapting a used engine of the same specification to the vehicle's existing electrical system.

For professional service centers and advanced users, this is a convenient solution that allows them to focus on correct installation and basic adaptation, rather than time-consuming matching of individual modules.

Related Categories and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as control units, comfort modules, or engine management systems, check the available parts in the Mercedes Electronic Control Modules and Controllers category.

To better understand the specifics of modern electronic modules, their diagnostics, and the possibilities of using salvaged parts, it is worth reading the guide on our blog: Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Salvaged Parts?. The article discusses practical aspects of working with vehicle electronics, which are also helpful when servicing control systems in other brands.

Summary

Mercedes W906 313 CDI OM651.955 Diesel – Complete ECU with Ignition Switch and Key is a practical solution for those who want to restore the correct operation of the engine control system in their vehicle. The set from the Electronic Control Modules and Controllers group facilitates installation, reduces the risk of immobilizer problems, and provides a solid basis for further vehicle configuration after repair or engine replacement.