Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU Kit A6519003203 Key Lock

Complete Engine Control Unit (ECU) with ignition switch and key for Mercedes Sprinter W906 313 CDI with OM651.955 engine is a solution designed for diesel engines, enabling consistent, factory-standard electronic integration with the powertrain. The set includes the electronic engine control module along with immobilizer components, facilitating the restoration of proper vehicle operation after a breakdown or engine replacement. By maintaining the completeness of the control system, issues with vehicle matching and coding can be minimized.

Specifications and technical data

• SKU: A6519003203-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6519003203
• Substitutable numbers: A6519003203, A 651 900 32 03, A6519012902, A 651 901 29 02, A9069004100, A 906 900 41 00
• Fuel type: Diesel
• Category: ECUs & Computer Modules

Purpose and Function of the ECU Kit

This complete set is dedicated to the Mercedes Sprinter generation W906, specifically the 313 CDI version with the OM651.955 diesel engine. The electronic control module is responsible for precise management of the diesel engine's operation – fuel injection, turbocharging control, combustion parameter monitoring, and interaction with other vehicle systems.

Connecting the engine control unit with a matched ignition switch and key ensures consistency within the security system, which is particularly important in modern systems with advanced immobilizers. Such a kit minimizes the risk of software conflicts and issues with start authorization.

Benefits of Using a Complete Set

Utilizing a complete ECU set with key and ignition switch in the Sprinter W906 313 CDI offers several practical advantages:

• Engine electronics and immobilizer consistency without the need to source individual components,
• Reduced time required for diagnostics and control system configuration,
• Maintained proper operation with the OM651.955 diesel engine,
• Ability to restore full vehicle functionality after damage to the original control unit.

For workshops and service centers specializing in the Mercedes brand, this kit is a convenient service solution that simplifies engine electronics repairs.

Technical Characteristics and Vehicle Integration

As an item in the Electronic Control Units and Controllers category, the ECU set communicates with the vehicle's network, collecting data from sensors and transmitting signals to the diesel engine's actuators. A correctly selected control module is crucial for:

• Maintaining stable RPMs and smooth operation of the diesel engine,
• Controlling exhaust emissions according to factory specifications,
• Proper functioning of engine protection systems (limp mode, power limitation),
• Communication with other vehicle controllers (e.g., ABS, ESP, gearbox – if applicable).

The set with the ignition switch and key simplifies integration with the existing electrical system, as the components are already linked in terms of coding. In practice, this means fewer potential incompatibilities during vehicle adaptation.

Application in Service and Diagnostics

In a professional workshop dealing with Mercedes commercial vehicles, such an ECU set is useful for both typical replacement of a damaged control unit and for more complex powertrain repairs. It can be used as:

• A replacement part for a permanently damaged original module,
• A base for further configuration and adaptation in the vehicle,
• An auxiliary component for advanced diagnostics of starting or immobilizer communication issues.

The used condition allows for economical restoration of vehicle functionality while preserving the original electronic architecture of the Mercedes.

Expanding the Control System in Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and require other parts from the same group, such as additional controllers, auxiliary modules, or engine management units, check the available parts in the Mercedes Electronic Control Units and Controllers category.

To compare how original electronic modules influence a vehicle's character, it's worth reading an article describing how to maintain the factory properties of the Audi brand – you can find it here: Audi and Pure Emotion – How Used Modules and Components Help Maintain the Brand's DNA.