Mercedes W164 ML350 CDI 642.820 231HP Engine ECU Kit A6429002900 Ignition + Key

Engine Control Unit (ECU) Kit with Ignition Module and Key for Mercedes W164 ML350 CDI is a precisely matched electronic set designed for the 642.820 engine unit with 231 HP. This used, fully functional kit from the Electronic Control Modules and Units category allows for efficient replacement of a damaged engine control system in automatic transmission and diesel engine versions.

Specifications and technical data

• SKU: A6429002900-10
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6429002900
• Substitutable numbers: A6429002900, A 642 900 29 00, 0281016383, 0 281 016 383, A1649051600, A 164 905 16 00
• Fuel type: Diesel
• Gearbox type: Automatic
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and Compatibility

The presented ECU set is designed to work with the diesel engine in the Mercedes M-Class W164 generation, specifically the ML350 CDI version with 231 HP. Using a complete package – engine control unit, ignition module, and key – facilitates integration with the vehicle's existing system, reducing the need for additional electronic adaptations.

As an Engine Control Unit, the set is responsible for managing the powertrain's operation, including fuel delivery, combustion parameter control, and coordination with the automatic transmission. Consequently, it is a crucial component for restoring proper powertrain function after the original control unit fails.

Function of the ECU, Ignition Module, and Key Set

The kit includes all essential elements required for the cohesive operation of the engine control and security system in a Mercedes vehicle:

• engine control unit responsible for processing signals from sensors and controlling the powertrain's accessories,
• ignition module that works with the starter lock system,
• key matched to the electronic set.

This combination of components ensures compatibility between the engine electronics and the immobilizer system, which is particularly important in modern vehicles with complex electronic architectures. The consistency of the entire kit translates to easier vehicle configuration and reduces the risk of starting problems.

Benefits of Using a Used ECU Kit

Choosing a used ECU kit with an ignition module and key for a Mercedes can significantly reduce repair costs compared to purchasing new components, while maintaining the original manufacturer's specifications. The set is sourced from dismantled vehicles, thus preserving the original connection architecture and system logic.

The main advantages of this solution include:

• original design tailored to a specific engine unit and transmission type,
• maintenance of engine operating parameters consistent with factory settings,
• the ability to restore full control system functionality without altering the vehicle's wiring harness.

Professional Application in the Powertrain System

This engine control unit kit is particularly recommended in situations where the original ECU has been damaged, there are communication issues within the vehicle network, or the starting system is malfunctioning. Using a set with a matched ignition module and key simplifies workshop operations, reducing diagnostic and installation time.

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

Expert Support and Automotive Electronics Knowledge

When working with advanced electronics in premium vehicles, it is advisable to consult reliable sources of information about original components and their impact on the car's character. If you are interested in how appropriately selected electronic modules help maintain the factory characteristics of premium cars, read the article Audi and Pure Emotion. How Used Parts Help Maintain the Brand's DNA?, which illustrates the importance of original components in modern designs.