Mercedes X164 Engine Control Unit 5.5 Petrol 387HP Automatic A2731535279 Kit Set

Mercedes X164 Engine Control Unit 5.5 Petrol 387HP Automatic Kit Set is a complete set from the Electronic control modules and ECUs group, designed for Mercedes vehicles with a 5.5 petrol engine working with an automatic transmission. The set ensures consistent, factory-standard control of the powertrain operation, which translates into stable power characteristics and proper cooperation with the automatic gearbox.

Specifications and technical data

• SKU: A2731535279-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2731535279
• Substitutable numbers: A2731535279, A 273 153 52 79, A 273 153 47 79, A2731534779, A 273 153 55 79, A2731535579
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the control unit

The presented control set has been designed for a high-power petrol unit working with an automatic transmission. It is responsible for precise management of engine operating parameters and communication with other vehicle modules, which is crucial for smooth acceleration, stable idle speed, and correct operation of automatic modes. Thanks to its dedicated fitment to a specific powertrain configuration, the control unit allows for maintaining factory characteristics without the need for interference with the electrical installation beyond the standard assembly and adaptation procedure. This solution is particularly beneficial for professional repairs where compliance with the original Mercedes electronic architecture is essential.

Benefits of using the original control set

Using a complete module from the same construction group allows for reducing the risk of communication problems within the vehicle network and diagnostic errors. In practice, this means:

• maintaining the petrol engine performance characteristics intended by the manufacturer,
• proper cooperation with the automatic transmission,
• consistency of software and configuration within the control systems,
• easier diagnostics in the future using factory service tools. For workshops and users, this means a more predictable repair process and a lower risk of needing to replace electronic components again. In the case of higher-power vehicles, such as 5.5 petrol units, this is of particular importance for the durability of the powertrain and driving comfort.

Product characteristics and practical application

As an element from the Electronic control modules and ECUs category, the set is intended for operation in an environment with increased temperature and electrical requirements, typical for the engine bay and automatic transmission installations. The module's design takes into account the specifics of the petrol unit, including fuel dosing, ignition control, and cooperation with safety and comfort systems. In practice, the set will work well both when replacing a damaged control unit and during a comprehensive rebuild of the powertrain in a Mercedes X164 series with a petrol engine and automatic transmission. It enables the restoration of stable engine operation, which is especially important after major mechanical or electrical failures.

Selection, compatibility, and purchase support

To correctly select this set for a specific vehicle, it is worth paying attention to the compatibility of the manufacturer's markings and the powertrain configuration (fuel type and transmission type). Proper matching has a direct impact on the correctness of coding, adaptation, and subsequent trouble-free operation. If you want to deepen your knowledge about selecting original electronic modules and the impact of used parts on maintaining the character of a premium brand, the article on our blog may be helpful: Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?. You will find practical tips there regarding working with factory electronic components, which are also universal in the context of other brands. If you are interested in a broader approach to the topic of selecting used electronic components, including control units, it is also worth checking out the guide: how to professionally select used car parts, saving time and nerves. The information contained there about compatibility and OEM numbers will facilitate an informed choice of the appropriate module.

Related Mercedes Electronic control modules and ECUs

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as engine control modules, automatic transmission controllers, or additional accessory management units, check the available parts in the Mercedes Electronic control modules and ECUs category.