Mercedes W164 Tailgate Module Power Trunk Lid Control Unit ECU A1648204926

The Mercedes W164 Tailgate Module Power Trunk Lid Control Unit ECU is a component from the Electronic control modules and controllers category, responsible for the operation of the electrically opened and closed trunk lid. This used control unit ensures the preservation of the factory operating logic of the tailgate, integrating seamlessly with the vehicle's electrical installation and comfort systems.

Specifications and technical data

• SKU: A1648204926
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1648204926
• Substitutable numbers: A1648204926, A 164 820 49 26
• Category: ECUs & Computer Modules

Purpose and function of the tailgate control unit

The Mercedes W164 Tailgate Module Power Trunk Lid Control Unit ECU is responsible for controlling the tailgate drive in Mercedes SUV vehicles of this series. The module manages signals from buttons, sensors, and comfort systems, coordinating:

• smooth opening and closing of the trunk lid,
• response to signals from the remote control and interior buttons,
• cooperation with the lighting installation and safety systems.

This ensures the consistency of the entire electrical system's operation, keeping the trunk operation convenient and predictable for the user.

Benefits of using an original Mercedes module

The original module from the Electronic control modules and controllers category ensures compatibility with the Mercedes electrical architecture without the need for harness modifications or non-standard software. In practice, this means:

• maintaining the factory functionality of the trunk lid,
• consistency with other control units in the vehicle,
• reduced risk of communication errors within the vehicle network.

Choosing such a solution is particularly important for vehicles equipped with extensive comfort systems, where proper module cooperation is crucial for the stability of the entire installation.

Condition, installation, and service aspects

The presented module is a used component, which allows for an economical repair of the tailgate control system while maintaining the original manufacturer's specifications. Before installation, a standard service procedure is recommended, including:

• verifying the vehicle's electrical installation for previous faults,
• checking connectors and harnesses for corrosion and mechanical damage,
• performing computer diagnostics after installing the module.

This approach facilitates the quick restoration of full trunk lid functionality and limits the risk of recurring failures resulting from installation issues.

Integration with other modules and system expansion

The tailgate control module works with other comfort controllers, so it is worth considering the entire system during major modernization work. If you are planning a comprehensive repair or upgrade of the comfort installation area in your Mercedes and need other components from the same group, such as window regulators, central locking modules, or comfort units, check the available parts in the Mercedes electronic control modules and controllers category.

More about used parts and youngtimers

For models from years that are increasingly treated as youngtimers, using original used control units allows you to maintain the character of the vehicle and its compliance with factory specifications. It is worth learning about the broader context of using such solutions – practical tips on selection and operation can be found in the article The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 era.

To compare how different manufacturers approach maintaining brand character using original components, you can also read material dedicated to another premium manufacturer: Audi and pure emotion. How do used parts help maintain the brand's DNA?. This will allow you to better understand how important the selection of the right electronic modules is for your Mercedes as well.