Mercedes W166 W204 Display Screen Information Navigation Dashboard A1729008500

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W166 W204 Display Screen Information Navigation Dashboard is an original component from the Electronic control modules and controllers group, designed for Mercedes factory multimedia and navigation systems. It allows for convenient operation of onboard functions, display of maps, vehicle settings, and system information in a clear, organized format.

Specifications and technical data

• SKU: A1729008500-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1729008500
• Substitutable numbers: A1729008500, A 172 900 85 00
• Category: ECUs & Computer Modules

Purpose and function in the vehicle

The display serves as the central infotainment monitor in Mercedes W166 and W204 class models, working in conjunction with factory control units. It is responsible for presenting the navigation interface, audio menu, vehicle settings, and system messages, which significantly improves operational ergonomics and daily driving comfort.

Thanks to its integration with the vehicle's electrical system, the screen transmits information from various electronic control units, allowing the driver to quickly view key operating parameters of onboard systems without the need for additional external devices.

Benefits of using an original module

Using an original monitor instead of a damaged or worn-out element ensures:

• preservation of the factory cockpit look and interior stylistic consistency,
• proper cooperation with existing controllers and the wiring harness,
• correct operation of navigation functions and the multimedia system menu,
• stable communication with electronic control modules in the vehicle.

For users who value factory electronics integration, this is a solution that allows for restoring full system functionality without compromising on compatibility.

Element characteristics and installation

The display is part of a control system that communicates with other modules via the vehicle's electrical installation. As an element from the Electronic control modules and controllers category, it has been designed to operate in the Mercedes onboard environment, taking into account power parameters, data transmission methods, and safety requirements.

When replacing, it is recommended to:

• select the component based on the OEM number and interchangeable numbers,
• verify compatibility with the specific vehicle equipment version,
• have it installed by a workshop experienced in working with Mercedes electronics.

This approach minimizes the risk of communication problems between modules and allows for maintaining the full functionality of the navigation system and vehicle menu.

Condition and practical application

The element comes from the secondary market, which is a beneficial solution for users looking for proven electronics at a reasonable price, while maintaining the manufacturer's original specifications. Replacing a damaged monitor with a used, original component allows for quickly restoring interface readability, improving operational comfort, and avoiding problems typical of low-quality replacements.

If you are planning a comprehensive repair or upgrade of the cockpit area and multimedia system in your Mercedes and need other elements from the same group, such as control modules, comfort controllers, or navigation units, check the available parts in the Mercedes electronic control modules and controllers category.

Selecting used electronics and additional materials

When choosing a used display for a Mercedes, it is crucial to match it by OEM number, reference numbers, and hardware configuration, as well as to consider the software version of the cooperating controllers. A detailed discussion of selection principles, compatibility issues, and practical installation examples can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

For owners of older Mercedes vehicles who treat their cars as youngtimers and are planning a gradual restoration of the interior and electronics, the following material may also be helpful: The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years, which describes modernization scenarios using components from the secondary market.