Mercedes W204 Coupe Window Lifter Switch Driver's Side Power Fold A1729056900

Mercedes W204 Coupe Window Lifter Switch Driver's Side Power Fold is an original component from the Switches, control elements and ignition locks group, designed for precise control of the window and mirrors in the driver's door. This practical solution allows for convenient management of settings from a single module, maintaining the factory ergonomics of the Mercedes interior.

Specifications and technical data

• SKU: A1729056900-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1729056900
• Substitutable numbers: A1729056900, A 172 905 69 00
• Category: Switches & Controls

Function and application in the Mercedes W204 Coupe

The described switch is dedicated to the driver's door in the Mercedes W204 Coupe model and is responsible for controlling the electric window lifter and powering the power-folding mirror function. This gives the driver quick access to key settings from a single, logically designed control panel.

This component works with the vehicle's factory electrical system, which allows for consistent operation with other comfort modules. Using an original switch reduces the risk of communication issues within the vehicle's network and ensures the correct response to every button press.

Construction and control ergonomics

The switch has been designed for convenient operation from the driver's position – the button layout is intuitive, and the travel and mechanical resistance are selected to enable reliable, repeatable control of the window and mirrors. The panel design is matched to the shape of the W204 Coupe door trim, which facilitates installation and ensures aesthetic integration with the factory finish.

Appropriately selected housing and button materials promote stable operation under daily usage conditions, and the electrical contact layout is adapted for multiple switching cycles. As a result, the module maintains functionality during typical use in urban and extra-urban traffic.

Condition, verification and preparation for installation

The item comes from the secondary market, which allows for an economical replacement of a damaged module while maintaining the manufacturer's original specifications. Before being offered for sale, the switch is verified for the operation of the window control function and power-folding mirror support to ensure the user has efficient operation after installation.

Using an original component from the same model group facilitates installation in place of the factory switch, without the need for harness modifications or interference with the electrical system. This solution is particularly beneficial for post-accident repairs, replacing worn control elements, or restoring full functionality to the driver's door.

Benefits of using the original switch

• Factory fit for the driver's door in the Mercedes W204 Coupe.
• Integration of window control and power-folding mirror function in a single module.
• Consistency with the original comfort system and vehicle electrical installation.
• Economical alternative to a new component while maintaining manufacturer specifications.
• Possibility to restore full control functionality after failure or mechanical damage.

If you are planning a comprehensive repair or upgrade of the driver's door control zone in your Mercedes and need other elements from the same group, such as button modules, mirror switches, or ignition lock elements, check the available parts in the Mercedes Switches, control elements and ignition locks category.

Safety and selection of used electrical components

When choosing used electrical and control components, it is worth paying attention to their origin, compatibility with a specific body version, and the correct operation of all functions. An approach similar to that used when selecting brake system components can be helpful – thorough verification, testing, and comparison with factory specifications.

More practical tips on safely choosing parts from the secondary market can be found in the article: Second-hand brake system: how to safely choose discs, calipers and ABS?.