Window Lifter Carrier Mercedes EQA H243 W247 Door Rear Left N/S A2477300903

Window Lifter Carrier Mercedes EQA H243 W247 Door Rear Left N/S is an original component from the Window regulators and motors group, designed for operating the window in the rear left door of Mercedes vehicles. It ensures stable window guidance and proper integration with the factory control mechanism, which translates into comfort during daily use.

Specifications and technical data

• SKU: A2477300903
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2477300903
• Substitutable numbers: A2477300903, A 247 730 09 03
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function of the window lifter

The presented window lifter is dedicated for installation in the rear left door, where it is responsible for the precise raising and lowering of the window along the guide rails. The design is adapted to the body geometry of the EQA H243 / W247 series, which allows for maintaining the correct window pressure against the seals and reducing unwanted vibrations while driving.

The component belongs to the Window regulators and motors group, allowing it to work with the factory window control system, both in pulse mode and with standard control from the door panel or driver's console (depending on the specific vehicle equipment).

Construction and vehicle fitment

The window lifter has been designed as a part structurally compatible with factory mounting points in the door, which facilitates installation and reduces the need for additional modifications. The guide rail system and window mounts are optimized for:

• stable guidance of the glass pane throughout its entire range of motion,
• proper sealing of the window against the door frame,
• maintaining correct geometry relative to seals and decorative trim.

Thanks to this, after proper installation, the window operates smoothly, without jamming or excessive play, which is important for both acoustic comfort and protecting the interior from moisture.

Benefits of using an original window lifter

Using an original window lifter in the rear left door provides a number of practical operational benefits:

• Compatibility with factory equipment – matching the serial mounts, guides, and adjustment points in the Mercedes door.
• Consistent operation with the electrical system – proper cooperation with window control switches and overload protection.
• Reduction of noise and rattling in the door – correct window guidance reduces mechanical stress and wear on moving parts.

This solution is particularly recommended when replacing a damaged or worn mechanism, when you want to maintain factory window performance parameters and vehicle aesthetics.

Product characteristics and service application

The rear left door window lifter is suitable for both standard repairs after a mechanism failure and for bodywork and paint jobs, where disassembly and reassembly of moving door components are necessary. It allows for the restoration of full window functionality after:

• mechanical damage to guides or cables,
• seizing or blocking of the mechanism,
• improper window operation manifesting as jerking or lack of response to controls.

Due to the preservation of factory geometry and design, the installation process is predictable for an experienced service center, and after proper adjustment, it is possible to achieve performance parameters similar to original equipment solutions.

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other components from the same group, such as window lifting mechanisms, drives, or guides, check the available parts in the Mercedes window regulators and motors category.

Operational tips and additional knowledge

When performing service work related to body mechanics and electrical systems, it is worth knowing the typical weak points of individual models to better plan your repair budget. A good supplement to your knowledge may be an article describing problematic engines in a popular model from the Bavarian brand – you can find it here: Faulty BMW E90 engines: check what can ruin your budget!.