Mercedes-Benz CLC-Class CL203 Front Right Door O/S Window Electric Lifter Motor

MERCEDES CL203 Front Window Regulator Mechanism is a component from the Window Regulators and Motors category, designed for the front passenger side window. It's a practical solution for users who want to restore the proper functioning of the electric window lift while maintaining the original Mercedes design concept.

Specifications and technical data

• SKU: A2037204046
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2037204046
• Substitutable numbers: A 2037204046, A 203 720 40 46, A2037203846, A 203 720 38 46, AS
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Vehicle Application and Placement

The mechanism is designed for installation on the front right side of the body in Mercedes CL203 models. It is responsible for precise window guidance in the tracks and cooperation with the motor controlling its movement. Its dedicated placement ensures correct window operation geometry and stable closing without excessive play.

Technical and Functional Characteristics

As part of the window lift system, the mechanism works with the vehicle's original electrical system and the factory door switch. The design is intended for typical load conditions for front doors, ensuring smooth up and down window movement. The appropriately selected gear ratio provides:

• stable window guidance throughout the entire opening height,
• controlled, uniform movement without jerking,
• compatibility with factory comfort functions (if present in the specific vehicle).

By maintaining the original installation concept, the mechanism allows for the restoration of factory operating parameters for the passenger side window.

Condition, Origin, and Benefits of Choosing a Used Mechanism

The offered component comes from the group of used Mercedes parts, allowing for a reasonable repair cost while preserving the original construction. In practice, this means:

• maintaining compatibility with factory mounting points in the door,
• no need for electrical system modifications,
• easier part selection based on OEM numbers and interchangeable numbers (visible in the specifications).

If you are also considering purchasing other used components, it is worth reading our expert guide explaining how to safely choose used drivetrain components – you can find it here: Why Buy Used Gearboxes and Engines – Facts Instead of Myths. The selection procedures based on OEM numbers presented there clearly illustrate the approach that can also be applied when choosing accessory components, such as window regulators.

Installation and Service Aspects

The CL203 window lift mechanism is designed for installation in place of the original component, using the factory mounting points in the door. When replacing, it is recommended to:

• check the condition of the window tracks and door seals,
• verify the correct operation of the control switch,
• inspect the electrical wiring harness in the door for wear and kinks.

This approach helps avoid repeated upholstery removal and ensures longer, stable operation of the entire window lift system.

Mercedes Window Regulators and Motors – Selecting the Right Components

If you are also looking for other Mercedes Window Regulators and Motors compatible with your model, visit our dedicated subpage: Mercedes Window Regulators and Motors. You will find a wide selection of window regulators and drives there, making it easier to choose the right component for your specific body version and equipment.

Summary

The MERCEDES CL203 Front Window Regulator Mechanism is a practical solution for drivers who want to restore the proper functioning of the front right window while maintaining the original system design. Its proper fit for the CL203 body, compliance with the Window Regulators and Motors category, and the ability to identify it by OEM and interchangeable numbers (in the specifications) make it a functional choice for repairing the window lift system in a Mercedes.