Mercedes R231 Rear Window Motor Regulator Triangle Left N/S A2316700103

Mercedes R231 Rear Window Motor Regulator Triangle Left N/S is an original component from the Doors and door panels group, designed for precise operation of the rear window on the driver's side. This used component ensures a factory-fit to the bodywork, maintaining the correct operating geometry of the mechanism and stable window guidance during daily use.

Specifications and technical data

• SKU: A2316700103
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2316700103
• Substitutable numbers: A2316700103, A 231 670 01 03
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and vehicle placement

The window regulator is designed for installation in the rear part of the body, on the left side of the vehicle. It is responsible for the controlled raising and lowering of the window, which is important for both passenger comfort and the sealing and rigidity of the side body structure.

Precise placement in the rear door area on the driver's side allows for proper window operation throughout the entire range of motion, reducing the risk of jamming, misalignment, or excessive play in the guides.

Benefits of using an original window regulator

Using an original rear window regulator in Mercedes R231 series models helps maintain the structural integrity of the body and ensures proper compatibility with other door components. Key advantages include:

• factory fit to the door structure and window guides,
• stable operation of the mechanism throughout the full opening and closing range,
• reduction of vibrations and unwanted noises while driving,
• maintaining the correct position of the window relative to the seals and door frame.

As a result, the regulator supports the maintenance of proper acoustic and aerodynamic sealing, which is significant at higher speeds and in daily use.

Characteristics of the used component

The offered window regulator is a used part, sourced from dismantling, which allows for an economical repair while maintaining the manufacturer's original specifications. This type of component is particularly beneficial for post-accident repairs or replacing a worn-out mechanism when compatibility with the factory door structure is a priority.

Choosing a used OEM component reduces the risk of installation issues typical of aftermarket replacements, such as incorrect mounting points or differences in guide geometry, which translates into easier installation and stable operation.

Application in the Mercedes body system

The rear window regulator works in conjunction with other door components, such as the outer panel, internal reinforcements, seals, and window fittings. A correctly selected element allows for maintaining the side line of the body and proper window adhesion to the seals, which contributes to protecting the interior from water and contaminants.

In Mercedes R231 series vehicles, the proper operation of the window regulator mechanism is also important for cabin acoustic comfort and the durability of other door elements that are exposed to loads resulting from window movement.

If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other elements from the same group, such as panels, reinforcements, or door frames, check the available parts in the Mercedes Doors and door panels category.

Additional technical and operational information

When replacing the rear window regulator, it is recommended to check the condition of the guides, window mounts, and seals within the door area to avoid repeated disassembly and to ensure the smooth operation of the entire system. Proper installation, while maintaining tightening torques and adjustment positions, has a direct impact on the durability of the mechanism and user comfort.

If you are interested in a broader context of Mercedes vehicle maintenance and the selection of appropriate service components, it is worth reading the guide on equipment and component durability in popular models, available in the article Reliability under the star sign – how to take care of engine equipment in popular Mercedes-Benz C and E-Class models?.