Mercedes CLA C117 WIndow Lifter Rear Left N/S Regulator Motor A1177302500

The Rear Left Window Regulator with Motor for Mercedes CLA C117 is an original part from the Window Regulators and Motors category, designed for installation on the rear left side of the body. It ensures stable operation of the window lifting mechanism, maintaining factory operating parameters and compatibility with the vehicle's electrical system.

Specifications and technical data

• SKU: A1177302500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1177302500
• Substitutable numbers: A1177302500, A 117 730 25 00, A 117 730 01 79, A1177300179
• Location on the vehicle: Rear, Left
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Application and Purpose

This Window Regulator with Motor for Mercedes CLA C117 is intended for installation on the rear left side of the vehicle. The component works with the factory window control system, ensuring smooth opening and closing of the side window, as well as proper cooperation with comfort modules and anti-pinch protection, if present in the specific car configuration.

The placement on the vehicle is precisely defined as rear – left side, which facilitates the selection of the correct component when replacing a damaged mechanism or during post-accident repairs.

Construction and Technical Characteristics

The window regulator for CLA C117 is a complete assembly of an integrated window guide mechanism with an electric motor. The construction is prepared to work with factory mounting points in the door, which allows for maintaining the correct window guide geometry and reduces the risk of jamming.

• Factory Fitment – the regulator and motor are designed for the specific CLA C117 body platform, which translates to proper alignment with the door and window.
• Stable Mechanism Operation – the assembly is designed for repeated cycles of raising and lowering the window, maintaining consistent movement speed.
• Integration with Electrical System – the motor works with original wiring harnesses and control units, without the need for installation modifications.

Condition, Origin, and Benefits of Installation

The offered window regulator with motor for CLA C117 is a used part, sourced from dismantling. This makes it a cost-effective solution compared to new parts, while maintaining original manufacturer specifications. For many Mercedes users, this is a sensible way to restore full window functionality after a mechanism or motor failure.

Choosing an original regulator with motor allows for:

• maintaining factory window operation quality – proper speed and smoothness of movement, without jerking,
• reducing fitting issues – no need for modifications to mountings or guides,
• consistency with comfort systems – correct cooperation with control buttons and comfort closing functions, if present in the vehicle.

Part Selection and Compatibility

When selecting this window regulator with motor, it is crucial to ensure it matches the Mercedes CLA C117 model and the correct side of the body. The product has a dedicated OEM part number and related interchangeable numbers, which facilitates verification of compatibility with a specific equipment version. If in doubt, it is advisable to compare the markings with the currently installed part or consult the manufacturer's catalog.

If you are looking for other Mercedes Window Regulators and Motors, check out the Mercedes Window Regulators and Motors available in our assortment to select a component that fits other models of this brand.

Technical Knowledge and Operation

A functional window regulator with motor has a direct impact on vehicle comfort and safety – especially in emergency situations where quick opening or closing of the window is necessary. In case of symptoms such as slow operation, the window stopping halfway, or unusual noises from inside the door, diagnostics of the mechanism and, if necessary, its replacement are recommended.

If you are interested in broader issues related to the durability of components and repair costs in premium cars, it is worth reading the article on our blog: BMW E90 Faulty Engines: Find Out What Can Ruin Your Budget!. This will help you better assess when it is worthwhile to opt for used parts and when to consider other solutions.