Mercedes S203 Rear Window Wiper Motor Actuator Electric A2038200542

Mercedes S203 Rear Window Wiper Motor Actuator Electric is an original component from the Wiper motors and linkages group, designed for operation on the rear window in Mercedes vehicles. It provides a stable drive for the wiper arm, which translates into safe visibility in difficult weather conditions and proper compatibility with the vehicle's factory electrical installation.

Specifications and technical data

• SKU: A2038200542
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2038200542
• Substitutable numbers: A2038200542, A 203 820 05 42
• Location on the vehicle: Rear
• Part type: Wiper Motor
• Category: Wiper Linkages, Transmissions & Motors

Purpose and function in the vehicle

The presented rear window wiper motor is designed for installation in the rear body area, where it is responsible for driving the wiper mechanism. The component works with the factory control system, ensuring smooth operation in both intermittent and continuous modes, in accordance with the configuration used in the specific Mercedes model.

Thanks to its proper fit to the tailgate structure and the geometry of the wiper arm, the motor maintains the correct blade operating angle, which reduces streaks and improves the efficiency of window cleaning.

Construction and performance parameters

The rear window wiper motor in this version is a compact electric unit, integrated with a gearbox responsible for transferring torque to the wiper arm axis. The housing is adapted for operation in high-humidity conditions, typical for the rear part of the body, and the mounting design allows for stable bolting to the tailgate panel.

The motor's electrical system is prepared for integration with the Mercedes installation, which facilitates connection to the existing wiring harness without the need for modifications. The appropriately selected gear ratio ensures the correct speed and torque so that the wiper arm moves smoothly and without jerking.

Condition, origin, and benefits of choosing a used part

The offered component is in used condition, which means it comes from vehicle dismantling but retains full operational functionality required for further use. In practice, this allows for obtaining original Mercedes quality at a significantly lower cost compared to a brand-new subassembly.

For users who want to better understand the specifics of selecting and operating secondary market components, especially in the context of electrically driven subassemblies, the following expert guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths. The article explains, among other things, issues of selection by OEM numbers and real cost differences between new and used parts.

Selection and application in service

The rear window wiper motor is a component that should be replaced when symptoms such as the arm stopping in random positions, slowed operation, or a complete lack of response to the switch appear. Using an original Mercedes subassembly minimizes the risk of electrical and mechanical compatibility issues.

When selecting parts, it is crucial to compare the parameters with the vehicle documentation and the existing component, including the location on the vehicle and the type of mechanism used. A properly selected motor allows for trouble-free installation and a quick return to full functionality of the rear wiper.

Repair expansion within the wiper system

If you are planning a comprehensive repair or modernization of the area responsible for wiper operation in your Mercedes and need other elements from the same group, such as additional motors, linkages, or drive elements, check the available parts in the Mercedes wiper motors and linkages category.

Summary

The rear window wiper motor for the Mercedes S203 is a practical solution for drivers who expect efficient rear wiper operation and the preservation of the vehicle's factory functionality. The original design, fitment to the electrical installation, and the possibility of an economical repair of the wiper system make it a reasonable choice when servicing the rear body section in Mercedes vehicles.