Mercedes ML GL W164 X164 Rear Tailgate Window Wiper Motor Unit A2518200042

Mercedes ML GL W164 X164 Rear Tailgate Window Wiper Motor Unit is an original component from the Wiper motors and linkages group, designed for operation on the vehicle's rear window. It provides a stable drive for the wiper arm, which translates into safe visibility in difficult weather conditions. This is a solution for users who are looking for a proven, factory-made component instead of random replacements.

Specifications and technical data

• SKU: A2518200042
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2518200042
• Substitutable numbers: A2518200042, A 251 820 00 42, 53023112
• Location on the vehicle: Rear
• Category: Wiper Linkages, Transmissions & Motors

Purpose and function in the vehicle

The presented motor is dedicated to operation on the rear window, responsible for the smooth movement of the wiper arm on the horizontal axis. Its task is to:

• ensure uniform wiper operation across the full range of the stroke,
• maintain the appropriate speed and torque under various load conditions,
• cooperate with the factory Mercedes vehicle control system.

Thanks to the proper fit for the SUV body, the motor stably transfers the loads resulting from the wiper's operation across the large surface of the rear window.

Construction and fitment to the wiper system

The rear wiper motor in this model has been designed as a component that works with the factory arm mechanism and the Mercedes electrical installation. The design provides for:

• an integrated housing protecting the electrical part and the gearbox,
• adaptation for mounting in the original mounting points in the tailgate,
• compatibility with the vehicle's standard electrical connector.

Such a solution facilitates installation and allows for maintaining the factory wiper operation geometry, without the need for modifications or fitting universal elements.

Benefits of using an original motor

Using an original rear wiper motor in a Mercedes ML or GL W164 / X164 series brings measurable technical benefits:

• Stable operation under operating conditions – a component designed for a specific body and wiper arm weight.
• Full cooperation with factory controls – maintaining the operating modes and intermittent cycles provided by the manufacturer.
• Reduction of the risk of electrical system overloads – properly selected current parameters and torque.
• Better durability compared to random replacements with uncertain parameters.

For the user, this means predictable wiper system operation and a lower risk of needing further service intervention in the short term.

Condition, verification, and practical application

The offered item is used, which allows for combining reasonable cost with maintaining the original manufacturer's specifications. This type of component is particularly useful for:

• repairing a faulty rear wiper (no movement, jamming, irregular operation),
• restoring full vehicle functionality after mechanical damage to the tailgate,
• servicing the wiper system in intensively used vehicles.

It is always worth confirming the selection of the correct motor based on the part number and the configuration of the specific car to ensure full installation compatibility.

Expanding the wiper system in a Mercedes

If you are planning a comprehensive repair or upgrade of the rear window area in your Mercedes and need other elements from the same group, such as drives, gearboxes, or wiper linkages, check the available parts in the Mercedes wiper motors and linkages category.

For larger service work, it is also worth planning a comprehensive supply of components. How to effectively complete used elements – from main subassemblies to small accessories – is explained in the article Comprehensive supply: from the engine to the smallest clip, which shows the advantages of a One-Stop-Shop approach.

Service knowledge and prevention

When working with drive systems in premium class vehicles, it is worth knowing the typical weak points of power units and accessories to better plan service. A good supplement to your knowledge may be a guide on problematic engines in popular models, e.g., Emergency BMW E90 engines: check what can ruin your budget, which shows how a conscious approach to operation and repairs allows for cost reduction in other brands as well.