Mercedes W205 Windscreen Rain Sensor Front Control Unit A2059006615

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W205 Windscreen Rain Sensor Front Control Unit is a component from the Electronic control modules and controllers group, responsible for the automatic response of the wiper system to precipitation on the windshield. Thanks to precise moisture measurement on the glass, it improves driving comfort, increases safety, and relieves the driver in changing weather conditions. This solution is designed specifically for Mercedes W205 class models, maintaining factory standards for integration with the vehicle's electrical system.

Specifications and technical data

• SKU: A2059006615
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2059006615
• Substitutable numbers: A2059006615, A 205 900 66 15
• Location on the vehicle: Front
• Category: ECUs & Computer Modules

Function and application of the rain sensor in the Mercedes W205

The presented rain sensor operates in the front part of the vehicle, in the immediate vicinity of the windshield. As a specialized electronic module, it analyzes the amount of droplets on the glass surface and transmits a signal to the wiper controller, which selects the operating frequency of the wiper arms. This allows for:

• automatic activation of wipers when precipitation appears,
• adjustment of operating speed to the intensity of the rain,
• maintaining good visibility without the need for manual adjustment.

In Mercedes W205 vehicles, such a module is an essential element of the comfort and safety system, working in conjunction with other body controllers.

Benefits of using an original electronic module

As a part from the Electronic control modules and controllers group, the rain sensor must be precisely matched to the car's electrical architecture. Using an original solution dedicated to Mercedes ensures:

• proper communication with the vehicle bus and body controllers,
• stable operation of automatic wiper functions in various conditions,
• preservation of factory operating parameters of the comfort system.

The element mounted in the front zone of the vehicle is exposed to temperature changes and vibrations, which is why the module's construction has been prepared for long-term operation in real road conditions.

Characteristics and installation in the front zone

The rain sensor in the Mercedes W205 works with the windshield and wiper arms, so its placement at the front of the vehicle is crucial for the accuracy of the readings. When replacing it, it is important to:

• maintain the correct position of the module relative to the glass surface,
• properly connect it to the vehicle's electrical installation,
• perform any necessary adaptation in the car's electronic system, if required by the specific unit.

By using a dedicated sensor for the W205 series, you minimize the risk of communication errors and improper operation of the automatic wipers.

Product condition and practical application

The offered rain sensor is a used component, which in the case of electronic modules allows for combining an attractive cost with the preservation of the factory design. This solution is particularly beneficial for post-accident repairs, replacing a damaged module after a windshield replacement, or when diagnosing faults related to improper wiper operation in automatic mode. By choosing such a component, you can restore full system functionality without the need to interfere with the wiring harness or change the equipment configuration.

If you are planning a comprehensive repair or upgrade of the body electronics area in your Mercedes and need other elements from the same group, such as comfort controllers, body modules, or other systems managing vehicle functions, check the available parts in the Mercedes electronic control modules and controllers category.

For a better understanding of how modern electronic modules work and how to diagnose and replace them using dismantled parts, it is worth reading the guide on control systems in premium class vehicles: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using dismantled parts?