Mercedes-Benz E-Class W207 Windscreen Windshield Rain Sensor Control Unit

The Mercedes W207 Rain Sensor is a component from the Electronic Control Modules and Controllers category, responsible for the automatic response of the wiper system to precipitation. Precise measurement of moisture on the windshield translates to driver comfort, improved safety, and stable operation of comfort systems in Mercedes vehicles. This is a solution for users who expect efficient operation of automatic functions without the need for manual wiper adjustment.

Specifications and technical data

• SKU: A2079013700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2079013700
• Substitutable numbers: A2079013700, A 207 901 37 00, BG
• Location on the vehicle: Rear
• Category: ECUs & Computer Modules

Function and Application of the Mercedes W207 Rain Sensor

The Mercedes W207 Rain Sensor works with the vehicle's electronic system, analyzing the amount of water on the windshield and sending a signal to the wiper controller. This allows the speed and frequency of the wipers to be adjusted to current weather conditions, minimizing the need for driver intervention.

The placement indicated as rear means the module is designed to work with the rear windshield, supporting comfortable and predictable operation of the rear wiper. This solution is particularly useful when driving in rain, fog, or on wet surfaces, where dirt quickly accumulates on the rear window.

Benefits of Using an Original Control Module

As a component within the Electronic Control Modules and Controllers group, the rain sensor is responsible for correct communication with the vehicle's electrical system. Using the appropriate module ensures:

• stable cooperation with the factory Mercedes electronics,
• correct response of the wiper system to changing conditions,
• preservation of comfort functions intended by the manufacturer,
• reduction of the risk of errors in onboard systems.

For the user, this means predictable operation of automatic wipers and no need for additional adaptation of non-original solutions.

Product Characteristics and Installation

The offered sensor belongs to the Mercedes brand, which helps maintain consistency with the vehicle's factory electrical architecture. The item is classified as used, allowing for the functionality of an original module to be combined with a more favorable purchase cost compared to new components.

When selecting and installing, it is worth paying attention to:

• compatibility with the W207 body generation,
• designation for the rear part of the vehicle,
• correct seating in the mounting location and proper connection to the wiring harness.

Professional installation allows for full utilization of the module's capabilities and avoids communication problems within the vehicle's electronic network.

Mercedes Electronic Control Modules and Controllers – Selection and System Expansion

If you are looking for other Mercedes Electronic Control Modules and Controllers tailored to your car, check out our dedicated category: Mercedes Electronic Control Modules and Controllers. This will help you more easily build a cohesive set of components that will work with the vehicle's electrical system according to the manufacturer's specifications.

Used Modules and Maintaining Brand Character

Choosing a used rain sensor aligns well with the strategy of maintaining the vehicle's original characteristics at a reasonable service cost. It is worth noting that owners of other premium brands also adopt a similar approach – you can find more about the role of original, used parts in preserving the factory character of a car in the article: Audi and Pure Emotion – How Used Parts Help Maintain Brand DNA.

Summary

The Mercedes W207 Rain Sensor is a practical comfort system component, belonging to the group of electronic control modules and controllers, designed for operation in the rear part of the vehicle. It ensures automatic wiper response to precipitation, improving visibility and driving comfort. For drivers who value the efficient operation of support systems, it is a sensible way to maintain the vehicle's functionality according to the manufacturer's intentions.