BMW F20 F21 F22 F23 F30 Rain Light Sensor Windscreen Wiper 9475146

BMW F20 F21 F22 F23 F30 Rain Light Sensor Windscreen Wiper is an original comfort system component responsible for the automatic operation of the windscreen wipers. Thanks to precise moisture measurement on the glass, it ensures efficient adjustment of wiping frequency to current weather conditions, improving visibility and driving safety. This solution is particularly valued in everyday use, especially during variable precipitation.

Specifications and technical data

• SKU: 9475146
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9475146
• Substitutable numbers: 9475146, 61359475146, 7939168, 61357939168, 6823540, 61356823540, 9496241, 61359496241, 6806740, 61356806740, 9397908, 61359397908, 9861557, 61359861557, 6801263, 61356801263, 6819589, 61356819589, 9388380, 61359388380
• Location on the vehicle: Front
• Category: Other Starters, Alternators, ECUs & Wiring

Function and application of the BMW rain sensor

The presented rain sensor is designed for installation in the front part of the vehicle, in the windscreen area. It works with the wiper control module, analyzing the amount of water on the glass surface and sending a signal to the control system. As a result, the driver gains automatic wiper operation adjustment without the need for manual mode changes, which reduces distraction while driving.

This element is particularly important in vehicles equipped with advanced comfort systems, where smooth wiper operation affects the effectiveness of other functions, such as driver assistance systems or assistants for driving in difficult weather conditions.

Compatibility and part identification

The sensor has been designed for selected BMW F-series models, such as the F20, F21, F22, F23, and F30, which ensures proper fitment to the windscreen structure and mounting bracket. Proper identification by OEM part number and available replacement numbers allows for selecting the correct element for a specific vehicle configuration, minimizing the risk of installation issues.

It is worth noting that this is a part from the group of original BMW components, which translates into compatibility with the factory electrical installation and correct cooperation with the vehicle's existing software. Thanks to this, after replacing the sensor, it is possible to maintain the full functionality of the automatic wiper mode.

Characteristics of installation in the front zone of the vehicle

The placement of the sensor in the front part of the car requires maintaining proper cleanliness and transparency of the glass in the area where it operates. A correctly installed element should adhere tightly to the glass to ensure a reliable moisture level reading. In practice, this means the necessity of using appropriate mounting materials (e.g., a suitable optical pad), in accordance with BMW service procedures.

Due to the specifics of its operation, the rain sensor is an element that directly affects driving comfort and safety in rain, fog, or when driving on wet surfaces. A functional component allows avoiding delays in wiper reaction, which is especially important at higher speeds.

Part condition and benefits of choosing a used component

The offered rain sensor is a used element, sourced from dismantling, which constitutes an attractive alternative to new service parts. In the case of body electronics, such as rain sensors, original used components often retain full functionality, while at the same time allowing for a significant reduction in the cost of vehicle repair or modernization.

For BMW owners who want to better understand the advantages of using original parts from the secondary market, the following guide material may be helpful: Used parts for BMW – is it worth it? Key benefits for brand fans. The article discusses, among other things, issues of cost-effectiveness, quality, and ecological aspects related to the reuse of components.

Knowledge expansion and related technical content

If you are interested in a broader context of how advanced systems work in premium class cars, including differences in the construction of powertrains, brakes, and chassis, it is worth reading the material: Audi RS vs other models – what is hidden under the hood and chassis?. It allows for a better understanding of how manufacturers design the cooperation of body electronics with other vehicle systems.

If you are planning a comprehensive repair or modernization of the body zone and comfort electronics in your BMW and need other elements from the same group, such as sensors, control modules, or wiring harnesses, check the available parts in the Other BMW category.