Where to Clean the Dirty Radar Sensor on a Mercedes-Benz?

[LaLillian]

For a dirty radar sensor on a Mercedes-Benz, clean the rear radar probe and the small circular dots on the bumper. Brand Introduction: Mercedes-Benz is a world-class luxury automobile brand, recognized as one of the most premium car brands globally. It is renowned for its perfect technical standards, rigorous quality benchmarks, innovative capabilities, and a series of classic coupe models. Creation History: Mercedes-Benz is a world-famous German automobile brand, founded in 1900 with its headquarters in Stuttgart. The brand was established by Karl Benz and Gottlieb Daimler. Mercedes-Benz is globally known for its high-quality and high-performance automotive products. In addition to premium luxury cars, Mercedes-Benz is also one of the world's most renowned manufacturers of buses and heavy-duty trucks.

[OAaliyah]

Last time I drove my Mercedes-Benz S-Class to the suburbs, the radar sensor alarm went off after rain. I checked and found the front grille was dirty—these sensors are usually located below the emblem and on the rear bumper. I gently wiped the circular sensor areas with a soft cloth, and the issue was instantly resolved. Avoid using hard objects or chemical sprays during cleaning to prevent sensor damage. I've made it a habit to wipe the sensor points every time I wash the car, ensuring the ACC adaptive cruise control and automatic braking function properly. Otherwise, accumulated dust may cause system misjudgments, like unnecessary deceleration on highways, which can be dangerous. Regularly maintaining this small detail enhances driving safety, and I’ve recommended this practice to friends. If unsure about the sensor locations, refer to the user manual or online video demonstrations—never guess. In short, keeping them clean is simple yet highly effective.

[LaStella]

I usually tinker with various automotive electronic gadgets. The Mercedes radar sensors are mostly located in the front grille and rear bumper areas. If they get dirty, it can affect the autonomous driving functions. Like last time when I drove on a dusty road, the blind spot monitoring suddenly stopped working. Where to clean? Just gently wipe the sensor surfaces with a microfiber cloth. Avoid using a wet cloth too frequently, as moisture can damage the core components. After cleaning, the car drives much more steadily, and the system responds faster. My personal suggestion is to check them every two weeks, especially after rainy or snowy seasons. I've also found that cleaning the sensors can extend the equipment's lifespan, saving money and hassle, while keeping the vehicle's smart systems running efficiently.