Why does the Mercedes-Benz E300L suddenly brake by itself?
2 Answers
The reason why the Mercedes-Benz E300L suddenly brakes by itself is that the vehicle is equipped with an active braking function. Under normal driving conditions without adaptive cruise control, if the vehicle encounters a sudden dangerous situation, it can autonomously generate a braking effect to slow down the vehicle, thereby improving driving safety. This system uses sensors at the front of the vehicle to detect the distance between the vehicle and obstacles ahead. The Mercedes-Benz automatic braking system will activate when a collision is imminent or when there is an obstacle ahead but the driver does not react. Taking the Mercedes-Benz E-Class 2021 E300L Fashion model as an example, its body dimensions are 5078mm in length, 1860mm in width, and 1484mm in height, with a wheelbase of 3079mm.
My car is also a Mercedes-Benz E-Class. Once, while driving on the road, it suddenly braked hard on its own, which almost gave me a fright. Afterward, I thought about it for a long time and realized that the Mercedes is equipped with an automatic emergency braking system, and the sensors might have malfunctioned. If those cameras or radars mistakenly identify an obstacle ahead, such as reflections on the ground or a bird flying by, the car will automatically brake to save lives. It could also be that the sensors were covered by mud or snow, making it hard to see clearly, and misjudgments are more likely to happen when there are large splashes of water on the road during rainy days. This system is called PRE-SAFE Brake, and its original intention is to help us avoid collisions. However, if the system isn’t properly calibrated or the software isn’t updated, it might react on its own inappropriately. If you encounter this situation, don’t panic. Try turning off the safety assist features to see if it still happens. If the problem persists, take it to the 4S shop to check if the sensors are clean and if the software is up to date. Don’t delay, as it could lead to serious consequences.
