Why Has the Mercedes Blind Spot Assist System Stopped Working?
2 Answers
Mercedes Blind Spot Assist System stops working due to: system function failure, requiring a computer diagnosis at a 4S shop, and generally an upgrade can solve the problem. The Blind Spot Assist System relies on sensors installed at the front and rear of the vehicle to detect whether there are other vehicles approaching within a range of 3 to 15 meters around the vehicle. If there are, a red arrow will appear on the rearview mirror to alert the driver of the danger of changing lanes at this time. Taking the Mercedes E260 as an example, this car is a 4-door, 5-seat sedan with a length, width, and height of 4942mm, 1860mm, and 1455mm respectively, a wheelbase of 2939mm, a top speed of 233 kilometers per hour, a front-engine rear-wheel-drive layout, and a fuel tank capacity of 66L.
Last time my Mercedes also had the blind spot assist system go on strike, which really ticked me off. After consulting an experienced mechanic, I learned that it was most likely because the two radar sensors on the rear bumper were covered in mud or a thick layer of snow. Alternatively, the system might have been throwing a false alarm—turning the engine off and restarting it a few times could fix it. If that doesn’t work, it could be due to loose wiring connections or a blown fuse, especially since short circuits are more common in rainy weather. The worst-case scenario is a faulty sensor, which isn’t cheap to replace. If you notice the system malfunctioning while driving, be extra cautious and check your mirrors more often, and take turns and lane changes slowly. Better head to the dealership for a scan—their diagnostic tool will pinpoint the issue in no time.
