Why is the reversing radar of Mercedes-Benz A180 not responding?
2 Answers
The reversing radar of Mercedes-Benz A180 not responding is caused by poor working performance of the reversing radar control unit itself, related connection lines not being connected, or the reversing radar not being turned on. Working principle: When reversing, the reversing radar uses the principle of ultrasound. The probe installed on the rear bumper sends ultrasonic waves that reflect off obstacles, calculates the actual distance between the car body and the obstacle, and then prompts the driver, making parking or reversing easier and safer. Main functions: Accurately measure the distance between the rear of the car and the nearest obstacle. When reversing to the limit distance, it can emit a rapid warning sound to remind the driver to pay attention to braking. It can repeatedly emit a voice warning sound to remind pedestrians to pay attention.
Last time, the reverse radar on my Mercedes-Benz A180 suddenly stopped working, which really scared me! There was no sound alert at all when reversing, and I was worried about hitting something. First, I checked those small round sensors on the rear bumper and found they were completely clogged with mud and dirt—probably from driving on muddy roads a few days earlier. After simply rinsing them with water, the radar immediately started working again. It could also be a fuse issue; the reverse radar fuse for the Mercedes-Benz A180 is located in the fuse box in the engine compartment—check the one in position F to see if it’s blown. If cleaning the sensors and checking the fuse don’t help, it might be a loose wire or a control module failure, especially in areas with heavy rain where connections can corrode. Don’t try to fix it yourself; take it to a professional shop to diagnose with a Mercedes scanner to avoid causing more damage by mistake. After parking, wiping the sensors with a soft cloth can prevent 90% of such weird issues.
