What is the reason for the Golf's reverse radar not responding?

[StDavid]

Golf's reverse radar not responding is caused by the poor working performance of the reverse radar control unit itself; it is also caused by abnormal connections of related wiring. The following are relevant introductions: 1. The principle of reverse radar: The reverse radar emits ultrasonic waves through ultrasonic sensors, and after the ultrasonic waves hit an obstacle, they are reflected back and received by the ultrasonic sensors. The controller then calculates the distance between the vehicle and the obstacle based on the time of ultrasonic emission and return, and finally alerts the driver with rapid beeps from the buzzer. 2. The main functions of the reverse radar: Accurately measure the distance between the rear of the vehicle and the nearest obstacle; when reversing to the limit distance, it can emit rapid warning sounds to remind the driver to pay attention to braking; it can repeatedly emit voice warning sounds to remind pedestrians to pay attention.

[LaEmmanuel]

I previously encountered unresponsive reverse radar issues with my Golf as well. It's most likely due to dirty or mud-covered radar sensors. The Golf's sensors are located on the rear bumper and frequent contamination can affect signal transmission. Additionally, check the fuses inside the car - usually in a small box under the driver's seat with codes like F37. If blown, they need replacement. If these are normal, it could be aged/loose wiring or control module failure. I recommend getting it professionally diagnosed immediately to avoid accidents while reversing. Regularly cleaning the sensors during car washes can prevent many such issues.

[JohnLee]

I've encountered issues with the Golf's reversing radar malfunctioning before. Generally, start by checking the simple things first. See if the sensors are blocked or damaged, such as from mud splashes or small stone impacts. Then check the fuse - if it's blown, you'll need to replace it with the correct model. If the fuse is intact, it might be loose wiring connections or a short circuit, or a faulty control relay or sensor module. At this point, using a multimeter to test voltage can provide preliminary judgment. It's best to go to a 4S shop or repair shop for a comprehensive circuit inspection - safety first. Usually pay attention to protecting the rear bumper area to reduce the risk of sensor damage.

[LeilaniFitz]

My Golf's reversing radar suddenly stopped working, most likely due to a sensor issue or a blown fuse. The sensors at the rear of the car are prone to getting dirty, so cleaning them might solve the problem. If that doesn't work, check the fuse box and try replacing the fuse. It could also be an internal wiring fault, which would require a visit to the repair shop. Don't underestimate this issue—having no warning sound while reversing is quite dangerous, especially in dark parking lots. Just address it promptly.