What is the reason for the malfunction of the Emgrand reverse radar system?
2 Answers
The malfunction of the Emgrand reverse radar system is caused by poor power supply or grounding circuit. Function: The full name of the reverse radar is "Reverse Anti-collision Radar," also known as "Parking Assistance Device." It is a safety auxiliary device for parking or reversing, consisting of ultrasonic sensors, a controller, and a display. When reversing, it helps the driver "see" objects that are not visible in the rearview mirror, alerting the driver about surrounding obstacles through sound or a more intuitive display. It alleviates the difficulties caused by the driver's need to look around when parking, reversing, or starting the vehicle, and helps eliminate blind spots and unclear vision, thereby improving driving safety. Blind Spots: The reverse radar also has certain blind spots, including obstacles that are too low (below 10~15cm from the center of the sensor), too thin (such as isolation posts or diagonal steel cables), and ditches.
Last time when I was driving my brother's Emgrand, the reverse radar suddenly malfunctioned. The car kept beeping erratically or not responding at all, which scared me into pulling over immediately. Common causes include dirty radar sensors (not wiped clean after washing or blocked by mud), leading to inaccurate detection. Other issues could be aged wiring, loose connectors causing short circuits due to rainwater seepage, or blown fuses often triggered by voltage fluctuations. I suggest first checking and gently wiping the sensor surfaces with a soft cloth. If that doesn’t help, inspect the relevant fuse in the fuse box. During regular maintenance, have technicians test the system voltage to prevent such minor faults from compromising safety. Never delay repairs—visit a professional shop to check circuits and modules promptly.
