What to Do If the Reversing Radar Malfunctions?
3 Answers
Solutions for a malfunctioning reversing radar: 1. Check whether the power cord of the main unit is properly connected and if there is current; 2. Inspect if the radar main unit wiring has become loose. If neither of these is the issue, then the reversing radar module or buzzer may be damaged and needs replacement. The full name of the reversing radar is the reversing anti-collision radar, also known as the parking assistance device. It is a safety aid for parking or reversing, composed of ultrasonic sensors, a controller, and a display, among other components. The reversing radar has significant blind spots when detecting thinner obstacles, such as road barriers used to separate vehicles and the diagonal steel cables on utility poles, which can be hazardous.
I felt particularly frustrated when I encountered a malfunctioning reverse radar before. Simply put, the first step is to manually check if the sensors are covered by dirt or debris, especially the probes near the wheels. Clean them thoroughly and try again. If that doesn’t work, check the fuse box, usually located in the rear or engine compartment, and replace the reverse radar fuse if it’s blown. If the issue persists, it’s likely due to loose wiring or a faulty control module. In this case, never compromise—safety comes first. Take it to a professional repair shop for a detailed diagnosis with a computer scanner. Replacing a damaged sensor might cost a few hundred yuan, while module issues could be more expensive. Without the radar’s warning, rely more on rearview mirrors and turning your head to check, moving the car slowly. When washing the car, avoid spraying water directly at the sensors to prevent damage.
In my experience, issues with the parking radar are often caused by sensor malfunctions or wiring short circuits. You can try some initial troubleshooting yourself: first, wipe the probe surface with a damp cloth to remove dirt and ensure it's clean; then check if the fuse is blown—it's usually located under the glove compartment or on the inner wall of the trunk, and replacing it costs just a few bucks. If these steps don’t work, it’s best to use a multimeter to test the circuit continuity and check for any breaks. A more complex issue could be a faulty module, in which case it’s more reliable to have a professional mechanic diagnose it at a repair shop. After the parking radar fails, drive with extra caution and frequently check your surroundings to avoid collisions. For prevention, avoid reversing into deep water areas and have the radar system inspected by a technician during regular maintenance to extend its lifespan.
