What Could Be the Reasons for a Car Radar Not Alerting?
2 Answers
There may be several reasons why a car radar does not alert: 1. Loose Radar Host Wiring: If the reversing radar is not working, first check whether the power cord of the host is properly connected and whether there is current. Then, check if the radar host wiring has become loose. If neither of these is the issue, the problem may lie with the radar itself. 2. Damaged Buzzer: If the issue is confirmed to be with the reversing radar, the first possibility to consider is a damaged buzzer. In this case, you will need to purchase a new buzzer and install it. Additionally, recall whether your vehicle has undergone any recent modifications. If so, it is possible that the reversing radar wiring was damaged during the modification process. In such a scenario, the car should be taken to the original workshop or a 4S store for inspection. 3. Damaged Wiring at the Bumper: When the reversing radar is not working, you can also check whether the wiring connections at the bumper are intact. Then, check if the reversing light turns on when the reverse gear is engaged. If it does not, inspect whether the reversing light connection switch is faulty. You can also check if the computer displays any fault codes. If none of these issues are present, proceed to check whether the reversing radar itself is malfunctioning.
My car's radar wasn't alerting me before, and after thinking about it for a long time, I realized there could be several reasons. If the radar sensor is covered by mud or ice, it can't receive signals, which often happens when driving in the rain. Another possibility is accidentally turning off the radar function in the vehicle settings—some cars allow you to toggle this feature on the central control screen. Aging wiring can also cause poor contact, especially in cars that are five or six years old. Additionally, if you've hit a curb while reversing, the sensor inside might have been damaged. I recommend first asking the car wash attendant to rinse the radar area when you get your car washed, then check the settings menu. If that doesn't work, you should take it to a repair shop to scan for fault codes with a computer.
