Why Doesn't the Parking Sensor Beep?

1 Answers
FinleyMarie
07/30/25 9:39am
The reasons why the parking sensor doesn't beep may include: loose connection of the radar main unit wiring; damaged buzzer; or damaged wiring at the bumper. Here are the details: 1. Loose connection of the radar main unit wiring: First, check whether the power cord of the main unit is properly connected and whether there is current; then check if the radar main unit wiring is loose. If neither of these is the issue, the problem may lie with the radar itself. 2. Damaged buzzer: If the problem is confirmed to be with the parking sensor, the first possibility to consider is a damaged buzzer. In this case, you need to purchase and install a new buzzer. Additionally, recall whether your car has undergone any recent modifications. If so, the wiring of the parking sensor might have been damaged during the modification process, requiring you to take the car to the original workshop or a 4S store for inspection. 3. Damaged wiring at the bumper: When you find that the parking sensor doesn't beep, you can also check whether the wiring connection at the bumper is intact, then check whether the reverse light is on when shifting into reverse gear. If it doesn't light up, check whether the connection switch of the reverse light is broken. Then, you can check whether the computer displays any fault codes. If none of these issues are present, proceed to check whether the parking sensor itself is malfunctioning.
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