
The reversing radar buzzer is installed near the steering wheel. In most cases, it is located on the lower side of the dashboard or the left side of the center console. The principle is that it should not affect driving or aesthetics. The reversing radar system consists of several components, including the main unit, display, sensors, and buzzer. The sensors must be installed on the front and rear bumpers of the vehicle to better monitor parking distances. Additional relevant information is as follows: 1. Introduction: The full name of the reversing radar is the reversing collision avoidance radar, also known as the parking assistance device. It is a safety assistance device used when parking or reversing a car, composed of ultrasonic sensors (commonly known as probes), controllers, and displays (or buzzers). It informs the driver of surrounding obstacles through sound or a more intuitive display, eliminating the hassle of checking front, rear, top, and bottom when parking, reversing, or starting the vehicle. It also helps the driver overcome blind spots and unclear vision, thereby improving driving safety. 2. Principle: The reversing radar is designed based on the principle that bats fly at high speeds in the dark without colliding with any obstacles. The sensors are mounted on the rear bumper. They can radiate within a maximum horizontal range of 120 degrees and a vertical range of 70 degrees, searching for targets in all directions. Its greatest advantage is the ability to detect obstacles that are lower than the bumper and difficult for the driver to see from the rear window, such as flower beds, curbs, or children playing behind the car, and then alert the driver.

I drive a Skoda Superb, and I once found the reverse parking sensor buzzer in the trunk when replacing the brake light. It's specifically located behind the left interior trim panel in the trunk, near the taillight. You'll need to pry open the clips on the trim panel to see it—it's a small, square-shaped box connected to a few wiring harnesses. It beeps when the car is in reverse gear, and previously, my sensor's false alarms were caused by poor contact here. Actually, most German cars prefer placing the buzzer in the trunk, mainly because it's close to the radar sensors, making wiring easier. If the car has been rear-ended, this area is most prone to issues, so I recommend avoiding high-pressure water jets in this spot during car washes. If you don’t hear the beeping, first check if the connector on the box is loose. If you can’t locate it, have a friend shift into reverse while you’re inside the trunk—the sound is quite noticeable.

My friend at the service station told me that the Superb's reverse parking warning buzzer is usually installed behind the trunk side panel lining, at the junction between the cabin and luggage compartment. This design is quite concealed yet reasonable - it allows the driver to hear the warning tone clearly without occupying passenger space. Last time when helping a fellow car owner troubleshoot a radar issue, we used a diagnostic scanner to read system signals and finally identified the problem as poor contact due to oxidized buzzer connector. It's worth noting that special attention should be paid to the clip removal techniques when DIY disassembling interior panels, as plastic parts on older cars tend to be brittle. This layout is quite common among Volkswagen Group models - Passat and Magotan also have similarly positioned buzzers. When the warning tone becomes distorted or irregular, it's often an early sign of impending buzzer failure.


