Why does the reverse gear radar keep beeping when there are no obstacles?

[ClaytonDella]

Generally, there are several possible reasons: dirty reverse radar sensors; a short circuit in the reverse radar alarm; or a malfunction in the reverse radar sensors or controller. Below are the relevant explanations: 1. Blind spots: The reverse radar is a warning device designed to avoid rear obstacles and prevent collisions. For many drivers, the reverse radar can indeed provide some assistance during reversing. However, reverse radars installed in some mid- to low-end cars, especially those given as freebies by dealers, often have certain blind spots in their detection range. 2. Installation position: Due to the placement of the radar probes, the reverse radar may fail when obstacles behind the car are too low, too high, or at an angle beyond the probe's detection range. For example, low obstacles like sidewalk curbs or large rocks, or high obstacles like tall box trucks, may fall outside the reverse radar's detection range. Additionally, the reverse radar is ineffective against very thin obstacles. It's also important to be aware of obstacles above the rear of the car, as overhead obstacles are not within the reverse radar's 'jurisdiction.'