What causes false alarms in the Regal GS radar?
3 Answers
There are generally three reasons for false alarms in the Regal GS radar: foreign objects covering the radar's sensing position, blind spots between radars, and radar malfunctions. Brief description of the reasons: Tape, bird droppings, chewing gum, etc., may cover the circular sensor of the parking radar, preventing it from functioning properly. The area directly between two radars may be an undetectable position, and the four corners of the car are natural blind spots for the radar. Whether it's a faulty sensor, wiring issue, or display problem, it's necessary to promptly visit a 4S shop or repair shop for testing, module refreshing, or component inspection. Reasons for parking radar failure during rainy days: When washing the car or during rain, the radar may emit a continuous beep or display a relatively fixed distance. This happens because when water accumulates on the probe's surface, the probe's opening angle (ultrasonic emission angle) increases. If installed too low, it may detect the ground or objects on the car like the license plate, causing false alarms. The detection distance becomes very short, which is a normal phenomenon due to the design of certain probes, as water can affect the probe's emission energy.
I've got experience with the false alarms on the Regal GS radar. There are quite a few common causes. Dirty sensors are the main culprit—after rain, dust and mud spots can block the surface, causing signals to jump around and mistakenly detect obstacles. Wiring issues are another problem, like loose connectors or aging wear leading to short circuits, which can cause unstable current and system errors. Software glitches are also inevitable; delayed updates or system bugs can make the radar misjudge distances. Environmental factors like heavy rain, fog, or intense sunlight can interfere with detection accuracy due to light and water droplet interference. Post-modification issues should also be considered—improperly installed radar or modified wiring might conflict with the original system. It’s really annoying when the alarm suddenly goes off while parking. It’s best to take it to a 4S shop for a full check-up, timely cleaning, and upgrades.
I've driven the Regal GS in our car club, and false radar alerts often stem from overlooked details in daily use. High-pressure water jets directly hitting sensors during car washes can leave water stains that distort signals; small stones or leaves blocking air intakes or around antennas can cause detection failures. Electrical issues like blown fuses or poor relay contacts are potential hazards. During extreme temperature fluctuations, thermal expansion and contraction may displace components, affecting accuracy. Additionally, mud buildup after long drives or loose wiring on bumpy roads can trigger false alarms. When battery voltage is low, system instability increases false alerts. I recommend developing good habits: regularly clean radar probes with soft cloths, park on level ground to avoid impacts. Don't delay addressing issues—safety first—getting professional diagnostics at a shop saves time and effort.
