What are the reasons for the car radar not alarming?
3 Answers
Reasons why the car radar does not alarm: 1. Normal reasons: Obstacle too low: When the obstacle is too low, the reversing radar may not detect the presence of the obstacle; Obstacle too thin: When encountering slender poles, the reversing radar may also fail to detect the obstacle; Reversing radar switch turned off: There is usually a switch on the central control panel inside the car that controls the reversing radar. If it is turned off, the reversing radar will not work. 2. Reasons for malfunction or damage: Reversing radar circuit failure: When the reversing radar circuit is aged or broken, the reversing radar will not function properly; Reversing radar damage: After ruling out the above issues, it is highly likely that components such as the reversing radar, controller, or alarm are damaged.
Having driven for over a decade, I've encountered several situations where car radar fails to alert. For instance, when the rear sensors are covered by mud or frost, completely blocking the radar signal, they stop functioning. Another possibility is a blown fuse, which is easy to check and replace in the fuse box. Poor wiring connections or damage from rodents chewing through wires can also interrupt the signal. Additionally, the radar module itself may have aged or become damaged. My suggestion is to first clean the sensors with a soft cloth, then use a multimeter to check if the battery voltage is normal—around 12 volts is generally acceptable. If you can't resolve the issue yourself, don't delay; take your car to a professional repair shop as soon as possible. Also, remember to clean the sensors thoroughly after washing your car.
Last week, I encountered a sudden loss of sound from the radar. At first, I thought it was broken, but later discovered that the trunk was packed too full, causing the radar sensor to be knocked out of position. Another time, it malfunctioned after heavy rain due to mud and water clogging. This thing is crucial for parking safety – when it doesn't alert, it's easy to scrape against objects. I recommend regularly checking if the sensors are clean and securely fixed. If you've changed to a new car or modified parts, system setting errors might also cause issues. In such cases, try resetting it using the owner's manual. Remember, don't ignore minor faults – address them promptly to prevent accidents and avoid regret.
