What does it mean when the car displays a radar system malfunction?
2 Answers
Here are the reasons for automotive radar system malfunctions: 1. No alarm from the reverse radar system: The symptom is that there is no response from the reverse radar system when shifting into reverse gear or pressing the radar switch. The diagnosis is that the working power ground circuit of the reverse radar system is not functioning. 2. Reverse radar system not activated: A common cause is that the parking assist conditions are not met, meaning the vehicle is in parking mode or trailer mode, requiring replacement of the reverse radar or reactivation. 3. Radar system indicates malfunction: The symptom is that the radar system indicates a malfunction when using the parking function. The diagnosis is a faulty sensor or abnormal wiring from the sensor to the controller; replacement of a new controller or sensor is needed. 4. False alarm from the reverse radar system:
When my car displays a radar system malfunction, it's often due to sensors being covered by dirt, snow, or water, blocking signal reception and causing the system to misjudge the fault. I think it could also be caused by loose or corroded wiring connections, which can be triggered by rain or bumpy roads. Another common reason is a blown fuse hidden in the fuse box, requiring a simple replacement. If the warning persists after restarting the car, it might be a software glitch or damaged electronic module, which is more complex. These radar systems are crucial for avoiding collisions, and their failure significantly increases risks during reversing or lane changes. Therefore, I recommend first cleaning the sensors with a soft cloth; if that doesn’t work, check the fuses; if still unresolved, promptly visit a repair shop and avoid risking driving.
