Solutions for Car Rain Sensor Malfunctions?
2 Answers
Loosen the fixing screw of the lower tipping bucket adjustment screw. If the rain indication value is too large, rotate both adjustment screws outward along the axis simultaneously. Each full rotation reduces the indication value by 0.3mm. After adjustment, pour water for testing, repeating multiple times until accurate. Secure the adjustment screws, reinstall the metal housing, and the adjustment is complete.
I just had an issue with the rain sensor a couple of days ago—the wipers wouldn’t turn on when they should, making driving in the rain quite dangerous. Here’s how to fix it: First, clean the sensor area, usually located at the top center of the windshield, using glass cleaner to remove dust and grime. Sometimes, dirt can block the sensor and prevent it from detecting rain. If cleaning doesn’t help, check the fuse. Look for the wiper-related fuse in the engine compartment’s fuse box and gently replace any blown fuse with a screwdriver. If that doesn’t work, there might be a loose connection or a short circuit—try unplugging and reconnecting the sensor plug to ensure it’s secure. If the problem persists, don’t push your luck; head straight to a 4S shop or repair center for a diagnostic check. You might need to replace the sensor or recalibrate the system. Driving without automatic wipers in the rain is too risky, so it’s best to address the issue promptly before it leads to an accident.
