Not sure if your windshield has an automatic rain sensor? If you turn your windshield wipers to the “intermittent” setting and they either a) come on automatically when it rains, or b) adjust speed based on the amount of rain or your vehicle’s speed, then you have this feature. Still not sure? Try turning your car on, switching the wipers to intermittent, and spraying water anywhere on the windshield with a squirt bottle. If the wipers activate, you have a rain sensor.R