Rear Sensor System

The sensor is mounted inside of the windshield, near the rearview mirror. The sensor projects infrared light into the windshield at a 45-degree angle. If the glass is dry, most of this light is reflected back into the sensor by the front of the windshield. If water droplets are on the glass, they reflect the light in different directions. When water is on the glass, the less light makes it back into the sensor. The electronics and software in the sensor turn on the wipers when the amount of light reflected onto the sensor decreases to a preset level. When the wiper switch is turned to AUTO, the unit can operate the wipes at any speed. The software sets the speed of the wipers based on how fast the moisture builds up between wipes. The system adjusts the speed as often as necessary to match with the rate of moisture accumulation.