2013 Chevrolet Volt Owner Manual - Page 186

8-8 Climate Controls Humidity Sensor The humidity sensor is near the base of the inside rearview mirror. The climate control system uses the sensor information to adjust the temperature and recirculation for best comfort. Outside Air Temperature Sensor The outside air temperature sensor is located behind the front grille of the vehicle. The vehicle uses the sensor information to display outside air temperature. The climate control system uses the information to adjust the climate system operation. Sensors Solar Sensor The solar sensor is on top of the instrument panel, near the windshield, where it monitors solar intensity. The climate control system uses the sensor information to adjust the temperature, fan speed, recirculation, and air delivery mode for best comfort. Do not cover the sensor; otherwise the automatic climate control system may not work properly. Air Vents Use the louvers on the air vents to change the direction of the airflow. Use the thumbwheels near each vent to open and close off the airflow. Operation Tips . Keep all outlets open whenever possible for best system performance. Keep the path under all seats clear of objects to help circulate the air inside the vehicle more effectively. Use of non-GM approved hood deflectors can adversely affect the performance of the system. Do not attach any devices to the air vent slats, this restricts airflow and may cause damage to the air vents. . . .