2007 Buick Lucerne Owner's Manual - Page 189

wx (Driver's Temperature Controls): Press these buttons next to the fan control to manually increase or decrease the temperature inside your vehicle. wx (Passenger's Temperature Controls): Press these buttons next to the mode control to manually increase or decrease the temperature for the front passenger. If the passenger's climate control system is off, pressing one of these buttons will turn it on. PASS (Passenger's Climate Control): Press this button to turn the passenger's climate control systems on or off. If the PASS button is pressed to turn the passenger temperature setting off, the driver's temperature setting will control the temperature for the entire vehicle. Sensors The solar sensor, located in the defrost grille, middle of the instrument panel, monitors the solar radiation. Do not cover the solar sensor or the system will not work properly. There is also an interior temperature sensor located next to the steering wheel that measures the temperature of the air inside your vehicle. 189