Section 45 (HVAC System (Service Information)): Controls: Sensor-Infrared: Description
WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
The infrared sensor is used only on models equipped with the automatic temperature control (ATC) heating -A/C system. The infrared temperature sensor consists of a infrared transducer concealed behind a clear lens (1) located within the instrument panel mounted A/C-heater control (2).