Section 87 (HVAC Systems (Service Information)): Controls: Sensor-Infrared: Description
WARNING: This page is about a different car, the 2007 Jeep Grand Cherokee. 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).