2001 Cadillac DeVille Owner's Manual - Page 192

Outside Temperature Display The outside temperature is always displayed when your vehicle is running. You can change it from Fahrenheit to Celsius by pressing the ENG/MET (English/metric) button on the left side of the instrument panel cluster. The outside temperature sensor is located near the front grille. The sensor can be affected by road or engine heat during idling, slow driving or when the engine is first started after a short trip. In order to ensure proper automatic climate control operation, the outside air temperature display may not update as quickly as expected. This is to allow the air surrounding the outside temperature sensor to be as close to the actual outside conditions as possible. This is determined by how much time has elapsed since the vehicle has been turned off and by vehicle speed. Mode Button Press the MODE button to deliver air through the floor, middle or windshield outlets. The system will stay in the selected mode until the MODE button is pressed again. Press the up or down arrow to cycle through the available modes. Automatic Operation When the system is set for automatic operation, sensors will control the air delivery mode. Air will come from the floor, middle or windshield outlets. The fan speed will vary as the system maintains the selected temperature setting. Be careful not to put anything over the solar sensor located in the middle of the instrument panel near the windshield. This sensor is used by the automatic system to regulate temperature. To find your comfort zone, start with the 75_F (24_C) setting and allow about 30 minutes for the system to regulate. Turn the knob to adjust the temperature if necessary. If you choose 60_F (16_C), the system will remain at that maximum cooling setting and will not regulate fan speed. If you choose the temperature of 90_F (32_C), the system will remain at that maximum heating setting and will not regulate fan speed. Choosing either maximum setting will not cause the system to heat or cool any faster. 3-3