2011 Cadillac DTS Owner's Manual - Page 192

Automatic Operation AUTO 9 (Automatic Fan): When this position is selected on the fan control, the system adjusts the fan speed. To use automatic operation: 1. Turn the fan control to the AUTO position. 2. Turn the air delivery mode to the AUTO position. 3. Adjust the temperature to a comfortable setting between 21°C (68°F) and 26°C (78°F). Choosing the coldest or warmest temperature setting will not cause the system to heat or cool any faster. In cold weather, the system will start at reduced fan speeds to avoid blowing cold air into the vehicle until warmer air is available. The system starts out blowing air at the floor but may change modes automatically as the vehicle warms up to maintain the chosen temperature setting. The length of time needed to warm the interior depends on the outside temperature and temperature of the vehicle. 4. Wait 20 to 30 minutes for the system to stabilize in order for the system to regulate automatically. Then adjust the temperature as necessary to find your comfort setting. Do not cover the solar sensor located in the center of the instrument panel near the windshield. For more information on the solar sensor, see "Sensors" later in this section. After the vehicle is started, the display shows the interior temperature settings and the outside temperature. If the AUTO position is selected on the fan or mode control, the system automatically controls the air conditioning compressor. The A/C compressor will run automatically even at cool outside temperatures in order to dehumidify the air. The A/C indicator light is lit when the system is operating automatically, even at near freezing outside temperatures. Press # on the fan control to turn off the A/C. For improved window clearing performance in defog or defrost modes, the A/C compressor runs automatically. h (AUTO RECIRCULATION): If the AUTO position is selected on either the fan or air delivery mode control, the system automatically controls the air inlet to supply fresh outside air or recirculate the interior air to cool the car faster. The light on the recirculation button will come on when the system changes to recirculation. Outside air can be forced by pressing h when the light is lit. For vehicles without rear climate controls, press : to force outside air. The next time AUTO fan or mode is selected, the air inlet will reset back to AUTO operation. 4-34