Cadillac 2009 owner manual Driver and Passenger Side Temperature Knob, Automatic Operation

Press the up or down arrows on the fan switch, the defrost button, the AUTO button, driver side temperature knob, or the air conditioning button to turn the system on when it is off.

Driver and Passenger Side

Temperature Knob

The driver and passenger side temperature knobs are used to adjust the temperature of the air coming through the system on the driver or passenger’s side of the vehicle. The temperature can be adjusted even if the system is turned off. This is possible since outside

air always flows through the system as the vehicle is moving forward unless it is set to recirculation mode. See “Recirculation” later in this section.

Turn the knob clockwise or counterclockwise to increase or decrease the cabin temperature. The display will show the temperature setting increasing or decreasing.

Set the passenger’s temperature setting to match

the driver temperature setting by pressing the passenger power knob.

Automatic Operation

AUTO (Automatic): When automatic operation is active the system will control the inside temperature, the air delivery, and the fan speed.

Use the steps below to place the entire system in automatic mode:

1.Press the AUTO button.

When AUTO is selected, the display will change to show the current temperature(s) and AUTO will appear. The current delivery mode and fan speed will also be displayed for approximately five seconds.

When AUTO is selected, the air conditioning operation and air inlet will be automatically controlled. The air conditioning compressor will run when the outside temperature is over about 40°F (4°C). The air inlet will normally be set

to outside air. If it is hot outside, the air inlet may automatically switch to recirculate inside air to help quickly cool down the vehicle. The light on the button comes on in recirculation.

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