For 1990-2009 cars

If the front seats have the heated and cooled seat feature, the buttons used to control this feature are located on the front doors near the door handle.

(Cooled Seat): To cool the entire seat, press the button with the cooled seat symbol. This symbol will appear on the climate control display to indicate that the feature is on. Press the button to cycle through the temperature settings of high, medium, and low and to turn the cooled seat off. Indicator bars next to the symbol designate the level of cooling selected: three for high, two for medium, and one for low.
(Heated Seat and Seatback): To heat the entire seat, press the button with the heated seat and seatback symbol. This symbol will appear on the climate control display to indicate that the feature is on. Press the button to cycle through the temperature settings of high, medium, and low and to turn the heated seat off. Indicator bars next to the symbol designate the level of heat selected: three for high, two for medium, and one for low.

The heated and cooled seats will be canceled after the ignition is turned off. To use the heated and cooled seat feature after the vehicle is started, you will need to press the appropriate seat button again.