The owner's manual gives pretty worthless information. It simply says, "press the tire pressure reset button." Great! Care to tell us where it is?
After hunting around, and finding the two previous posts almost as helpful and as a cup of sand in the desert, I found it.
The tire pressure reset button is above the accelerator pedal, just below the knee airbag under the driver's side dash. Once you crawl under there you'll see it (it helps to bring a flashlight with you.) Fill the tires with the correct air pressure, and then just hold the button down for 5 seconds with the ignition on and the parking brake set, with the vehicle in park and it will reset. Be sure to fill up the spare as well, as this will set it off, too. There is NO need to reset each individual wheel, and the sensors will not reset themselves like the previous posts inaccurately stated.
Hope this helps!