2005 Chrysler Pacifica Owner's Manual - Page 172

172 UNDERSTANDING YOUR INSTRUMENT PANEL 21. Tire Pressure Monitor Warning Light - If Equipped This light will turn on when there is a Low tire pressure condition. The light will remain on until the tire pressure is properly set. The light will also flash if a problem exist with any tire sensor. The light will flash for approximately three seconds every 10 minutes or until the problem with the sensor is corrected. This light will turn on momentarily as a bulb check when the engine is started. When the tire pressure monitoring system warning light is lit, one or more of your tires is significantly underinflated. You should stop and check your tires as soon as possible, and inflate them to the proper pressure as indicated on the tire and loading information placard. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Each tire, including the spare, should be checked monthly when cold and set to the recommended inflation pressure as specified in the tire and loading information placard and owner's manual. NOTE: If one of the vehicle active tires has been replaced by the spare or a wheel rim not equipped with a TPM sensor, the tire pressure monitor warning light will flash for approximately three seconds every 10 minutes. Repair or replace the tire or sensor as soon as possible.