2005 Cadillac CTS Owner's Manual - Page 345

Tire Pressure Monitor System (CTS-V) The Tire Pressure Monitor (TPM) System uses radio and sensor technology to check tire pressure levels. If your vehicle has this feature, sensors are mounted on each run-flat tire and wheel assembly. The TPM sensors transmit tire pressure readings to a receiver located in the vehicle once every 60 seconds while the vehicle is being driven, and once every 60 minutes if the vehicle is stationary for more than 15 minutes. Using the Message Center, tire pressure levels can be viewed by the driver. For additional information about the message center operation and displays, see Message Center (CTS-V) on page 3-52. When a low tire pressure condition is detected, a low tire warning light, on the instrument panel cluster, comes on to warn the driver. When the tire pressure monitoring system warning light is lit, one or more of your tires is significantly under-inflated. You should stop and check your tires as soon as possible, and inflate them to the proper pressure as indicated on the vehicle's tire information placard. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Each tire, should be checked monthly when cold and set to the recommended inflation pressure as specified in the vehicle placard and owner's manual. The Tire and Loading Information label (tire information placard) is attached, to either, the center pillar near the driver's door latch post or on the rear edge of the driver's side rear passenger door. The label shows the size of your vehicle's original tires and the correct inflation pressure for your vehicle's tires when they are cold. See Inflation - Tire Pressure on page 5-62 and Loading Your Vehicle on page 4-33 for additional information. 5-65