2008 Toyota Camry Owners Manual - Page 456

5-2. Steps to take in an emergency n When a tires is replaced with a spare tire Vehicles with a compact spare tire The compact spare tire is not equipped with the tire pressure warning valve and transmitter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat tire is replaced with the spare tire. Replace the spare tire with the repaired tire and adjust the proper tire inflation pressure. The tire pressure warning light will turn off after a few minutes. Vehicles with a full-size spare tire The spare tire is also equipped with the tire pressure warning valve and transmitter. The tire pressure warning light will turn on if the tire inflation pressure of the spare tire is low. If a tire goes flat, even though the flat tire is replaced with the spare tire, the tire pressure warning light does not turn off. Replace the spare tire with the repaired tire and adjust the proper tire inflation pressure. The tire pressure warning light will turn off after a few minutes. n If the tire pressure warning system is inoperative The tire pressure warning system may become inoperative in the following conditions: (When the condition becomes normal, the system will work properly.) l If tires not equipped with tire pressure warning valves and transmit- ters are used. l If the ID code on the tire pressure warning valves and transmitters is 5 When trouble arises not registered in the tire pressure warning computer. l If electronic devices or facilities using similar radio wave frequencies are nearby. l If a large metallic object which can interfere with signal reception is put in the trunk l If a radio set at similar frequencies is in use in the vehicle. l If a window tint that affects the radio wave signals is installed l If there is a lot of snow or ice on the vehicle, in particular around the wheels or wheel housings. l If non-genuine Toyota wheels are used. (Even if you use Toyota wheels, the tire pressure warning system may not work properly with some types of tires.) 387