2008 Toyota 4Runner Owners Manual - Page 242

07 12.25 IF THE TIRE PRESSURE WARNING LIGHT COMES ON AFTER BLINKING FOR 1 MINUTE...If the tire pressure warning light comes on after blinking for 1 minute when the engine switch is in "ON" position, the tire pressure warning system is not working properly. The system will be disabled in the following conditions: (When the condition becomes normal, the system will work properly.) Type A D If a radio set at similar frequencies is in use in the vehicle. D If a window tint that affects the radio wave signals is installed. CY16072 D If there is a lot of snow or ice on the vehicle, in particular around the wheels or wheel housings. D If tires not equipped with tire pressure warning used. valves and transmitters are D If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer. CY16071 D If the tire inflation pressure is more than 500 kPa (5.1 kgf/cm2 or bar, 73 psi). The system may be disabled in the following conditions: (When the condition becomes normal, the system will work properly.) D If electronic devices or facilities using Type B similar radio nearby. wave frequencies are 200