2008 Toyota 4Runner Owners Manual - Page 239

07 12.25 Tire pressure warning system The tire pressure warning system warns you that the tire inflation pressure is low. The tire pressure warning system is not a substitute for checking normal tire inflation pressure. Check the tire inflation pressure with a tire pressure gauge regularly. The tire pressure warning light comes on when the engine switch is in "ON" position and goes off after a few seconds. This means the tire pressure warning system is operating properly. If the tire inflation pressure becomes low, the light comes on again. In this case, adjusting the tire inflation pressure will turn off the light after a few minutes. If the light comes on after blinking for 1 minute, the tire pressure warning system is not working properly. Indicator status Type A CY16069 CAUTION The warning system may not activate immediately if blowout or sudden air loss should occur. Meanings Tire inflation pressure is low Tire pressure warning system malfunction Do this Adjust the tire inflation pressure Have the system checked at your Toyota dealer ON CY16068 ON after blinking for 1 minute Type B 197