2009 Lexus LX 570 Owners Manual - Page 646

5-2. Steps to take in an emergency n SRS warning light This warning light system monitors the following: l The airbag sensor assembly l Front airbag sensors l The curtain shield airbag sensors l The side and curtain shield airbag sensors l The seat belt buckle switches l The driver's seat position sensor l The inflators l The interconnecting wiring and power sources l The front passenger occupant classification ECU l "AIR BAG ON" and "AIR BAG OFF" indicator lights l The seatbelt pretensioners l The roll sensing of curtain shield airbags off indicator light n Changing the engine oil Make sure to reset oil change system n When the tire pressure warning light comes on Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire pressure warning reset switch does not turn off the tire pressure warning light. n The tire pressure warning light may come on due to natural causes The tire pressure warning light may come on due to natural causes such as natural air leaks or tire inflation pressure changes caused by temperature. In this case, adjusting the tire inflation pressure will turn off the warning light (after a few minutes). n When a tire is replaced with a 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. 652