2008 Lexus SC 430 Owners Manual - Page 331

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 The front airbag sensors l The side airbag sensors l The driver's seat belt buckle switch l The driver's seat position sensor l The front passenger's seat belt buckle switch l The front passenger occupant classification ECU l The pressure sensor l The belt tension sensor l The front passenger airbag on-off indicator light l The seat belt pretensioner assemblies l The inflators l The interconnecting wiring and power sources 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 turn on due to natural causes The tire pressure warning light may turn 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 tires is replaced with a spare tire (if equipped) The compact spare tire is not equipped with the tire pressure warning valve & transmitter. If a tire goes flat, the 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 warning light will turn off after a few minutes. 294