2002 Lexus ES 300 Owners Manual - Page 126

COMFORT ADJUSTMENT Front seat belt pretensioners The driver and front passenger's seat belt pretensioners are designed to be activated in response to a severe frontal impact. When the airbag sensor detects the shock of a severe frontal impact, the front seat belts are quickly drawn back in by the retractors so that the belts snugly restrain the front seat occupants. The front seat belt pretensioners are activated even with no passenger in the front seat. This indicator comes on when the ignition key is turned to the "ON" position. It goes off after about 6 seconds. This means the front seat belt pretensioners are operating properly. This warning light system monitors the airbag sensor assembly, front airbag sensors, side and curtain shield airbag sensor assemblies, curtain shield airbag sensor assemblies, driver's seat position sensor, driver's seat belt buckle switch, front seat belt pretensioner assemblies, inflators, warning light, interconnecting wiring and power sources. (For details, see "Service reminder indicators and warning buzzers" on page 48 for instructions.) 112