2001 Lexus IS 300 User Guide 1 - Page 101

COMFORT ADJUSTMENT SV16061 SV16068 This indicator comes on when the ignition key is turned to the "ACC" or "ON" position. It goes off after about 6 seconds. This means the front seat belt pretensioners are operating properly. The warning light system monitors the airbag sensor assembly, front airbag sensors, side airbag sensors, door side airbag sensors, front seat belt pretensioner assemblies, inflators, warning light, interconnecting wiring and power sources. (For details, see "Service reminder indicators and warning buzzers" on page 38.) " 1 2 3 4 Front airbag sensors Seat belt pretensioner assemblies SRS warning light Airbag sensor assembly The front seat belt pretensioner system consists mainly of the above components and their locations are shown in the illustration. The front seat belt pretensioners are controlled by the airbag sensor assembly. The airbag sensor assembly consists of a safing sensor and airbag sensor. When the front seat belt pretensioners are activated, an operating noise may be heard and a small amount of smoke-like gas may be released. This gas is harmless and does not indicate that a fire is occurring. Once the front seat belt pretensioners have been activated, the seat belt retractors remain locked. 87