2003 Lexus LS 430 Owners Manual - Page 149
2003 Lexus LS 430 Manual
Page 149 highlights
COMFORT ADJUSTMENT Seat belt pretensioners 16L330b 16L329b This indicator comes on when the ignition switch is turned to the "ON" position. It goes off after about 6 seconds. This means the seat belt pretensioners are operating properly. This warning light system monitors the airbag sensor assembly, front airbag sensors, side and curtain shield airbag sensors, occupant detection sensor, seat belt buckle switch, seat belt pretensioner assemblies, inflators, warning light, interconnecting wiring and power sources. (For details, see "Service reminder indicators and warning buzzers" on page 46.) The seat belt pretensioners other than that for the rear center belt 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 seat belts are quickly drawn back in by the retractor so that the belts snugly restrain the seat occupants. The front passenger seat belt pretensioner will not activate if there is no passenger sitting in the front passenger seat. However, the front passenger seat belt pretensioner may activate if luggage is put in the seat, or the seat belt is buckled up regardless of the presence of the occupant in the seat. The outside rear seat belt pretensioners are activated even with no passengers in the outside rear seat. Collisions occurring at certain speeds and angles may cause the seat belt pretensioners and SRS airbags not to operate all together. 135