2005 Lexus GX 470 Owners Manual - Page 187

OCCUPANT RESTRAINT SYSTEMS Seat belt pretensioners "Roll sensing of curtain shield airbags off (RSCA OFF) indicator light The driver and front passenger's seat belt pretensioners are designed to be activated in response to a severe frontal impact or a vehicle rollover. When the sensor detects a severe frontal impact or a vehicle rollover, the front seat belts are quickly drawn back by the retractors so that the belts snugly restrain the front seat occupants. The front passenger's seat belt pretensioner will not activate if no passenger is detected in the front passenger seat by the front passenger occupant classification system. However, the front passenger's seat belt pretensioner may activate if luggage is put on the seat, or the seat belt is buckled up regardless of the presence of an occupant in the seat. (As for the front passenger occupant classification system, see page 194.) The seat belt pretensioners and SRS airbags may not operate together in case of collisions at a certain speeds and angles. 162 The seat belt pretensioners will not operate in a vehicle rollover if the "RSCA OFF" indicator light is on. For details, see "Roll sensing of curtain shield airbags off switch" on page 199.