2007 Toyota Prius Owners Manual - Page 81

-Seat belt pretensioners 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 "-Front passenger occupant classification system" on page 81.) The seat belt pretensioner and SRS airbags may not operate together in all collisions. 22p009b 22p237 There are seat belt pretensioners for both front seats. They are designed to be activated in response to a severe frontal impact. When the sensor detects a severe frontal impact, the front seat belts are quickly drawn back by the retractor so that the belts snugly restrain the occupants. The seat belt pretensioner system consists mainly of the following components and their locations are shown in the illustration. 1. Front airbag sensors 2. SRS warning light 3. "AIRBAG ON" and "AIRBAG OFF" indicator lights 4. Front passenger's switch seat belt buckle 5. Front passenger occupant classification system (ECU and sensors) 6. Seat belt pretensioner assemblies 7. Airbag sensor assembly 64