Lexus RX 450h 2012 Owner's Manual page 134

1-8. Safety information
SRS side and curtain shield airbags
Front SRS side airbags
Can help protect the torso of the front seat occupants
1
Rear SRS side airbags
Can help protect the torso of occupants in the rear outer seats
SRS curtain shield airbags
Can help protect primarily the head of occupants in the outer seats
133