Here’s a quick look at the 2013 Lexus LX body structure and airbags.
10-airbag system, including: Driver’s and front passenger’s advanced airbag system with front passenger’s twin-chamber airbag, Driver’s and front passenger’s knee airbags, Front and rear Roll-Sensing Curtain Airbags (RSCA), Front seat-mounted side airbags, and Rear seat-mounted side airbags.
Below are a couple of pictures of the rear seat belt pretensioners. These pretensioners are located in the base of the C-Pillar.