The roll-down rear window, a hallmark feature on the 4Runner ... one of many models that share the TNGA-F body-on-frame architecture that is expected to underpin the new 4Runner.

The polycarbonate rear window is glued in place with a bonding ... the noise was the window partially separated from the frame, but in some instances, the window fully detached from the car.

The invisible frame application removes the need for an internal or external architectural enclosure. It features 32 or 44 mm double or triple glazing, and sliding window surfaces of up to 18 m² ...