The seat belt on the right side in the second row failed to work. My son-in-law was sitting in that position when I, who was driving, began to proceed through an intersection when I thought the light had turned green. When I realized I was wrong, I slammed on the brakes. His seatbelt did not arrest his forward movement, and he hit the back of the right front passenger seat. Thank goodness I had only been going about 5 mph. Also, the belt did not retract afterwards. For the remaining two blocks of our trip, he had a few feet of slack seat belt in front of him. I have not yet reported the issue to Toyota.