One problem related to mid/rear seats assembly has been reported for the 2009 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Toyota 4Runner based on all problems reported for the 2009 4Runner.
I sat in the rear seat of a 2010 Toyota 4runner. I am 6'1". I had clearance above my head. However, the roof is domed only above the seat. When I leaned forward my head contacted the roof. I believe serious head injuries are possible due to the interior design of this vehicle for taller passengers.