Dodge 2008 Durango - Manual (Page 125)

To Tumble the 40% seat, fully raise the lever on the side
of the seat to release the floor latches and tumble the seat.
WARNING!
Do not drive the vehicle with the outer 40% second
row seats in the tumbled position. The outer 40%
second row seats are only intended to be tumbled for
entry and exit to the third row seat. Failure to follow
these instructions could result in personal injury.
Fold, Tumble, and Recline Lever
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 125
3