Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Toyota for this TSB. Call your local Toyota dealer's service department & ask for a copy of TSB# T-SB-0118-15.
TSB: SOME 2011 – 2015 MODEL YEAR SIENNA VEHICLES MAY EXHIBIT A CONDITION WHERE THE DRIVER SIDE 2ND ROW SEAT WITH THE TIP-UP STYLE LOWER SEAT CUSHION HAS EXCESSIVE UP AND DOWN MOVEMENT. WHILE SOME SEAT MOVEMENT IS A NORMAL CHARACTERISTIC OF THE DESIGN, THIS BULLETIN WILL HELP IDENTIFY EXCESSIVE MOVEMENT AND PROVIDE STEPS TO ADDRESS THIS CONDITION.
