2009 Toyota Sienna Owners Manual - Page 265
2009 Toyota Sienna Manual
Page 265 highlights
2 -5 . Driving inform a t ion Dinghy t ow ing Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground) behind a motor home. 2 When driving NOTICE n To avoid serious damage to your vehicle Do not tow your vehicle with four wheels on the ground. 237