2012 Toyota Sienna Owners Manual - Page 340

2-4. Using other driving systems Vehicles without a smart key system: If the engine switch is turned off and then turned to the "ON" position again, the vehicle will automatically return to vehicle-tovehicle distance control mode. Vehicles with a smart key system: If the "ENGINE START STOP" switch is turned off and then turned to IGNITION ON mode again, the vehicle will automatically return to vehicle-to-vehicle distance control mode. Adjusting the speed setting: →P. 300 Canceling and resuming speed setting: →P. 302 the 306 SIENNA_U (OM45477U)