2013 Toyota Sienna Owners Manual - Page 1094

5-2. Steps to take in an emergency STEP 4 Press and hold for 2 seconds or more or press briefly 3 times or more Vehicles with a smart key system: To stop the engine, press and hold the "ENGINE START STOP" switch for 2 consecutive seconds or more, or press it briefly 3 times or more in succession. STEP 5 Stop the vehicle in a safe place by the road. CAUTION