2009 Toyota Camry Owners Manual - Page 387
2009 Toyota Camry Manual
Page 387 highlights
2-1. Driving procedures Engine (ignition) switch (vehicles with smart key system) Modes can be switched by pressing the "ENGINE START STOP" switch when carrying the electronic key on your person. (The engine can be started in any mode by operating the "ENGINE START STOP" switch at the same time as depressing the brake pedal.)