There is no single industry standard

No single standard applies Automakers have adopted different procedures for turning off engines in an emergency for cars with keyless ignitions.GENERAL MOTORS Corvette, Cadillac XLR: Push power button once.Cadillac SRX, Buick LaCrosse: Push and hold button for two seconds or tap button twice.FORD (includes Ford Taurus and Lincoln CCC)Push and hold power button for one second.TOYOTA (includes Toyota Avalon and most Lexus models)Push and hold power button for three seconds.CHRYSLER (includes Dodge Challenger and Chrysler 300)Push and hold button for three seconds when speed is greater than 5 mph.HONDA (includes Acura RL and TL) Push and hold button for three seconds or tap button three times.HYUNDAI (includes Genesis and Veracruz)Push and hold power button for three seconds or tap button three times.NISSAN (includes Nissan Altima and Infiniti G37) Push and hold button for two seconds or tap button three times.BMW (includes X6 and 7-series)Push and hold power button for two seconds or tap button three times.MERCEDES-BENZ (most models)Shift car into neutral and press button once.