Black plate (16,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -2015 - CRC - 10/31/149-16 Driving and OperatingIf the vehicle is not in P (Park), theignition will return to ACC/ACCESSORY and display themessage SHIFT TO PARK in theDriver Information Center (DIC).See Transmission Messages onpage 5-46. When the vehicle isshifted into P (Park), the ignitionsystem will switch to OFF.Do not turn the engine off when thevehicle is moving. This will cause aloss of power assist in the brakeand steering systems and disablethe airbags.If the vehicle must be shut off in anemergency:1. Brake using a firm and steadypressure. Do not pump thebrakes repeatedly. This maydeplete power assist, requiringincreased brake pedal force.2. Shift the vehicle to N (Neutral).This can be done while thevehicle is moving. After shiftingto N (Neutral), firmly apply thebrakes and steer the vehicle to asafe location.3. Come to a complete stop, shiftto P (Park), and turn the ignitionoff. On vehicles with anautomatic transmission, the shiftlever must be in P (Park) to turnthe ignition to the OFF position.4. Set the parking brake. SeeElectric Parking Brake onpage 9-27.{ WarningTurning off the vehicle whilemoving may cause loss of powerassist in the brake and steeringsystems and disable the airbags.While driving, only shut thevehicle off in an emergency.If the vehicle cannot be pulled over,and must be shut off while driving,press and hold the ENGINE START/STOP button for longer thantwo seconds, or press twice infive seconds.ACC/ACCESSORY (AmberIndicator Light): This mode allowsthe use of some electricalaccessories when the engine is off.With the ignition off, pressing thebutton one time without the brakepedal applied will place the ignitionsystem in ACC/ACCESSORY.The ignition will switch from ACC/ACCESSORY to OFF afterfive minutes to prevent batteryrundown.ON/RUN/START (Green IndicatorLight): This mode is for driving andstarting. With the ignition off, andthe brake pedal applied, pressingthe button once will place theignition system in ON/RUN/START.Once engine cranking begins,release the button. Engine crankingwill continue until the engine starts.See Starting the Engine onpage 9-17. The ignition will thenremain in ON/RUN.