Black plate (15,1)Cadillac STS Owner Manual - 2011Lockout ProtectionThe vehicle can be programmed to sound the hornthree times and unlock the driver's door when all doorsare closed and there is a keyless access transmitterinside the interior of the vehicle. When the driver's dooris reopened, the key in reminder chime will soundcontinuously. The vehicle will remain locked only whenat least one transmitter has been removed from thevehicle and both doors are closed. See VehiclePersonalization on page 3‑59.Trunk{ WARNING:Exhaust gases can enter the vehicle if it is drivenwith the liftgate, trunk/hatch open, or with anyobjects that pass through the seal between thebody and the trunk/hatch or liftgate. Engineexhaust contains Carbon Monoxide (CO) whichcannot be seen or smelled. It can causeunconsciousness and even death.(Continued)WARNING: (Continued)If the vehicle must be driven with the liftgate,or trunk/hatch open:. Close all of the windows.. Fully open the air outlets on or under theinstrument panel.. Adjust the Climate Control system to a settingthat brings in only outside air and set the fanspeed to the highest setting. See ClimateControl System in the Index.. If the vehicle is equipped with a power liftgate,disable the power liftgate function.For more information about carbon monoxide, seeEngine Exhaust on page 3‑36.3-15