2010 Cadillac CTS Owner's Manual - Page 9

Keys, Doors and Windows One of the following keys comes with the vehicle. 1-3 This key is used for the driver door, ignition, and glove box. This key, located inside the keyless access transmitter, is used for the driver door, glove box, and rear seat pass-through door. See "Rear Seat Pass-Through Door" under Trunk (Sedan) on page 1‑17 for more information. This type of transmitter has a thin button (A) near the bottom of the keyless access transmitter. To remove the key, press (A) and pull the key out. Never pull the key out without pressing the button.