2010 Cadillac DTS Owner's Manual - Page 111

Keys { WARNING: Leaving children in a vehicle with the ignition key is dangerous for many reasons, children or others could be badly injured or even killed. They could operate the power windows or other controls or even make the vehicle move. The windows will function with the keys in the ignition and children could be seriously injured or killed if caught in the path of a closing window. Do not leave the keys in a vehicle with children. The master key is used for the driver door, ignition, and glove box. The valet key is used for the driver door and ignition. Notice: If you ever lock your keys in the vehicle, you may have to damage the vehicle to get in. Be sure you have spare keys. In an emergency, contact Roadside Assistance. See Roadside Service on page 8-7. 3-3