2010 Cadillac CTS Owner's Manual - Page 31

Keys, Doors and Windows If the engine still does not start with the other key, the vehicle needs service. If the vehicle does start, the first key may be damaged. See your dealer/retailer who can service the theft-deterrent system and have a new key made. It is possible for the theft-deterrent system decoder to learn the transponder value of a new or replacement key. Up to 10 keys can be programmed for the vehicle. The following procedure is for programming additional keys only. To program a new key do the following: 1. Verify that the new key has stamped on it. 3. After the engine has started, turn the key to LOCK/OFF, and remove the key. 4. Insert the key to be programmed and turn it to ON/RUN within five seconds of the ignition being turned to LOCK/OFF in Step 3. 5. The security light will turn off once the key has been programmed. It may not be apparent that the security light went on due to how quickly the key is programmed. 6. Repeat the Steps 1 through 4 if additional keys are to be programmed. Do not leave the key or device that disarms or deactivates the theft deterrent system in the vehicle. 1-25 Immobilizer Operation (Keyless Access) This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the ignition control knob is turned to LOCK/OFF. The immobilization system is disarmed when the ignition control knob is pushed in and a valid transmitter is found in the vehicle. 1 2. Insert the current driver's key in the ignition and start the engine. If the engine will not start see your dealer/retailer for service. The security light, located in the instrument panel cluster, comes on if there is a problem with arming or disarming the theft-deterrent system.