2009 Cadillac XLR-V Owner's Manual - Page 81

Immobilizer Operation The vehicle has a passive theft-deterrent system. The system is automatically armed when the ignition is turned off. The immobilization system is disarmed when the ignition is turned to OFF/ACCESSORY or START and a valid transmitter is found in the vehicle. You do not have to manually arm or disarm the system. The security light comes on if there is a problem with arming or disarming the theft-deterrent system. The system has one or more keyless access transmitters that are matched to an immobilizer control unit in the vehicle. Only a correctly matched keyless access transmitter starts the vehicle. The vehicle may not start if the keyless access transmitter is damaged. If the engine does not start and the security light comes on, there may be a problem with the immobilizer system. Press the START button again. If the vehicle does not start and the keyless access transmitter appears to be undamaged, try another keyless access transmitter. Or, place the transmitter in the transmitter pocket. See "NO FOBS DETECTED" under DIC Warnings and Messages on page 3-60 for additional information. Check the fuse. See Fuses and Circuit Breakers on page 6-83. If the engine still does not start with the other transmitter, the vehicle needs service. If the engine does start, the first transmitter may be faulty. See your dealer/retailer or have a new keyless access transmitter programmed to the vehicle. The immobilizer system can learn new or replacement keyless access transmitters. Up to four keyless access transmitters can be programmed for the vehicle. To program additional transmitters, see "Matching transmitter(s) to Your Vehicle" under Keyless Access System Operation on page 2-5. Do not leave the key or device that disarms or deactivates the theft deterrent system in the vehicle. 2-23