Cadillac 2010 DTS Owner's Manual

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PASS-Key ® III+ ElectronicImmobilizerSee Radio Frequency Statement on page 8‑20for information regarding Part 15 of the FederalCommunications Commission (FCC) Rules andRSS-210/211 of Industry Canada.PASS-Key ® III+ ElectronicImmobilizer OperationYour vehicle has PASS-Key ® III+ (PersonalizedAutomotive Security System) theft-deterrent system.PASS-Key ® III+ is a passive theft-deterrent system.The system is automatically armed when the key isremoved from the ignition.The system is automatically disarmed when the key isturned to ON/RUN, ACC/ACCESSORY or START fromthe LOCK/OFF position.You do not have to manually arm or disarm the system.The security light will come on if there is a problem witharming or disarming the theft-deterrent system.When the PASS-Key ® III+ system senses that someoneis using the wrong key, it prevents the vehicle fromstarting. Anyone using a trial-and-error method to startthe vehicle will be discouraged because of the highnumber of electrical key codes.If the engine does not start and the security light comeson when trying to start the vehicle, there may be aproblem with your theft-deterrent system. Turn theignition off and try again.If the engine still does not start, and the key appears tobe undamaged, try another ignition key. At this time,you may also want to check the fuse, see Fuses andCircuit Breakers on page 6‑106. If the engine still doesnot start with the other key, your vehicle needs service.If your vehicle does start, the first key may be faulty.See your dealer who can service the PASS-Key ® III+to have a new key made. In an emergency, contactRoadside Assistance.It is possible for the PASS-Key ® III+ decoder to “learn”the transponder value of a new or replacement key.Up to 10 keys may be programmed for the vehicle.The following procedure is for programming additionalkeys only. If all the currently programmed keys arelost or do not operate, you must see your dealer or alocksmith who can service PASS-Key ® III+ to have keysmade and programmed to the system.3-21