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 keyis removed from the ignition.The system is automatically disarmed when the keyis turned to ON/RUN, ACC/ACCESSORY or STARTfrom the LOCK/OFF position.You do not have to manually arm or disarm the system.The security light will come on if there is a problemwith arming 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 onthe instrument panel cluster comes on when trying tostart the vehicle, there may be a problem with yourtheft-deterrent system. Turn the ignition off and try again.If the engine still does not start, and the key appearsto be undamaged, try another ignition key. At this time,you may also want to check the fuse, see Fusesand Circuit Breakers on page 5-99. If the engine stilldoes not start with the other key, your vehicle needsservice. If your vehicle does start, the first key maybe faulty. See your dealer/retailer who can servicethe PASS-Key® III+ to have a new key made.In an emergency, contact Roadside Assistance.It is possible for the PASS-Key® III+ decoder to learnthe transponder value of a new or replacement key. Up toeight additional keys may be programmed for the vehicle.The following procedure is for programming additionalkeys only. If all the currently programmed keys are lostor do not operate, you must see your dealer/retailer or alocksmith who can service PASS-Key® III+ to have keysmade and programmed to the system.2-21