2007 Jeep Liberty Owner's Manual - Page 18

18 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE Important Note About Service A four digit PIN number is needed to service the Sentry Key Immobilizer System. This number can be obtained from your authorized dealer. However, this number can also be found on your customer invoice that you were given upon receipt of your vehicle. Replacement Keys NOTE: Only keys that have been programmed to the vehicle electronics can be used to start the vehicle. Once a Sentry Key has been programmed to a vehicle, it cannot be programmed to any other vehicle. At the time of purchase, the original owner is provided with a four digit PIN number. This number is required for dealer replacement of keys. Duplication of keys may be performed at an authorized dealer or by using the Customer Key Programming procedure. This procedure consists of programming a blank key to the vehicle electronics. A blank key is one which has never been programmed. NOTE: When having the Sentry Key System serviced, bring all vehicle keys to the dealer. Customer Key Programming You can program new keys to the system if you have two valid keys by doing the following: 1. Cut the additional Sentry Key Transponder blank(s) to match the ignition switch lock cylinder key code. 2. Insert the first valid key into the ignition switch and turn the ignition switch ON for at least 3 seconds but no longer than 15 seconds. Turn the ignition switch OFF and remove the first key. 3. Insert the second valid key and turn the ignition switch ON within 15 seconds. After ten seconds, a chime will sound and the SKIM indicator light will begin to flash. Turn the ignition switch OFF and remove the second key.