Works on a 2005 Liberty. If you are wondering if this will work for your car, but don't want to do the entire remote start installation to find out, you can test this device very easily on its own in your car. The only requirement is that you have 2 working keys to start your car. You cannot program a new key for your car on your own unless you have 2 keys. If you only have one, then you need to go to a dealer to have them do it. This will not work unless you already have 2 keys!
This device acts like the transponder in a key only when it is powered up. Powering this device is as simple as it gets. Only 2 wires, power and ground. So pretend it is a key, but it is missing the metal part that you stick into the car to start it. Just like a new key you have to program it. Here's how to do that:
1. Stick key#1 into the car and turn it to run, but don't start the car.
2. Count to at least 10.
3. Take key#1 out.
4. Within 10 seconds from taking key#1 out, put key #2 in and turn it to run.
5. Wait another 10 seconds and the car should chime more and the security light should be on. That means it is ready to learn new keys.
6. Turn key#2 to the off position, take it out, and wrap the plastic part completely in aluminum foil (this will block its transponder).
7. Power up this bypass unit and hold the small chip part near the key (you can get 12v from pin 16 on the diagnostic connector, grounds on pin 4 and 5, or you can get 12v and ground from the cigarette adapter).
8. Put key#2 back in the ignition and turn it to run while holding the powered up chip near the key. (Make sure you get steps 6,7, and 8 done in ten seconds or less. I had an adapter for the cigarette lighter that let me just plug it in real quick.)
9. Wait. After about 10 seconds the car should chime and the security light should light up. This means it learned the bypass module just like it would do for a key. Done.
How to test that it worked for sure?
1. Keep key#2 wrapped in foil and try to start the car.
2. It should start but stall after 2 seconds and the security/VTSS light will be on. (This is what my Jeep did. Also shows the security system works correctly.)
3. Try starting it again, but now hold the powered up bypass module chip near the key.
4. If it starts now, even though key#2 is wrapped in foil with its transponder chip blocked, but the car is able to recognize the bypass chip as a valid "key" ... then you are ready to install your remote start system.
