I recently had a potentially expensive close call. My gym locker was broken into and the most valuable item in the locker was the key to my truck. Fortunately something interrupted the thief. A friend of mine had recently lost a coded key to his Ford and I believe the dealer charged him upwards of $250 to replace the key.
I did some investigating including the most basic, reading the owner's Manual and found out that if you have two working keys for my dodge and many other vehicles the vehicle will actually code a new blank code key by following the instructions in the Manual.
The keys are available online and of course must be cut by a professional and from that point the owner's Manual will instruct you how to use your two existing keys to code a new key. In my case I purchased two keys for about $17.00 apiece without the remote alarm functions. The coded keys will disarm the alarm even if it has been set and will also start the vehicle. I figured at the very least if someone breaks into my locker a key without a remote alarm function it will make it difficult to locate the vehicle they might want to steal.
Just in FY I for those like myself who may not have known about the capability of many vehicles coding their own keys or have not thought about the expense of a lost key. Making a key before you lose one can save you a couple hundred dollars.
http://www.autotransponder.com/car_keys?gclid=COrR6e_-rKICFRNZiAod6CweRA