Anyone know how to do this? I am thinking of getting a spare from eBay.

 

Sure, no problem, just need to know what year model you have, and the remote you buy should look identical to the ones you already have.

 

Just look at the back of the OEM key fob and get the part number. The eBay auctions should list the part number, so you can just search on that to get the exact match. I did the same thing for my 04, since I bought it used and it only came with one fob. I bought another on eBay for about $10 including shipping.

And here's the process. From the 03 manual, p.147:

Programming remote transmitters
It is necessary to have all (maximum of four — original and/or new) of your remote transmitters available prior to beginning this procedure.
To program the transmitters yourself:

• Unlock all doors using the power door lock/unlock control. Insert a key in the ignition and turn from 1 (LOCK) to 3 (ON) and cycle between 1 (LOCK) and 3 (ON) eight times in rapid succession (within 10 seconds) with the eighth turn ending in the 3 (ON) position. The locks will cycle between unlocked and locked to confirm that the programming mode has been entered.
• Within 20 seconds, program a remote transmitter by pressing any button on a transmitter. The locks will cycle once to confirm that the remote transmitter has been programmed. (If more than 20 seconds pass before pressing a remote transmitter button, the programming mode will exit and the procedure will have to be repeated.)
• Repeat the previous step to program additional remote transmitters. The locks will cycle once to confirm that each remote transmitter has been programmed.
• When you have completed programming the remote transmitters, turn the ignition to 1 (LOCK) or wait 20 seconds. Again the doors will lock/unlock to confirm programming has been completed.

 

Thank you for that. I should have looked in the manual. I knew that programming the PATS key is in there but I didn't think remote programming was.