Below are instruction to program remote key:
I'm sure you use your existing key for the below only using the REMOTE key for step 3 once "Learning Mode" has been activated.
1. Insert Key and turn to II, then Turn Key from II to I and back to II four times within 3 seconds
2. The PATS LED should light. Turn Key to Position 0.
3. Press the Unlock button and keep it pressed until the PATS LED flashes 4 times.
4. Add additional fobs the same way. Turn to II and back to 0 to end.
Martin