Unless someone has done some serious modification to the system, your SVT does have a PATS system.
If it is an early 98 and you still have a working key, you can add a second key and program the car to recognize it yourself. If you have a late 98 and newer, you need two working keys to add another key.
If you have a late 98 and only one working key, you will need to have the car programmed to accept the new key. This must be done with the dealer NGS scan tool (WDS may also work). The going price for this is one hour labor at the dealer's labor rate.
The cost of the key itself is roughly $20.00 to $30.00.
To add a key on an early 98, insert the working key into the ignition and turn the key on briefly, immediately turn off and remove the key, immediately insert the new key turn it on long enough for the theft light to go out (also briefly). Now both keys should work.
Adding a key to a late 98 is the same except that both old working keys must be inserted one at a time befor inserting the new key. If you add a fourth key, you must repeat with the two original keys and then the fourth key.
What happened to your other key? Did you lose it? That isn't good. Old saying is man who lose key don't get no new key.
