hello everyone I"v reading caddy manual about how to programmer key adding new key first you have to make copy it should be cheap . then insert your original key IGN on but to not start for 10 sec then back to off and remove it within 10 sec insert that new copy IGN on do not start until you see anti thieft service appear on dispaly for about 20 sec i guess back to off then its good to go

 

Provided added key is the correct type (transponder). Cheap steel key will start car, after original key is removed, but wont start it 10 min after car is turned off.