all functions work except the actual remote starting i think it has something to do with the security sys feature on truck [ there is no alarm sys] truch is a stock ford superduty 6.4 diesel auto tranny the place i had it installed is out of buisness however i remenber having to bring in two keys for the install and they said they had to "trick" the truck into thinking startes was 3rd key it worked well for a year but now it wont do anything without the key in ignition ? could you tell me how to "retrick" the truck ? thank you dom