My Tundra has keyless entry but no factory alarm system. It would be really cool, literally since I live in Central Texas, to be able to cool the truck down before I get into it. I'm not keen on springing for an alarm system with remote start,mainly because everyone ignores them when they go off anyway. I'm wanting to know if adding just a remote start would necessitate carrying another clicker or could the keyless entry system be integrated on the existing clicker or on the one for the remote start. I'm just trying to get out of carrying a wad of "stuff" in my pocket all the time..