sounds to me like the chip in your key went bad? I got a key cut to just open the door A $7 key.. No Fob nothing.. I was told this will open your door only..They said If I use it to start the truck the truck will start.. run about 10 minutes and then quit.. They said then Ill have to get the truck towed back to the dealer to have the computer reset and reprogram my good Key with the chip in it. They also said the same could happen if the chip goes bad in my $250 dollar key and fob?