My situation is similar but different.. my car started with no problems, but key FOB was coming apart so I bought a new one on ebay and switched over parts. FOB locks and unlocks I can see a little light flicker when i hit the buttons, but when tried to start car it ran and died 2 times then no turnover everything comes on like a valet key but car won't start. what did i mess up when I switched FOB's? Please direct me in the right direction.