I feel your pain. My wife`s key works and mine doesn`t. It starts the car fine and all, just wont lock or unlock the doors. When I took my FOB apart, i measured the voltage on the battery and got a reading of 3.42 volts. When I measured voltage when pressing the buttons, I`d get a voltage drop, so I know it was sending a signal. Of course I tried reprogramming and all, but no joy. I may take it apart agian and resolder everything. Like you, I am VERY reluctant to spend 300 bucks for a freakin` key!

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Cheers!
Chris

03 X5
02 Acura
88 Mustang GT Ragtop
88 Campion Allante 195
99 Itasca 29