Don't know about '00 but my key charges its self when in the ignition. No battery to change. Could it be something with the security codes? Like the car tuned out the remote because it was pressed so many times?
"100% sure DIY. close the doors. turn ign on. turn ign off. take key out and while depressing unlock press lock 3 times and the key fob will blink and the doors wil cycle lock and unlock. or maybe its lock and unlock reversed... but anyways that how you do it.... o you have to it for all the keys the cycle ign one more time to stop programming."
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