Keys will work to start the car even if the buttons don't work. I learned this after my first fob broke after a misunderstanding between me and replacing that stupid little battery. And the second one went swimming with me. So the unlock didn't work on either. Instead of buying two new keys, since the dealer could reprogram neither, for like $500, I spent $400 on a remote start that came with two new keys. This is for an '08 though. '07 and before has different keys and different systems.
Sent from my Autoguide iPhone app
2008 Brilliant Black SRT8
Option Group III
Lots of BT and BND
'I don't need to go fast, but I need to know I can go fast...'