I have a serious issue with my '07 Crossfire Roadster, and I really hope someone here can help me with it. I replaced the batteries in the key fob and now the key won't re-sync to the car. I've tried what I believe to be the re-syncing process (insert key but don't turn it, press lock button twice, turn key to 'run' within 30 seconds) but to no avail. All the lights on the dash come on, but the car stubbornly refuses to start. I'm at my wit's end over this: obviously I can't start the car at all right now, and unfortunately I lost the second key fob about 15 years ago, so this is my only one.

I read somewhere that a dealership might be able to re-code the key fob, but the few I've tried have told me that I'd have to take both the fob and the car to them. So no help there. On top of all this, I've also read that a replacement, correctly-coded key fob from the manufacturer might cost around $650. I can buy an iPad Air for less than that!

So any advice would be gratefully received. As you can imagine, my beautiful car's worth nothing to me at the moment - just a big, immovable block of metal in my garage. I'd really like my Crossfire back.