Nope. I had the same problem and didn't have to spend anything. It only locked up when it was really hot outside or perhaps the sunrays effected it in the way that it often effects car alarm remotes.

I did several things like change fuses so I'm not sure what ultimately fixed it. In any case you are likely wasting money on a $0 fix.

I also tried oiling the key before putting it in to oil the inside. Never had another problem since and it may have been just the heat effecting the read of the circuit inside the key fob.