My fob is acting weird. It will lock the car, but won't unlock it, yet, sometimes, if I get close to the car, it'll unlock without me pushing the button.

I've tried a new battery, sprayed out the innards with electronic cleaner, nada.

I'm wondering if I should try a new body for the fob, replace everything except the metal bit that goes into the lock? Has anyone out there tried one? Got a good link for one?

Thanks!