Just wondering how to solve my problem I've just bought new batteries for both my keys and none of them seem to want to open or lock the doors with the remote now with one of my keys it's a little bit worn on the metal it will lock the door but not unlock it...and I get a little paranoid about perhaps locking the key with good metal in the car (it's happened before!)

Is there any way I can get them to work again I've tried to make the car "learn" the RF frequencies again by following advice from someone saying you've got to switch it from 0 to II on the barrel 4 times remove key and press a button but none of that works...any ideas?