after changing the key batteries in my key i saw the infared light working inside the remote but the car is not picking up the signal when i try to lock or unlock...........the key has worked fine previously this is the first battery change ive done on the remote.......i remember that it might need to be programmed i read that you have to press the button and put the key in the door lock and hold and turn it first right then left and it should be programmed...........ive tried that again and again and there is no luck........any other suggestions would help.......or perhaps i am doing the programming wrong......any suggestions would be appreciated i dont want to have to go buy a new key