I went to open my cars drivers door at work, but it wouldn't open, so I had to go in through the passengers door. At home I tried locking and unlocking on the fob but to no success. After a while I thought I'd try the key to see if it opened, at first it wouldn't, but now it does??!!!! HOWEVER, if I lock the car on the fob, it WILL NOT open on the fob, I have to lock it on the key and then unlock it on the key to be able to open the door??!! Any Ideas??