Gilly:

Thanks for the reply, I should have mentioned that I did install new batteries and get a red light on the remote. The manual says to point the remote at one of the receivers by the locks and send a signal, then to unlock or lock the door within 30 seconds using the master key. None of that worked so I guess I have to assume there is something wrong on the vehicle side with the system. Someone told me that when I send a signal to the receiving unit that there should be a light that flashes back, but I don't see that, again suggesting something on the vehicle side, but I have no idea what.