Then I went to the car and the fob wouldn't open the door - I thought the damn car battery was dead again, but didn't see HOW that was even possible. So, I took the key out of the fob, opened the door and the alarm went off so it wasn't the battery. The fob wouldn't shut off the alarm on the first two tries, then did, and then everything worked fine. I'm gonna take the fob to the local Infinity dealer and get a new battery for the fob, just in case.