Hello everyone.

I'm trying to get my car back home after I had to leave it at work tonight. It is a 2004 Coupe. I went out to the car after work and hit the unlock button on the fob and noticed that it didn't work. So I figued I'd just unlock it with the regular key and figure it out at home. I unlocked the car and go to get in and the alarm sounds when I open the door. I try and get it to stop by turning on the car and it tries to start but then dies a second later. I did that a few times, and eventually now it won't start at all. I went back into work and bought new batteries for the fob (conveniently I work at Home Depot) and put them in. I then tried to do the same thing and still it won't start at all and the alarm sounds when I open the door. After some searching I think the problem may be that the fob died and now it's not being recognized by the car. What is the process to re-sync the remote with the car?

I'd really appreciate some help if anyone can assist.