Sorry for resurrecting such an old topic but I am having the same issue at the moment and I am stuck in a parking lot of Target :/ key fobs batteries just dies. When I tried to unlock/lock the doors, it doesnt do anything. I unlocked the door manually with they key and tried to turn on the car but it doesnt start. So i went into target and purchased new batteries for the fob, cr 2025,2 of them, but now the fob still doesnt work also the car still doesnt start. It tries to start once in a while but dies right away. I remember changing the keyfob batteries before and it worked fine afterwards, i didnt need to sync it or anything like that. Do you guys have an idea about what is going on? Thanks in advance!