Could be lost residual power when battery was changed. May need to reset fobs to car. Check out the " stickies" on the top of this forum, page #1 . look for key reset instructions. I believe you put key in turn to on position, wait until all dash lights go out, turn key to off. Wait 10 sec. And do it again. Then a third time. But after third time start car. Then repeat with second key. Better explanation in the "stickie". Good luck.