I was given 3 Key-less entry remotes when I purchased my 2003 Hyundai Sonata.
Recently, I've been having problems when trying to unlock the doors. None of the 3 remotes will unlock the doors. They will lock the doors and open the trunk.
I've replaced the batteries in all 3 remotes but it didn't help.
Does anybody have any idea what is causing this problem?


Thanks