i am having the same issue as the above poster...lights up when i hit lock but does nothing. it seems to work randomly because most of the times they will lock..just occasionally i will drive around and go to lock my doors and not work...however they always work at the panel in the car and the unlock function always works..i just have an occasional problem locking my car which is annoying and concerning because i can lock the doors by pushing down the rods but i have no way to lock my trunk with a 1200$ sound system in it. any ideas..i will look into the fuse/light thing people have mentioned and see what i can find