my car has the same problem with not responding to the master door look switch. I have no idea what the problem is though, I guess the controller is fried on mine, but I would check the fuse if there is one, that might be the problem for ya. If not, the new box is about 300 bucks I think, and for that, I'll just lean around my car and pull up/push down the nobs as required for unlocking/locking the doors 