Remote lock problem

I'm new here and will get to the intro page asap. Just bought a 2004 Tundra double. Came with 1 remote. Lock/unlock/panic. Unlock/panic work fine. Lock - nothing happens, except the green light comes on. I've spent the last two nights trying every system, even called a locksmith, and nothing has worked. I can't even find a comparable item online that deals exactly with this. One thing I did learn: The truck will NOT go into the programing mode. Any and all help will be greatly appreciated. Have a wonderful weekend, Bill

 

Update: I discovered that if I hold the "lock" button, on the remote, for 15+ seconds, the doors will lock. I don't think that's the way it should work. The "unlock" and "panic" buttons work fine. BTW, the lock/unlock controls in the truck work great. Still need some help on the remote. Have a wonnerful weekend, a Merry Christmas, and a very Happy New Year, Bill

 

just guessing here, but it sounds like a problem with the remote itself. good luck hope you get it sorted out.

 

That was my original thought but with the truck not going into the programing mode I'm not sure. Hope everyone had a great Christmas, Bill

 

Have still been looking, without success, for an answer but tonight came up with a "work-around". After leaving the vehicle, all doors closed and windows up, press the "unlock" button and within 30 seconds all doors lock. I noticed that if I unlocked the door(s) with the remote but didn't open at least one, they'd auto relock (I know, it's in the manual). Wondered if that would work to lock them, and sure enuff, it does! Have a wonnerful week, Bill

 

The battery for the fob might be dieing