key fob

I have one issue some times my Tacoma will auto lock all 4 doors by itself after I have turned the vehicle off and gotten out and walked away and some times while still standing next to it. It has a standard key fob and I checked the voltage of the 3V battery and it was at 3.1V, I replaced it...

It seems one is missing. I called the dealership, they quoted $400 for to "flash," so that the missing fob can no longer unlock or operate the vehicle. Isn't there a DIY way to do this? Maybe through the dashboard system, connect and disable one of fobs? For $400, I'd expect new fobs and...