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4th Gen Ram Tech2009 - 2018 Rams and the 2019 Ram Classic: This section is for TECHNICAL discussions only, that involve the 2009 - 2018 Rams and the 2019 Ram Classic. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I don't know for sure, but it almost has to have a replaceable battery. I'm not sure about the 2012 fobs, but on mine (2015) if you pop the key out and look inside, there's a little screw there. Maybe that will give you access to the battery?
I've got to get mine looked at soon too. Both fobs started working less and less until they stopped working entirely. Switching batteries didn't help, so it seems like it must be the receiver in the truck.
I've got to get mine looked at soon too. Both fobs started working less and less until they stopped working entirely. Switching batteries didn't help, so it seems like it must be the receiver in the truck.
Have you tried opening them up and cleaning the contacts? My fob had the same symptoms as yours and stopped working. I cleaned it up and it worked for a few and then again it would be hit and miss. I took my wife's fob (which has hardly ever been used and may still have the original battery) and it works great.
I think that maybe the contacts just get worn out. The dealer wants $160 for the fob and $60 to program it. I'm holding out till the second fob goes out.