Went out last night to get into the car...fob wouldn't work. Opened with the key and drove home no problem. Thought it was the battery in the fob so I changed them out....still wouldn't work. Went and got other fob, that didn't work either. Started the car and left key in ignition for about 30 seconds and second fob worked. Did the same thing with original and that was fine too. Must have been some kind of bcm or security system glitch.

 

That sounds like some symptoms others have had with a failing battery. See if you can find other threads on that subject?

 

My goes through batteries every other month. I keep backups now.

 

I meant the big 12VDC one under the hood.