Just thought I share that my (bought it used) 2017 Bolt Premier pop up a message on the driver panel saying that the keyfob battery was weak and needed replacement. The keyfob is in my pocket and never really comes out. The Bolt locks the door automatically and when I come near it I push the button to unlock and open. So it was interesting to see the message. I tested the battery and it was at 20%. I tested the other keyfob (wife has on her key chain) and it was down to 40% replaced that one also. This was a nice experience compared to what I recall with another car years ago with a dead keyfob in the rain. Nice that you get a warning before being stranded. BTW still loving my Bolt!