Key battery replacement

[Stillk]

My 2023 SE keeps prompting me to replace the battery in my key fob. I replaced the battery in both keys - made sure that the batteries were good - no change. It usually occurs when I first use the car in the morning but will sometimes occur throughout the day.
Not sure if the weather could be responsible - has been brutally cold lately -14 F this AM.

 

[Lainey]

My car is 4 years old now. I haven't replaced the battery in either fob. While it is now in the positive for temps, it's been brutally cold and we had no school 2 days due to it. No battery replacement notices. I do notice my fob has to be closer than before though but not sure if it's age or cold.

 

[Mike Dunn]

My 2023 SE keeps prompting me to replace the battery in my key fob. I replaced the battery in both keys - made sure that the batteries were good - no change. It usually occurs when I first use the car in the morning but will sometimes occur throughout the day.
Not sure if the weather could be responsible - has been brutally cold lately -14 F this AM.

Make sure the key fob is near the instrument cluster when you attempt a start. If it's in your pocket or a few feet away from the start toggle, you'll get that warning. Seems to be a proximity thing.

 

[Puppethead]

Make sure the key fob is near the instrument cluster when you attempt a start. If it's in your pocket or a few feet away from the start toggle, you'll get that warning. Seems to be a proximity thing.

That sounds the like behavior of a low battery, from my experience. I keep my fob in my left (driver door side) pocket, so it's not exactly near the reader. I usually have to change out the battery every two years or so.

 

[Mike Dunn]

I don't think it's a low battery issue. I only occurs if I haven't driven the Mini for more than four or five days...like the car has missed me and wants me to assure it of my presence. It loves me.