I got my m440i last August (2022) brand new and already had to change the battery once earlier this July (2023) as I kept on getting a low battery alert. I figured it was a bad battery at the time and made sure to get Energizer 2032 lithium in the replacement.
Much to my dismay, I got the alert again yesterday, about 4 months after I last changed the battery. My last BMW’s key fobs lasted much longer. The key fobs for another one of my previous cars lasted well over 7 years on the original battery; car passed on to relative so I’m aware of the current condition.
Is anyone else experiencing poor battery life on their newer fobs or is this a possible faulty key fob?
Note: I use remote start on occasion and tend to use my key to open the trunk remotely.
So at one point I had to change my key fob battery and about 6-8 months later had to change it again. Strangely enough it’s been over 3 years and I haven’t changed it since.