r/BmwTech•
cipherous

Battery for BMW Fob: Does duracell/Energizer/other "well regarded" brands work sufficiently or give out enough voltage?

Recently, I've been having issues with my key fob not being detected by my 2021 X3, I have to place the FOB next to the steering wheel to be detected.

I've changed the FOB with an amazon brand then tried a name brand like energizer. The issue of the key not being detected kept coming back which made me look for other causes such as shorts, even interference from other wireless gadgets but before I go that route, I want to make sure I have the proper battery.

Posted Dec 1, 2025, 4:00 AM UTC

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