BMW Key Fob Remote Batteries & How to Replace Them

The German car giant loves it’s key fobs to start it’s cars. It’s been doing keyless start and entry for 20+ years. BMW key fob batteries need replacement every 3-5 years depending on usage. I got 5 years from my first battery for my X3 before needing to replace it.

Sedan Models

SUV / X-Series Models

Key Fob Remotes

BMW has made about 10 different types of key fobs over the years.

  • U Shaped Key
  • Diamond Shape Key – Battery: VL2020
  • Rectangular Shape Key (comfort access) – Battery: CR2032
  • Rectangular Shape Key (non-comfort access) – Battery: VL2020
  • Trapezoid Shape Key – Battery: CR2450
  • Sleek Slant Shaped Key – Battery: CR2032
  • T Shape Key (comfort access) – Battery: CR2032
  • T Shape Key (non-comfort access) – Battery: VL2020
  • i Key
  • Display Key

I created a guide to show how to change the battery in BMW comfort access key remotes vs non-comfort access fobs.

PictureKeyYearsBuy Battery
U Shaped Keyearly 90s
Diamond Shape Key90-early 2000sVL2020 Check on Amazon
Rectangular Shape Key (Comfort Access)2000sCR2032 Check on Amazon
Rectangular Shape Key (Non-Comfort Access)2000sVL2020 Check on Amazon
Trapezoid Shape Key2011-2017CR2450 Check on Amazon
Sleek Slant Shaped Key2017-PresentCR2032 Check on Amazon
T Shape Key (Comfort Access)2002-2008CR2032 Check on Amazon
T Shape Key (Non-Comfort Access)2002-2008VL2020 Check on Amazon
i Key2013-Present
Display Key2016-Present

Sleek Slant Shaped Key

This BMW Key Fob and Battery were popular in 2011, 2012, 2013, 2014, 2015, 2016, 2017 F-Series Models like the 3, 5, 7 series and the X3.

Battery: CR2032

How to change the battery in the Trapezoid Shape BMW Key Fob