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. Find videos on how to change the battery for each on the individual car page, or below the table.

  • 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
BMW Diamond Shape Key BatteryDiamond Shape Key90-early 2000sVL2020


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BMW Rectangular Shape Key (Comfort Access) BatteryRectangular Shape Key (Comfort Access)2000sCR2032


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BMW Rectangular Shape Key (Non-Comfort Access) BatteryRectangular Shape Key (Non-Comfort Access)2000sVL2020


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BMW Trapezoid Shape Key BatteryTrapezoid Shape Key2011-2017CR2450


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Sleek Slant Shaped Key2017-PresentCR2032


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BMW T Shape Key (Comfort Access) BatteryT Shape Key (Comfort Access)2002-2008CR2032


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BMW T Shape Key (Non-Comfort Access) BatteryT Shape Key (Non-Comfort Access)2002-2008VL2020

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U Shaped Keyearly 90s
i Key2013-Present
Display Key2016-Present

How to change the battery in the diamond shaped BMW key fob

1998 - 2005 BMW E46 3 Series Key Fob Battery Replacement DIY
Keyecu VL2020 Remote Key Rechargeable Battery for BMW E46 E60 E92 3 328 330 X5 (90 degree Leg)
  • Battery Model: VL2020
  • Please compare the leg position carefully,this battery is 90 degrees leg
  • it is a Rechargeable battery

How to change the battery in the Rectangular Shape Key (comfort access) BMW key fob

2006 - 2012 BMW 3 Series Key Battery Replacement E90 Fob Remote
Keyecu VL2020 Remote Key Rechargeable Battery for BMW E46 E60 E92 3 328 330 X5 (90 degree Leg)
  • Battery Model: VL2020
  • Please compare the leg position carefully,this battery is 90 degrees leg
  • it is a Rechargeable battery

How to change the battery in the Rectangular Shape Key (non-comfort access) BMW key fob

2006 - 2012 BMW 3 Series Non-Comfort Access Key Battery Replacement E90 Fob Remote
AmazonBasics CR2032 3 Volt Lithium Coin Cell Battery - 4-Pack
  • 4-pack of lithium coin cell batteries; CR2032 cell size
  • 8-year leak-free shelf life, ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • Replacement for BR2032, DL2032, and ECR2032

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

2011 - 2014 BMW X3 Key Battery Replacement F25 Fob Remote
Sale
Energizer Lithium Coin Blister Pack Watch/Electronic Batteries, 1 Count (Pack of 2)
  • Pack of 2 batteries
  • Lithium coin batteries for watches and electronic devices
  • Has a power of 3 volts

How to change the battery in the Sleek Slant Shaped Key BMW key fob

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

2018, 2019 BMW X3 Key Battery Replacement G01 Fob Remote
AmazonBasics CR2032 3 Volt Lithium Coin Cell Battery - 4-Pack
  • 4-pack of lithium coin cell batteries; CR2032 cell size
  • 8-year leak-free shelf life, ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • Replacement for BR2032, DL2032, and ECR2032

How to change the battery in the T Shape Key (comfort access) BMW key fob

2001 - 2008 BMW 7 Series Comfort Access Key Battery Replacement E65 Fob Remote
Keyecu VL2020 Remote Key Rechargeable Battery for BMW E46 E60 E92 3 328 330 X5 (90 degree Leg)
  • Battery Model: VL2020
  • Please compare the leg position carefully,this battery is 90 degrees leg
  • it is a Rechargeable battery

How to change the battery in the T Shape Key (non-comfort access) BMW key fob

2001 - 2008 BMW 7 Series Non-Comfort Access Key Battery Replacement E65 Fob Remote
AmazonBasics CR2032 3 Volt Lithium Coin Cell Battery - 4-Pack
  • 4-pack of lithium coin cell batteries; CR2032 cell size
  • 8-year leak-free shelf life, ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • Replacement for BR2032, DL2032, and ECR2032

Frequently Asked Questions

What battery goes in BMW key?

The battery for your key depends on the key fob. But the most common BMW key batteries are 3v coin batteries like the: CR2032, CR2450 and the rechargeable VL2020.

How much does it cost to replace a BMW car key?

BMW car keys must be programmed, this is usually done at a BMW dealership. When I lost a key, it cost roughly $400 to have the dealership program a new key. I had to give them a copy of my drivers license and registration as well. Not cheap.

How do I charge my BMW key?

If you have a key fob with a rechargeable battery, the VL2020, your key will charge when it is placed into the ignition of your BMW vehicle. The VL2020 can eventually go bad, and to replace it you’ll need a soldering kit. Check out one of our videos to see how to replace a rechargeable key battery.

How do you change the battery in a 2011 BMW key fob?

The year isn’t so much as important the type of BMW key fob type. Different vehicles and even the same model will often use multiple or different fob types. See our table above with pictures of every fob type. It’s likely for 2011 you have a CR 2450, but double check above.