How To Change BMW Key Fob Battery
BMW Key Fob Battery Replacement: This is a BMW 3 series F30 key fob but this design is shared on other BMW models too (F30 / F31 /F34 / F10). BMW key fob will not need any programming after changing battery and will work normally right away.
If you have a previous generation vehicle E90/E 91/E92/ E60/X series, read here how to How To Replace BMW E60 Key Fob Battery.
How To Change BMW Key Fob Battery
Image below shows a 2012 BMW 335i key fob.
First step, remove key blade from key fob. Press button (red arrow) and pull key blade out of BMW key fob. Key blade is used to manually gain access of vehicle if key fob battery fail.
How To Dismantle BMW Key Fob
Battery is located under battery cover on back of BMW key fob (arrow), you will need a small screwdriver (a knife will do too) to open cover and change battery.
As you see on picture below there is a small tab on top corner of key fob and will be used to insert a screwdriver to open battery cover.
Insert screwdriver and pry out battery cover.
BMW key fob battery can now be removed. Picture below shows a key fob with battery cover opened.
BMW KeyFob Battery Type
Battery type is CR 2450 3 volts. Its a different battery from previous generations. This one is a thicker design. However, it is widely available at parts stores or online. Unless you want to go with dealer prices.
How To Change BMW Key Fob Battery: Carefully slide battery out of key fob and replace it with a new one.
Push battery cover back in place by inserting bottom part first and pressing on top part to lock it. Install key blade on BMW key fob and your done. Key Fob does need any programing and should work normally after battery replacement.
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