Replacing New Battery in BMW Key FOB 1 3 5 7 series X1 X2 X3 X4 X5 X6

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I show you actually how to replace the battery once you get the casing open.
Yes you have to cut these keys open to get to the battery and then change the battery on the circuit board.
I show you how here. Plus what to do if this doesn't fix your issue.

Replacing New Battery in BMW Key FOB 1 3 5 7 series X1 X2 X3 X4 X5 X6

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ML2020 battery
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Quality correct size Battery Newer keys:
BMW keys have many different types of batteries so check your type before buying.
Buy a replacement Key Fob;