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In this video, we demonstrate the replacement of the battery of a key without keyless go.
If you do not have keyless go, the battery can't be accessed usually. While it is recharged during driving, the battery can still fail after some years. This will be reported by the car. It might also be the case when the remote features are no longer working. You can either only replace the battery and then sand and glue the old case back together, or buy a new set that can be closed by pressing it together. You can also use this guide to "overhaul" your key and give it a fresh look.
Part numbers:
➥ BMW Key Emblem: 66122155754
➥ Battery: LIR2025 ( amzn.to/2CmLcVz )
Tools:
➥ Cutter
➥ Soldering iron
➥ Glue
✔ Requirements
➥ E9X, E8X
➥ No Keyless Go
Cost of repair: ~20 EUR
Difficulty: Easy
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