How to Replace the Battery in a New BMW 1 Series Key?

1 Answers
EmmaLynn
07/30/25 3:17am
How to replace the battery in a new BMW 1 Series key: Purchase a battery that matches the model, most BMW key batteries are CR2450; Press the rear cover latch; Pull the key upwards; Insert the mechanical key into the latch on the other side and pry off the rear cover; Pop out the rear cover and then open it with your fingers; Use the rear cover or a toothpick to knock out the old battery, replace it with a new one, and reassemble. When the key battery is low, the following signs will alert the owner: The remote control distance becomes shorter or occasionally fails; If the dashboard indicates that the key is not detected, it means the battery is dead. If the message disappears after a while and the car operates normally again, it indicates the key is in a low-power state and may run out of power at any time.
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