How Long Does a BMW Car Key Battery Last?

[BeckettDella]

BMW car key batteries typically last three to four years. If the battery in the car key runs out of power, it needs to be replaced. Without replacing the battery, the remote key will not function properly. The method to replace the battery in a BMW car key is as follows: 1. Press the dot button on the car key to remove the mechanical key; 2. Insert a tool into the gap of the car key and pry it open; 3. Remove the old battery and replace it. Precautions for replacing the car key battery include: 1. Wrap the tip of the screwdriver with a cloth when disassembling the car key to prevent damage to the key; 2. Avoid getting water on the disassembled key and circuit board, and keep them as dry as possible; 3. Do not touch the components on the circuit board; 4. Ensure the new battery model matches the old battery model.