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Ever found yourself stuck outside your BMW, desperately trying to unlock it with a key fob that seems to have lost its magic touch? Frustrating, isn’t it? But fear not, because in this article, you’ll discover the simple yet essential skill of changing the battery in your BMW key fob. Imagine the convenience of never having to deal with a dead key fob again – sounds like a game-changer, right? Well, that’s exactly what you’ll learn how to do here. So, grab your BMW key and let’s dive into the quick and easy steps to keep you moving smoothly.
Step 1: Gather the Tools
To start changing the battery on your BMW key fob, it’s essential to have the right tools at hand. Here’s what you’ll need:
- A replacement battery suitable for your BMW key fob model. Commonly used batteries for BMW key fobs are CR2032 or CR2450.
- A small flathead screwdriver or a coin (like a quarter) for opening the key fob.
- A clean cloth to prevent any scratches on the casing while working on it.
Once you have these tools ready, you’re all set to move on to the next step in the process.
Step 2: Locate the Battery Compartment
When changing the battery in your BMW key fob, the next essential step is to locate the battery compartment. This is where the actual replacement process begins.
To find the battery compartment:
- Look for a small slot on the side or back of your key fob.
- This slot is usually where you can use a flathead screwdriver or coin to pry open the key fob.
- Once you have access to the inside of the key fob, you will easily spot the battery compartment.
Remember, finding the battery compartment is crucial as it allows you to proceed with the key fob battery replacement accurately.
Step 3: Remove the Old Battery
- Open the battery compartment with a flathead screwdriver.
- Carefully take out the old battery.
- Dispose of the old battery properly.
Battery Type | CR2025 Coin Cell Battery |
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Lifespan | Around 2-3 years |
Step 4: Insert the New Battery
Now that you’ve successfully removed the old battery from your BMW key fob, it’s time to insert the new battery. Follow these simple steps:





- Check the Battery Type: Ensure you have the correct replacement battery. The BMW key fob typically uses a CR2025 coin cell battery.
- Position the New Battery: Insert the new battery into the compartment, ensuring it sits snugly in place.
- Close the Compartment: Gently close the cover, making sure it clicks securely into position.
- Test the Key Fob: Press the buttons on the key fob to confirm that the new battery is working properly.
- Reprogram (if necessary): In some cases, you may need to reprogram the key fob after changing the battery. Refer to your vehicle’s manual for instructions or contact a professional if needed.
Remember, proper battery maintenance is essential for the smooth functioning of your BMW key fob. Regularly check and replace the battery as needed to avoid any inconveniences.
Step 5: Test the Key Fob
To ensure that your BMW key fob is functioning correctly after replacing the battery, testing the key fob is essential. Here are the steps to help you confirm proper functionality:
- Make sure the new battery is securely in place in the compartment.
- Press any button on the key fob to check if it responds.
- Verify that the key fob successfully locks and unlocks your BMW.
- Test the key fob from various distances to ensure its range.
Regularly testing your key fob’s functionality can help you catch any issues early and maintain the convenience of keyless entry for your BMW.
Important Note: |
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It’s recommended to perform a test on your key fob periodically to ensure it is working correctly. |
Conclusion
You’ve now completed the final step in changing the battery of your BMW key fob. By testing its functionality post-replacement, you ensure smooth operation and uninterrupted keyless entry. Remember to keep the new battery securely in place, test all buttons, and confirm the key fob’s range. Regular testing is key to maintaining the convenience of your key fob. Enjoy hassle-free access to your BMW with a properly functioning key fob.





Frequently Asked Questions
How do I test a BMW key fob after changing the battery?
After changing the battery, ensure it is securely in place. Test the key fob’s response by pressing buttons, check if it can lock/unlock the car, and test the range from different distances. Regularly test to detect any issues early.