How to Change Battery on BMW Key Fob 2015

Changing the battery in your 2015 BMW key fob is a simple process that can save you the hassle and expense of a trip to the dealership. This guide will walk you through the steps involved in replacing the battery, ensuring your key fob remains functional.

Identifying Your BMW Key Fob and the Right Battery

Before you begin, it’s important to identify the specific type of key fob you have. BMW has used several different key fob designs over the years. The 2015 models generally utilize the rectangular key fob with a physical key blade that slides out. Knowing your key fob type ensures you purchase the correct replacement battery, typically a CR2032 3V lithium coin cell battery, easily found online or at most stores. Incorrect battery types can lead to malfunction or damage. Always double-check the owner’s manual for your specific model to confirm the recommended battery.

Gathering the Necessary Tools

You won’t need any specialized tools for this task. A small flat-head screwdriver or a similar tool for prying open the key fob casing is all you require. Some key fobs may have a small notch or designated area specifically for this purpose.

Step-by-Step Guide to Changing the BMW Key Fob Battery (2015)

1. Locate the release button: On the side of your BMW key fob, you’ll find a small button or release latch. This is usually near where the physical key blade is stored.
2. Release the key blade: Press the release button and slide the metal key blade out of the fob.
3. Open the key fob casing: Using your flat-head screwdriver, carefully insert it into the slot or notch revealed when you removed the key blade. Gently pry open the two halves of the key fob casing. Be careful not to damage the plastic.
4. Remove the old battery: Once the casing is open, you’ll see the CR2032 battery. Gently pry it out using your screwdriver or fingernail. Note the orientation of the battery for correct replacement.
5. Insert the new battery: Place the new CR2032 battery into the compartment, ensuring it’s in the same orientation as the old one. The positive (+) side should typically face upwards.
6. Close the key fob casing: Align the two halves of the key fob casing and press them firmly together until they snap shut.
7. Reinsert the key blade: Slide the metal key blade back into its slot until it clicks into place.

Testing Your Key Fob

After replacing the battery, test all the functions of your key fob, including locking/unlocking the doors, starting the engine, and activating the panic button. If any functions are not working correctly, double-check the battery installation and ensure the casing is closed securely.

What if my key fob still doesn’t work after replacing the battery?

Sometimes, the issue might not be the battery. It’s possible the key fob needs to be reprogrammed, or there could be a different underlying problem. In such cases, it’s recommended to consult a qualified automotive locksmith or your BMW dealership for further diagnosis and assistance. You may also be able to program your BMW key fob yourself. Can you program a bmw key fob? Find out more.

Conclusion

Changing the battery in your 2015 BMW key fob is a straightforward process that you can easily do yourself. This guide provides a step-by-step process to help you save money and maintain the functionality of your key fob. By following these instructions carefully, you can ensure your key fob is always ready when you need it. If you are still having problems, you can always consider finding a professional to assist with BMW key fob programming.

FAQ

1. How often should I change my BMW key fob battery? Typically, every 2-3 years, but this can vary depending on usage.
2. What type of battery does a 2015 BMW key fob use? A CR2032 3V lithium coin cell battery.
3. What do I do if my key fob still doesn’t work after changing the battery? Consult a locksmith or your BMW dealership.
4. Can I damage my key fob by changing the battery myself? It’s possible if you’re not careful, so proceed gently.
5. Where can I buy a CR2032 battery? Most stores, online retailers, and auto parts stores carry them.
6. Is it difficult to open the BMW key fob casing? Not usually, but it requires a bit of careful prying.
7. Can I use a different type of battery in my BMW Key Fob? No, always use the recommended CR2032 battery.

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