How to Replace the Key Fob Battery in a BMW 7 Series (2016-2019)

Introduction

Replacing the key fob battery in your BMW 7 Series is a straightforward process. This guide covers models from 2016 to 2019, including various configurations such as the 730i, 740i, 750i, and more. Follow these steps to ensure your key fob remains operational.

Materials Needed

Before you start, gather the necessary materials. You will need a CR2032 three-volt battery and a small tool like a flathead screwdriver or even the valet key itself.

• CR2032 battery
• Small flathead screwdriver

Step 1: Remove the Valet Key

The first step is to remove the valet key from the key fob. Locate the button on the side of the key fob and press it to release the valet key. Once removed, set it aside.

Step 2: Open the Key Fob

Next, flip the key fob over. Near the valet key slot, you will see a small indentation. This is where you can insert a small flathead screwdriver or even the valet key to gain leverage and pop off the back cover of the key fob.

Step 3: Remove the Old Battery

With the back cover removed, you will have access to the internal battery. The battery is held in place by small prongs. Carefully pop the old battery out by getting in between these prongs. Be mindful of the small springs that may be present.

Step 4: Insert the New Battery

Now it’s time to insert the new CR2032 battery. Place the battery in the compartment, starting at the bottom, and then pop it into place. Ensure it is secure and properly seated.

Step 5: Replace the Back Cover

With the new battery in place, you can now replace the back cover. Align the two teeth at the base of the cover with the corresponding slots on the key fob. Once aligned, snap the cover back into place.

Step 6: Reinsert the Valet Key

The final step is to reinsert the valet key into the key fob. Slide it back into its slot until it clicks securely. Your key fob is now ready to use with a fresh battery.

Conclusion

Replacing the key fob battery in your BMW 7 Series is a simple task that can be completed in just a few minutes. By following these steps, you can ensure your key fob remains functional and ready to use.

FAQ

What type of battery does the BMW 7 Series key fob use?

The BMW 7 Series key fob uses a CR2032 three-volt battery.

How often should I replace the key fob battery?

It’s recommended to replace the key fob battery every 1-2 years, or when you notice a decrease in the key fob’s range or responsiveness.

Can I use any brand of CR2032 battery?

Yes, any brand of CR2032 battery will work, but it’s best to use a reputable brand to ensure longevity and reliability.

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

If your key fob doesn’t work after replacing the battery, ensure the battery is properly seated and the back cover is securely in place. If the issue persists, consult your vehicle’s manual or contact a BMW dealership for further assistance.

Is it possible to damage the key fob while replacing the battery?

While the process is straightforward, it’s important to handle the key fob and battery with care to avoid damaging the internal components. Using the appropriate tools and following the steps carefully will minimize the risk of damage.

Can I replace the key fob battery myself, or should I go to a professional?

Replacing the key fob battery is a simple task that can be done at home. However, if you’re uncomfortable doing it yourself, a professional can help you.

How do I know if my key fob battery is low?

Signs of a low key fob battery include reduced range, unresponsive buttons, and a warning message on your vehicle’s dashboard.

Will replacing the battery affect the key fob’s programming?

No, replacing the battery will not affect the key fob’s programming. The key fob will retain its settings and functionality after the battery is replaced.

What should I do with the old battery?

Dispose of the old battery properly by taking it to a recycling center or following your local guidelines for battery disposal.

Can I use a rechargeable battery in my key fob?

It’s not recommended to use a rechargeable battery in your key fob, as they may not provide the consistent voltage required for optimal performance.