Introduction
Replacing the key fob battery for your BMW 7 Series from 2008 to 2015 is a straightforward process. This guide will walk you through the steps necessary to change the battery in your trapezoid-style key fob. Whether you own a 730iLi, 740iLi, 750iLi, 760iLi, ActiveHybrid7, ActiveHybrid7L, Alpina B, 730d, 740d, or 750d, this guide will help you replace the battery efficiently.
- Pack of 2 batteries
- Lithium coin batteries for watches and electronic devices
- Has a power of 3 volts
Required Tools and Materials
- CR2450 Coin Battery
- Flathead screwdriver
- Nail clippers (optional)
Step-by-Step Instructions
Step 1: Remove the Valet Key
First, flip over your key fob. You’ll find a small button on the back. Press this button to release the valet key. Remove the valet key from the key fob.
Step 2: Access the Battery Compartment
With the valet key removed, locate the small hole on the longer side of the trapezoid. Insert the valet key into this hole. This action will help you pop off the back cover of the key fob, revealing the battery compartment.
Step 3: Remove the Old Battery
Once the back cover is off, you will see the old battery. Use a small flathead screwdriver or nail clippers to carefully pry out the old battery. Be gentle to avoid damaging the internal components of the key fob.
Step 4: Insert the New Battery
Take your new CR2450 coin battery and place it into the battery compartment. Make sure the positive side is facing up. Press it firmly into place to ensure it’s secure.
Step 5: Reassemble the Key Fob
After inserting the new battery, place the back cover back onto the key fob. Press it down until it snaps into place. Finally, reinsert the valet key into its original position.
- Pack of 2 batteries
- Lithium coin batteries for watches and electronic devices
- Has a power of 3 volts
Tips for a Successful Battery Replacement
- Make sure you have the correct battery type: CR2450.
- Handle the key fob and battery with care to avoid damage.
- Keep a small flathead screwdriver handy for easy battery removal.
Common Issues and Troubleshooting
Key Fob Not Responding
If your key fob does not respond after replacing the battery, double-check to ensure the new battery is installed correctly. The positive side should be facing up. If the issue persists, consider cleaning the battery contacts with a dry cloth.
Battery Drains Quickly
If you notice that the new battery drains quickly, there may be an issue with the key fob itself. In such cases, it might be best to consult a professional for further inspection.
FAQ
How often should I replace the key fob battery?
Typically, the key fob battery should last between one to two years. However, if you notice a decrease in range or intermittent functionality, it’s a good idea to replace the battery sooner.
Is it necessary to reprogram the key fob after battery replacement?
No, replacing the battery does not require reprogramming the key fob. Once the new battery is installed, the key fob should function as usual.
What should I do if the key fob is still not working after battery replacement?
If the key fob is still not working, ensure the battery is installed correctly and the contacts are clean. If the problem persists, consider consulting a professional for further assistance.
Can I use a different type of battery?
It’s recommended to use the specified CR2450 coin battery for optimal performance. Using a different type of battery may result in improper functionality or damage to the key fob.
- Pack of 2 batteries
- Lithium coin batteries for watches and electronic devices
- Has a power of 3 volts
Conclusion
Replacing the battery in your BMW 7 Series key fob is a simple task that can be done in just a few minutes. By following the steps outlined in this guide, you can ensure that your key fob remains functional and reliable. Always use the specified CR2450 coin battery for the best results, and handle the key fob with care to avoid any damage.
Additional Resources
For more detailed information and visual guides, you can visit the full guide at BMW 7 Series Key Fob Battery Replacement Guide. Also, you can purchase the CR2450 coin battery through this link.
Maintaining your key fob ensures that you always have access to your vehicle without any interruptions. Regularly check the battery status and replace it as needed to keep your BMW 7 Series running smoothly.