BMW key fobs, like many other electronic devices, rely on batteries to function. Over time, these batteries will deplete and need to be replaced. Replacing the battery in a BMW key fob is a relatively simple task that can be done in a few minutes with the right tools and materials. In this article, we will provide you with step-by-step instructions on how to change a BMW key fob battery.
Before you begin, you will need to gather a few tools and materials. These include a small Phillips head screwdriver, a new CR2032 battery, and a soft cloth. Once you have gathered your materials, you are ready to begin the process of replacing the battery in your BMW key fob.
The first step is to locate the battery compartment. The battery compartment is usually located on the back of the key fob. Once you have located the battery compartment, use the Phillips head screwdriver to remove the screws that hold it in place. Once the screws are removed, you can carefully lift the battery compartment away from the key fob. Next, remove the old battery from the battery compartment and insert the new battery in its place. Make sure that the positive side of the battery is facing up. Finally, replace the battery compartment and tighten the screws to secure it in place.
Troubleshooting Key Fob Battery Issues
Step 1: Check the Battery
The first step is to check the battery. Remove the battery from the key fob and inspect it for any signs of damage or corrosion. If the battery is damaged, it will need to be replaced.
Step 2: Clean the Battery Contacts
If the battery is not damaged, the next step is to clean the battery contacts. Use a cotton swab dipped in rubbing alcohol to clean the contacts on the battery and the inside of the key fob. This will help ensure a good connection between the battery and the key fob.
Step 3: Reseat the Battery
Once the battery contacts are clean, reseat the battery in the key fob. Make sure that the battery is properly aligned and that the positive and negative terminals are facing the correct way.
Step 4: Test the Key Fob
After you have replaced the battery, test the key fob to make sure that it is working properly. Try locking and unlocking the car, and make sure that the key fob is able to start the car. If the key fob is not working properly, you may need to replace it.
Step 5: Other Possible Causes
If you have tried the above steps and the key fob is still not working, there may be another issue causing the problem. Some other possible causes include:
| Possible Issue | Solution |
|---|---|
| Dead key fob | Replace the key fob |
| Faulty key fob receiver | Contact a BMW dealer |
| Interference from other devices | Move the key fob away from other electronic devices |
How to Change a BMW Key Fob Battery
Replacing the battery in a BMW key fob is a simple process that can be completed in a few minutes. Follow these steps to change the battery:
- Press the button on the back of the key fob to release the key.
- Gently pull the two halves of the key fob apart.
- Replace the old battery with a new CR2032 battery.
- Snap the two halves of the key fob back together.
- Insert the key back into the key fob and press the button to lock it.
People Also Ask
How long does a BMW key fob battery last?
The battery in a BMW key fob typically lasts for 2-3 years.
What are the symptoms of a dead BMW key fob battery?
The symptoms of a dead BMW key fob battery include:
- The key fob does not work.
- The key fob has a weak signal.
- The key fob does not unlock the car.
- The key fob does not start the car.
