Replacing the battery in your BMW key fob is a simple and essential maintenance task that ensures your key fob continues to function properly. Over time, the battery in your key fob may lose charge, leading to reduced range or an inability to unlock or start your vehicle. By following a few straightforward steps, you can replace the battery yourself without the need for professional assistance.
This guide on how to replace battery in bmw key fob will help you swap out the old battery and have your BMW key fob working like new in no time.
Identify Your BMW Key Fob Type
Before replacing the battery, it’s crucial to determine which type of BMW key fob you have, as the battery type and replacement process may vary. BMW vehicles commonly use three types of key fobs:
Comfort Access Key Fob:
This fob allows for keyless entry and ignition. You can unlock your car or start the engine without physically pressing a button, as long as the fob is in your possession.
Standard BMW Key Fob:
This fob requires pressing buttons to lock, unlock, or open the trunk of your vehicle. It does not offer keyless ignition features.
Display Key:
A modern and advanced fob with a built-in touchscreen that provides additional vehicle information such as range, fuel levels, and more.
Once you’ve identified your key fob type, you can proceed with selecting the correct battery and following the appropriate replacement steps tailored to your specific fob.
Tools and Materials Needed:
- Replacement Battery (Specific to Your Key Fob Type)
- Small Screwdriver or Prying Tool
- Cleaning Cloth or Alcohol Wipes (Optional)
6 Steps on How to Replace Battery in Bmw Key Fob
Step 1: Find the Release Button on Your Key Fob
Locate the release button on your BMW key fob. This button is typically found on the back or side of the fob, depending on the model.
Pressing this button will allow you to access the battery compartment or release the mechanical key, which can help in opening the fob for battery replacement. Ensure you handle the key fob carefully to avoid damaging any components.
Step 2: Use a Flathead Screwdriver or Coin to Twist and Open the Key Fob
Once you have released the mechanical key or accessed the battery compartment, use a small flathead screwdriver or a coin to carefully twist open the key fob. Insert the tool into the designated slot or groove and gently apply pressure to separate the two halves of the fob.
Be cautious not to apply excessive force, as this could damage the plastic casing or internal components. Take your time to ensure a smooth and safe opening process.
Step 3: Remove the Old Battery
After opening the key fob, locate the battery, which is typically secured in a shallow compartment. Carefully observe how the old battery is positioned, noting the positive (+) and negative (-) sides for proper placement of the new battery. Use a small flathead screwdriver, a plastic prying tool, or your fingers to gently lift out the old battery.
Be cautious to avoid damaging any nearby components during this process. Once the old battery is removed, set it aside for proper disposal according to local regulations.
Step 4: Check for Corrosion or Debris
Before inserting the new battery, inspect the battery compartment for any signs of corrosion or debris. Use a soft, dry cloth or a cotton swab to gently clean the area if necessary. For stubborn debris or minor corrosion, a small amount of isopropyl alcohol on the cloth can help with cleaning.
Ensuring the compartment is clean will promote a secure connection and proper function of the key fob. Avoid using excessive force while cleaning to prevent damage to the internal components.
Step 5: Insert the New Battery
Take the new battery and carefully place it into the battery compartment, ensuring that the positive (+) side is facing the correct direction as indicated inside the compartment. Gently press the battery into place until it sits securely.
Be cautious not to apply excessive pressure, which could damage the compartment or other components. Properly seating the battery is crucial for the key fob’s optimal performance.
Step 6: Close and Test Your Key Fob
After inserting the new battery, carefully close your key fob by aligning both halves and pressing them together firmly until you hear a click. Test your key fob by pressing the buttons to ensure that it is working properly.
Following these steps on how to replace battery in bmw key fob will help ensure that your key fob continues to function without any issues. It is important to regularly check and replace the battery as needed, especially if you notice a decrease in range or responsiveness of your key fob.
Safety Tips and Warnings
When replacing the battery in your BMW key fob, it is crucial to follow some safety tips to avoid any potential issues:
Handle the Key Fob With Care:
Always handle your key fob gently to avoid damaging its internal components or the casing. Avoid using excessive force when opening or closing the key fob.
Use the Correct Battery Type:
Make sure to use the recommended battery type for your BMW key fob. Using an incompatible battery could damage the device or result in poor performance.
Keep Spare Batteries Away From Children and Pets:
Batteries can be a choking hazard or cause harm if swallowed. Always store spare batteries in a secure location that is out of reach.
Dispose of Old Batteries Properly:
Do not throw used batteries in the trash. Instead, recycle them according to local guidelines to minimize environmental impact.
Avoid Direct Contact With Battery Terminals:
When handling the battery, avoid touching the terminals with your fingers as oils or moisture may affect battery performance.
By adhering to these safety tips, you can ensure a smooth battery replacement process while protecting both yourself and your key fob.
When to Seek Professional Help?
If your key fob continues to malfunction after replacing the battery, it may indicate a more complex issue such as a damaged circuit board or a need for reprogramming. Similarly, if the battery compartment appears corroded or damaged, professional assistance is highly recommended.
Contact your vehicle’s dealership or a qualified automotive locksmith to diagnose and resolve the problem safely and effectively. Seeking professional help ensures that your key fob operates reliably and prevents potential damage to the device or your vehicle.
How Much Will It Cost?
The cost of replacing a key fob can vary depending on the make and model of your vehicle. In general, it can range from $50 to $500 or more. This price includes not only the cost of the physical key fob but also any additional programming or diagnostic fees.
If you have a spare key fob, it is always a good idea to keep it in case you lose your primary one. This can save you time and money in the event that you need a replacement.
In some cases, your vehicle’s warranty may cover the cost of a replacement key fob if it malfunctions due to manufacturer defects. Be sure to check with your dealership or read through your warranty information to see if this is the case.
However, if your key fob is lost or damaged due to negligence or user error, it will likely not be covered under warranty and you will need to pay for a replacement out of pocket.
Frequently Asked Questions
Q: How Do I Know if My Key Fob Needs to Be Replaced?
A: Some signs that your key fob may need to be replaced include malfunctioning buttons, a dead battery, or physical damage such as cracks or breaks.
Q: Can I Program a New Key Fob Myself?
A: It depends on the make and model of your vehicle. Some manufacturers offer instructions for self-programming, while others require you to go to a dealership or locksmith for programming.
Q: How Much Does It Cost to Replace a Key Fob?
A: The cost can vary greatly depending on the make and model of your vehicle, as well as where you purchase the replacement from. On average, expect to pay anywhere from $50 to $200 for a new key fob. If you go through a dealership, the cost may be higher due to added labor fees. It’s always a good idea to shop around and compare prices before making a purchase.
Q: Can I Get a Replacement Key Fob Without My Original?
A: Yes, in most cases, you can still get a replacement key fob even if you don’t have the original. However, this may require additional steps such as verifying ownership of the vehicle or providing proof of identification. It’s best to check with your chosen supplier for their specific requirements.
Conclusion
Replacing a key fob doesn’t need to be a stressful process. By understanding the options available, such as visiting a dealership or utilizing a third-party supplier, you can make an informed decision that suits your needs and budget.
Always ensure to verify the requirements and procedures with your chosen provider to avoid any unnecessary delays. With the right preparation, obtaining a replacement key fob can be a straightforward and hassle-free experience. Thanks for reading this article on how to replace battery in bmw key fob.