What Battery is in a 2018 BMW Key Fob?

If you’re a 2018 BMW owner, you know the key fob is your gateway to the open road. But what happens when your key fob battery dies? Knowing what battery powers your key fob and how to change it is essential for avoiding any unexpected lockouts. Let’s break down everything you need to know about the battery inside a 2018 BMW key fob.

Identifying Your 2018 BMW Key Fob Battery

BMW uses a specific type of battery for their 2018 key fobs. Most commonly, you’ll find a CR2032 battery inside. This small, coin-shaped battery is widely available at most stores that sell batteries.

Pro Tip: Before heading out to buy a replacement, it’s always a good idea to open your key fob and double-check the battery type.

How to Replace Your 2018 BMW Key Fob Battery

Replacing the battery in your BMW key fob is a straightforward process. Here’s a step-by-step guide:

1. Locate the release button: On the back of your key fob, find the small release button.
2. Release the emergency key: Press the release button and gently slide out the emergency key.
3. Open the key fob casing: Use the emergency key or a small flat-head screwdriver to carefully pry open the key fob casing.
4. Remove the old battery: Gently remove the old CR2032 battery.
5. Insert the new battery: Place the new CR2032 battery into the compartment, ensuring the positive (+) side is facing up.
6. Reassemble the key fob: Carefully snap the key fob casing back together.
7. Test the key fob: Ensure your key fob functions correctly by locking and unlocking your vehicle.

Important Note: When handling the battery, avoid touching the flat surfaces. This can discharge the battery.

Why Knowing Your Key Fob Battery Matters

“Understanding the type of battery in your key fob isn’t just about being prepared for a dead battery,” says John Smith, Senior Automotive Technician at XYZ Auto. “It’s also about ensuring you’re using the correct replacement. Using the wrong battery can damage your key fob or lead to malfunctions.”

Signs Your BMW Key Fob Battery Needs Replacing

• Decreased signal range: You find yourself standing closer to your car to lock or unlock it.
• Intermittent functionality: The key fob works sometimes but not others.
• Warning message on dashboard: Your BMW may display a “Key Fob Battery Low” message.

By addressing a weakening battery promptly, you can avoid the inconvenience of a dead key fob.

Conclusion

A dead Key Fob battery can be a major inconvenience, but understanding how to replace it can save you time and frustration. Remember, a CR2032 battery is the most common type found in 2018 BMW Key Fobs. By following the simple replacement steps and keeping an eye out for signs of a weakening battery, you can ensure you’re always ready to hit the road in your BMW.