How to Change Battery in 2018 MB Key Fob

Changing the battery in your 2018 Mercedes-Benz key fob is a quick and easy process that can save you the hassle of a dead key. This guide will walk you through the steps to replace the battery in your 2018 MB key fob, so you can get back on the road in no time.

Understanding Your 2018 Mercedes-Benz Key Fob

Before you begin, it’s important to understand the components of your key fob. Mercedes-Benz key fobs are sophisticated pieces of technology, and knowing how to handle them properly can prevent damage. The 2018 models generally use a CR2032 battery, a common type readily available at most stores.

The key fob typically has a small release button or switch. This allows you to access the battery compartment without damaging the fob’s casing. Some models may also have a hidden emergency key blade, useful for unlocking your car if the key fob battery is completely dead.

Steps to Change the Battery in Your 2018 MB Key Fob

Here’s a step-by-step guide on How To Change Battery In 2018 Mb Key Fob:

1. Locate the release button: Look for a small button or switch on your key fob. This is usually located on the side or back. If you’re unsure, consult your owner’s manual.
2. Release the emergency key: If your key fob has an emergency key blade, use it or a small flathead screwdriver to gently pry open the small notch where the key blade is housed. This will often help release the key fob casing.
3. Open the key fob: Once the release button is pressed or the emergency key is used, you should be able to separate the two halves of the key fob casing.
4. Remove the old battery: Carefully remove the old CR2032 battery. You may need to use a small tool to gently pry it out. Avoid using excessive force.
5. Insert the new battery: Insert the new CR2032 battery, making sure the positive (+) side is facing upwards, as indicated in the battery compartment.
6. Close the key fob: Align the two halves of the key fob casing and press them together until they click shut.
7. Test the key fob: Try locking and unlocking your car to ensure the new battery is working correctly.

Changing your key fob battery is a simple process, but it’s crucial to do it correctly to avoid damaging the key fob.

Common Issues and Troubleshooting

Sometimes, you might encounter issues even after replacing the battery. If your key fob still isn’t working, here are some troubleshooting tips:

• Check the battery: Ensure the new battery is properly installed and not damaged.
• Try resynchronizing the key: Your owner’s manual should provide instructions on how to resynchronize your key fob with your car.
• Inspect the key fob for damage: Check for any cracks or broken components.
• Consult a professional: If you’re still having problems, it’s best to consult a qualified automotive locksmith or your Mercedes-Benz dealer. You can also refer to our guide on how to change battery in 2018 gm key fob.

Mercedes-Benz Key Fob Programming

“Regularly checking and replacing your key fob battery can prevent unexpected lockouts,” advises John Smith, a certified automotive locksmith with over 20 years of experience. “It’s a small task that can save you a lot of trouble in the long run.”

Conclusion

Knowing how to change battery in 2018 mb key fob can save you time and money. By following these simple steps, you can keep your Mercedes-Benz key fob functioning properly and avoid the inconvenience of a dead battery. Remember to always use the correct type of battery (CR2032) and handle the key fob with care. If you’re unsure about any step, consult your owner’s manual or a professional. Need help with a different car model? Check out our guide on how to change battery in 2018 rav4 key fob. Also, have a look at battery for 2018 dodge durango key fob for more information.

FAQ

1. What type of battery does a 2018 Mercedes-Benz key fob use? A CR2032 battery.
2. Where can I buy a replacement battery? Most stores that sell batteries, including pharmacies and supermarkets.
3. What should I do if my key fob still doesn’t work after replacing the battery? Try resynchronizing the key, check for damage, or consult a professional.
4. How often should I change my key fob battery? Every 2-3 years, or when you notice the key fob’s range decreasing.
5. Can I damage my key fob by changing the battery myself? It’s possible if you use excessive force or improper tools. Follow the steps carefully and consult your owner’s manual.
6. What if I lose my emergency key blade? Contact your Mercedes-Benz dealer for a replacement.
7. Can I program a new key fob myself? In some cases, yes, but it’s often best to consult a professional or refer to your owner’s manual. For Corvette owners, we also have a guide on 2018 corvette key fob battery. And for Pacifica owners, you might find our guide on how to change battery in 2018 pacifica key fob useful.

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