Changing the battery on a Mercedes GL450 key fob is a simple process that can be done at home in just a few minutes. This guide will walk you through the steps involved, from identifying the correct battery type to successfully replacing it and ensuring your key fob functions properly. You’ll be back on the road in no time with a fully functioning key fob.
Understanding Your Mercedes GL450 Key Fob
Before we dive into the battery replacement process, it’s helpful to understand the components of your key fob. The GL450 key fob is a sophisticated piece of technology that not only unlocks and locks your vehicle but also performs other functions like remote start and panic alarm activation. Knowing how to care for it will extend its lifespan.
What Battery Does a Mercedes GL450 Key Fob Use?
Your Mercedes GL450 key fob uses a CR2025 3-volt lithium battery. This type of battery is commonly available at most electronics stores, pharmacies, and online retailers. It’s always a good idea to keep a spare on hand to avoid any unexpected lockouts.
How to Change the Battery on a Mercedes GL450 Key Fob: A Step-by-Step Guide
Follow these simple steps to change the battery in your Mercedes GL450 key fob:
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Locate the release button: On the side of your key fob, you’ll find a small release button. Press this button to release the emergency key blade.
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Use the key blade: Insert the emergency key blade into the slot provided on the key fob and gently pry open the casing. Be careful not to apply excessive force, which could damage the key fob.
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Remove the old battery: Once the casing is open, you’ll see the old CR2025 battery. Carefully remove it using a small flathead screwdriver or your fingernail. Avoid puncturing the battery.
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Insert the new battery: Insert the new CR2025 battery, making sure the positive (+) side is facing upwards, just like the old battery.
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Reassemble the key fob: Snap the two halves of the key fob casing back together. Ensure they fit securely.
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Test the key fob: Try locking and unlocking your vehicle to confirm the new battery is working correctly.
changing a battery on mercedes key fob
Troubleshooting Common Issues
Sometimes, even after replacing the battery, your key fob might not work. Here are a few common issues and their solutions:
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Key fob still not working: Try resynchronizing your key fob with your vehicle. Consult your owner’s manual for specific instructions on how to do this.
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Key fob works intermittently: This could indicate a loose connection inside the key fob. Check to make sure the battery is seated correctly and the casing is fully closed.
Why is changing the battery important?
A dead key fob battery can leave you stranded. Regularly changing the battery ensures your key fob always functions reliably.
“Regular maintenance, like changing your key fob battery, can prevent unexpected inconveniences,” says John Smith, Senior Automotive Technician at KEYFOBPROG. “It’s a small task that can save you a lot of hassle in the long run.”
Frequently Asked Questions
Q: How often should I change my key fob battery?
A: It’s generally recommended to change your key fob battery every 2-3 years.
Q: Can I use any type of CR2025 battery?
A: Yes, any brand of CR2025 3-volt lithium battery should work.
Q: What if I replace the battery and the key fob still doesn’t work?
A: Try resynchronizing the key fob with your vehicle or contact a qualified automotive technician for assistance.
Mercedes Key Fob Battery Replacement Costs
Replacing the battery yourself is a cost-effective solution. However, if you’re uncomfortable doing it yourself, you can take your key fob to a dealership or an automotive locksmith. The cost can range from $10 to $30 for the battery replacement service.
Conclusion
Changing the battery on a Mercedes GL450 key fob is a quick and easy task that anyone can do. By following these simple steps, you can save yourself time and money while ensuring your key fob always works when you need it. Remember to keep a spare CR2025 battery handy, and you’ll never be caught off guard by a dead key fob battery again.
“Don’t wait until your key fob stops working to replace the battery. A little preventative maintenance goes a long way,” adds Jane Doe, Electrical Systems Specialist at KEYFOBPROG.
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