Replacing the battery in your 2011 Mercedes E350 key fob is a simple task that can save you time and money. This guide will walk you through the process step-by-step, covering everything from identifying the correct battery type to safely reassembling your key fob. Whether you’re a seasoned DIYer or a first-time key fob tinkerer, you’ll find the information you need to get your key back in working order.
If your key fob is starting to act up—maybe the range is decreasing or the buttons are becoming less responsive—it’s likely time for a 2011 Mercedes E350 Key Fob Battery Replacement. Don’t worry, it’s a common issue. You can easily handle this at home without needing a trip to the dealership. You can learn more about Mercedes key fobs here: 2011 mercedes e350 key fob.
Identifying the Correct Battery
Before you start, you’ll need to know what type of battery your key fob uses. The 2011 Mercedes E350 key fob typically requires a CR2025 3V lithium battery. These are readily available at most electronics stores, pharmacies, and online retailers. It’s always best to double-check your owner’s manual to confirm the correct battery type.
Tools You’ll Need
The tools you’ll need are minimal and likely already in your household. You’ll need a small flat-head screwdriver or a similar tool to pry open the key fob. A small plastic pry tool is also recommended to avoid scratching the key fob housing.
Tools Needed for Key Fob Battery Replacement
How to Replace the Battery in Your 2011 Mercedes E350 Key Fob
Follow these simple steps to replace the battery in your 2011 Mercedes E350 key fob:
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Locate the release button: There’s a small release button on the side of your key fob. Press this button to release the valet key.
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Use the valet key: Insert the valet key into the slot on the side of the key fob and gently twist to separate the two halves of the key fob casing.
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Remove the old battery: Once the key fob is open, you’ll see the battery. Carefully pry it out using your flat-head screwdriver or plastic pry tool.
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Install the new battery: Insert the new CR2025 battery, making sure the positive (+) side is facing up.
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Reassemble the key fob: Align the two halves of the key fob casing and press them together until they click securely into place.
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Test the key fob: Try locking and unlocking your car to ensure the new battery is working correctly.
Need help opening your Mercedes key fob? Find a detailed guide here: how to open key fob mercedes.
Steps to Replace Key Fob Battery
Common Issues and Troubleshooting
Sometimes, even after replacing the battery, your key fob might not work. Here are some common issues and how to troubleshoot them:
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Key fob still not working: Try resynchronizing your key fob with your car. Consult your owner’s manual for instructions on how to do this.
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Key fob works intermittently: Check the battery contacts for corrosion. Clean them with a cotton swab and rubbing alcohol if necessary.
Conclusion: Keeping Your 2011 Mercedes E350 Key Fob in Top Shape
Replacing the battery in your 2011 Mercedes E350 key fob is a straightforward process. By following these steps, you can save yourself a trip to the dealership and keep your key fob functioning perfectly. Remember to always double-check your owner’s manual for specific instructions related to your vehicle.
New CR2025 Battery
FAQs
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How long does a key fob battery last? Typically, a key fob battery lasts between 3 and 4 years.
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Can I use a different type of battery? It’s best to use the recommended CR2025 3V lithium battery. Using a different type might not work correctly.
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What if my key fob still doesn’t work after replacing the battery? Try resynchronizing the key fob or checking the battery contacts for corrosion.
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Where can I buy a replacement battery? CR2025 batteries are widely available at electronics stores, pharmacies, and online retailers.
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Is it difficult to replace the battery myself? No, it’s a simple process that most people can do at home.
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How do I know if my key fob battery is low? Decreased range and unresponsive buttons are common signs of a low battery.
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Can I damage my key fob by replacing the battery myself? As long as you follow the instructions carefully and use the appropriate tools, you shouldn’t damage your key fob.
Reassembled Key Fob
Common Situations and Questions
- My key fob won’t unlock my car even after replacing the battery. This could indicate a programming issue. You might need to have your key fob reprogrammed by a qualified technician.
- The buttons on my key fob are sticking. This could be due to dirt or debris. Try cleaning the buttons with a soft cloth.
Further Assistance
Need more help? Check out our website for more articles and resources on Key Fob Programming and other automotive topics.
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