How to Change the Battery in Your Mercedes-Benz Key Fob

October 14th, 2019 by

Mercedes-Benz Key

If the battery of your Mercedes-Benz key fob is dying, you’ll want to know what to look for, and you’ll want to know how to replace it. Learn how to change the battery in your Mercedes-Benz key fob to keep your Mercedes-Benz vehicle running smoothly.

How to Change the Mercedes-Benz Key Fob Battery

So you’ve noticed that your Mercedes-Benz key fob battery needs replacement. Here’s the rundown as to how to replace your Mercedes-Benz key fob battery.

  • Determine Your Key Type: You may have either a Chrome Key or a Smart Key depending on the year and model of your Mercedes-Benz vehicle. Your key type ultimately impacts how the batteries ought to be changed. For more details on your specific model, please refer to your maintenance booklet.
  • Get the Right Batteries: A Smart Key needs two CR 2025 batteries. A new Chrome Key only needs one.
  • Smart Key: For the Smart Key, pull the latch at the end of the key holder, stick your key horizontally into the open slot, and lift the battery compartment out. Then, insert your batteries.
  • Chrome Key: When changing a Chrome Key battery, you’ll want to pull on the tab at the bottom, push the key into the narrow end of the slot to remove the cover, and replace the battery.

When Do I Need to Change My Mercedes-Benz Key Fob Battery?

There are a few warning signs to keep in mind when it’s time to change the battery in your Mercedes-Benz key fob. Initial warning signs include:

  • You may notice that your C-Class or E-Class is difficult to start. If your vehicle takes several attempts to start, chances are your key fob battery needs to be replaced.
  • If you’re no longer able to lock or unlock your doors or set off the panic alarm, chances are your Mercedes-Benz key fob battery needs to be replaced.
  • If the warning sign on your dashboard indicates an issue with the charging system, the battery power in your Mercedes-Benz key fob needs to be replaced.

Noticing any of these warning signs? You’ll want to be proactive and change the battery of your Mercedes-Benz key fob before you head to your favorite arts venue in Modesto, CA.

Find Help With Your Mercedes-Benz Key Fob Battery in Modesto!

Need help replacing your key battery? Our Modesto service center will help you when you bring your vehicle in for scheduled services. Feel free to contact us with any questions and make sure you check out our service specials before scheduling maintenance and service for your Mercedes-Benz.


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