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

Mercedes-Benz Key Fob on Table

Have you noticed that your Mercedes-Benz key fob is on its last legs? The service experts at Mercedes-Benz of Centerville will replace the Mercedes-Benz key fob and get you back out on the Kettering roads. Want to change the key fob battery yourself? We can show you how! Follow our handy guide to replacing your Mercedes-Benz key fob battery to help avoid the Mercedes-Benz service cost.

When Should I Replace a Mercedes-Benz Key Fob Battery?

There are multiple warning signs to watch out for when it may be time to replace your Mercedes-Benz key fob battery. Warning signs include:

  • You may notice your vehicle is more difficult to start. If it takes several minutes or multiple attempts, this can be another sign of a low battery.
  • If you can no longer lock and unlock your doors or set off the panic alarm, that can also be a sign your battery is on the way out.
  • If there’s a warning sign on your dashboard indicating that you’re losing battery power in your key fob.

If you experience any of these warning signs, take the necessary steps to change the Mercedes-Benz key fob battery. This will also prevent any issues on the road in Springboro.

Replacing Your Mercedes-Benz Key Fob Battery

When changing your Mercedes-Benz key fob battery, follow these simple steps below:

  • Determine Your Key Type: Whether you have a newer Chrome SmartKey® or an older SmartKey®, the key type impacts how you’re going to change the battery.
  • Get the Right Batteries: The newer Chrome SmartKey® requires one CR 2025 battery, while the older SmartKey® requires two.
  • SmartKey® for Older Models: Replace the battery in your key fob by pulling the latch at the end of the key holder, push your key horizontally into the open slot, and then lift the battery out of the compartment.
  • Chrome SmartKey® for Newer Models: Pull the tab at the bottom, remove the cover by pushing the key into the narrow end of the slot, and place the battery inside.

Explore Mercedes-Benz Service Costs at Mercedes-Benz of Centerville!

Whether you have questions about changing your Mercedes-Benz key fob battery or specific Mercedes-Benz service costs, we can help answer your questions. Feel free to contact us at our Centerville service center with any questions. Be sure to explore our current selection of service specials before visiting us from the Oakwood area.


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Mercedes-Benz of Centerville 39.648865, -84.156982.