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

2019 S-Class Sedan

Is the battery in your Mercedes-Benz key fob on its way out? Learn the warning signs of a dying battery, as well as the steps to replace it yourself, with the service experts at Vin Devers Autohaus of Sylvania Mercedes-Benz


Does Your Mercedes-Benz Key Fob Battery Need Replacing? 

You may notice a few different warning signs if it’s time to replace your Mercedes-Benz key fob battery. Initial warnings can include:

  • A warning sign appears on your dashboard that indicates an issue with the charging system. This can indicate you’re losing battery power in your key fob. 
  • Your vehicle has become more difficult to start. If it takes several minutes or multiple attempts. This can be an indicator of a low battery.
  • If you lose the ability to lock and unlock your doors or set off the panic alarm that can also be a sign your battery is on the way out. 

Once these issues pop up, it’s time to take the proactive step to change the battery in your Mercedes-Benz key fob. This will prevent further issues and frustrations when on the road in Toledo. 

Mercedes-Benz Key Fob

How to Replace Your Mercedes-Benz Key Fob Battery

To replace your Mercedes-Benz key fob battery, you only need to follow a few simple steps:

  • Determine Your Key Type: The newer Chrome and older SmartKey® require a different number of batteries. 
  • Get the Right Batteries: The newer Chrome SmartKey® calls for one CR 2025 battery while the older SmartKey® calls for two.
  • Chrome SmartKey® for Newer Models: Pull the tab at the bottom, and take off the cover by pushing the key into the narrow end of the slot then place the battery inside.
  • SmartKey® for Older Models: Start 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. 

Get Help from the Vin Devers Autohaus of Sylvania Mercedes-Benz Service Center

Struggling to replace your Mercedes-Benz key fob battery? The Vin Devers Autohaus of Sylvania Mercedes-Benz service center is equipped to handle all your service needs, from quick battery replacements to larger repairs. Schedule an appointment today, or learn more about Mercedes-Benz care with our tips on how to protect your car from the sun!


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Phone: (888) 851-3324

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Vin Devers Autohaus of Sylvania Mercedes-Benz
Vin Devers Autohaus of Sylvania Mercedes-Benz
5570 Monroe Street Driveway 3
Sylvania, OH, 43560 United States
(888) 851-3324
https://di-uploads-pod1.dealerinspire.com/vindeversautohausofsylvaniamercedesbenz/uploads/2016/08/vin-devers.jpg
Vin Devers Autohaus of Sylvania Mercedes-Benz 41.7080961, -83.6681066.