How to Do a Mercedes-Benz Key Fob Battery Replacement

Black modern car door opener and keyless entry device with thumb pressing lock

Are you starting to notice that your Mercedes-Benz key fob battery is on its last legs? The Mercedes-Benz service experts at Mercedes-Benz of West Chester are here to assist with your key fob issues. Learn how to handle a Mercedes-Benz key fob battery replacement right at home. Don’t hesitate to reach out to our service department if you have any questions along the way.

When a Mercedes-Benz Key Fob Battery Needs Replacement

There are multiple warning signs to look for when it seems that the Mercedes-Benz key fob battery is about to go. Those initial warnings can include:

  • Your vehicle becomes more difficult to start, and it takes several minutes or multiple attempts.
  • Being unable to lock and unlock your doors or set off the panic alarm is another sign that your battery is on its last legs. 
  • There’s a warning sign on your dashboard indicating an issue with the charging system.

It’s essential to have your Mercedes-Benz key fob battery replaced to prevent any problems while out on the roads in Cincinnati.

How to Replace Your Mercedes-Benz Key Fob Battery

When you need to handle the Mercedes-Benz key fob battery replacement, there are a few quick and easy steps to follow: 

  • Determine Your Key Type: Whether you have a newer Chrome SmartKey® or an older SmartKey®, the key type impacts how the batteries need to be changed. 
  • Get the Right Batteries: The newer Chrome SmartKey® calls for one CR 2025 battery, while the older SmartKey® calls for two.
  • SmartKey® for Older Models: To replace theMercedes-Benz key fob battery, pull 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, then place the battery inside.

Get Additional Mercedes-Benz Service Tips Near Oxford!

Need additional help with the Mercedes-Benz key fob battery replacement? Our service team is here to help! Feel free to contact our service center with any questions or to schedule a service appointment. Be sure to check out our service specialsto use on your next visit.

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5897 Muhlhauser Rd • West Chester, OH 45069

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Mercedes-Benz of West Chester 39.3196347, -84.4292915.
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