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

A new Mercedes-Benz E-Class parked on concrete

Everything wears out, including your Mercedes-Benz key fob battery. If your key fob isn’t working anymore, feel free to bring it into the Mercedes-Benz Durham Service Centre in Whitby so our team can inspect it. The Mercedes-Benz service cost for something this small is negligible, but we understand that a lot of our Toronto customers like to handle things like this on their own. Fortunately, replacing your Mercedes-Benz key fob battery is a simple job you can do yourself. Follow this handy guide on how to change the key fob battery and get yourself back on the Oshawa roads in no time!

When a Mercedes-Benz Key Fob Battery Needs Replacement

Before your key fob loses all power, there will be several warning signs that the battery is dying. Look out for warning signs such as:

  • Your vehicle becomes more difficult to start, either taking several minutes or multiple attempts.
  • You have to hit the lock/unlock buttons or the panic alarm button more than once for it to trigger.
  • A warning sign on your dashboard that indicates an issue with the charging system turns on.

If you begin to experience any of these issues, it may be time to change the battery in your Mercedes-Benz key fob.

How to Replace the Key Fob Battery for Your Mercedes-Benz

Follow these simple steps to change your Mercedes-Benz key fob battery and get back to enjoying your luxury driving experience in Markham:

  • Determine Your Key Type: There are several different types of Mercedes-Benz key fobs, from the newer Chrome SmartKey® to the older SmartKey®. What key fob you have will determine how the battery will need to be changed.
  • Get the Right Batteries: If you have a newer Chrome SmartKey®, you’ll need one CR 2025 battery. The older SmartKey® will need two.
  • SmartKey® for Older Mercedes-Benz Models: To change the battery in your key fob, 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. You can then replace the batteries once the old ones have been removed.
  • Chrome SmartKey® for Newer Mercedes-Benz Models: Pull the tab at the bottom and remove the cover by pushing the key into the narrow end of the slot. Remove the old battery and replace it with the new one.

Trust Mercedes-Benz Durham for Your Mercedes-Benz Service Needs

Whether you need help replacing your Mercedes-Benz key fob battery or you’re in need of a repair, you can trust Mercedes-Benz Durham.  Our certified service is always reasonably priced and we offer unbeatable parts specials for additional savings.  Schedule service online or contact us with any questions you may have, and our expert team will help you determine the best course of action for your Mercedes-Benz. Don’t hesitate- visit Mercedes-Benz Durham for your next routine service in Whitby!

Mercedes-Benz Durham 43.8740332, -78.9083377.