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 key fob battery. If your key fob isn’t working anymore, feel free to bring it into the Mercedes-Benz Durham Service Center 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, this is a pretty simple job you can do yourself. So, we’ve put together this handy guide on how to change the battery in a Mercedes key fob.

How to Change the Battery in Mercedes Key Fobs (Chrome Keys)

Chrome Model with Round Red Button

Battery type – CR2025 (2)

  • Step 1 – Release the metal key by sliding the black tab to the right.
  • Step 2 – Take the metal key out of the fob.
  • Step 3 – Insert the metal key into the narrow end of the slot on the fob.
  • Step 4 – Slide the battery compartment out and remove the Mercedes key fob batteries.
  • Step 5 – Slide the new batteries in.
  • Step 6 – Slide the battery compartment back into the fob.
  • Step 7 – Return the metal key to its place (push until it locks in place).

Chrome Model with Triangular Red Button

Battery type – CR2025 (1)

  • Step 1 – Release the metal key by sliding the black tab to the right.
  • Step 2 – Take the metal key out of the fob.
  • Step 3 – Insert the metal key into the narrow end of the slot on the fob.
  • Step 4 – Pry off the back cover with the metal key.
  • Step 5 – Pry out the battery with a flat head screwdriver.
  • Step 6 – Install the new Mercedes key fob battery.
  • Step 7 – Return the back cover and metal key to their places in the fob.

How to Change the Battery in Mercedes Key Fobs (Smart Keys)

Smart Key Models

Battery type – CR2025 (2)

  • Step 1 – Locate the black latch at the bottom of the fob and pull it down.
  • Step 2 – Slide the metal key out.
  • Step 3 – Slide the metal key sideways into the fob until it triggers the latch
  • Step 4 – Remove the battery compartment.
  • Step 5 – Remove the old batteries and replace with the new Mercedes key fob batteries.
  • Step 6 – Place the battery compartment and metal key back into the fob.

Check Out Our Reasonably-Priced Mercedes-Benz Service Cost

Folks from Oshawa to Markham and beyond trust us with their vehicles. We don’t take advantage of our customers when it comes to Mercedes-Benz service. Costs of repairs and maintenance are always reasonably priced and we offer unbeatable parts specials for additional savings. And we make getting your car serviced easy. You can even schedule service online. So, contact us today!

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1-877-301-7866.

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Mercedes-Benz Durham 43.8740332, -78.9083377.