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

Mercedes-Benz Key Fob on Table

In need of a Mercedes-Benz key fob battery replacement? Mercedes-Benz of Hampton explains how to tell when you need a key fob battery replacement, how to open your Mercedes-Benz key fob, and how to change the battery in your Mercedes-Benz key fob. Remember that the experts at the Mercedes-Benz of Hampton service center have you covered on all things related to your key fob!

Mercedes-Benz Key Fob Battery Replacement: Step-by-Step

The steps for actually changing the battery in your Mercedes-Benz key fob are fairly simple, though you do need to know ahead of time whether your key is a Chrome SmartKey® or an older SmartKey®. Once you know what kind of key you have, just follow these steps:

How to Replace the SmartKey® Battery for Older Mercedes-Benz Models

To replace your Mercedes-Benz key fob battery in an older SmartKey®:

  1. Pull the latch at the end of the key holder.
  2. Push your key horizontally into the open slot.
  3. Then lift the battery out of the compartment and replace it with your new key fob battery.

How to Replace the Chrome SmartKey® Battery for Newer Mercedes-Benz Models

To replace your Mercedes-Benz key fob battery in a newer Chrome SmartKey®:

  1. Pull the tab at the bottom.
  2. Remove the cover by pushing the key into the narrow end of the slot.
  3. Then remove the old battery and replace it with your new key fob battery.

When to Replace Your Mercedes-Benz Key Fob Battery

If you notice any of these warning signs while driving around Williamsburg, it might be time to change the battery in your Mercedes-Benz key fob. Initial warning signs can include:

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

So that you don’t get stranded, take the proactive step and change the battery in your Mercedes-Benz key fob before there are further issues.

What Type of Battery Does My Mercedes-Benz Key Fob Need?

The newer Mercedes-Benz Chrome SmartKey® calls for one CR 2025 battery while the older SmartKey® calls for two. You can order your battery online from our parts center!

Enjoy Expert Mercedes-Benz Service at Mercedes-Benz of Hampton

Feel more comfortable with a professional replacing your key battery? Schedule service at our Mercedes-Benz service center in Hampton! If you have any questions, feel free to call us at 757-251-2778, and be sure to check our service specials before you book your appointment. Looking for more service information? Learn about what the price of Mercedes-Benz Service B includes at Mercedes-Benz of Hampton!

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