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

If the battery of your Mercedes-Benz key fob is dying, it’s good to know what to look for, and how to replace the key fob battery. Learn how to change the battery in the key fob of your Mercedes-Benz and keep your luxury vehicle running smoothly.

How to Change the Battery in a Key Fob

So you’ve noticed that your Mercedes-Benz key fob battery needs to be replaced. Here’s the rundown as to how to change your Mercedes-Benz key fob battery.

• Determine Your Key Type: You may have either a Chrome Key or a Smart Key depending on the year and model of your Mercedes-Benz. Your key type ultimately impacts how the batteries ought to be changed. For more details on your specific model, please refer to your maintenance booklet.
• Get the Right Batteries: A Smart Key needs two CR 2025 batteries. A new Chrome Key only needs one.
• Smart Key: For the Smart Key, pull the latch at the end of the key holder, stick your key horizontally into the open slot, and lift the battery compartment out. Then, insert your batteries.
• Chrome Key: When changing a Chrome Key battery, you’ll want to pull on the tab at the bottom, push the key into the narrow end of the slot to remove the cover, and replace the battery.

When Do I Need to Change My Mercedes-Benz Key Fob Battery?

There are several warning signs to remember when it’s time to change the battery in your key fob. Initial warning signs include:

• You may notice that your C-Class or E-Class is difficult to start. If your vehicle takes multiple attempts to start, chances are your key fob battery needs to be replaced.
• If you’re no longer able to lock or unlock your doors or set off the panic alarm, chances are your Mercedes-Benz key fob battery needs to be replaced.
• If the warning sign on your dashboard indicates an issue with the charging system, the battery power in your Mercedes-Benz key fob should get replaced.

Have you noticed any of these warning signs? Be proactive and change your Mercedes-Benz key fob battery before you head to your favorite arts venue in Modesto, CA.

Get Help With Your Mercedes-Benz Key Fob Battery in Modesto!

Need help with how to change the battery in your key fob? Our Modesto service center will help you when you bring your vehicle in for scheduled services. Feel free to contact us with any questions and make sure you check out our service specials before scheduling maintenance and service for your Mercedes-Benz.