How To Change Your Mercedes-Benz Key Battery

Mercedes-Benz Key Fob on Table


Your Mercedes-Benz key fob runs on a battery, and like all batteries, it will eventually wear out and need replacing. There are a few warning signs to keep an eye out for that indicate your battery is dying – we’ve outlined those below. We also have all the details on how to replace the battery in your Mercedes-Benz key fob when the time comes – it’s easier than you might think, but the process varies slightly depending on the kind of key you have. Learn more about the Mercedes-Benz service cost and key fob battery replacement today with the service team at Mercedes-Benz of Modesto!



When a Mercedes-Benz Key Fob Battery Needs Replacement

If you spot any of the following warning signs with your Mercedes-Benz while driving around Modesto, then it’s probably time to replace the battery in your Mercedes-Benz key fob.

  • Your vehicle is more difficult to start than usual, sometimes taking several tries with the key fob to get it started.
  • You lose the ability to use the lock, unlock, or panic buttons on your key fob.
  • You see a warning light on your dashboard indicating a problem with the charging system.

If you notice any of these warning signs, start taking steps to replace your Mercedes-Benz key fob battery as soon as possible before more serious issues start happening on the Merced roads.

How to Replace Your Mercedes-Benz Key Fob Battery

When it’s time to replace your Mercedes-Benz key battery for your Stockton vehicle, the steps you take depend on the kind of key you have. The first thing you want to do is determine the type of key fob – a newer Chrome SmartKey® or an older SmartKey®.

  • If you have a Chrome SmartKey®, you’ll need one CR2025 battery. If you have an older SmartKey®, you’ll need two batteries.
  • For the Chrome SmartKey®: Pull the tab at the bottom, push the key into the narrow end of the slot to remove the outside cover, then replace the battery inside.
  • For the older SmartKey®: Pull the latch at the end of the key holder, push the key horizontally into the open slot, lift the battery out of the inner compartment, and replace it.

Discover More Mercedes-Benz Service at Mercedes-Benz of Modesto

If you don’t want to DIY a Mercedes-Benz key battery replacement, our service team can take care of everything for you. To learn more about the services we offer and our Mercedes-Benz service costs, feel free to contact our office anytime. You can also stop by our service center near Stanislaus to talk to a service expert in person. And don’t forget to check out our service specials if you’re looking for an incredible offer on your next appointment!


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