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

From time to time, your Mercedes-Benz key fob battery will need to be replaced. While you can always stop by the service center at Mercedes-Benz of St. George for help, you can also learn how to change the battery in your Mercedes-Benz key fob at home. Most Mesquite and Santa Clara drivers find that the task is relatively straightforward, and our parts department can help you find the right replacement battery for your specific vehicle. Find out how to change your key fob battery in a few simple steps, and get more service tips at Mercedes-Benz of St. George.

When to Replace Your Mercedes-Benz Key Fob Battery

Your Mercedes-Benz key fob battery will give off signals when it’s weakening, so if you pay attention, you can avoid the stress of a dead battery completely. Here are some of the initial warning signs that you may notice:

• Car Starts Slow: If it takes you multiple attempts or several minutes to get your car started, this might mean that your battery is low.
• Features Don’t Work: If you can’t lock and unlock your doors or use the panic alarm, this means your battery lacks the power to activate these features.
• Charging System Lights: If you see a dashboard warning sign alerting you to a charging system issue, this can mean that you’re losing battery power in your key fob.

Because it’s quick and inexpensive to change your key fob battery, we recommend being proactive. If you change your battery when you notice the initial warning signs of a weakened battery, you’ll avoid the hassle of dealing with a dead fob on a busy morning in Hurricane!

How to Replace Your Mercedes-Benz Key Fob Battery

You can visit our dealership and get your key fob replaced for a modest Mercedes-Benz service cost, but you can also handle the job at home. However, there are several types of key fob on the market. Here is a brief rundown of the two most common types:

• Determine Your Key Type: First, determine whether you have the newer Chrome SmartKey® or an older SmartKey®.
• Get the Right Batteries: The newer Chrome SmartKey® uses one CR 2025 battery while the older SmartKey® calls for two.
• SmartKey® for Older Models: 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.
• Chrome SmartKey® for Newer Models: Pull the tab at the bottom, remove the cover by pushing the key into the narrow end of the slot, then place the battery inside.

Explore Mercedes-Benz Service Costs at Mercedes-Benz of St. George

Interested in ordering a new battery? Want a quote for your next Mercedes-Benz service cost? The service team at Mercedes-Benz of St. George is happy to be of service in the St. George area. Contact us with any questions about your Mercedes-Benz vehicle and schedule your service today!