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

Does it take five clicks of the lock button to lock or unlock your vehicle? It might be time to replace the battery in your Mercedes-Benz key fob. Let the experts at Mercedes-Benz of New Rochelle fix your key fob issues. We’ll go over how to replace your key fob yourself and what to look for when your fob is losing battery..

What are the Warning Signs Your Key Fob Battery Needs Replacement?

There are various signs that your Mercedes-Benz key fob is losing battery. Let’s go over some of the most common thing to look out for:

• If it takes multiple attempts to start your vehicle, the battery in your key fob may need to be replaced. 
• If you’re having trouble either locking, unlocking, or setting off the alarm on your vehicle, it could mean the battery may need to be replaced. 
• You could also receive an alert on the dashboard letting you know that there is an issue with the charging system, and may need to replace the battery.

It’s best to take action as soon as you notice any issues with the battery in your Mercedes-Benz key fob. This will prevent any further issues when cruising through the streets of Larchmont.

How to Replace Your Mercedes Key Fob Battery

There are a few easy steps you can take to change your Mercedes key fob battery. Let’s go over these steps in detail:

• Determine Your Key Type: There are two main types of keys associated with Mercedes-Benz vehicles, the Chrome SmartKey® or an older SmartKey®.
• Get the Right Batteries: If you have the newer Chrome SmartKey®, you will only need one CR 2025 battery, where the SmartKey® on older models require two.
• SmartKey® for Older Models: If you have the older SmartKey® models, you have to pull the latch at the end of the key, push it horizontally into the slot, and take the battery out.
• Chrome SmartKey® for Newer Models: If you have the newer Chrome SmartKey®, you just pull the tab at the base of the key, push the narrow end of the slot to remove the cover, and insert the battery.

Learn More About Mercedes-Benz Service at Mercedes-Benz of New Rochelle

If you still aren’t sure about how to change the battery in Mercedes key, you can reach out to the trusted experts at New Rochelle. Our service center can help you replace your battery or anything else you may need. If you have questions about Mercedes-Benz service cost or are interested in any of our service specials, feel free to contact us anytime!