How to Change the Battery of a Mercedes Key Fob?

Uh-oh, are you seeing all the symptoms of a dying Mercedes-Benz key fob battery? There’s no reason to get frustrated. Learning how to change your Mercedes-Benz key battery only takes a moment, and find out how to take the following steps below.

Lock Angeles provides step-by-step instructions on how to open your car key fob and replace the battery for your Mercedes-Benz. This is likely the solution if your car key is not functioning correctly.

Identify the Type of Mercedes-Benz Car Key Fob You Have

To determine how many batteries you require, consider the type of key you have. The Chrome Key is a key fob designed for newer Mercedes-Benz models and enclosed in a metal casing.

There are two versions of Chrome Keys—an older version and a newer version. The more recent version requires one battery, while the older version needs two. You can identify the performance of your Chrome Key by observing the panic button on it—a circular panic button indicates an older model, and a triangular panic button shows a newer model.

Older Mercedes-Benz models may use a SmartKey® as one of the key fob options. SmartKey® is made of plastic and requires two batteries.

What is the Average Lifespan of Key Fob Batteries?

What is the average lifespan of key fob batteries? Like any other battery, key fob batteries have a limited lifespan and require replacement once worn out. This is because every use of the key fob consumes some of the battery’s energy and causes it to degrade over time.

Key fob batteries typically last for three to four years before requiring a replacement. If you’re sure about when to replace your key fob battery, keep reading to learn about replacing your key fob battery.

How to Open Your Mercedes-Benz Car Key Fob?

If you’re unsure about opening your Mercedes-Benz key fob, remember that the process may vary depending on whether you have a Chrome Key or a SmartKey®. However, once you know the type of key fob you have, replacing the battery is a simple task.

If you want to replace the battery of your Mercedes-Benz Chrome Key, here is how to open it:

• To begin, please pull down on the silver square-shaped tab at the bottom of the key. Keep pulling until it gets released.
• To open the key cover, push the key into the narrow and flat end of the fob, which you can find after separating the tab and noticing a small gap.
• Remove the old one and insert the new one to replace the battery. Ensure that the new battery is oriented correctly.

To replace the battery in a Mercedes-Benz Smart Key, here are the steps to open it.

• To remove the key, pull on the latch end of the fob, and it should come out by itself.
• Once the key is released, the key fob will have a visible slot at the end.
• Insert the key into this slot to unlock the battery compartment.
• Before replacing the old battery with the new one, ensure that you have positioned it in the correct orientation.

Final Thoughts

Replacing the battery of your Mercedes-Benz key fob should be relatively simple once you have identified the type of key. Understanding how to open the key fob correctly is important, making it much easier to access and replace the batteries.

We hope these instructions help you change your car’s battery. Lock Angeles is here to help if you have questions or require further assistance. Happy driving!