Step-by-Step Instructions:

Locate the Emergency Key:

Find the emergency key on your key fob. There's a little black lever; slide it in the direction that releases the key.

Remove the Key:

Once released, take out the emergency key.

Access the Battery:

Examine the key fob, especially the corner where the key was. You'll notice a little opening.

Remove Cover:

Insert the key into the corner opening, push it down, and you'll feel a slight pop. This means the cover is released.

Replace the Battery:

With the cover off, you'll see the CR 2025 battery. Remove the old battery and insert a new one.

Secure the Cover:

Snap the cover back into place. It should clip in easily.

Test the Key Fob:

Press any button on the key fob. If you see the red LED indicator light up, you've successfully replaced the battery.

And that's it! Your Mercedes-Benz key fob now has a fresh battery. If you found this helpful, stay tuned for more tips and guides. Until next time!