Posted by James Boyle

If you find yourself stuck with a Mercedes-Benz Class 3 remote key with a dead battery, fear not – replacing it is a straightforward process. In this quick and easy guide brought to you by Remote Pro, we'll walk you through the steps to replace the flat battery in your Mercedes key, ensuring you're back on the road in no time.

Step 1: Unlocking the Key

The first step in this simple process is to release the latch on your existing key. This action allows the safety blade to come out, granting you access to the inner components. To do this, use your nails if they are long enough or opt for a flat-blade screwdriver if needed. Gently insert the tool into the latch and apply a bit of pressure to release it.

Step 2: Identifying the Battery Type

Before diving into the replacement process, take a moment to identify the type of battery your Mercedes key requires. Generally, this information is written on the battery itself, and for Class 3 remotes, the standard is a CR2025 battery.

Step 3: Removing the Old Battery

Once the latch is released, carefully take out the old battery from its compartment. Use caution and ensure you're handling the key with care to avoid any damage.

Step 4: Inserting the New CR2025 Battery

Now, take your new CR2025 battery and place it into the battery compartment. Make sure the positive (+) and negative (-) sides of the battery align correctly with the markings inside the key. Gently press down to secure the battery in place.

Step 5: Closing the Key

With the new battery securely in place, it's time to close the key. Carefully slide the safety blade back into its original position until it clicks into place. Ensure that the latch is securely closed, and your Mercedes key is ready for action.

Congratulations! You've successfully replaced the flat battery in your Mercedes-Benz Class 3 remote key. This quick and easy guide provided by Remote Pro ensures that you can perform this essential task without any hassle. Remember, always use the recommended CR2025 battery for optimal performance, and you'll be back on the road with a fully functional key in no time. For more tips and solutions, stay tuned to Remote Pro for all your remote key needs.