Replacing the key battery for your Mercedes-Benz is a relatively simple task that can be completed in just a few minutes. By following these simple steps, you can ensure that your key fob is always functioning properly.
The first step is to locate the key battery. This is typically found inside the key fob, either in a small compartment or underneath a removable cover. Once you have located the battery, you will need to carefully remove it. Be sure to avoid touching the metal contacts on the battery, as this can damage it.
Once the old battery has been removed, you can insert the new battery. Be sure to orient the battery correctly, as it will only fit one way. Once the new battery is in place, you can reassemble the key fob and test it to make sure it is working properly. If you are still having problems with your key fob, you may need to take it to a dealership or locksmith to have it repaired.
Remove the Key Blade (Optional)
If your Mercedes-Benz key has a removable blade, you’ll need to remove it before you can replace the battery. To do this, simply insert the blade of a small flathead screwdriver into the slot on the back of the key and gently pry up. The blade should come loose easily.
Once the blade is removed, you can proceed to replace the battery.
Replace the Battery
Now that you have access to the battery, it’s time to replace it. Here are the steps you need to follow:
- Use a small Phillips head screwdriver to remove the screw that holds the battery in place.
- Gently pry open the battery compartment and remove the old battery.
- Insert the new battery into the compartment, making sure that the positive (+) and negative (-) terminals are aligned correctly.
- Secure the battery in place with the screw.
Reinsert the Key Blade (Optional)
If you removed the key blade earlier, you’ll need to reinsert it now. To do this, simply align the blade with the slot on the back of the key and press down until it clicks into place.
Your Mercedes-Benz key should now be working again.
Battery Model
The type of battery that you need for your Mercedes-Benz key will depend on the model of your car. Here is a table of the most common battery types:
| Mercedes-Benz Model | Battery Type |
|---|---|
| A-Class | CR2025 |
| C-Class | CR2032 |
| E-Class | CR2025 |
| S-Class | CR2032 |
Open the Battery Compartment
The battery compartment can be found on the back of the key fob. Look for a small, rectangular slot or a small hole. Place a flat-head screwdriver or a thin object into the slot or hole and pry open the battery compartment. The battery will be held in place by a small metal clip. Use a small screwdriver or a pair of tweezers to carefully remove the clip and release the battery.
Locate the Replacement Battery
The replacement battery for your Mercedes-Benz key fob can be found at most hardware stores, automotive stores, or online retailers. The battery type you need will vary depending on the model of your Mercedes-Benz. Consult your owner’s manual or the battery compartment itself to determine the correct battery type.
Insert the Replacement Battery
Insert the replacement battery into the battery compartment, making sure that the positive and negative terminals are aligned correctly. Place the metal clip back over the battery to secure it in place. Close the battery compartment and make sure that it is securely closed.
Test the Key Fob
Once you have replaced the battery, test the key fob to make sure that it is working correctly. Press the buttons on the key fob and make sure that the car responds. If the key fob is not working, check the following:
- Make sure that the battery is inserted correctly.
- Make sure that the battery compartment is closed securely.
- Try a new battery.
If you are still having problems with your key fob, consult your Mercedes-Benz dealership for assistance.
Remove the Emergency Key
Locate the small indentation on the back of the key fob. Insert the tip of your key or a small screwdriver into the indentation and gently pry open the key fob.
Remove the Battery
Once the key fob is open, you will see the battery. Use your fingers or a small tool to remove the battery from its compartment.
Insert the New Battery
Take the new battery and insert it into the compartment in the same orientation as the old battery. Make sure that the positive (+) terminal of the battery is facing up.
Close the Key Fob
Once the new battery is in place, close the key fob by snapping it shut. Make sure that the key fob is completely closed before using it.
Reinsert the Key Blade (Optional)
Reinsert the Key Blade (Optional)
Remove the Key Blade
If your Mercedes-Benz key has a removable key blade, you will need to remove it before replacing the battery. To do this, hold the key blade upright and press the small button on the side of the key fob. The key blade will then pop out.
Insert the Key Blade
Once the battery has been replaced, you can reinsert the key blade by aligning it with the slot in the key fob and pushing it in until it clicks into place.
Test the Key Fob
Once the key fob is closed and the key blade has been reinserted (if applicable), test the key fob by pressing the buttons. The key fob should now be working properly.
Battery Information
The following types of batteries are typically used in Mercedes-Benz key fobs:
| Battery Type | Replacement Interval |
|---|---|
| CR2025 | Every 2-3 years |
| CR2032 | Every 3-4 years |
How To Replace Key Battery For Mercedes-Benz
Replacing the battery in your Mercedes-Benz key fob is quite simple and can be done in just a few minutes with the right tools. Here’s a step-by-step guide on how to replace the key battery for Mercedes-Benz:
- Gather your tools. You will need a small Phillips head screwdriver, a new CR2025 battery, and a spudger or a small flathead screwdriver.
- Locate the small screw on the back of the key fob. This screw is usually located near the key ring.
- Use the Phillips head screwdriver to remove the screw. Be careful not to strip the screw.
- Gently pry open the key fob using the spudger or the small flathead screwdriver. Be careful not to damage the key fob.
- Locate the old battery. The battery is usually held in place by a small clip.
- Use the spudger or the small flathead screwdriver to gently pry the old battery out of the clip.
- Insert the new battery into the clip. Make sure that the positive (+) side of the battery is facing up.
- Snap the key fob back together.
- Replace the screw on the back of the key fob.
- Test the key fob to make sure it is working properly.
People Also Ask About How To Replace Key Battery For Mercedes-Benz
How often should I replace the battery in my Mercedes-Benz key fob?
The battery in your Mercedes-Benz key fob should last for about 2-3 years. However, the battery life may vary depending on how often you use your key fob.
What type of battery does my Mercedes-Benz key fob use?
Most Mercedes-Benz key fobs use a CR2025 battery.
Where can I buy a replacement battery for my Mercedes-Benz key fob?
You can buy a replacement battery for your Mercedes-Benz key fob at most auto parts stores or online retailers.
Can I replace the battery in my Mercedes-Benz key fob myself?
Yes, you can replace the battery in your Mercedes-Benz key fob yourself. It is a simple process that can be done in just a few minutes.
