Effortless Expertise: How to Change Key Fob Battery on Mercedes
What To Know
- Fortunately, replacing the battery is a simple task that can be done in just a few minutes, saving you a trip to the dealership.
- The battery compartment is often located on the side of the key fob, behind a small cover.
- While changing the battery is a simple fix, here are some tips to extend the life of your key fob battery.
Your Mercedes key fob is your gateway to your luxury vehicle, but like all things, its battery eventually needs replacing. A dead key fob battery can leave you stranded, unable to unlock your car or even start the engine. Fortunately, replacing the battery is a simple task that can be done in just a few minutes, saving you a trip to the dealership. This guide will walk you through the process of how to change key fob battery on Mercedes, ensuring you’re always ready to hit the road.
Identify Your Key Fob Type
The first step is to identify the type of key fob you have. Mercedes offers several different key fob designs, and the battery replacement process may vary slightly depending on the model.
Common Mercedes Key Fob Types:
- Standard Key Fob: This type features a single button for unlocking and locking the doors, and a separate button for the trunk.
- Keyless Go Key Fob: These key fobs are more advanced and allow you to unlock and start your car without taking the key out of your pocket.
- Keyless-Go Key Fob with Folding Key: This type combines the functionality of a keyless-go key fob with a traditional folding key blade.
Gather Your Supplies
Before you begin, gather the following supplies:
- New Battery: The type of battery required for your Mercedes key fob will depend on the model. You can find the correct battery type in your owner’s manual or by contacting your local Mercedes dealer.
- Small Screwdriver: You will need a small screwdriver to open the key fob.
- Optional: Tweezers: Tweezers can be helpful for removing the old battery.
Locate the Battery Compartment
Once you have gathered your supplies, locate the battery compartment on your key fob. The location of the battery compartment can vary depending on the key fob model.
- Standard Key Fob: The battery compartment is usually located on the back of the key fob, behind a small cover.
- Keyless Go Key Fob: The battery compartment is typically located on the side of the key fob, behind a small cover.
- Keyless-Go Key Fob with Folding Key: The battery compartment is often located on the side of the key fob, behind a small cover.
Open the Key Fob
To open the key fob, you will need to carefully pry open the cover using a small screwdriver. Start by inserting the screwdriver into a small gap between the cover and the key fob body. Gently pry the cover open, being careful not to damage the key fob.
Remove the Old Battery
Once the cover is open, you will see the old battery. Carefully remove the old battery, taking note of its orientation. If you have tweezers, they can be helpful for removing the battery.
Insert the New Battery
Insert the new battery into the battery compartment, ensuring that the positive (+) and negative (-) terminals are correctly aligned. The orientation of the battery should be the same as the old battery.
Close the Key Fob
Once the new battery is in place, close the key fob cover. Make sure the cover snaps firmly into place.
Test Your Key Fob
After replacing the battery, test your key fob to ensure it works correctly. Try unlocking and locking your car, and if you have a keyless-go system, try starting the engine.
Final Thoughts: Extending Your Key Fob’s Lifespan
While changing the battery is a simple fix, here are some tips to extend the life of your key fob battery:
- Avoid Extreme Temperatures: Exposure to extreme temperatures, both hot and cold, can negatively impact battery life. Store your key fob in a cool, dry place.
- Minimize Key Fob Use: Try to minimize the number of times you use your key fob, especially if you are not near your car. This will help to conserve battery power.
- Turn Off Unnecessary Features: If your key fob has features like remote start or keyless entry, consider turning them off if you are not using them. This can help to conserve battery power.
Basics You Wanted To Know
Q: How often should I change the key fob battery?
A: The battery life of a key fob can vary depending on how often it is used. However, most key fobs will need a new battery every 1-2 years.
Q: What type of battery do I need for my Mercedes key fob?
A: The type of battery required for your Mercedes key fob will depend on the model. You can find the correct battery type in your owner’s manual or by contacting your local Mercedes dealer.
Q: What should I do if my key fob is not working after replacing the battery?
A: If your key fob is still not working after replacing the battery, it may be a problem with the key fob itself or the car’s keyless entry system. You should contact your local Mercedes dealer for assistance.
Q: Can I use a different type of battery in my key fob?
A: It’s not recommended to use a different type of battery in your key fob. Using the wrong type of battery can damage the key fob or even cause a fire. Always use the type of battery specified in your owner’s manual.
Q: How do I know if my key fob battery is dead?
A: If your key fob battery is dead, you will notice that the key fob is not working properly. The buttons may not respond, or the key fob may not be able to unlock or lock the car. You may also see a flashing red light on the key fob, indicating that the battery is low.