Owning a Mercedes-Benz in 2019 and beyond means experiencing the pinnacle of automotive technology. But even the most advanced vehicles require some simple maintenance, like changing the battery in your key fob. A dead key fob battery can be a major inconvenience, leaving you stranded and unable to access your vehicle.
This guide will walk you through the process of changing the battery in your 2019 Mercedes key fob, ensuring you’re back on the road in no time.
Recognizing a Low Key Fob Battery
Before you start digging around for a replacement battery, it’s important to confirm that your key fob battery is actually the culprit. Here are a few telltale signs that your Mercedes key fob battery is running low:
- Decreased Range: Your key fob no longer unlocks or locks your car from a distance. You might need to be standing right next to the vehicle for it to work.
- Delayed Response: You press a button on your key fob, and there’s a noticeable lag before the car responds.
- Warning Messages: Your Mercedes dashboard might display warnings like “Key Fob Battery Low” or similar messages.
- Inconsistent Functionality: Sometimes your key fob works perfectly, other times it doesn’t work at all.
If you’re experiencing any of these issues, it’s highly likely that your key fob battery needs to be replaced.
What You’ll Need to Change the Battery
Fortunately, changing the battery in your 2019 Mercedes key fob is a simple DIY task that requires minimal tools and time. Here’s what you’ll need:
- A New Battery: The battery type for a 2019 Mercedes key fob is typically a CR2032 3V lithium battery. It’s readily available online or at most stores that sell batteries.
- A Small Flat-Head Screwdriver: This will help you to pry open the key fob casing.
- A Soft Cloth: Use this to clean the battery compartment and avoid scratching your key fob.
Step-by-Step Guide to Changing the Battery
Follow these easy steps to change your 2019 Mercedes key fob battery:
- Locate the Emergency Key Slot: On the side of your key fob, you’ll find a small slot. This is for releasing the emergency key blade.
- Insert the Screwdriver: Carefully insert the tip of your flat-head screwdriver into the emergency key slot.
- Gently Pry Open the Casing: Apply gentle pressure on the screwdriver to pry open the key fob casing. You might hear a slight click as the casing separates.
- Separate the Casing Halves: Once the casing is loose, you can use your fingers to carefully separate the two halves of the key fob.
- Identify the Battery: Inside the key fob, you’ll see the battery, which is a small, round, silver disc.
- Remove the Old Battery: Carefully remove the old battery by gently prying it out with your fingernail or the edge of the screwdriver. Avoid using excessive force.
- Insert the New Battery: Place the new CR2032 battery into the compartment, making sure that the positive (+) side is facing up, the same way the old battery was positioned.
- Reassemble the Key Fob: Align the two halves of the key fob casing and press them together firmly until you hear a click, indicating that they have snapped back into place.
Testing Your New Key Fob Battery
After you’ve replaced the battery, test the key fob to make sure it’s working properly. Try locking and unlocking your car, as well as using the other functions on your key fob, like opening the trunk. If everything is functioning as it should, you’ve successfully replaced your key fob battery!
Testing a Mercedes Key Fob after Battery Replacement
Still Having Issues? Keyfobprog Can Help!
While changing the battery in your 2019 Mercedes key fob is a straightforward process, there might be instances where you encounter difficulties or the key fob still doesn’t function correctly. That’s where we come in!
At Keyfobprog, we specialize in automotive key fob programming, replacement, and battery services for all Mercedes-Benz models. Our team of expert technicians has the knowledge and experience to diagnose and resolve any key fob issues you might be facing.
Here’s how we can assist you:
- Key Fob Diagnostics: We’ll accurately diagnose the problem with your key fob, determining whether it’s a battery issue, a programming error, or a malfunctioning component.
- Professional Battery Replacement: We provide quick and reliable battery replacement services for all types of Mercedes key fobs.
- Key Fob Programming: If your key fob needs to be reprogrammed to your vehicle, our technicians have the expertise and specialized equipment to get the job done efficiently.
- Key Fob Replacement: If your Mercedes key fob is damaged beyond repair or lost, we can provide you with a new, fully functional replacement key fob, programmed to your specific vehicle.
Don’t let a dead key fob battery ruin your day. Contact Keyfobprog at +1 (641) 206-8880 or visit our office at 1326 N Houston St, Amarillo, TX 79107, USA, and we’ll be happy to assist you with all your Mercedes key fob needs.
FAQs: Changing Your Mercedes Key Fob Battery
1. How often should I change the battery in my Mercedes key fob?
Typically, a Mercedes key fob battery lasts between 2 to 3 years. However, factors like usage and climate can impact battery life. It’s a good idea to consider changing the battery every two years preventatively.
2. Can I use any type of CR2032 battery for my key fob?
While most CR2032 3V lithium batteries will work, it’s best to choose a reputable brand known for quality and longevity.
3. Will changing the battery myself void my Mercedes warranty?
No, changing the battery in your key fob will not void your Mercedes warranty. This is considered standard maintenance. However, if you’re uncomfortable doing it yourself, a qualified mechanic or dealership can assist you.
4. What should I do if I replace the battery, and my key fob still doesn’t work?
If you’ve replaced the battery correctly and your key fob still isn’t functioning, there might be an issue with the key fob itself or the vehicle’s receiver. In this case, it’s best to contact a Mercedes dealership or a qualified automotive locksmith for further assistance.
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