Is your car key fob acting up? Finding yourself pressing the unlock button multiple times before your car responds? It might be time to consider a key fob battery replacement. Like any battery, the one powering your key fob weakens over time, and knowing what battery goes in your key fob is the first step to resolving this common issue.
While you could seek professional help from a dealership, a car repair shop, or even a battery specialist to replace your key fob battery, you might be surprised to learn that this is a task you can easily handle yourself. Replacing a car key fob battery is considerably simpler than tackling your car’s main battery. With just a few basic tools and the correct replacement battery, you can breathe new life into your car key remote. And if you’re worried about damaging your fob, rest assured that aftermarket key fob replacement options are available should you need them.
Is your car key fob not working as reliably as it used to? The solution might be simpler than you think. You might already have everything you need right at home to get your car key fob working like new again.
Identifying What Battery Your Key Fob Needs
Before you start taking apart your key fob, the crucial first step is determining what battery goes in your key fob. Using the wrong battery can prevent your key fob from working or even damage it. Here’s how to figure out the correct battery for your key fob:
Check Your Key Fob Case for Battery Information
The easiest way to determine what battery goes in your key fob is to check the key fob itself. Many key fobs have the battery type embossed directly on the case. Look closely at the back of your key fob or inside the battery compartment for markings. You might find letters and numbers indicating the battery size, such as CR2032, CR1620, or CR2025. These codes are standard and will help you purchase the correct replacement.
Opening Your Key Fob to Identify the Battery
If you can’t find the battery type on the outside of your key fob, don’t worry. You’ll need to carefully open the case to visually identify what battery goes in your key fob. Most key fobs are designed to be opened, although they may not be immediately obvious how to do so.
Tools You’ll Need:
- Thin Blade or Watch Knife: For gently prying open the key fob case.
- Precision Screwdriver (1.4mm – 2.4mm): Depending on your key fob model, you might encounter small screws.
- Tweezers: Helpful for handling the small battery.
- Your Smartphone Camera: Essential for taking reference photos.
Steps to Open Your Key Fob:
- Inspect the Key Fob Case: Look for a small notch or seam line around the edge of the key fob case. This is usually where you’ll need to insert your prying tool.
- Gently Pry the Case Open: Using your thin blade or watch knife, carefully insert the tip into the notch or seam. Apply gentle pressure to start separating the two halves of the case. Avoid forcing it, as you could damage the plastic. Work your tool around the perimeter of the case, gently prying at the fasteners until the case pops open.
- Take a Picture: Before you remove the battery, take a clear photo of the key fob’s internal components, paying close attention to the battery’s orientation (+ and – sides) and the placement of any other parts. This photo will be invaluable when you reassemble the key fob.
- Identify the Battery: Once the case is open, you’ll see the battery. Note the battery type printed on it. Common key fob batteries are coin cell lithium batteries, often CR2032, CR2025, or CR1620.
Common Key Fob Battery Types
While it’s always best to check your specific key fob, here are some common battery types you might find:
- CR2032: This is one of the most common key fob batteries. It’s a 3V lithium coin cell battery and is widely available.
- CR2025: Similar to CR2032 but slightly thinner. Also a 3V lithium coin cell.
- CR1620: A smaller and thinner 3V lithium coin cell battery.
- CR1632: Slightly thicker than CR1620, also a 3V lithium coin cell.
It’s important to note that the specific battery what battery goes in your key fob can vary depending on the year, make, and model of your car. For example, while many cars use a CR2032, some, like certain Honda CR-V models, might use a CR1250 battery. Some key fobs might even require two batteries, like some Ford Mustang key fobs. Always double-check your fob to be certain.
Step-by-Step Guide to Key Fob Battery Replacement
Now that you’ve identified what battery goes in your key fob, you’re ready to replace it. Here’s a simple step-by-step guide:
- Gather Your Tools and New Battery: Make sure you have the correct replacement battery and the tools you used to open the key fob.
- Remove the Old Battery: Using tweezers or your fingers, carefully remove the old battery from its compartment. Note the orientation of the battery before removing it (positive side up or down) if you didn’t already capture it in a photo.
- Install the New Battery: Insert the new battery into the compartment, ensuring the correct polarity (+ and – sides are oriented as indicated in your photo or as you noted when removing the old battery).
- Reassemble the Key Fob: Carefully snap the two halves of the key fob case back together. Ensure they are firmly closed and all fasteners are engaged. If your key fob had screws, tighten them gently.
- Test Your Key Fob: Try using your key fob to lock and unlock your car and start the engine (if your fob has a remote start feature). If it works, you’ve successfully replaced your key fob battery!
Important Tips for Key Fob Battery Replacement:
- Work in a Clean, Well-Lit Area: This will help you keep track of small parts and avoid losing anything.
- Be Gentle: Avoid using excessive force when prying open the case or handling internal components.
- Don’t Disturb the Internals: Be careful not to touch or damage any of the wiring or the circuit board inside the key fob. The circuit board is responsible for programming your key fob to your car.
- If in Doubt, Consult a Professional: If you’re uncomfortable opening your key fob or are unsure about any step, it’s always best to seek help from a professional.
Where to Get Key Fob Batteries and Key Fob Services
You can find replacement key fob batteries at most retailers that sell batteries, including drugstores, supermarkets, and auto parts stores. For a wide selection and expert advice, consider visiting a specialized battery store like Interstate All Battery Center.
Interstate All Battery Center not only offers a wide range of key fob batteries but also provides key fob replacement and programming services at select locations. If you’re looking for a spare key fob, need a replacement due to loss or damage, or require programming services, Interstate All Battery Center can be a convenient and reliable solution, often offering more affordable options than dealerships.
Conclusion
Knowing what battery goes in your key fob and how to replace it yourself can save you time and money. By following these simple steps, you can easily restore your key fob’s functionality and avoid the inconvenience of a dead remote. Remember to always double-check the battery type and handle your key fob with care. And for all your battery needs, including car batteries and key fob batteries, consider the trusted expertise and wide selection at Interstate All Battery Center.
