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How To Change Battery In Jeep Wrangler Key Fob Easily
What is the battery type for a Jeep Wrangler key fob? The most common battery type for a Jeep Wrangler key fob is a CR2032 coin cell battery. However, it’s always best to check your specific key fob model to confirm the exact battery size.
Is your Jeep Wrangler key fob acting up? Does it sometimes fail to unlock your doors or start your engine? Chances are, the battery in your Jeep Wrangler key fob needs to be replaced. This is a common issue, and thankfully, it’s a fix you can easily do yourself without needing to visit a dealership or a mechanic. This guide will walk you through the entire process of a Jeep Wrangler key fob battery replacement, ensuring your Jeep Wrangler remote battery gets the power it needs to function perfectly.
We’ll cover everything from identifying the right battery to safely opening your key fob and putting it all back together. Whether you have a newer Jeep Wrangler smart key battery or an older model’s transmitter battery, these steps will help you get your Jeep Wrangler keyless entry working like new again.
Why Your Jeep Wrangler Key Fob Battery Needs Replacing
Like any battery, the one powering your Jeep Wrangler key fob has a finite lifespan. Over time, it simply loses its charge. This can happen gradually, leading to intermittent issues, or it can happen suddenly, leaving you with a completely unresponsive key fob.
Several factors contribute to battery drain:
- Age: Batteries degrade over time, even if the key fob isn’t used frequently.
- Usage: The more you use your key fob’s buttons, the faster the battery will drain.
- Environmental Factors: Extreme temperatures (both hot and cold) can affect battery performance and longevity.
- Interference: Although rare, strong radio frequency interference can sometimes cause the fob to transmit more often, using up battery power.
When you notice any of these symptoms, it’s a clear sign that a Jeep key fob battery replacement is in order:
- The range of your key fob decreases.
- The buttons feel less responsive.
- The unlock or lock function only works when you’re very close to the vehicle.
- Your Jeep Wrangler transmitter battery is completely dead, and the key fob doesn’t work at all.
What You’ll Need for Your Jeep Wrangler Key Fob Battery Replacement
Before you start, gather these essential items:
- New Battery: As mentioned, a CR2032 is the most common, but always confirm your specific model. You can often find these at electronics stores, supermarkets, or online retailers.
- Small Flathead Screwdriver or Plastic Pry Tool: This is crucial for safely opening the key fob without damaging it. A plastic pry tool is ideal as it’s less likely to scratch or mar the fob’s casing.
- Soft Cloth: To keep your key fob clean and prevent fingerprints while you work.
- Your Jeep Wrangler Key Fob: Of course!
Step-by-Step Guide: How to Open Your Jeep Wrangler Key Fob
The process of how to open a Jeep Wrangler key fob is generally straightforward, but it requires a gentle touch. There are typically two main types of key fobs for Jeep Wranglers: those with a physical key that slides out and those that are a single integrated unit.
For Key Fobs with a Sliding Physical Key:
- Locate the Release Button: Most key fobs of this type have a small sliding button or latch on the side or back. This button releases the physical metal key. Slide or press this button and pull out the metal key.
- Find the Seam: Once the key is removed, look for a seam running along the edge of the key fob where the two halves of the casing meet.
- Insert the Pry Tool: Gently insert the tip of your flathead screwdriver or plastic pry tool into this seam. You might need to wiggle it slightly to create a small gap.
- Carefully Pry Apart: Work your way around the seam, gently prying the two halves of the fob apart. Apply steady, upward pressure. Avoid forcing it, as this can break the plastic clips that hold the fob together. You should hear faint clicks as the clips release.
- Separate the Halves: Once all the clips are released, the two halves of the key fob will separate.
For Integrated Key Fobs (No Removable Key):
- Examine the Fob: These fobs are often a single piece with no obvious release for a physical key. Look for a very fine seam around the edges.
- Locate the Notch: You might find a small notch or slot along one of the edges. This is where you’ll insert your prying tool.
- Insert and Pry: Carefully insert the tip of your flathead screwdriver or plastic pry tool into the notch. Gently twist or pry to separate the casing.
- Work Around the Edges: Continue to work the tool along the seam, releasing the internal clips as you go. Be patient and gentle.
Pro Tip: If you’re having trouble finding the seam or a starting point, consult your Jeep’s owner’s manual. It often contains diagrams or specific instructions for your key fob model.
Replacing the Jeep Wrangler Remote Battery
Once your Jeep Wrangler key fob is open, you’ll see the circuit board and the coin cell battery.
- Identify the Battery: The battery will be round and flat, usually silver in color.
- Remove the Old Battery: The battery is typically held in place by a small metal clip or simply seated in a compartment. You can use your flathead screwdriver or pry tool to gently lift the old battery out. Be careful not to bend the metal clip excessively.
- Note the Polarity: Pay close attention to how the old battery is oriented. There will be a plus (+) side and a minus (-) side. The new battery needs to be inserted the same way.
- Insert the New Battery: Place the new CR2032 battery into the compartment, ensuring the correct side (usually the positive side with the ‘+’ symbol facing up) is exposed.
- Secure the Battery: Press down gently on the new battery to ensure it’s seated correctly and making good contact with the terminals.
Reassembling Your Jeep Wrangler Key Fob
Reassembly is the reverse of disassembly.
- Align the Halves: Carefully align the two halves of the key fob casing.
- Snap Together: Press the two halves together firmly. You should hear clicks as the internal clips snap back into place. Ensure there are no gaps along the seam.
- Reinsert the Physical Key (if applicable): If your key fob has a removable physical key, slide it back into its slot until it clicks securely.
- Test the Key Fob: Before putting everything away, test your key fob. Press the lock and unlock buttons to ensure they are working. Try starting your Jeep Wrangler to confirm the smart key battery is recognized.
Troubleshooting Common Jeep Wrangler Key Fob Issues
If your Jeep Wrangler key fob isn’t working after the battery replacement, don’t worry. Here are some common Jeep Wrangler key fob troubleshooting steps:
- Incorrect Battery Type: Double-check that you used the correct battery size (e.g., CR2032).
- Incorrect Battery Orientation: Ensure the positive (+) and negative (-) sides of the battery are in the correct position as per the original installation.
- Loose Battery Connection: Remove the battery and reinsert it, making sure it’s firmly seated against the terminals.
- Damaged Key Fob: Inspect the key fob for any visible cracks or damage to the internal circuit board or battery contacts.
- Key Fob Programming: In some rare cases, especially with older models or if the battery was dead for an extended period, the key fob might need to be reprogrammed. This usually requires a specific procedure outlined in your owner’s manual or a visit to a dealership. For most modern Jeep Wranglers, simply replacing the battery is enough.
- Internal Damage: If the key fob has been dropped or exposed to moisture, there might be internal damage beyond just the battery.
Jeep Wrangler Key Fob Battery Types at a Glance
| Jeep Wrangler Model Year Range | Common Key Fob Battery Type | Additional Notes |
|---|---|---|
| 2007-2017 | CR2032 | Often found in fobs with a separate key that slides out. |
| 2018-Present | CR2032 | Commonly used in integrated smart key fobs. |
| Note: | Always confirm your specific model. | The specific battery can vary slightly based on trim level or optional packages. Checking your owner’s manual is highly recommended. |
Factors Affecting Jeep Wrangler Transmitter Battery Life
The lifespan of your Jeep Wrangler transmitter battery can vary. Several factors play a role:
- Frequency of Use: Daily use of the lock, unlock, and panic buttons will drain the battery faster than occasional use.
- Button Presses: Holding down a button for an extended period, even accidentally, can use more power.
- Battery Quality: Higher-quality batteries from reputable brands tend to last longer than cheaper, unbranded ones.
- Environmental Conditions: As mentioned, extreme temperatures can impact performance. Storing your Jeep in a very hot or very cold garage might affect how long the battery lasts between changes.
- Key Fob Design: Newer key fobs with advanced features like remote start or proximity sensors might consume slightly more power.
What to Do with Old Batteries
Dispose of old batteries responsibly. Coin cell batteries contain chemicals that can be harmful to the environment if not disposed of properly. Most electronic stores, supermarkets, and local waste disposal centers have battery recycling programs.
Long-Term Care for Your Jeep Wrangler Key Fob
To extend the life of your Jeep Wrangler key fob and its battery:
- Keep it Dry: Avoid exposing your key fob to excessive moisture or submerging it in water.
- Protect it from Drops: A protective key fob cover can add a layer of defense against accidental drops.
- Avoid Extreme Heat: Don’t leave your key fob in direct sunlight for extended periods, especially on a hot dashboard.
- Minimize Unnecessary Button Presses: Be mindful of accidentally pressing buttons when the fob is in your pocket or bag.
When to Seek Professional Help
While changing the battery in your Jeep Wrangler key fob is a DIY-friendly task, there are instances where you might need professional assistance:
- Broken Key Fob Casing: If the plastic casing of your key fob is cracked or broken, attempting to open it can cause further damage.
- Water Damage: If your key fob has been submerged or exposed to significant moisture and is no longer working, the internal electronics might be damaged.
- Key Fob Not Responding After Battery Change: If you’ve followed all the steps, used the correct battery, and the key fob still doesn’t work, there might be an issue with the key fob itself or the vehicle’s receiver.
- Lost Key Fob: If you’ve lost your key fob entirely, you’ll need to get a new one programmed by a dealership or a qualified automotive locksmith.
Frequently Asked Questions (FAQ)
Q1: How often should I replace the battery in my Jeep Wrangler key fob?
A1: The battery typically lasts between 2 to 5 years, depending on usage and battery quality. If you notice reduced range or intermittent performance, it’s time for a change.
Q2: Can I use a rechargeable battery in my Jeep Wrangler key fob?
A2: No, most key fobs are designed for non-rechargeable coin cell batteries and do not have the circuitry to charge rechargeable batteries. Using the wrong type of battery can damage the key fob.
Q3: My Jeep Wrangler key fob has multiple buttons. Does this affect the battery type?
A3: Generally, no. The number of buttons doesn’t usually dictate a different battery type, but always confirm the specific model’s requirements.
Q4: After replacing the battery, my Jeep Wrangler keyless entry still doesn’t work. What else could be the problem?
A4: Check the battery orientation, ensure the battery is making good contact, and inspect the key fob for any physical damage. If problems persist, the key fob might need reprogramming or could be faulty.
Q5: Where can I buy a replacement Jeep Wrangler remote battery?
A5: You can purchase replacement batteries at most electronics stores, pharmacies, supermarkets, and online retailers. Always look for reputable brands to ensure quality.
By following these detailed steps, you can confidently perform a Jeep Wrangler key fob battery replacement, keeping your Jeep Wrangler accessible and secure. Enjoy the convenience of a fully functional key fob once again!