Your Jeep key fob stops working, and you wonder what small batteries power that essential remote. If you are searching for “what batteries do jeep key fobs take,” you are likely holding a dead fob and need a quick fix. The answer depends on your Jeep model and key fob style, but most modern Jeep key fobs use a CR2032 or CR2025 lithium coin battery. These small, flat batteries are widely available at hardware stores, auto parts shops, and online retailers.
The first step is identifying your fob type. Older Jeep models from the early 2000s often use a CR2032 battery, while newer models like the Jeep Wrangler JL or Grand Cherokee WL may use a CR2450 or even a rechargeable battery pack. You can check your owner’s manual or open the fob to see the battery number printed on the old cell.
What Batteries Do Jeep Key Fobs Take
This question is common among Jeep owners, and the answer is straightforward once you know your vehicle’s year and trim. Below is a detailed breakdown of battery types for popular Jeep models.
Jeep Wrangler Key Fob Batteries
– **Jeep Wrangler JK (2007–2018):** Uses a CR2032 battery. This is the most common type.
– **Jeep Wrangler JL (2018–present):** Uses a CR2032 battery as well. Some JL fobs with proximity entry may use a CR2450.
– **Jeep Wrangler TJ (1997–2006):** Uses a CR2032 or CR2025, depending on the fob design.
Jeep Grand Cherokee Key Fob Batteries
– **Grand Cherokee WK2 (2011–2021):** Uses a CR2032 battery.
– **Grand Cherokee WL (2022–present):** Uses a CR2450 battery for the larger, premium fob.
– **Grand Cherokee ZJ/WJ (1993–2004):** Uses a CR2025 battery.
Jeep Cherokee Key Fob Batteries
– **Cherokee KL (2014–present):** Uses a CR2032 battery.
– **Cherokee XJ (1984–2001):** Uses a CR2025 battery.
Jeep Compass And Renegade Key Fob Batteries
– **Compass (2017–present):** Uses a CR2032 battery.
– **Renegade (2015–present):** Uses a CR2032 battery.
Jeep Gladiator Key Fob Batteries
– **Gladiator JT (2020–present):** Uses a CR2032 battery.
If you have a keyless entry fob with a flip-out key, the battery is almost always a CR2032. For fobs with a separate key blade, check the battery compartment.
How To Find The Correct Battery For Your Jeep Key Fob
You do not need a mechanic to find the right battery. Follow these steps:
1. **Check the owner’s manual:** Look in the “Maintenance” or “Key Fob” section.
2. **Open the fob:** Use a small flathead screwdriver or a coin to pry open the case. Look at the battery number printed on the old cell.
3. **Search online:** Enter your Jeep’s year, model, and “key fob battery” into a search engine.
4. **Visit a dealer:** If unsure, a Jeep dealership can confirm the battery type for free.
Common Battery Numbers For Jeep Key Fobs
– CR2032 (3V, 20mm diameter, 3.2mm thick)
– CR2025 (3V, 20mm diameter, 2.5mm thick)
– CR2450 (3V, 24.5mm diameter, 5.0mm thick)
These numbers are standard across brands like Duracell, Energizer, Panasonic, and generic brands.
Step-By-Step Guide To Replace Your Jeep Key Fob Battery
Replacing the battery is simple and takes under five minutes. Here is how to do it safely.
Tools You Will Need
– A small flathead screwdriver or a coin
– A replacement battery (CR2032, CR2025, or CR2450)
– A clean, flat surface
Step 1: Locate The Seam On The Fob
Look for a small groove or notch along the edge of the fob. This is where you insert the screwdriver or coin.
Step 2: Pry Open The Fob
Insert the screwdriver or coin into the notch and twist gently. The fob should pop open. Some fobs have a small latch that you press while prying.
Step 3: Remove The Old Battery
Use your fingernail or the screwdriver to lift the old battery out. Note the orientation: the positive side (+) faces up or down, depending on the fob.
Step 4: Insert The New Battery
Place the new battery in the same orientation. Press it down firmly until it clicks into place.
Step 5: Snap The Fob Closed
Align the two halves of the fob and press them together until they snap shut. Test the fob by pressing any button.
What To Do If The New Battery Does Not Work
Sometimes a new battery does not fix the issue. Here are common problems:
– **Battery orientation is wrong:** Flip the battery and try again.
– **Dirty contacts:** Wipe the metal contacts inside the fob with a dry cloth or alcohol wipe.
– **Dead battery from storage:** Some batteries lose charge over time. Try a fresh one from a different pack.
– **Fob is damaged:** Water damage or physical impact can break the fob. You may need a replacement.
How To Test Your Key Fob After Battery Replacement
1. Stand near your Jeep.
2. Press the lock or unlock button.
3. If the lights flash or the doors lock, the fob works.
4. If nothing happens, try the spare fob. If the spare works, the first fob may have internal damage.
Where To Buy Batteries For Jeep Key Fobs
You can find these batteries at most retailers. Here are reliable options:
– **Auto parts stores:** AutoZone, Advance Auto Parts, O’Reilly Auto Parts
– **Hardware stores:** Home Depot, Lowe’s, Ace Hardware
– **Online:** Amazon, eBay, Walmart
– **Electronics stores:** Best Buy, RadioShack (if still open in your area)
Prices range from $2 to $10 per battery, depending on the brand and quantity. Buying a multipack is often cheaper.
How Long Do Jeep Key Fob Batteries Last
Most Jeep key fob batteries last between 2 and 4 years. Factors that affect battery life include:
– How often you use the fob
– Extreme temperatures (hot or cold)
– Proximity to metal objects or other electronics
– If the fob has a keyless entry feature (uses more power)
Signs of a dying battery include reduced range, intermittent response, or the fob only working when very close to the Jeep.
Frequently Asked Questions About Jeep Key Fob Batteries
Can I Use A CR2025 Instead Of A CR2032 In My Jeep Key Fob?
Yes, in most cases. The CR2025 is thinner (2.5mm vs 3.2mm) but has the same voltage and diameter. It may fit loosely, but it will work temporarily. However, the CR2025 has less capacity, so it will die sooner. For best results, use the recommended battery.
What Battery Does A 2023 Jeep Wrangler Key Fob Take?
The 2023 Jeep Wrangler key fob uses a CR2032 battery. This applies to both the standard fob and the proximity entry fob.
Why Does My Jeep Key Fob Still Not Work After Replacing The Battery?
Possible reasons include: incorrect battery orientation, dirty contacts, a damaged fob circuit board, or a dead battery from the package. Try cleaning the contacts and testing with a different battery. If the fob still fails, you may need a new fob or a reprogramming.
Do I Need To Reprogram My Jeep Key Fob After Changing The Battery?
No, you do not need to reprogram the fob. The battery replacement does not affect the fob’s programming. The fob should work immediately after inserting the new battery.
Can I Use A Rechargeable Battery In My Jeep Key Fob?
It is not recommended. Rechargeable batteries have a lower voltage (1.2V vs 3V) and may not power the fob properly. Stick to non-rechargeable lithium coin cells like CR2032.
Tips For Extending Your Jeep Key Fob Battery Life
– Keep the fob away from extreme heat or cold.
– Do not store the fob near metal objects like keys or coins.
– Use the fob buttons gently; hard presses do not help.
– If you have a spare fob, rotate them every few months to balance usage.
– Replace the battery as soon as you notice reduced range.
Common Mistakes When Replacing Jeep Key Fob Batteries
– **Using the wrong battery size:** A CR2025 is thinner and may rattle, causing poor contact.
– **Touching the battery contacts with bare fingers:** Oil from your skin can cause corrosion. Use a cloth or gloves.
– **Forcing the fob open:** Use gentle pressure to avoid cracking the plastic.
– **Not testing the fob before closing:** Always test the fob with the back cover off to ensure the battery works.
When To Replace The Entire Key Fob
If the fob is physically damaged, waterlogged, or the buttons are stuck, a new battery will not help. You can buy a replacement fob online or from a dealer. Aftermarket fobs are cheaper but may require programming. Dealership fobs are pre-programmed but cost more.
Final Thoughts On Jeep Key Fob Batteries
Knowing what batteries do jeep key fobs take saves you time and frustration. Most Jeep models use a CR2032 battery, which is cheap and easy to replace. Always check your specific model before buying. Keep a spare battery in your glove box for emergencies. With the right battery and a few minutes of work, you can get your key fob working again without a trip to the dealer.
If you have a newer Jeep with a push-button start, the fob battery is just as important. A dead battery can prevent the engine from starting, even if the fob is present. Replace the battery every two years to avoid this problem.
Remember to dispose of old batteries properly. Many stores have battery recycling bins. Do not throw them in the trash.
Now you have all the information you need to fix your Jeep key fob. Grab a CR2032 battery and get back on the road.