Open the key fob case without breaking the clips
Most Dodge key fobs split into two halves along a seam that runs around the edge. Look for a small slot or notch on one side—this is where you insert a flat tool to pry the case apart. A flathead screwdriver, a butter knife, or even a coin works. Insert the tool gently into the slot and twist slightly to create a gap, then work your way around the perimeter, lifting a little at each point rather than forcing one spot.
The two halves are held together by plastic clips, not screws. If you hear cracking or feel strong resistance, stop and try a different spot on the seam. The clips are designed to flex, but they can break if you pry too hard in one place. Once you have a gap wide enough to fit your fingernail, you can usually pull the halves apart by hand.
Key Takeaways
- Dodge key fobs use a coin-cell battery, usually CR2032 or CR2025, which you can buy at any drugstore or supermarket for a few dollars.
- The battery sits in a metal holder inside the fob and is held in place by a small metal clip or spring—note which side faces up before you remove it.
- When inserting the new battery, the positive side (marked with a +) must face up toward the front of the fob, or the buttons will not work.
- After closing the fob, test all buttons before you put it away to confirm the battery is seated correctly.
Identify which battery your fob uses
Once the case is open, you will see a round, flat battery sitting in a metal holder. Dodge key fobs typically use either a CR2032 or CR2025 battery. The difference is thickness—CR2032 is slightly thicker. If the old battery is still in place, the part number is printed on the top surface. If it has already fallen out, check the inside of the fob case or the instruction manual that came with your vehicle.
If you cannot find the part number, take a photo of the battery holder or the fob itself and show it to a cashier at a drugstore or auto parts store. They can match it for you. Both battery types cost between $2 and $5, and they are sold in the pharmacy or electronics section of most stores.
Remove the old battery and note its position
The battery sits in a metal holder with a small clip or spring on one side. This clip holds the battery in place and also completes the electrical circuit. Gently lift the edge of the clip with your fingernail or a plastic tool (not metal, which can scratch the circuit board) and slide the old battery out. Do not force it—it should slide out easily once the clip is lifted.
Before you discard the old battery, look at which side was facing up. The top of the battery has a + symbol printed on it. This is the positive terminal, and it must face upward in the new battery as well. If you insert the battery upside down, the fob will not work, and you will have to open it again to flip it.
Insert the new battery with the positive side up
Take the new battery out of its packaging and hold it so the + symbol faces up. Slide it into the metal holder, positioning it the same way the old battery was oriented. Once the battery is in place, press down gently on the clip to find it. You should hear or feel a small click as the clip locks over the battery edge. The battery should not move or rattle when you gently shake the fob.
If the battery does not sit flat or the clip does not catch, remove it and try again. Sometimes the clip needs to be lifted a bit higher to clear the battery edge. Do not force the clip down—if it does not catch smoothly, the battery is probably not positioned correctly.
Close the fob case and test the buttons
Align the two halves of the fob so the seam is even all the way around. Press them together firmly, starting at one end and working toward the other. You should feel the clips snap back into place. If the case does not close flush or you hear cracking, stop and check that nothing is blocking the seam. Once the case is fully closed, the fob should feel solid with no gaps.
Before you put the fob away, test every button—lock, unlock, panic, trunk, or any other function your model has. Press each button several times and listen for the car to respond. If a button does not work, open the fob again and check that the battery is seated properly and the positive side is facing up. A battery that is not fully seated or is inserted backward will cause some or all buttons to fail.
Troubleshoot if the fob still does not work
If you have installed a new battery and the fob still does not respond, the problem is usually one of three things: the battery is not fully seated, the battery is upside down, or the circuit board has been damaged. Open the fob again and check that the battery is flat against the holder and the clip is holding it firmly. Look at the + symbol and confirm it is facing up.
If the battery is positioned correctly and the fob still does not work, inspect the circuit board for visible damage—cracks, corrosion, or bent metal contacts. Light corrosion can sometimes be cleaned with a dry cotton swab, but deep damage usually means the fob needs to be replaced. You can order a replacement fob from a Dodge dealer or a third-party seller online, or have a dealer program a used fob to your vehicle.
Frequently Asked Questions
Can I use a different battery type if I cannot find the exact one?
No. CR2032 and CR2025 are not interchangeable—they have different thicknesses and will not fit properly or make good electrical contact. Always match the part number on the old battery or check your vehicle manual. If you are unsure, ask at a drugstore or auto parts counter.
How long does a key fob battery usually last?
Most key fob batteries last three to four years with normal use. If you use the fob heavily or live in a very hot climate, the battery may wear out sooner. There is no way to predict exactly when it will die, so replace it as soon as the buttons stop responding reliably.
What should I do with the old battery?
Coin-cell batteries can be recycled at most drugstores, supermarkets, and auto parts stores. Many have a battery recycling bin near the checkout or customer service desk. Do not throw the battery in the trash—it contains chemicals that should not go to a landfill.
Do I need to reprogram the fob after changing the battery?
No. Changing the battery does not erase the fob's programming. Once the new battery is installed and working, the fob will function exactly as it did before. You only need to reprogram a fob if you have replaced the fob itself or if the programming has been lost for another reason.
Why did only some of my buttons stop working?
Partial button failure usually means the battery is not making good contact with the circuit board. Open the fob and reseat the battery, making sure it is flat and the clip is holding it firmly. If only one button is broken after the battery is properly installed, the circuit board may be damaged and the fob may need to be replaced.