Open the key fob case without breaking it
Most Dodge key fobs split into two halves along a seam that runs around the edge. Look for a small slot or groove on the side of the fob — this is where you insert a flat tool to pry the case apart. A flathead screwdriver, a coin, or a plastic pry tool all work. Insert the tool gently into the slot and twist slightly; the case will pop open without force.
Some newer Dodge fobs have a small button or latch on the back that you press to release the battery cover, rather than a seam. Check the back of your fob first — if you see a button or tab, press or slide it and the cover will come free. If your fob has neither a visible seam nor a button, consult your vehicle's owner manual, as some models use a different design.
Once the case is open, you will see the battery sitting in a metal holder. Note which side of the battery faces up — the positive (+) side or the negative (−) side. This matters when you install the new battery.
Key Takeaways
- Dodge key fobs use either a CR2032 or CR2025 battery; check your current battery or owner manual to confirm which one you need.
- Open the fob case by inserting a flathead screwdriver or coin into the seam and twisting gently, or by pressing a release button on the back if your model has one.
- Note which side of the old battery faces up before you remove it, so you install the new battery in the same direction.
- After inserting the new battery, close the case firmly until you hear or feel a click, then test the fob on your vehicle before leaving the store.
Identify the correct battery size for your Dodge
Dodge key fobs most commonly use a CR2032 battery, which is a coin-cell battery about the size of a dime. Some older or less common Dodge models use a CR2025, which is slightly thinner. The easiest way to know which one you need is to look at the battery you just removed — the size is printed on it. If you have already thrown it away, check your vehicle's owner manual or call your Dodge dealership with your vehicle's year and model.
You can buy CR2032 or CR2025 batteries at any pharmacy, supermarket, hardware store, or big-box retailer. They cost between $3 and $8 for a single battery, or less if you buy a pack of several. Do not buy the cheapest option you find — a quality battery from a known brand will last longer and perform more reliably in your fob.
Remove the old battery and insert the new one
Gently lift the old battery out of its metal holder using your fingernail or a plastic tool. Do not use a metal screwdriver, as you can scratch the inside of the fob or damage the battery holder. Once the old battery is out, dispose of it properly — many pharmacies and retailers have battery recycling bins near the checkout.
Before you touch the new battery, wash your hands or wipe them dry. Oils from your skin can interfere with the battery's contact with the metal holder. Slide the new battery into the holder with the positive (+) side facing the same direction as the old battery was facing. Press down gently until the battery sits flat and makes contact with the metal holder.
Close the case and test the fob
Align the two halves of the fob case and press them together firmly until you hear or feel a click. The seam should be flush all the way around — if there is a gap anywhere, the case is not fully closed and may come apart in your pocket. If your fob has a button or latch on the back, press or slide it back into place.
Stand near your vehicle and press each button on the fob — lock, unlock, panic, or trunk, depending on what your fob controls. The vehicle should respond when ready. If nothing happens, open the fob again and check that the battery is sitting flat in the holder and facing the correct direction. If the fob still does not work after you have reseated the battery, the battery may be defective or the fob may have another problem; try a different battery from a different package before assuming the fob is broken.
When to replace the battery again
A new CR2032 or CR2025 battery typically lasts three to four years in a key fob, depending on how often you use it. You will notice the fob starting to fail when you have to press the buttons harder or stand closer to your vehicle for it to respond. At that point, the battery is running low and you should replace it using the same steps above.
If you replace the battery and the fob still does not work, or if it stops working again within a few months, the problem may be inside the fob itself — a broken button, a loose wire, or corrosion on the battery contacts. At that point, you will need a replacement fob from your Dodge dealership or an aftermarket supplier.
Frequently Asked Questions
Can I use a different type of battery in my Dodge key fob?
No. CR2032 and CR2025 are the only batteries designed to fit Dodge key fobs, and they are not interchangeable with each other. Using the wrong size will either not fit or will not make proper contact with the holder. Stick to the battery type printed on your old battery or listed in your owner manual.
What if I put the battery in backwards?
The fob will not work at all. Open the case again and flip the battery so the positive (+) side faces the same direction as before. The battery holder is designed to work only one way, so reversing it breaks the circuit.
Do I need to reprogram my fob after changing the battery?
No. Changing the battery does not erase the fob's programming. Once you close the case and the new battery makes contact, the fob should work when ready without any reprogramming steps.
Is it safe to touch the battery with my bare hands?
It is safe, but not ideal. Oils and moisture from your skin can corrode the battery contacts over time. Wash your hands or dry them before handling the new battery, and avoid touching the flat metal surfaces on the top and bottom of the battery.