Open the key fob case without damaging the plastic

Most RAM 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 coin, flathead screwdriver, or plastic spoon works well; avoid anything sharp that will gouge the plastic.

Insert your tool gently into the slot and twist slightly to create a gap. Once you have a small opening, work your way around the edge, lifting a little at each point rather than forcing one spot. The two halves should separate cleanly. If you feel strong resistance, stop and try a different spot along the seam — you may have missed the actual opening point.

Set the metal contact plate and circuit board aside on a clean surface. The battery sits in a small plastic holder, usually held in place by a metal clip or spring. Do not force anything; if a part seems stuck, you have likely not fully separated the case.

Key Takeaways

  • RAM key fobs typically use a CR2032 or CR2025 coin-cell battery, which you can find at any pharmacy, grocery store, or hardware store for a few dollars.
  • The case splits along a seam on the edge — use a coin or plastic tool in the slot to pry it open gently, working around the perimeter rather than forcing one spot.
  • Note which side of the battery faces outward before you remove it, because the new battery must go in the same way or the fob will not work.
  • After inserting the new battery, press the case halves together firmly until they click, then test all buttons on the fob before putting it away.

Identify and remove the old battery

Once the case is open, you will see a small round battery held in place by a metal clip or spring contact. The battery is usually silver-colored and stamped with a code like CR2032 or CR2025. Write down this code or take a photo — you will need to buy the exact same type.

Before you remove the battery, note which side faces up. The positive side (marked with a + symbol) should face outward toward the metal contact. This detail matters: if you install the new battery upside down, the fob will not work and you will have to open it again.

Gently lift the metal clip or spring contact away from the battery, then slide the battery out of its holder. Set the old battery aside — do not throw it away yet, because you may need to check the code again when you buy the replacement.

Buy the correct replacement battery

Take the battery code (CR2032, CR2025, or whatever your fob uses) to a pharmacy, grocery store, or hardware store. These batteries cost between $3 and $8 and are stocked in the watch and electronics section, often near the checkout counter. You can also order them online, but buying in person means you can start using your fob the same day.

If you cannot find the exact code, do not guess. A CR2032 and CR2025 look nearly identical but have different thicknesses, and using the wrong one may prevent the case from closing properly or cause the battery to lose contact with the metal clip. Ask a store employee to help you match the code if you are unsure.

Install the new battery correctly

Remove the new battery from its packaging and check that it is clean and dry. Slide it into the battery holder with the positive side (the + symbol) facing outward, toward the metal contact clip. This is the opposite of how you might expect — the flat side goes in first, the rounded side faces the clip.

Once the battery is seated in the holder, gently press the metal clip or spring contact back down over the battery. You should hear or feel a small click as the contact makes contact with the battery. Do not force it; if the clip does not move smoothly, the battery may be installed backward or not fully seated.

Close the case and test the fob

Align the two halves of the case so the seams match up evenly. Press them together firmly and evenly around the entire edge until you hear a click or feel them snap into place. The case should be flush with no gaps. If there are gaps, the battery may not be making good contact or the case may not be aligned correctly — open it again and check.

Once the case is closed, test every button on the fob: lock, unlock, panic, and any others your RAM model has. Press each button several times and watch your vehicle to confirm the lights flash or the doors respond. If nothing happens, open the case again and verify that the battery is seated correctly and the metal contact is pressing down on it.

Troubleshoot if the fob still does not work

If the fob does not work after you install the new battery, the most common cause is that the battery is installed backward or not making contact with the metal clip. Open the case again and check that the positive side of the battery faces the metal contact. Press the contact down firmly to may support it is touching the battery.

A second possibility is that the circuit board or metal contacts are dirty. If you see any corrosion, discoloration, or debris on the contacts, wipe them gently with a dry cloth or a cotton swab. Do not use water or cleaning fluid — moisture can damage the circuit board.

If the fob still does not work after you have checked the battery direction and cleaned the contacts, the circuit board itself may be damaged. In that case, you will need to have the fob replaced by a RAM dealer or a may have access to locksmith.

Frequently Asked Questions

What type of battery does a RAM key fob use?

Most RAM key fobs use either a CR2032 or CR2025 coin-cell battery. The exact type depends on your model year and fob design. Check the old battery or your owner's manual to find out which one you need.

How long does a key fob battery last?

A typical key fob battery lasts between three and four years with normal use. If you use your fob frequently, the battery may wear out sooner. Replace it as soon as you notice the buttons require harder pressing or the fob only works from very close to your vehicle.

Can I use a different brand of battery?

Yes. As long as the battery code is the same (CR2032, for example), any brand will work. Store brands and name brands perform equally well for key fob use.

What should I do with the old battery?

Do not throw coin-cell batteries in the trash. Take them to a pharmacy, electronics store, or hazardous waste collection site in your area. Many retailers that sell batteries also accept old ones for recycling at no cost.

Why does my fob still not work after I changed the battery?

The most common reason is that the battery is installed upside down or not making full contact with the metal clip. Open the case and verify the positive side of the battery faces the metal contact. If the contacts look dirty or corroded, wipe them with a dry cloth. If the fob still does not work, the circuit board may be damaged and the fob may need to be replaced.