Open the key fob and remove the old battery
The Volkswagen Atlas key fob splits open along a seam on the side. Look for a thin slot or groove running vertically down the edge of the fob—this is where the two halves separate. Insert a flat tool like a coin, butter knife, or flathead screwdriver into that slot and gently twist to pry the fob apart. Do not force it; a little pressure and a slight rocking motion will pop it open without cracking the plastic.
Once the fob is open, you will see the battery sitting in a small metal holder. The battery is typically a CR2032 coin cell, which is round and flat. Note which side is facing up—the positive side (marked with a + symbol) usually faces toward you. Gently lift the battery out of its holder using your fingernail or a plastic tool. Avoid touching the battery surfaces with bare fingers, as oils can reduce its lifespan.
Key Takeaways
- The Volkswagen Atlas key fob uses a CR2032 coin cell battery that you can buy at any pharmacy, grocery store, or hardware store for a few dollars.
- Open the fob by inserting a flat tool into the seam on the side and gently twisting; do not force it or you may crack the plastic.
- Note which side of the battery faces outward before you remove it, so you can install the new one the same way.
- The entire process takes about two minutes and requires no special tools beyond a coin or flathead screwdriver.
Insert the new battery with the correct orientation
Before you install the new CR2032 battery, check the positive side. The + symbol should be visible on one flat surface. Orient the battery so the positive side faces the same direction as the old battery did. Slide the new battery into the metal holder, pressing gently until it sits flat and find. You should hear or feel a small click as it settles into place.
If the battery does not sit flush or feels loose, remove it and try again. A battery that is not seated properly will not make good contact with the metal terminals, and your key fob will not work. The battery should lie completely flat in its holder with no gaps or tilting.
Close the key fob and test the buttons
Align the two halves of the key fob so the seam matches up evenly. Press them together firmly until you hear a click or feel them snap into place. The fob should close smoothly without gaps. If it does not close all the way, the battery may be sitting too high; open it again and reseat the battery.
Test the key fob by pressing the lock and unlock buttons while standing near your Atlas. You should see the lights flash and hear the locks respond. If nothing happens, open the fob again and check that the battery is seated correctly and facing the right direction. If the fob still does not work after reseating the battery, the battery itself may be defective—try a fresh one from a different package.
Where to buy a CR2032 battery
A CR2032 battery is a standard item sold at pharmacies, grocery stores, drugstores, hardware stores, and online retailers. Common brands include Energizer, Duracell, and store-brand versions. The battery usually costs between one and three dollars. You do not need to buy a Volkswagen-branded battery; any CR2032 coin cell will work in your Atlas key fob.
If you are unsure which battery to buy, show the old battery to a store employee or read the label on the back of your key fob—many fobs print the battery type on the case itself. Buying a pack of two or three batteries is often cheaper per battery than buying a single one, and having a spare on hand means you will not be without a working fob if the battery dies again.
Common mistakes that prevent the fob from working
The most frequent error is installing the battery upside down. If your fob does not work after you close it, open it again and flip the battery 180 degrees. The positive side must face outward toward the button side of the fob. Another common mistake is not pressing the battery down firmly enough; it needs to make solid contact with the metal terminals, so push it down until it stops.
A second issue is closing the fob before the battery is fully seated. If you snap the fob shut and the battery is tilted or sitting high, the plastic case will hold it in the wrong position and it will not work. Always check that the battery lies completely flat before you close the fob. Finally, if you touch the battery surfaces with your fingers, oils and dirt can interfere with electrical contact. Use a clean cloth or your fingernail to handle the battery, and wipe it with a dry cloth before installing it if you have touched it.
When to replace the battery again
A CR2032 battery in a key fob typically lasts between three and four years with normal use. You will know it is time to replace it when the buttons require harder pressing, the fob only works from very close to the car, or the buttons stop responding altogether. Some Atlas owners notice the fob working intermittently—working one day and not the next—which is a sign the battery is nearly dead.
Do not wait until the fob stops working completely to replace the battery. If you notice the buttons becoming less responsive, change the battery right away. A dead fob can leave you locked out of your car, and replacing the battery takes only a couple of minutes. Keep a spare CR2032 battery in your glove box or at home so you can change it when ready if needed.
Frequently Asked Questions
Can I use a different type of battery instead of CR2032?
No. The Volkswagen Atlas key fob is designed specifically for a CR2032 coin cell battery. Other battery types will not fit the holder or will not provide the correct voltage. Always use a CR2032 replacement.
What if the key fob still does not work after I change the battery?
First, open the fob and check that the battery is seated flat and facing the correct direction. If it is, try a different new battery from a different package—the first battery may have been defective. If a fresh battery still does not work, the fob itself may be damaged and may need to be replaced by a Volkswagen dealer.
Do I need to reprogram the key fob after changing the battery?
No. Changing the battery does not erase the fob's programming. Once you install the new battery and close the fob, it 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 from your skin can build up on the battery and reduce its electrical contact with the terminals. If you do touch it, wipe the battery with a clean, dry cloth before installing it.
How much does a CR2032 battery cost?
A single CR2032 battery usually costs one to three dollars depending on the brand and where you buy it. Multi-packs of two or three batteries are often cheaper per battery and give you spares for future use.