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How to Replace the Battery of a Key Fob for Your Tesla

Tesla that can be opened with key fob

By: Otaiba Ahsan

Your Tesla key fob, like most fobs, is designed for convenience. It allows you to lock, unlock, open the trunk, and more, just with a click. But like any battery-powered device, it won’t last forever. If you’ve noticed reduced range or unresponsive buttons, it’s probably time for a quick battery replacement. Continue reading for steps on how to replace the battery of a key fob for your Tesla.

Replacing the Key Fob Battery

Under normal use, the key fob battery should last for up to one year. Also, depending on the version you have and the selected vehicle settings, when the battery is low, a message will display on the touchscreen.

To replace the battery in your key fob, follow the steps below:

  1. Open Cover: Place the key fob button side down on a soft surface, then release the bottom cover using a small flat-bladed tool.
  2. Remove Battery: Lift the battery away from the retaining clips to remove it.
  3. New Battery: Insert the new CR2032 battery with the + side facing up.
  4. Attach Cover: Holding the bottom cover at an angle, align the tabs on the cover with the corresponding slots on the key fob, and press firmly onto the fob until it snaps into place.

NOTE: See our detailed guide on how to use the key fob for your Tesla.

Adding a Key Fob from the Touchscreen

So long as you already have a key card or key fob that is already paired with your car, you can pair a new key using the touchscreen. When in your vehicle, follow these steps:

  1. Controls: When in your car, tap Controls > Locks > Keys > Add Key.
  2. Scan: Scan your new key card or key fob on the card reader located on either wireless phone charger. When you hire a chime, that means it has been recognized.
  3. Confirm: Scan a key card or key fob that has already been paired to the vehicle to confirm the new key pairing.
  4. Complete: When complete, the key list includes the new key. Touch the associated pencil icon to customize the name of the key.

NOTE: You can also add keys from the mobile app. See our complete guide on how to add keys from the mobile app of your Tesla.

The Bottom Line

The steps on how to replace the battery of a key fob for your Tesla are simple. Grab your key fob, open the cover on the bottom and remove the battery. Next, insert the new CR2032 battery with the + side facing up, and attach the cover once again.