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How to Change the Battery in a Prius Key Fob

A dead key fob battery can leave you stranded, unable to lock, unlock, or even start your Prius. Thankfully, replacing the battery is a quick and easy process you can do yourself, saving you a trip to the dealership. This guide will walk you through the steps for changing your Prius key fob battery like a pro.

What You’ll Need

Before you begin, gather these simple tools:

  • A small flat-head screwdriver: This will be used to pry open the key fob casing.
  • A fresh CR2032 battery: This is the standard battery type for most Prius key fobs. You can find them at most hardware stores, electronics retailers, and online.
  • Optional: A small tray or container: This will help you keep track of the small parts and prevent them from getting lost.

Step-by-Step Guide to Changing Your Prius Key Fob Battery

Follow these simple steps to replace the battery in your Prius key fob:

  1. Locate the release button: Examine your key fob and find the small release button or switch. This is typically located on the back of the fob.

  2. Release the mechanical key: Press the release button and gently slide the mechanical key out of the fob.

  3. Separate the fob halves: With the mechanical key removed, carefully insert the flat-head screwdriver into the seam between the two halves of the key fob. Gently pry the two halves apart. Be careful not to use excessive force, as this may damage the casing.

  4. Remove the old battery: Once the fob is open, you’ll see the CR2032 battery. Note the battery’s orientation for proper replacement. Carefully remove the old battery using the screwdriver or your fingernail. Avoid touching the battery’s flat surfaces.

  5. Install the new battery: Align the positive (+) side of the new CR2032 battery with the positive (+) marking inside the key fob. Gently press the battery into place.

  6. Reassemble the key fob: Align the two halves of the key fob and snap them back together. Make sure they are securely closed.

  7. Reinsert the mechanical key: Slide the mechanical key back into its slot until it clicks into place.

  8. Test the key fob: Check if the key fob functions properly by locking and unlocking your Prius. If the buttons aren’t working, recheck the battery installation and try again.

Still Having Trouble?

If you’ve followed these steps and your Prius key fob still isn’t working, there might be other issues. Here are a few things to consider:

  • Check the battery: Ensure the new battery is indeed fresh and not dead.
  • Examine the battery contacts: Inspect the battery contacts inside the key fob for any dirt or corrosion. Clean them with a cotton swab and rubbing alcohol if necessary.
  • Reprogram the key fob: In rare cases, you might need to reprogram your key fob to your Prius after replacing the battery. Refer to your owner’s manual for instructions on how to do this.
  • Contact a professional: If you’ve exhausted all other options, it’s best to contact a qualified automotive locksmith or dealership for assistance.

Conclusion

Changing the battery in your Prius key fob is a simple DIY task that can save you time and money. By following these easy steps and having the right tools on hand, you can get back on the road with a fully functioning key fob in minutes. Remember, a little preventative maintenance goes a long way!