Toyota Prius
Smart Key Fob Battery Replacement Guide
How to replace the coin cell battery in
the smart key fob remote control of a 3rd generation 2010-2015 Toyota Prius.
 Toyota Prius Smart Key Fob |
 Metal Key Release Button |
 Pull Out Metal Ignition Key |
| This
automotive "how-to" guide was specifically written to assist owners
of the third generation (2010, 2011, 2012, 2013, 2014 & 2015) Toyota Prius
hybrid hatchback in replacing the coin cell battery in the smart key
fob. Owners of the previous 2nd generation 2004-2009 Prius and other Toyota, Lexus or Scion vehicles such as the Yaris, Corolla, Matrix, Camry, Sienna, Avalon, Highlander, RAV4, FJ Cruiser, Venza, 4Runner, Sequoia, Tacoma, Tundra, ES350, IS250, IS350, LS460, GS300, GS350, SC430, RX450h, tC, FR-S, iQ, xD, and xB may also find these DIY instructions to be helpful. A replacement smart key fob battery is part # CR1632 from manufacturers such as Panasonic, Duracell, and Engergizer. The only tool needed to access the battery is a small flathead screwdriver. You could also use a coin, butter knife, nail file or a small plastic pry bar tool. |
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 Locate Notch At Bottom |
 Pry Apart Two Halves |
 Open Smart Key Fob |
| The first step is
to remove the metal ignition key that is stored inside of the smart key fob.
Push in the rubber button located on the left side of the key fob and pull out the metal ignition key from the key ring loop. Insert the blade of the small flathead screwdriver into the notch at the bottom of the key fob where the ignition key used to be and gently pry apart the two halves. |
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 Two Halves Separated |
 Remove Remote Control |
 Circuit Board Removed |
| Set aside the top
half of the key fob that contains the rubber buttons. Lift the green plastic remote control unit circuit board out of the bottom half of the fob. Turn over the remote control unit to access the old key fob battery. |
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 Pry Out Old Battery |
 Panasonic CR1632 3V |
 Insert New CR 1632 Battery |
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| Gently pry out the
old battery with the flathead screwdriver or your fingernail. Try to avoid damaging the metal electrical contact points. Insert a new CR1632 3V coin cell battery into the remote control unit with the "+" positive side facing up. |
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 Fob Battery Replaced |
 Re-Insert Remote Control |
 Bottom Half - Top Half |
| Insert the remote control unit into the bottom cover of the key fob with the battery facing down. | ||
 Lower Top Half |
 Line Up Two Halves |
 Snap Together Key Fob |
| Line up the top
half of the key fob over the bottom half and gently snap them together. Make sure that the two halves of the key fob are flush together all the way around. |
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 Re-Insert Ignition Key |
 Key Fob Re-Assembled |
 Test New Key Fob Battery |
| Re-insert the blade
of the metal ignition key back into the key fob until it snaps into place. Test the new smart key fob battery by standing next to your Prius and pressing the unlock or lock buttons. If the new battery is working properly, you will see the parking lights flash. For more, check out my other
Toyota Prius DIY Repair & Maintenance Guides. |
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