Toyota Prius Key Fob Battery Replacement

2010-2016 Models

This vehicle has multiple key fob types. Select your key below.

Most Common

Smart Key Fob – FCC ID HYQ14AAB (2010–2016)

Battery Type

CR1632

Buy CR1632 on Amazon

✓ OEM Compatible

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Toyota Prius Smart Key Fob – FCC ID HYQ14AAB (2010–2016) Battery Replacement Video

FCC ID: HYQ14AAB, HYQ14ACX

Replacement Steps for Smart Key Fob – FCC ID HYQ14AAB (2010–2016)

Tools needed: Small flathead screwdriver

Take out the emergency key Press or slide the release on the Toyota Prius smart key fob and pull the metal key blade out.

Open the case Fit a small flathead screwdriver into the seam between the two halves and twist gently until the halves separate. Work along the edge instead of forcing one spot.

Mind the circuit board The circuit board can come loose once the case is open. Hold it by its edges and keep fingers off the contacts.

Take out the old battery Note which way the CR1632 faces, then lift it out with a fingernail or a small screwdriver tip.

Fit the new battery Put the new CR1632 in with the positive (+) side facing the same way as the old one, and press it flat into its holder.

Close it up and test Line up the halves and press until they click, slide the emergency key back in, then try lock and unlock from a few feet away.

Alternative

Smart Key Fob – FCC ID HYQ14FBC (2016)

Battery Type

CR2032

Buy CR2032 on Amazon

✓ OEM Compatible

✓ Free Prime Shipping

Toyota Prius Smart Key Fob – FCC ID HYQ14FBC (2016) Battery Replacement Video

FCC ID: HYQ14FBC, HYQ14FLA

Replacement Steps for Smart Key Fob – FCC ID HYQ14FBC (2016)

Tools needed: Small flathead screwdriver

Take out the emergency key Press or slide the release on the Toyota Prius smart key fob and pull the metal key blade out. The slot it leaves is your way into the case.

Open the case Fit a small flathead screwdriver into the notch where the key came out and twist gently until the halves separate. Work along the edge instead of forcing one spot.

Take out the old battery Note which way the CR2032 faces, then lift it out with a fingernail or a small screwdriver tip.

Fit the new battery Put the new CR2032 in with the positive (+) side facing the same way as the old one, and press it flat into its holder.

Close it up and test Line up the halves and press until they click, slide the emergency key back in, then try lock and unlock from a few feet away.

Frequently Asked Questions

What battery does a Toyota Prius key fob use?

It depends on the key: the Smart Key Fob – FCC ID HYQ14AAB (2010–2016) uses a CR1632; the Smart Key Fob – FCC ID HYQ14FBC (2016) uses a CR2032. All are 3-volt lithium coin batteries, available at most grocery stores, pharmacies, and online retailers.

How do I know if my Toyota Prius key fob battery is dying?

Signs your Toyota Prius key fob battery is dying include: reduced range (having to get closer to unlock), intermittent button response, delayed unlocking, the low battery warning on your dashboard, or buttons requiring multiple presses to work.

How long does a Toyota Prius key fob battery last?

A Toyota Prius key fob battery typically lasts 2-4 years depending on usage. Frequent use, extreme temperatures, and proximity to electronic devices can shorten battery life.

Can I replace my Toyota Prius key fob battery myself?

Yes, replacing a Toyota Prius key fob battery is a simple DIY task that takes under 5 minutes. You only need a new CR1632 or CR2032 battery and optionally a small flathead screwdriver. No dealer visit or programming is required.

Do I need to reprogram my key fob after replacing the battery?

No, you do not need to reprogram your Toyota Prius key fob after replacing the battery. The fob retains its programming during battery changes. Simply insert the new battery and test the buttons.

Where can I buy a CR1632 or CR2032 battery?

CR1632 or CR2032 batteries are available at Walmart, Target, CVS, Walgreens, Amazon, auto parts stores like AutoZone and O'Reilly, and most grocery stores. They typically cost $6-12 for a 2-pack.

Toyota Prius Key Fob Battery Replacement

Smart Key Fob – FCC ID HYQ14AAB (2010–2016)

Smart Key Fob – FCC ID HYQ14FBC (2016)

Frequently Asked Questions

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