What battery does a Toyota Corolla key fob use?
It depends on the key: the Smart Key Fob – FCC ID HYQ14FBW (2023–2026) uses a CR2450; the Smart Key Fob – FCC ID HYQ14FBN (2023–2024) 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 Corolla key fob battery is dying?
Signs your Toyota Corolla 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 Corolla key fob battery last?
A Toyota Corolla 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 Corolla key fob battery myself?
Yes, replacing a Toyota Corolla key fob battery is a simple DIY task that takes under 5 minutes. You only need a new CR2450 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 Corolla 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 CR2450 or CR2032 battery?
CR2450 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.
