2026 Toyota Tacoma key fob battery
Correct battery
CR2450
Electronic key · Applies to: United States, Canada
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Electronic key: CR2450
Verified from official source- Battery
- CR2450
- Quantity
- 1
- Polarity
- Insert a new battery with the "+" terminal facing up.
- Markets
- United States, Canada
How to tell if you have this key
- Toyota lists one electronic key battery procedure (the card key is handled by dealers).
- The electronic key holds a mechanical key that you take out first.
Replacement steps (summarised from the manual)
- Take out the mechanical key.
- Remove the cover. Cover the tip of a flathead screwdriver with tape to avoid damaging the key.
- Remove the depleted battery.
- Insert the new battery with the "+" terminal facing up.
Key programming: Not stated in the official source.
Official source
Toyota 2026 Tacoma Owner's Manual USA and Canada Only (OM04051U) — Toyota Motor Sales, U.S.A. (assets.sipb.toyota.com)
2026 model year; publication OM04051U; p. 555, 6-3 Do-it-yourself maintenance › Electronic key battery. Market coverage: United States, Canada. Checked 2026-10-18.
“Use a CR2450 lithium battery”
Key types we could not verify
- Card key (if equipped): Toyota says the card key battery is available only at a Toyota dealer and does not name the cell, so no battery is published for the card key. unavailable
Battery safety
- Keep coin batteries away from children. A swallowed coin cell can cause severe internal burns within hours. If you think a battery has been swallowed or placed in the body, get medical help immediately.
- If the battery compartment does not close securely, stop using the key and keep it away from children.
- Hold the new battery by its edges and avoid touching the circuit board or contacts.
- Replace only with the same type, and recycle the old battery according to local rules.
If the key still doesn't work
- Check the battery orientation and that the cover is fully closed.
- Make sure the new battery is the exact code listed above — similar sizes are not interchangeable.
- If the buttons still do not work, contact a franchised dealer. We do not cover key programming or security systems.