2023 Toyota Corolla key fob battery

Correct battery depends on your key type
CR2032
Key with wireless remote (no smart key system) — Your Corolla starts by inserting the key into the engine (ignition) switch.
Buy CR2032 on Amazon

Affiliate link. Amazon may open your local store (for example amazon.co.uk) through Amazon OneLink. Disclosure

Other cars that use CR2032

CR2450
Electronic key (smart key system) — Your Corolla has a push-button engine switch and starts while the electronic key is inside the car (smart key system).
Buy CR2450 on Amazon

Affiliate link. Amazon may open your local store (for example amazon.co.uk) through Amazon OneLink. Disclosure

Other cars that use CR2450

Applies to: United States

This model year has 2 key types with different batteries. Check which key you have before buying — the details for each are below.

Electronic key (smart key system): CR2450

Verified from official source
Battery
CR2450
Quantity
1
Polarity
Insert a new battery with the "+" terminal facing up.
Markets
United States

How to tell if you have this key

  • Your Corolla has a push-button engine switch and starts while the electronic key is inside the car (smart key system).
  • The electronic key holds a mechanical key that you remove by releasing a lock.

Replacement steps (summarised from the manual)

  1. Release the lock and remove the mechanical key.
  2. Remove the key cover. Cover the tip of a flathead screwdriver with a rag to avoid damaging the key.
  3. Remove the depleted battery using a small flathead screwdriver. If the electronic key module sticks to the cover, remove the module to reach the battery.
  4. Insert the new battery with the "+" terminal facing up.
  5. Refit the key cover and mechanical key in reverse order, then check that the lock/unlock buttons work.

Key programming: Not stated in the official source.

All three 2023 production-period editions (through Mar. 2023, Apr.–May 2023, from June 2023) state the same batteries.

Official source
Toyota 2023 Corolla Owner's Manual, through Mar. 2023 production (OM02525U) — Toyota Motor Sales, U.S.A. (assets.sipb.toyota.com)
2023 model year, vehicles produced through March 2023; publication OM02525U; pp. 333–335 (Wireless remote control/electronic key battery). Market coverage: United States. Checked 2026-10-18. Archived copy of the same manufacturer file (Internet Archive, for access only).
“Use a CR2032 (vehicles without a smart key system), or CR2450 (vehicles with a smart key system) lithium battery”
Also confirmed by: Toyota 2023 Corolla Owner's Manual, Apr.–May 2023 production (OM02568U); Toyota 2023 Corolla Owner's Manual, from June 2023 production (OM02695U)

Key with wireless remote (no smart key system): CR2032

Verified from official source
Battery
CR2032
Quantity
1
Polarity
Insert a new battery with the "+" terminal facing up.
Markets
United States

How to tell if you have this key

  • Your Corolla starts by inserting the key into the engine (ignition) switch.
  • The key itself has remote lock/unlock buttons (Toyota calls it a key with a wireless remote control function).

Replacement steps (summarised from the manual)

  1. Remove the key cover. Cover the tip of a flathead screwdriver with a rag to avoid damaging the key.
  2. Remove the battery cover (lift the edge if it is difficult to remove).
  3. Remove the depleted battery using a small flathead screwdriver.
  4. Insert the new battery with the "+" terminal facing up.
  5. Install the battery cover with the tab facing up, pushing the entire edge into the key.
  6. Install the key cover, pressing it straight in so there are no gaps, then check that the lock/unlock buttons work.

Key programming: Not stated in the official source.

All three 2023 production-period editions (through Mar. 2023, Apr.–May 2023, from June 2023) state the same batteries.

Official source
Toyota 2023 Corolla Owner's Manual, through Mar. 2023 production (OM02525U) — Toyota Motor Sales, U.S.A. (assets.sipb.toyota.com)
2023 model year, vehicles produced through March 2023; publication OM02525U; pp. 333–335 (Wireless remote control/electronic key battery). Market coverage: United States. Checked 2026-10-18. Archived copy of the same manufacturer file (Internet Archive, for access only).
“Use a CR2032 (vehicles without a smart key system), or CR2450 (vehicles with a smart key system) lithium battery”
Also confirmed by: Toyota 2023 Corolla Owner's Manual, Apr.–May 2023 production (OM02568U); Toyota 2023 Corolla Owner's Manual, from June 2023 production (OM02695U)

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.

Other Toyota Corolla years

Other Toyota models

Use the finder for another vehicle →