Understanding Your Situation

You still have a working key, but you want an additional spare for backup, a second driver, or to avoid being stranded if the only key is lost or damaged.

🚀 Immediate Steps to Take

  1. Identify your key type: push-button start = smart key fob; turn-key ignition = transponder key (some trims vary).
  2. Gather essentials before you shop: VIN, driver’s license, vehicle registration/proof of ownership, and the working key.
  3. Decide whether you want a full spare (remote + starting capability) or just an emergency mechanical key blade for door access.

Your Options

Toyota dealer: OEM smart key/transponder key (cut + programmed)

Cost: $250-$600 Time: Same day to 1-3 days (depending on parts availability and appointment)

The dealer supplies an OEM Toyota key/fob, cuts the emergency key blade (if applicable), and programs it to your Corolla’s immobilizer and remote functions using Toyota factory tools. This is the most straightforward route for compatibility and warranty support.

âś“ Pros:
  • Highest compatibility and reliability (OEM parts and factory programming)
  • Dealer can verify key type by VIN and handle proof-of-ownership requirements
âś— Cons:
  • Usually the most expensive option
  • May require an appointment and parts may need to be ordered

Automotive locksmith: cut + program (often OEM or high-quality aftermarket)

Cost: $180-$450 Time: Same day (often within a few hours) to 1-2 days

A licensed automotive locksmith can supply and program a compatible smart key/transponder key and cut the blade. Many offer mobile service at your location. Quality varies by brand of fob used and the locksmith’s tooling.

âś“ Pros:
  • Often cheaper than the dealer
  • Convenient mobile service; faster scheduling in many areas
âś— Cons:
  • Aftermarket fobs can be hit-or-miss if low quality
  • Not every locksmith can program all late-model Toyota systems—confirm capability for a 2023 Corolla before booking

Add a low-cost emergency key blade (door key only)

Cost: $20-$80 Time: Same day

For push-button start models, you can cut a mechanical emergency key blade that unlocks the door if the fob battery dies or the fob is lost. This does not start the car unless paired with a programmed smart key present in the vehicle.

âś“ Pros:
  • Inexpensive backup for lockout situations
  • Simple and quick to make
âś— Cons:
  • Will not start the vehicle by itself on smart-key models
  • Still need a programmed key/fob for full backup protection

Buy a key/fob online, then pay for cutting and programming

Cost: $150-$500 (combined) Time: 2-7 days (shipping + appointment)

You purchase a compatible key/fob yourself (OEM or aftermarket), then hire a dealer or locksmith to cut/program it. This can save money, but compatibility and return hassles are common.

âś“ Pros:
  • Potential savings if you source the correct OEM part at a good price
  • More control over brand/condition (new vs used) if you know what you’re buying
âś— Cons:
  • High risk of buying the wrong part number/FCC ID or an incompatible/locked-used fob
  • Some dealers/locksmiths won’t program customer-supplied parts or won’t warranty the work

⚠️ What to Avoid

✕ Waiting until you lose the only working key—adding a spare is typically faster and cheaper while you still have one.

âś• Buying a used smart key fob without confirming it can be re-registered to your vehicle (many used fobs are not reusable or may be locked).

✕ Choosing the cheapest unknown-brand fob—poor-quality aftermarket fobs can have weak range, battery drain, or programming failures.

⚠️ Common Mistakes to Avoid

  • Waiting until emergency
  • Not testing spare immediately
  • Buying incompatible aftermarket
  • Overpaying at dealership

Frequently Asked Questions

Do I need to bring the car to the dealer/locksmith to make a spare key?

Usually yes for programming, because the new key must be registered to the car’s immobilizer/Smart Key system. Many locksmiths can do this mobile; dealers typically require the vehicle on-site.

Can I get a spare if I still have one working key?

Yes—and this is the best time to do it. Having a working key typically makes programming simpler and can reduce labor time compared with an all-keys-lost situation.

How do I know if my 2023 Corolla uses a smart key or a standard transponder key?

If your Corolla has push-button start, it uses a smart key fob. If it has a traditional key cylinder you turn to start, it uses a transponder key. If you’re unsure, a dealer can confirm using your VIN.

Will a cut key blade alone start my Corolla?

On push-button start models, no—the blade is mainly for unlocking the door. On turn-key ignition models, the key must also have a correctly programmed transponder chip to start the engine.

⏱️ Urgency Note: Not an emergency if you still have a working key, but it’s time-sensitive: if the only key is lost or damaged, replacement can become significantly more expensive and may involve towing and longer downtime.

Need Detailed Information?

Get vehicle-specific key fob compatibility, part numbers, and a complete price comparison for your 2023 Toyota Corolla.

View Corolla Key Fob Guide →

Last updated: 2026-01-04