2023 Hyundai Santa Fe Key Replacement in Los Angeles

The 2023–2025 Santa Fe uses the same key setup, so everything on this page applies to those years too. The full picture is on the Hyundai Santa Fe key guide.

2023 Hyundai Santa Fe: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: 4A (Hitag AES)
Programming: OBD
All keys lost: We can originate new keys on site

Facelifted TM, off the anti-theft list (immobilizer standard). 2023 fob listings show the Hitag-AES 4A chip and a 2023 all-keys-lost is documented via Autel IM608 over OBD with on-tool PIN read (no third-party pin pull); some catalogs still list ID47 for 2023 — the fob part number decides. Lower trims may retain a bladed ignition; confirmed on the car.

What key does the 2023 Santa Fe use, and what does that mean for you?

The 2023 Santa Fe is the facelifted generation, and it is a smart-key car. The fob stays in your pocket, the car senses it, and you start the engine with a push-button. Inside the fob is a 4A chip, the Hitag AES family. The immobilizer is standard on this year, so a fob that is merely cut or cloned badly will not start the car. It has to be programmed to the vehicle.

Every one of these fobs also carries a mechanical backup key hidden in the shell. That detail matters more than people expect. If the fob goes quiet, the blade still opens the driver's door, so a weak fob is an inconvenience rather than a lockout.

Three problems come up most often with this setup:

A dead fob battery. The dash reports a 'key not detected' message while the emergency blade still opens the door. Start with a fresh battery before assuming the fob has failed.
A lost fob. Replacing a smart fob costs more than replacing a bladed key, and an all-keys-lost situation needs professional programming.
Worn buttons and cracked shells. The electronics inside are often fine, and the wear is only cosmetic or mechanical, so tell us what you are seeing before you buy a whole new fob.

Duplicate key or all keys lost: how does each work on this Santa Fe?

These are two different jobs, and the difference decides how your day goes. Making an additional fob is the simpler path, but it requires an original key that works. If you still have one fob, call us before you lose it too.

Duplicate with a working fob: we bring the original, confirm the correct replacement fob for your vehicle, and program the new one to the car over the OBD port.
All keys lost: this is possible on the 2023 Santa Fe. The documented procedure runs through the OBD port with a professional programming tool that reads the security PIN on the tool itself, with no third-party PIN pull needed.
Either way, no NASTF SDRM access is required for programming this year, so we are not waiting on a separate secure-data unlock to get started.
Last, we test everything: push-to-start, door entry, the buttons, and the emergency blade, before you drive away.

What affects the cost of a 2023 Santa Fe key?

We do not quote numbers on a web page, because the real figure depends on your situation. Here is what moves it:

Duplicate or all keys lost. Having a working original to copy from is usually the more economical route. All-keys-lost takes more steps.
The fob itself. The correct fob is decided by part number, and the part you need depends on your trim and the car's setup.
Where the work happens. Our mobile vans can come to you, or you can come to our Westwood storefront. If the car is stuck where it can't be driven, mobile is often the practical choice.
Shell and button repair versus a new fob. If the electronics work, repairing a cracked shell or worn buttons is generally the lighter-cost option than replacing the whole fob.
Trim level. Lower trims may keep a bladed ignition rather than push-to-start, which changes the key and the process.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

What we confirm in person rather than guess

Catalog data for this year does not agree with itself. The 2023 fob listings we trust show the Hitag AES 4A chip, but some catalogs still list the older ID47 chip for 2023. In practice the fob part number decides, and we check it against your VIN and the car in front of us rather than going by a listing.

The same goes for trim. Lower trims of the Santa Fe may retain a bladed ignition, and we confirm that on the car. If you tell us your trim, the VIN, and what is happening, we can usually narrow things down on the phone, but we make the final call with the vehicle in hand.

For model-wide background, see our Hyundai Santa Fe key page or the broader Hyundai key replacement guide.

Why call Wilshire Lock & Key for this

We have been in business since 1987, with a storefront at 10740 Wilshire Blvd in Westwood and mobile vans that serve 140 cities across Los Angeles and Ventura counties. When you call, you reach us, not a dispatch middleman who passes the job to a stranger. David, the owner and lead technician, oversees the work.

Phones are answered 24 hours a day, 7 days a week, at (213) 577-1366. If you want to describe the situation in writing, use our contact page. You can also browse all the makes we handle under car keys.

One more thing worth doing with any locksmith: California requires locksmith companies to hold a BSIS LCO license, and you should ask to see it before work starts.

Frequently asked questions

What kind of key does a 2023 Hyundai Santa Fe use?

It uses a smart proximity key with push-to-start and a 4A (Hitag AES) chip. A mechanical emergency blade is built into the fob. Some lower trims may keep a bladed ignition, which we confirm on the car.

My Santa Fe says 'key not detected'. Is the fob broken?

Often it is just a dead battery. The emergency blade will still open the door even when the fob is dead. Try a fresh battery first. If the message continues, bring the fob in and we will test it.

Can you make a key if I lost every fob?

Yes. All-keys-lost is possible on the 2023 Santa Fe. It is programmed over the OBD port with a professional tool that reads the PIN itself, and no NASTF SDRM access is required.

Do I need my original key to get a spare?

To copy a fob, yes. Duplication needs a working original. If you have lost every key, the job becomes an all-keys-lost programming job instead.

Is the chip an ID47 or a Hitag AES 4A?

For 2023, the fob listings we rely on show the Hitag AES 4A chip, but some catalogs still list ID47. The fob part number settles it, so we check it against your VIN before ordering.

Can you come to me, or do I have to bring the car in?

Both options exist. We run mobile vans and have a storefront at 10740 Wilshire Blvd in Westwood. Mobile service makes sense if the car cannot be driven.

Can a cracked fob shell or worn buttons be fixed without a new fob?

Frequently yes, if the electronics inside still work. That is usually the lighter-cost option compared with replacing the whole fob. We look at it first and tell you which makes sense.

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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.