Hyundai & Kia Key Fob Replacement: Chips, FCC IDs & OEM Options

Replacing a Hyundai or Kia key fob means identifying which of four transponder families the car uses — ID46 HITAG 2 (roughly 2007–2018), Texas 8A DST AES (2014–2023 Forte, Soul, Elantra, Sonata), ID47 HITAG 3 (2015–2023 Tucson, Sorento, Sportage, Santa Fe, Kona, Palisade, Optima) or the 6A AES chip on the 2021-and-later Elantra — and then matching the FCC ID, the 95440 part number and the frequency (315 or 433/434 MHz). Hyundai and Kia share platforms, so a Kia FCC ID often fits the Hyundai twin, but the 95440 number is what decides the part. This guide covers identification by generation, the FCC IDs by year and model, the programming route, and the Hyundai and Kia parts Car Key Source stocks — including three genuine OEM Hyundai Elantra smart keys.

How to identify the Hyundai or Kia fob generation

The FCC ID prefix on a Hyundai or Kia fob is a reliable era marker: SY5 on the ID46 generation, CQO / CQ0 on the 8A generation, TQ8 on the ID47 generation and NYO on the newest 6A smart keys. The prefix, the ignition style and the chip your programmer reads give you the generation.

The 8A and ID47 generations run in parallel across the 2016–2020 model years, and the same model can switch between them at a facelift. A 2016 Elantra takes the 8A CQOFD00120, while a 2016 Tucson takes the ID47 TQ8-FOB-4F07 — so read the FCC ID on the existing fob and confirm the chip with your programmer rather than assuming by year.

Hyundai and Kia FCC IDs by year and model

Every row is a part in our catalog.

Note the Tucson: three different FCC IDs across 2016–2023 (4F07, 4F11, 4F28) with three different 95440 numbers, and the 2015–2019 flip-key trims on a 4D60 chip. The Tucson hub at /keys/hyundai-tucson lists every variant we carry.

Aftermarket or genuine OEM for Hyundai and Kia?

Most Hyundai and Kia rows in our catalog are aftermarket, cross-referenced to the 95440 or 95430 part number they replace. Three are genuine OEM: the 2021–2024 Hyundai Elantra 5-button smart key (95440-AA000), the 2021–2024 Elantra 4-button (95440-AA100) and the 2021–2023 Elantra 5-button (95440-IB000), all on FCC ID NYOMBEC5FOB2004. Those are the ones to reach for when a dealer-equivalent part is required or when the aftermarket 6A board is not yet proven on the customer's build. The genuine OEM hub is /oem.

Aftermarket on the ID46, 8A and ID47 generations is a mature product and carries our programming guarantee. If a key or remote won't program on the vehicle we listed it against, it is refunded within 30 days of delivery and we pay the return freight. For vehicles where we have no exact 95440 match, the KEYDIY ZB04-4 Kia/Hyundai-style smart key (ID46) and the B16, B20-4, Xhorse XKHY02EN, XKHY05EN and XKHY24EN remotes cover the older remote and flip-key applications on KD and VVDI tools; see the KEYDIY series guide.

How Hyundai and Kia fobs are programmed

• Transponder and flip keys (ID46, 4D60): tool programming through OBD. Most Hyundai and Kia immobilizers require a six-digit PIN tied to the VIN; current Autel, Lonsdor and Xhorse software calculates it, and add-a-key with a working key is usually fast.
• Remote functions on older flip keys and remotes: some 2007–2015 vehicles accept remotes through a tool's "remote learn" function only — there is no reliable onboard procedure on this platform, so plan on the tool.
• Smart keys, all generations (ID46, 8A, ID47, 6A): tool programming only, including add-a-key. Every smart key registered to the car is rewritten in the same session, so gather all working fobs first.
• All keys lost: the same PIN-based route. On 2020-and-later vehicles some tools calculate the PIN online rather than locally, so confirm coverage for the exact model year before you quote.
• Emergency blade: the HY15 or KIA-family blade in the smart key needs cutting to the door code; we stock the KEYDIY HY15 flip blades for universal flip keys.

Programming is tool-dependent enough that we recommend checking your programmer's current Hyundai/Kia list before ordering; choosing a key programmer sets out what each platform covers. A fob that has stopped responding altogether is more often a flat cell than a bad board — how to change the battery in a Hyundai or Kia fob takes two minutes.

What Car Key Source stocks for Hyundai and Kia

Genuine OEM:

• Hyundai Elantra 5-button smart key, 95440-AA000, 2021–2024 (OEM)
• Hyundai Elantra 4-button smart key, 95440-AA100, 2021–2024 (OEM)
• Hyundai Elantra 5-button smart key, 95440-IB000, 2021–2023 (OEM)

Hyundai aftermarket:

• SY5VISMKFNA04 Veracruz smart key, 2007–2012
• SY5HMFNA04 Hyundai/Kia 4-button, 2009–2015
• SY5DMFNA04 Santa Fe / Genesis smart key, 2013–2018 and SY5MDFNA433 Santa Fe, 2015–2018
• TQ8-RKE-4F25 Tucson flip key, 2015–2019
• TQ8-FOB-4F07 Tucson, 2016–2017, TQ8-FOB-4F11 Tucson, 2017–2019, TQ8-FOB-4F11 Tucson, 2019–2021 and TQ8-FOB-4F28 Tucson 7-button, 2022–2023
• TQ8-FOB-4F11 Ioniq, 2017–2019
• CQOFD00120 Elantra, 2016–2019 and CQOFD00120 Sonata, 2017–2019
• TQ8-FOB-4F18 Kona, 2018–2021
• TQ8-FOB-4F19 Santa Fe, 2019–2020 and TQ8-FOB-4F26 Santa Fe, 2021–2022
• TQ8-F08-4F27 Sonata 5-button, 2019–2021
• NYOMBEC5FOB2004 Elantra 5-button aftermarket, 2021–2024

Kia aftermarket:

• NY0SEKSAM11ATX Soul flip key, 2010–2012
• CQOFN00040 Forte, 2014–2016 and CQOFN00100 Forte, 2016–2018
• CQ0FN00100 Soul, 2014–2016 and CQOFN00100 Soul, 2017–2018
• CQOFD00430 Forte / K3, 2018–2023
• TQ8-FOB-4F06 Sorento, 2015–2018 and Sorento, 2019–2020
• TQ8-FOB-4F08 Sportage, 2016–2019
• SY5JFFGE04 Optima / K5, 2016–2020

Universal remotes: KEYDIY ZB04-4 Kia/Hyundai-style smart key, KEYDIY B16 3-button flip, KEYDIY B20-4 remote, Xhorse XKHY02EN and Xhorse XKHY24EN. Make hub: /keys/hyundai.

In-stock orders placed by 4 PM ET (Mon–Fri) leave the warehouse the same business day. US orders ship from our Florida warehouse; Canadian orders ship from Ontario — nothing crosses the border, so there is no customs, duty or brokerage for the buyer. Trade pricing is unlocked with an approved wholesale account — most applications are approved instantly at /apply.

FAQ

Are Hyundai and Kia key fobs interchangeable?

Sometimes, but only when the FCC ID and 95440 part number match — SY5HMFNA04 is listed for both makes, for example. Most smart keys are model-specific even across platform twins, so order by part number rather than by badge.

Does Car Key Source stock genuine OEM Hyundai fobs?

Yes: three genuine OEM Hyundai Elantra smart keys on FCC ID NYOMBEC5FOB2004 — 95440-AA000, 95440-AA100 and 95440-IB000 for 2021–2024 — listed at /oem. Every other Hyundai and Kia part we carry is aftermarket and labelled as such.

Can a Hyundai smart key be programmed without a tool?

No. Hyundai and Kia smart keys, and most of their flip and transponder keys, are registered with an OBD programmer that supplies the vehicle's PIN. There is no onboard procedure for smart keys on this platform.

What chip does a 2018 Hyundai Elantra key use?

The 2016–2019 Elantra smart key (CQOFD00120) uses a Texas RF430 DST AES 8A chip, not the ID47 used in the same year's Tucson. The 2021-and-later Elantra moved to a 6A AES chip on FCC ID NYOMBEC5FOB2004. Verify with your programmer at the 2020 changeover.

Which Tucson fob do I order?

By year and part number: TQ8-RKE-4F25 flip key (95430-D3010) for 2015–2019 keyed trims, TQ8-FOB-4F07 (95440-D3100) for 2016–2017, TQ8-FOB-4F11 (95440-D3110 or D3510) for 2017–2021, and the 7-button TQ8-FOB-4F28 (95440-N9082) for 2022–2023. Read the number on the customer's existing fob at the 2017 and 2019 overlaps.