Hyundai Elantra 7th (CN7) (2021–2026) — Key Programming Reference
- Difficulty
- medium
- Lishi / lockout
- KK12
Key fobs & transponder keys (2 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 433.92 MHz · NYOMBEC5FOB2004 | 2021–2023 NA Elantra CN7 all trims; KR/China Avante & AU i30 Sedan same hardware | NYOMBEC5FOB2004 | 95440-AA000 | HITAG-AES 6A (NCF29A1M / NCF29A2M family) | 433.92 MHz | CR2032 | KK12 (emergency insert blade) |
| 433.92 MHz · NYOMBEC7FOB2208 | 2024–2026 NA Elantra CN7 facelift; KR/China Avante & AU i30 Sedan facelift same hardware | NYOMBEC7FOB2208 | 95440-AA500 | HITAG-AES (6A / 7A family) | 433.92 MHz | CR2450 | KK12 (emergency insert blade) |
Programming procedures
What the job needs
- Add a key: 1 existing working key required.
- All keys lost: no existing working key needed.
- PIN / security code: required — NASTF + Lonsdor K518 + dealer.
- Online / server access: required — Autel/Lonsdor cloud for AES.
- On-board (no tool) sequence: not available — Hyundai Elantra ID47 AES smart/remote key requires professional OBD tool — no self-programming procedure.
- On site: engine off · Maintain 12V+ · Clear IMMO DTCs.
- Bring: Photo ID + vehicle registration. VIN cross-check before start.
Tool coverage
Documented for this case on: Autel IM608 Pro II · Autel IM508S · Autel KM100 · Xhorse Key Tool Plus · Xhorse Key Tool Max Pro · Lonsdor K518 Pro / K519 · OBDSTAR X300 DP Plus · AutoProPad G2/G3 · Advanced Diagnostics Smart Pro · Launch X431 IMMO Elite / IMMO Plus. Step-by-step menu paths for each tool are in the app.
Notes & cautions
- This chassis Hyundai Elantra uses NXP ID47 NCF29A1X HITAG-AES transponder (2021-2026), 128-bit AES — newest Hyundai-Kia security tier. Requires Hyundai-Kia AES token (Autel cloud / Lonsdor K518 USA AES module / Xhorse VVDI 2024+) for cloud-bound seed-code calc. Dealer-bound on some 2024+ VINs. PIN almost always required for AKL.
- Key fob/remote: ensure existing battery is functional before starting.
- Verify chip before booking: ID46 HITAG-2 vs ID47 HITAG-3 vs ID47 AES generations share a fob shell but use different cryptosystems — confirm transponder ID from a working key with Lonsdor K518 reader before quoting.
- Tool kit context: Hyundai-Kia AES token (Autel IMKPA cloud / Lonsdor LKE Smart Key Emulator + K518 USA AES module / Xhorse KH100 token) for newer AES chassis. Autel APB112 simulator NOT typically needed for Korean OBD add-key. XP400 PRO only for damaged Smartra EEPROM fallback. G-Box bench NOT used on this Korean family.
- All existing keys erased. Bring ALL replacement keys before starting — minimum 2.
- No manual AKL for Hyundai Elantra ID47 AES smart/remote key — professional tool mandatory.
- AKL for Hyundai-Kia ID47 AES typically needs Smartra PIN read or Hyundai-Kia AES token — confirm AKL path before quoting.
- Keep all existing/lost key fobs at least 10 metres from vehicle during AKL.
- AKL accessory needs: Autel IMKPA + Hyundai-Kia AES token for cloud calc, Lonsdor LKE Smart Key Emulator for K518 simulated-key AKL path, KH100 token for Xhorse Hyundai/Kia AES. APB112 NOT mandatory. G-Box bench NOT used. XP400 PRO only if Smartra EEPROM is corrupted (rare).
Lockout
Door pick / decode: Lishi KK12 (CCW).
49 verified sources · Last verified: 2026-08-09
Open full case in KeyAssist →Step-by-step tool menu paths, verified source links and video guides for this case are in the KeyAssist app — free to start, works offline.