Hyundai Nexo FCEV 1st generation (2019–2025) — Key Programming Reference
- Difficulty
- expert
- Lishi / lockout
- HY22
Key fobs & transponder keys (3 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 433.92 MHz · TQ8-FOB-4F20 | 2019–2025 Nexo FCEV (4-button, no parking assist) | TQ8-FOB-4F20 | 95440-M5300 | ID47 (Hitag3 NCF29A1X / PCF7938X family) | 433.92 MHz | CR2032 | HY22 / TOY49 emergency insert blade (Silca) |
| 433.92 MHz · TQ8-FOB-4F21 | 2019–2025 Nexo FCEV (4-button; commonly retailed as the 2022+ service key) | TQ8-FOB-4F21 | 95440-M5310 | ID47 (Hitag3 AES NCF29A1X) | 433.92 MHz | CR2032 | LXP90 |
| 433.92 MHz · 95440-M5000 | 2019–2025 Nexo FCEV (parking-assist equipped) | TQ8-FOB-4F20 | 95440-M5000 | ID47 (Hitag3 NCF29A1X / NCF29AxX) | 433.92 MHz | CR2032 | HY22 |
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: Smartra PIN via K518.
- Online / server access: not required (offline programming).
- On-board (no tool) sequence: not available — Hyundai Nexo ID47 HITAG-3 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 Nexo uses NXP/Philips ID47 PCF7938X / NCF2952X HITAG-3 transponder (2019-2025). HITAG-3 covered by Lonsdor K518 USA + Hyundai-Kia adapter, Autel IM608 Pro II + IMKPA token, Xhorse VVDI Key Tool Plus 2024+ firmware. Hyundai/Kia 2018+ often dealer-bound on AKL — verify before quoting. No XP400 PRO bench needed for OBD-only add-key.
- 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 Nexo ID47 HITAG-3 smart/remote key — professional tool mandatory.
- AKL for Hyundai-Kia ID47 HITAG-3 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 HY22 (CW).
57 verified sources · Last verified: 2026-08-10
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.