Hyundai Elantra 6th (AD) (2017–2020) — Key Programming Reference
- Difficulty
- medium
- Lishi / lockout
- HY22
Key fobs & transponder keys (4 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 433.92 MHz · CQOFD00120 | 2017–2020 sedan, push-button start trims | CQOFD00120 | 95440-F2002 | Texas Crypto DST-AES ID8A (Texas H 8A, 128-bit) | 433.92 MHz | CR2032 | HY22 (emergency insert blade) |
| 433.92 MHz · NYOSYEC4FOB1608 | 2018–2020 GT and GT Sport hatchback, push-button start | NYOSYEC4FOB1608 | 95440-G3000 | Texas Crypto DST-AES ID8A (Texas H 8A, 128-bit) | 433.92 MHz | CR2032 | HY22 |
| 433.92 MHz · OSLOKA-423T | 2016–2020 sedan, standard turn-key ignition trims (SE, SEL, Value Edition) | OSLOKA-423T | 95430-F2300 | Hyundai immobilizer transponder | 433.92 MHz | CR2032 | LXP90 (Hyundai HY-series high-security keyway) |
| 433.92 MHz · OSLOKA-450T | 2017–2019 GT hatchback, standard turn-key ignition trims | OSLOKA-450T | 95430-G3100 | Hyundai immobilizer transponder | 433.92 MHz | CR2032 | KK12 |
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: not required (offline programming).
- On-board (no tool) sequence: not available — Hyundai Elantra Texas H 8A 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 (2017-2020) uses Texas H 8A (DST-AES) in a Korean platform — Korean OEM applied a Toyota-style chip. Lonsdor K518 USA + ADP adapter + Toyota H module covers it; Autel IM608 Pro II + IMKPA also supported. Verify the H 8A chip on the specific VIN before quoting — published evidence is thin.
- 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 Texas H 8A smart/remote key — professional tool mandatory.
- AKL for Hyundai-Kia Texas H 8A 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 (CCW).
105 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.