Hyundai Sonata 4th (EF) (1999–2005) — Key Programming Reference
- Difficulty
- easy
- Lishi / lockout
- HY16
Key fobs & transponder keys (3 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 311 MHz · PINHACOEF311T | 2001–2005 NA — trims with factory keyless entry | PINHACOEF311T | 95430-3D201 | none | 311 MHz | CR2032 | n/a |
| transponder · 81996-38010 | 1999–2005 — EU / Asia-Pacific (Australia, India, China, Korea) immobilizer-equipped | n/a | 81996-38010 | Texas Crypto 4D60 (ID4D60, 80-bit; JMA TPX2 / TP19) | n/a | n/a | HY14 / HYN7R |
| mechanical · 81996-38000 | 1999–2005 NA — all US/Canada trims (no factory immobilizer) | n/a | 81996-38000 | none | n/a | n/a | HY14 / HY-6D.P1 / HYN7R |
Programming procedures
What the job needs
- Add a key: no existing working key needed.
- All keys lost: no existing working key needed.
- PIN / security code: No PIN — mechanical only.
- Online / server access: not required (offline programming).
- On-board (no tool) sequence: possible for this case.
- On site: engine off · Maintain 12V+ · No DTC scan needed.
- 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 Sonata (1999-2005) is pre-immobilizer — no transponder chip. The blade alone starts the vehicle. Locksmith cuts to OEM code from VIN or existing key. No chip-programming tools needed. Remote (if equipped) learned via in-vehicle key sequence per OEM service manual.
- Key/remote: ensure existing battery (if applicable) is functional before starting.
- Tool kit context: Lonsdor K518 USA + Autel IM608 Pro II + IMKPA can reprogram remote-function radio for pre-immobilizer cars if equipped. APB112 simulator, G-Box bench EEPROM, XP400 PRO, LKE Smart Key Emulator NOT applicable to mechanical-only chassis.
- Verify chip before booking (this chassis facelift): mechanical-only pre-immobilizer chassis. Some 1996-1999 facelift versions added transponder mid-cycle — confirm key has no chip with Lonsdor K518 reader before quoting.
- Hyundai Sonata pre-immobilizer — no chip-level AKL. Mechanical AKL via lock cylinder rekey or new ignition cylinder if lost lock.
- Bring ALL replacement remotes (if equipped) before starting in-vehicle programming sequence.
- No professional tool needed for blade — only locksmith cut. Remote-only AKL via in-vehicle key dance.
Lockout
Door pick / decode: Lishi HY16 (CW).
37 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.