Toyota Sienna 2nd generation (2004–2010) — Key Programming Reference
- Difficulty
- easy
- Lishi / lockout
- TOY43AT
Key fobs & transponder keys (2 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 315 MHz · GQ43VT20T | 2004-2010 NA — all trims with factory keyless entry | GQ43VT20T | 89742-AE010 | none | 315 MHz | CR2032 | n/a |
| transponder · 89785-08020 | 2004-2010 NA — required for engine start (immobilizer) | n/a | 89785-08020 | Texas 4D67 (Crypto ID67, "dot chip") | n/a | n/a | TOY44D / TR47 |
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: No PIN — on-board OBP cycle.
- Online / server access: not required (offline programming).
- On-board (no tool) sequence: possible for this case.
- 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 (Toyota Sienna 2nd gen XL20 2004-2010) spans the Texas 4D67 chip era. On-board programming with existing key + new key sequence (4D67 OBP). Tech Stream or Lonsdor K518 + Toyota OBP cable required. No PIN — uses physical key insertion cycle.
- Variant note: the separate keyless entry fob (GQ43VT20T, chip=none) does not require transponder programming — only the transponder ignition key (variant 1) requires an IMMO tool. CE trims without factory immobilizer do not need transponder programming.
- Post-2024 Autel US firmware: Toyota add-key function may be affected by TMNA restrictions — verify on current firmware.
- All existing keys erased. Bring ALL replacement keys before starting — minimum 2.
- OBD AKL can require dealer-issued PIN (Toyota Techstream + NASTF) or EEPROM dump on some Sienna 2nd gen ECUs — confirm OBD path before quoting AKL job.
- Post-2024 Autel US firmware: Toyota AKL reportedly restricted per TMNA request — verify AKL capability on current firmware before booking.
Lockout
Door pick / decode: Lishi TOY43AT (CW).
51 verified sources · Last verified: 2026-08-06
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.