Infiniti M37/M56 4th (Y51) (2011–2013) — Key Programming Reference
- Difficulty
- medium
- Lishi / lockout
- NSN14
Key fobs & transponder keys (1 variant)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 433.92 MHz · CWTWB1U787 | 2011-2013 (all NA M37/M56 trims + 2013 M35h hybrid); EU launched Geneva 2010 | CWTWB1U787 | 285E3-1MP0D | PCF7952 (HITAG2/ID46) | 433.92 MHz | CR2025 | NSN14 |
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: NATS PIN tool-side via OBD.
- Online / server access: not required (offline programming).
- On-board (no tool) sequence: not available — Infiniti M37 / M56 NATS ID46 requires professional OBD tool — no self-programming procedure for this transponder family.
- On site: engine off · Maintain 12V+ · Clear NATS 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 Infiniti M37 / M56 uses Philips PCF7952 / PCF7953 (ID46 HITAG-2) with NATS-5/6 immobilizer (2011-2013). Covered by Lonsdor K518 USA + Nissan adapter, Autel IM608 Pro II + IMKPA Nissan module (~$5-10/session), Xhorse VVDI Key Tool Plus + KH100, OBDSTAR X300 DP Plus Nissan menu. PIN read tool-side via OBD — NASTF not required.
- Smart proximity or remote head key: ensure existing key fob battery is functional before starting.
- Verify chassis NATS generation before booking: NATS-3/4 (Texas 4D60, pre-2003 typical), NATS-5/6 (PCF7952 ID46, 2003-2013 typical), HITAG-AES (4A chip, 2014+ typical) — confirm transponder ID from a working key with Lonsdor K518 reader. Facelift mid-cycle chip swaps documented on Altima, Sentra, Pathfinder — verify chip before ordering blanks.
- Tool kit context: Autel IMKPA Nissan module ($5-15/session) and Lonsdor LKE Smart Key Emulator for K518 simulated-key flow are the dominant add-key accessories. Xhorse VVDI Key Tool Plus + KH100 Nissan module also confirmed. APB112 simulator, G-Box bench EEPROM NOT required for OBD-only NATS add-key. XP400 PRO only for damaged BCM EEPROM fallback.
- All existing keys erased. Bring ALL replacement keys before starting — minimum 2.
- No manual AKL for Infiniti M37 / M56 NATS-5/6 ID46 — professional tool mandatory.
- AKL via OBD — PIN read tool-side; NASTF not required for NATS-5/6 era.
- Keep all existing/lost key fobs at least 10 metres from vehicle during AKL.
- AKL accessory needs: Autel IMKPA + Nissan AES token for cloud calc on HITAG-AES VINs, Lonsdor LKE Smart Key Emulator for K518 simulated-key AKL path, Xhorse KH100 Nissan token. APB112 NOT mandatory. G-Box bench EEPROM NOT used. XP400 PRO only if BCM EEPROM corrupted (rare).
Lockout
Door pick / decode: Lishi NSN14 (CW).
28 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.