Nissan 240SX 2nd (S14) (1995–1998) — Key Programming Reference
- Difficulty
- easy
- Lishi / lockout
- NSN14
Key fobs & transponder keys (2 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 315 MHz · KOBUTA3T | 1998 MY (post-KOBUTA3T grant, Apr 1 1998); optional RKE package only | KOBUTA3T | 28268-2Z021 | none | 315 MHz | CR2025 | n/a |
| mechanical · DA31/X210/NSN11 | 1995-1998 NA (1995-1999 across the DA31 fitment window) — all trims | n/a | n/a | none | n/a | n/a | DA31 / X210 (Silca NSN11, JMA DAT-22) — 8-cut Nissan/Infiniti keyway |
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 — Nissan 240SX NATS 4D60 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 Nissan 240SX uses Texas 4D60 (NATS-3 / NATS-4 era, 1995-1998). Older fixed-code Texas chip — Lonsdor K518 USA + Autel IM608 Pro II + IMKPA Nissan + Xhorse VVDI Key Tool Plus all cover via OBD. Some 1995-2000 chassis (Quest V41, Pathfinder R50, Sentra B14/B15, 240SX) require BCM bench EEPROM dump as fallback when BCM PIN access blocked over OBD.
- 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 Nissan 240SX NATS-3/4 Texas 4D60 — professional tool mandatory.
- Older 1990s chassis sometimes need BCM bench EEPROM dump if OBD access blocked. Allow 30-60 min on tricky VINs.
- 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).
37 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.