Lincoln MKX / Nautilus 2nd gen (2016–2023) — Key Programming Reference
- Difficulty
- medium
- Lishi / lockout
- FO38
Key fobs & transponder keys (3 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 902 MHz · M3N-A2C31243300 | 2016 NA (early production; shared Ford/Lincoln corporate fob) | M3N-A2C31243300 | 164-R7989 | Texas ID49 (NXP HITAG-PRO 128-bit) | 902.375 / 903.425 MHz | CR2025 | HU101 (emergency blade) |
| 902 MHz · M3N-A2C940780 | 2017-2021 NA (MKX 2017-2018, Nautilus 2019-2021) | M3N-A2C940780 | 164-R8154 | NXP HITAG-Pro ID49 (128-bit) | 902.375 / 903.425 MHz | CR2450 | HU101 |
| 902 MHz · M3N-A3C054339 | 2022-2023 NA (Nautilus, final ICE model years) | M3N-A3C054339 | 164-R8321 | NXP HITAG-PRO ID49 (128-bit) | 902.375 / 903.425 MHz | CR2450 | HU101 (emergency blade) |
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 + autokeyprog + FORScan.
- Online / server access: required — Cloud token for ID49 PATS 7.
- On-board (no tool) sequence: not available — Lincoln MKX / Nautilus PATS 7 ID49 requires professional OBD tool — no self-programming procedure.
- On site: engine off · Maintain 12V+ · Clear PATS 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 Lincoln MKX / Nautilus uses NXP HITAG-PRO ID49 128-bit (Ford PATS 7, 2016-2023). ID49 covered by Autel IM608 Pro II + IMKPA Ford cloud token (~$5-15/session), AD Smart Pro ADS178 Ford, Lonsdor K518 USA + Ford online module, Xhorse VVDI Key Tool Plus + KH100 Ford. PATS PIN via FORScan license / autokeyprog.com / NASTF locksmith database.
- Smart proximity or remote head key: ensure existing key fob battery is functional before starting.
- Verify chip before booking (this chassis facelift): Ford modern PATS spans PATS 5/6 ID46 HITAG-2 (2011-2014 typical) and PATS 7 ID49 HITAG-PRO (2014+). Some 2014-2015 facelifts shipped with mid-cycle chip swap — confirm transponder ID from a working key with FORScan or Lonsdor K518 reader before quoting.
- Tool kit context: Autel IMKPA Ford module is the dominant add-key accessory (~$5-15/session for ID49 cloud calc). AD Smart Pro ADS178 also strong on Ford. Lonsdor LKE Smart Key Emulator for K518 simulated-key flow. Xhorse KH100 + Ford module confirmed. APB112 simulator NOT typically needed. G-Box bench EEPROM NOT used. XP400 PRO only for PCM/IPC bench fallback.
- All existing keys erased. Bring ALL replacement keys before starting — minimum 2.
- No manual AKL for Lincoln MKX / Nautilus PATS 7 ID49 — professional tool mandatory.
- AKL for Ford PATS 7 ID49 needs PATS PIN (FORScan / autokeyprog / NASTF) AND online cloud token on ID49 era.
- Keep all existing/lost key fobs at least 10 metres from vehicle during AKL.
- AKL accessory needs: Autel IMKPA + Ford online token for ID49 cloud calc, Lonsdor LKE Smart Key Emulator for K518 simulated-key AKL path, Xhorse KH100 Ford. APB112 NOT mandatory. G-Box bench EEPROM NOT used. XP400 PRO only if PCM/IPC EEPROM corrupted (rare).
Lockout
Door pick / decode: Lishi FO38 (CW).
67 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.