Mazda Mazda 3 4th (BP) (2019–2026) — Key Programming Reference
- Difficulty
- medium
- Lishi / lockout
- MAZ24
Key fobs & transponder keys (2 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 315 MHz · WAZSKE11D01 | 2019-2026 NA all trims; Sedan + Hatchback | WAZSKE11D01 | BCYA-67-5DY | HITAG-AES 128-bit (6A) / NCF29A1M | 315 MHz | CR2032 | MZ27 |
| 433 MHz · BCYB-67-5DY (SKE11E-01) | 2019-2026 Europe, ME, Asia-Pacific, Australia/NZ — 3-btn and 4-btn | n/a | BCYB-67-5DY | HITAG-AES 128-bit (6A) / NCF29A1M | 433 MHz | CR2032 | MAZ24R (MAZ13 / MZ27) |
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 + Lonsdor K518 + dealer.
- Online / server access: required — Cloud password for ID49/6A.
- On-board (no tool) sequence: not available — Mazda Mazda 3 6A HITAG-AES requires professional OBD tool — no self-programming procedure.
- 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 Mazda Mazda 3 (2019-2026) uses NXP HITAG-AES 6A 128-bit — newest Mazda security tier. Requires online AES token (Lonsdor K518 USA Mazda AES module, Autel IMKPA Mazda cloud, Xhorse KH100 Mazda token). PIN required for AKL (NASTF VSP or dealer-bound on 2024+ VINs).
- Key fob/blade: ensure existing battery (if applicable) is functional before starting.
- Verify chassis chip before booking: ID49 HITAG-PRO (2014-2019 era) transitions to 6A HITAG-AES on facelift CX-5 KF / Mazda 3 BP / CX-30. Confirm transponder ID from a working key with Lonsdor K518 reader before quoting. Mid-cycle MY transitions documented on CX-5 and Mazda 3.
- Tool kit context: Autel IMKPA Mazda module (cloud token ~$5-15/session) and Lonsdor LKE Smart Key Emulator for K518 simulated-key flow are the dominant accessories. Xhorse KH100 + Mazda module also confirmed. APB112 simulator, G-Box bench EEPROM NOT required. XP400 PRO only for IMMO box EEPROM fallback.
- All existing keys erased. Bring ALL replacement keys before starting — minimum 2.
- No manual AKL for Mazda Mazda 3 6A HITAG-AES — professional tool mandatory.
- AKL on 6A HITAG-AES via OBD typically needs PIN/AES token — confirm before quoting.
- Keep all existing/lost key fobs at least 10 metres from vehicle during AKL.
- AKL accessory needs: Autel IMKPA + Mazda AES token, Lonsdor LKE Smart Key Emulator for K518 simulated-key AKL path, KH100 Mazda. APB112 NOT mandatory. G-Box bench EEPROM NOT used. XP400 PRO only if IMMO box EEPROM corrupted (rare).
Lockout
Door pick / decode: Lishi MAZ24 (CW).
31 verified sources · Last verified: 2026-08-09
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.