Mercedes E-Class 3rd (W211) (2003–2009) — Key Programming Reference
- Difficulty
- medium
- Lishi / lockout
- HU64
Key fobs & transponder keys (3 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| 315 MHz · IYZ3312 | 2003–2006 NA early production | IYZ3312 | 5WK47283 | Mercedes NEC FBS3 (infrared EIS keyless-go SmartKey) | 315 MHz | CR2025 | HU64 |
| 315 MHz · IYZ3317 | 2007–2009 NA late production / facelift | IYZ3317 | n/a | Mercedes NEC FBS3 (EIS keyless-go SmartKey) | 315 MHz | CR2025 | HU64 |
| 433.92 MHz · 233221011G | 2003–2009 EU / RoW all markets | n/a | n/a | Mercedes NEC FBS3 (EIS keyless-go SmartKey) | 433.92 MHz | 2 x CR2025 | HU64 |
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 — IR + tokens.
- Online / server access: required — Cloud token req'd.
- On-board (no tool) sequence: not available — 2003-2009 W211 has no DIY onboard programming. Mercedes XENTRY / DAS dealer relearn requires SCN coding certificate (still available for classic chassis at MB classic-car service centers). Aftermarket Add Key requires VVDI MB Tool + W211 IR/OBD adapter + tokens OR Abrites AVDI Mercedes (EU-preferred for pre-2003).
- On site: engine off · 12V+ + charger · Clear EIS + DAS DTCs.
- Bring: Photo ID + vehicle registration. Title strongly recommended for AKL on classic-era Mercedes (W211 is 25+ years old — title chain verification critical).
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 (W211 E-Class, 2003-2009) is Mercedes FBS2 NEC-IR EIS era — the FBS2→FBS3 transition: 2003-2005 early = FBS2 NEC IR, 2006-2009 facelift = FBS3 NEC EIS (no IR needed). Verify production date before tool choice. FBS2 era uses IR (infrared) read of EIS password via dashboard IR port, not OBD-only like FBS3. Two W211 sub-eras: 2003-2005 = FBS2 (IR adapter needed), 2006-2009 facelift = FBS3 (OBD path, no IR — same workflow as W204 FBS3). Verify trim + production date — wrong FCC key will not pair.
- Tool path depends on year: 2003-2005 = Xhorse VVDI MB Tool + W211-FBS2 IR adapter; 2006-2009 = Xhorse VVDI MB Tool + W211 OBD EIS cable (FBS3 NEC same as W204) OR Abrites AVDI Mercedes (EU-locksmith standard for pre-2003 Mercedes — best IR success rate). Autel IM608 + IMKPA covers W211 FBS2 but IR read is the bottleneck — IM608 password calc itself works once IR data is read. CGDI MB has FBS2 coverage from 2004+ NEC variants (W203 era and later), not pure FBS2 W211.
- W211 AKL is OBD-or-IR — bench EIS removal needed if IR port damaged. IR read success on W211 is generally good (better than W210/W215 where IR read fails ~30% of attempts per locksmith reports). Verify IR port functional before quoting OBD/IR vs bench pricing. AMG E55 / E63 W211 variants share standard EIS architecture — no AMG-specific quirk on FBS2 era.
- AKL on this chassis erases all previously paired FBS2 IR keys. Bring minimum 2 new Mercedes FBS2 NEC IR keys matching trim. Wrong chip family (e.g., FBS3 NEC EIS keys from W203/W204 era) will not work — verify chip generation before ordering.
- W211 AKL is OBD-or-IR friendly when IR port is intact (~85% IR read success). Damaged IR port = bench EIS EEPROM read via Autel XP400 PRO or Xhorse VVDI Prog. Bench job adds ~1 hour vs IR. Verify IR port functional before quoting bench-vs-IR pricing.
- AKL erases EIS-paired remotes. Recovered old keys will not authenticate — customer must be informed. Verify trim before scheduling: E320 / E350 / E550 / E55 AMG / E63 AMG all share W211 EIS architecture. Older W211 (2003-2009) — title chain verification critical given vehicle age.
Lockout
Door pick / decode: Lishi HU64 (CW).
45 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.