Mercedes C-Class 1st (W202) (1993–2000) — Key Programming Reference
- Difficulty
- hard
- Lishi / lockout
- HU64
Key fobs & transponder keys (3 variants)
| Key | Years | FCC ID | P/N | Chip | Freq | Battery | Blade |
|---|---|---|---|---|---|---|---|
| IR no-RF · A2107602006 | 1994–1997 early W202, all markets (IR-only key; factory IR window 12 Jan 1994 – 31 May 1997 build) | n/a | A2107602006 | Philips Crypto ID44 (PCF7935AS) | n/a | CR2025 | HU64 |
| 315 MHz · NCZMB1K | 1998-2000 NA MY (late/facelift W202 dual IR+RF key) | NCZMB1K | 2795102559 | Philips Crypto ID44 (PCF7935AS) | 315 MHz | CR2025 | HU64 |
| 433 MHz · ZR803 | 1997–2000 Europe/RoW (facelift DAS-2b dual IR+RF key) | n/a | n/a | Philips Crypto ID44 (PCF7935) | 433 MHz | 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 — 1993-2000 W202 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 + W202 IR 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 (W202 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 (W202 C-Class, 1993-2000) is Mercedes FBS2 NEC-IR EIS era — the predecessor to W203/W204 FBS3 NEC EIS. FBS2 era uses IR (infrared) read of EIS password via dashboard IR port, not OBD-only like FBS3. Two FBS2 sub-eras within W202: 1993-1997 early (NEC EIS only, simpler IR protocol), 1997-2000 facelift (added rolling-code remote section). Verify trim + production date — wrong FCC key will not pair.
- FBS2 IR EIS on this variant requires Xhorse VVDI MB Tool + W202 IR adapter (different SKU than W203/W210/W220 IR cables) OR Abrites AVDI Mercedes (EU-locksmith standard for pre-2003 Mercedes — best IR success rate). Autel IM608 + IMKPA covers W202 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 W202.
- W202 AKL is OBD-or-IR — bench EIS removal needed if IR port damaged. IR read success on W202 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 C36 / C43 W202 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.
- W202 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: C220 / C280 / C36 AMG / C43 AMG all share W202 EIS architecture. Classic-era W202 (1993-2000) — title chain verification critical given vehicle age.
Lockout
Door pick / decode: Lishi HU64 (CW).
31 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.