Brief guide: Mercedes start‑error — parts required and external checks
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What to check for a Mercedes 'start error' (EZS/ELV): symptoms, external checks and information to assess the unit.
Qué ocurre
Start error lamp; instrument cluster off; starter does not crank; loss of communication with EZS/ELV; key-related fault messages.
Qué conviene comprobar
Verify battery voltage and terminals; check for terminal 15 power; inspect key and ring antenna externally; inspect fuses/connectors; record stored DTCs.
El siguiente paso
Collect: part numbers, clear photos of connectors, exact fault codes, what happens when attempting start and terminal 15 status. If issue persists, consider sending EZS+ELV+key for bench diagnostic.
