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Mercedes C-Class Genuine OEM W203 Replacement Ignition Switch - EZS-EIS 2035450608 / OEM W203 IGNITION / 2035450608

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Product Code: KS02237
  • Genuine OEM W203 Switch
  • You must load your own eeprom & flash data which was read from the original switch
  • Polldiag is able to Virginise the switch
  • Non-returnable once programmed

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Manufacturer UNKNOWN
OEM / Aftermarket OEM
Vehicle Type Car

Replacement ignition switch

Mercedes C-Class Genuine OEM W203 Replacement Ignition Switch - EZS-EIS 2035450608 / OEM W203 IGNITION / 2035450608

A replacement ignition starter switch for selected Mercedes vehicles, suitable when the electrical switch section behind the ignition barrel/housing has become worn or faulty.

The Mercedes C-Class Genuine OEM W203 Replacement Ignition Switch - EZS-EIS 2035450608 / OEM W203 IGNITION / 2035450608 is the electrical ignition switch component used to send the correct ignition/accessory/start signals when the key is turned. Ignition switches can wear after many years of use, especially on vehicles with heavy key bunches, stiff barrels or high-mileage everyday use.

Compatible vehicles / reference details from product data: Mercedes C-Class Genuine OEM W203.

Part / reference codes: EZS-EIS 2035450608 / OEM W203 IGNITION / 2035450608

Common fault signs

No ignition lights, intermittent power, key turns but ignition does not switch on, accessories cut out, or the vehicle only starts after moving the key position.

Switch, barrel or housing?

Customers often confuse a failed ignition switch with a worn ignition barrel or damaged housing. The switch is the electrical part; the barrel and housing are the mechanical parts the key turns in.

Fitting advice

Ignition parts should be fitted carefully to avoid damage to the key, housing, wiring or immobiliser components. If unsure, use a professional auto locksmith or technician.

To help eliminate the switch from the housing or barrel, the electrical switch can often be removed from the rear of the ignition housing. If the key was not turning before, but turns correctly once the switch is removed, the issue may be with the switch or the way it is loading the housing. If the key still will not turn, the barrel or ignition housing may be at fault instead.

Diagnostic note: If the key turns fully to ON but the ignition still does not power up, the fault could be the ignition switch, immobiliser, BCM, ECU, wiring, fuse/relay issue or another electrical fault. A full diagnostic check is recommended.

Key Features

  • ✓ Genuine OEM W203 Switch
  • ✓ You must load your own eeprom & flash data which was read from the original switch
  • ✓ Polldiag is able to Virginise the switch
  • ✓ Non-returnable once programmed

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