KESS3 Protocols Releases

New OBD protocols for Marelli IAW 4LV – Audi, Volkswagen, Seat and Skoda.

Thanks to OBD communication, you can work quickly and directly, without disassembly, optimizing time and workflow.

19.01.2026 – Upgrade 2.78

With this release, we introduce new OBD protocols for Marelli IAW 4LV ECUs, a key reference in the European B/C segment and still widely used today in the South American market.

These protocols cover 1.0 and 1.4 MPI engines, produced from 1998 to the early 2000s: long-lasting, reliable, and still regularly serviced in workshops.

Thanks to OBD communication, you can work quickly and directly, without disassembly, optimizing time and workflow.

A release that turns technical simplicity into an operational advantage: read and write via the diagnostic port, manage high workloads, and make every job faster, more efficient, and more profitable.

Technical focus

  • Connection: OBD
  • ECU: Marelli IAW 4LV
  • Production years: from 1998
  • Brands involved: Audi, Volkswagen, Seat, Skoda

Supported vehicles ECU

  • Audi A2

  • Seat Cordoba, Ibiza, Leon

  • Skoda Fabia

  • Volkswagen Bora, Caddy, Gol, Golf, Jetta, Lupo, Polo

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