New KESS3 OBD Protocols Released for Marelli IAW 4LV ECU

Posted 2026-01-20 Updated 2026-01- 20

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4~5 min read

The latest KESS3 update (v2.78) introduces new OBD protocols for Marelli IAW 4LV ECUs, widely used on Audi, Volkswagen, Seat, and Skoda vehicles.

Thanks to direct OBD communication, you can now read and write the ECU without disassembly, saving time and improving workshop efficiency. This update is especially valuable for vehicles equipped with 1.0 and 1.4 MPI engines, produced from 1998 to the early 2000s, which are still commonly serviced today.

🔧Technical Highlights

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

🚗Supported Vehicles Include

Audi A2
Seat Cordoba, Ibiza, Leon
Skoda Fabia
VW Bora, Caddy, Gol, Golf, Jetta, Lupo, Polo

This release turns technical simplicity into a real operational advantage—faster jobs, higher throughput, and better profitability for workshops.

Updates

Alientech KESS3

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