KESS3 Protocols Releases
New BENCH protocol for Mitsubishi 2UD-8591A-00 – Yamaha.
Gain greater control over the most widespread Yamaha ATVs on the market.
27.04.2026 – Upgrade 3.11
The development dedicated to the ATV segment expands with the introduction of BENCH mode for Mitsubishi
2UD-8591A-00 ECUs, installed on Yamaha models with 700cc engines from 2016 onwards.
This new protocol enables direct access to the control unit, operating directly from the ECU connector, ensuring
greater reliability during read and write phases and improving the precision of interventions for maintenance and
performance development.
Technical focus
- Connection: BENCH
- ECU: Mitsubishi 2UD-8591A-00
- Production years: from 2016
- Brands involved: Yamaha
Supported vehicles
Yamaha Grizzly, Kodiak