KESS3 Protocol Release

3 september 2026

Upgrade 3.50

KESS3 Unlock Module for Bosch MDG1 ECUs: new protocols and dedicated BOOT “Unlock” accessory.

Unlock protected Bosch MDG1 ECUs independently and reprogram them in BOOT mode with KESS3.

KESS3 expands the range of operations available on the latest “Locked” Bosch MDG1 ECUs and introduces a new dedicated accessory: the KESS3 Unlock Module.

This new accessory is specifically designed to perform the “Unlock” procedure directly in the workshop on MD1CS003, MD1CS069, MD1CP007, MD1CS012, MG1CS042, MD1CS004 (HW80), MG1CS031, MD1CP006, MD1CS005 and MG1CS002 ECUs. Once the unlock is complete, the ECU can then be programmed in BOOT mode, accessing its memories to perform reading, writing and a complete backup of the contents.

This update expands coverage across a wide range of diesel and petrol applications equipped with protected ECUs, produced from 2021 to the present day: from commercial vehicles to high-performance cars and SUVs.

The benefits for everyday workshop operations:

  • Unlock protected ECUs directly in the workshop
  • KESS3 Unlock Module dedicated to managing the BOOT “Unlock” procedure on supported ECUs
  • Access to ECU memories after the Unlock procedure
  • Reading and writing in BOOT mode
  • Complete backup of ECU contents
  • Greater coverage of multi-brand diesel and petrol applications
  • New opportunities to work on commercial vehicles, cars and high-performance SUVs

With KESS3 Unlock Module and KESS3, you can manage the entire operation directly in the workshop, maintaining control over every stage of the process: from the initial ECU unlock to memory access and subsequent programming in BOOT mode.

The KESS3 Unlock Module is already available in Dashboard, in the section dedicated to KESS3 accessories.

The new protocols are available to KESS3 users with CAR BENCH/BOOT activation and an active subscription. The KESS3 Unlock Module is required to perform the BOOT “Unlock” procedure.

Technical focus

  • Connection: BOOT
  • ECU:
    • MD1CS003
    • MD1CS069
    • MD1CP007
    • MD1CS012
    • MG1CS042
    • MD1CS004 (HW80)
    • MG1CS031
    • MD1CP006
    • MD1CS005
    • MG1CS002
  • Production years: dal 2021
  • Brands involved: Audi, Bentley, Case IH, Citroën, Cupra, DS, Fiat, Ford, Genesis, Hyundai, Iveco, John Deere, Kia, Land Rover, Landini Tractors, Massey Ferguson, McCormick, New Holland, Opel, Peugeot, Porsche, Seat, Secma, Skoda, Steyr, Toyota, Vauxhall, Volkswagen

Supported vehicles

  • Audi: A1, A3, A4, A5, A6, A7, A8, Q2, Q3, Q5, Q7, Q8, RS4, RS5, S4, S5, S6, S7, SQ5, TT
  • Bentley: Bentayga, Flying Spur
  • Case IH: Farmall 90C, Farmall 100C, Farmall 110C, Farmall 120C, Farmall A Series
  • Citroën: Berlingo, C3, C3 Aircross, C4, C4 Cactus, C4 Picasso, C4 SpaceTourer, C5 Aircross, Jumpy, SpaceTourer
  • Cupra: Formentor, Leon
  • DS: 3, 7 Crossback, 9
  • FIAT: Ducato, Scudo
  • Ford: Ecosport, F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, F-550 Super Duty, Focus, Kuga, Puma, Tourneo Connect, Transit Connect
  • Ford Trucks: F-650 Super Duty
  • Genesis: G70, G80, GV70, GV80
  • Hyundai: Palisade, Porter, Starex, Staria
  • Iveco: Daily
  • John Deere: 5G Series
  • Kia: New Bongo, Sorento, Stinger, Tasman
  • Land Rover: Defender, Discovery, Range Rover, Range Rover Sport, Range Rover Velar
  • Landini Tractors: 5-Series, 6 Series
  • Massey Ferguson: MF 3xx
  • McCormick: X5.085, X5.100, X5.110, X5.120, X6.125, X6.135
  • New Holland: T4 Powerstar Series, T4 Series, T5 90, T5 100, T5 110, T5 120, T5 Series
  • Opel: Astra, Combo, Corsa, Crossland X, Grandland X, Mokka, Vivaro, Zafira Life
  • Peugeot: 2008, 208, 3008, 308, 5008, 508, Expert, Partner, Rifter
  • Porsche: Cayenne, Cayenne E-Hybrid, Cayenne S, Cayenne S E-Hybrid, Macan, Macan GTS, Macan S, Macan Turbo, Panamera, Panamera 4, Panamera 4 E-Hybrid, Panamera 4S, Panamera 4S E-Hybrid
  • Seat: Ateca, Leon, Tarraco
  • Secma: F16 Turbo
  • Skoda: Karoq, Kodiaq, Octavia, Superb, Yeti
  • Steyr: Kompakt
  • Toyota: Proace City
  • Vauxhall: Astra, Combo, Corsa, Crossland X, Grandland X, Mokka, Vivaro, Zafira Life
  • Volkswagen: Arteon, Caddy, Golf, Passat, Polo, Talagon, Tiguan, Touareg, T-Roc

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