KESS3 Protocol Release

12 october 2026

Upgrade 3.64

New BOOT Unlock protocol for Bosch MG1CS028 “Locked” ECUs – Jaguar, Land Rover.

Work on JLR Ingenium turbocharged petrol MHEV and PHEV engines.

With KESS3, you can now read and write Bosch MG1CS028 “Locked” ECUs fitted to Jaguar and Land Rover models equipped with Ingenium mild hybrid and plug-in hybrid turbocharged petrol engines.
First, you need to unlock the ECU in BOOT mode using the dedicated KESS3 Unlock Module.

Once unlocked, you can also access the ECU using the already available BENCH protocol, ensuring a faster workflow and expanding your operational possibilities on Bosch MG1CS028 ECUs fitted to premium JLR SUVs and off-road vehicles.

Real benefits for your workshop:

  • Unlock the ECU in BOOT mode using the KESS3 Unlock Module.
  • Read and write in BOOT or BENCH mode after unlocking Bosch MG1CS028 “Locked” ECUs.
  • Access the complete ECU content.
  • Work on Ingenium Mild Hybrid and Plug-in Hybrid petrol engines found across the Jaguar, Land Rover, Discovery, Defender and Range Rover ranges.

With KESS3, you expand your operational possibilities on the latest-generation Jaguar and Land Rover models, choosing the most suitable connection mode for each operation.

Technical focus

  • Connection: BOOT Unlock
  • ECU: Bosch MG1CS028
  • Production years: from 2021
  • Brands involved: Jaguar, Land Rover 

Supported vehicles

  • Jaguar F-Pace, E-Pace
  • Land Rover Defender, Discovery, Range Rover, Range Rover Sport, Range Rover Velar

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