Kess V2 Protocol Not Found

Reinstall a clean version (like 2.23 or 2.47) and ensure all drivers are installed plugging in the device.

Infineon Tricore processors (found in most modern VAG, BMW, Mercedes) have a security lock called "LOCKED." If the ECU is locked, KESS V2 cannot find the protocol because the processor refuses the seed/key request. kess v2 protocol not found

The error "Protocol not found" means in the software’s database. Your computer and the tool are fine; the bridge between the tool and the ECU's brain is broken. Reinstall a clean version (like 2

Have a specific ECU giving you trouble? Post your ECU model (e.g., Bosch ME7.5, Siemens SIM18, Delphi DCM6.2) below—the protocol fix varies by processor. Your computer and the tool are fine; the

When you open KESS V2, you have three tabs:

The error is rarely a single problem. It falls into four primary categories: