: Accessing "masked" Diagnostic Trouble Codes (DTCs) that are normally hidden by production-level software.
The technician copies this unique Hardware ID and pastes it into the Xentry Keymaker V2.1 interface.
: A functioning installation of Mercedes-Benz diagnostic software (versions vary, but V2.1 is common for older systems like OpenShell or XDOS). Hardware ID (HW-ID)