: Reads and clears diagnostic trouble codes (DTCs) and turns off service lights.
: Tracks real-time data flow from sensors (speed, voltage, temperature) with options for both digital and graphical displays. Special Functions x-diag pro3 v3.14.056
But this wasn't a generic tool. Etched into the bottom right corner, in a font that looked suspiciously like military stenciling, was the string of characters that had gotten three people killed already: . : Reads and clears diagnostic trouble codes (DTCs)