WABCO Toolbox / Toolbox PLUS is the official diagnostic software used for servicing WABCO electronic braking, stability, suspension, and safety systems installed on commercial trucks, trailers, and buses. The software provides access to ECU fault codes, live data, component testing, calibration routines, and system configuration functions for ABS, EBS, ESC, air suspension, lane departure systems, collision mitigation systems, and electronic braking controllers. Toolbox supports a wide range of WABCO products including Easy-Stop, PAN series, Modular ABS, EBS-E, SmartTrac stability control, air disc brake wear sensors, OnGuard radar systems, and intelligent trailer control modules. The PLUS version expands functionality with enhanced graphics, system-specific diagnostic workflows, updated product coverage, and access to calibration files and service documentation used in professional fleet and OEM repair environments.