Snap-on describes Pass Thru Pro IV as a J2534 vehicle communication interface supplied with device drivers for use with vehicle-manufacturer software to program emission-related ECUs. OEM subscriptions and requirements are separate.
Vehicle coverage, functions, vehicle-maker approval, operating system, driver version, subscriptions and security authorisation must be checked for the exact vehicle and job. Follow the vehicle manufacturer’s programming procedure and specified stable power supply. A J2534 interface does not by itself supply OEM software or guarantee every function.
Source
Manufacturer product or support information, accessed 10 November 2026.