Vehicles from 2018 and newer typically require a hardware Security Gateway (SGW) bypass cable to allow the software to write changes to the vehicle's computer. Avoiding "Free Download Patches" and Risks

Perform service light resets, oil change resets, and DPF regenerations.

Change tire sizes to correct your speedometer or adjust tire pressure (TPMS) thresholds.

Program new electronic keys and RF remote controls (often requires a dealer PIN).