Then the feed flickered. Another version of the same room appeared, split-screen. In that one, the child was gone, and the woman was older, harder, holding a rifle. A caption blinked: RESIDUAL TIMELINE. UNPAINTED. STILL REAL SOMEWHERE.

: Removal of DPF (Diesel Particulate Filter), EGR (Exhaust Gas Recirculation), and AdBlue/SCR systems.

: Clearing specific Diagnostic Trouble Codes (DTC) that trigger "check engine" lights.