How I fixed an electricity issue in my car

A personal story about diagnosing and fixing a cascading electrical failure in a 2015 Chrysler Town and Country minivan. After months of failed shop visits, the author self-diagnosed the root cause: a broken blind spot detection module was corrupting the car's CAN BUS network, causing battery drain, frozen radio, non-functional signals, and windows. The fix involved systematic module disconnection, a multimeter, wiring diagrams from the service manual, and YouTube tutorials. AI tools were unhelpful; YouTube videos proved far more useful.