The car short-circuit issue requires careful step-by-step handling. First, immediately stop the vehicle and shut off all power sources to prevent the fault from escalating. If a blown fuse is detected, replace it with one of identical specifications; if fuses repeatedly blow, further troubleshooting is necessary. Use a multimeter to measure circuit resistance, paying particular attention to checking for damaged or aged wiring in high-wear areas such as the engine compartment and door hinges, while also examining electrical equipment like audio systems and air conditioning for abnormalities. If broken wire insulation is found, professional insulation treatment is required; for faulty electrical components, replacement with OEM parts is necessary. For prevention, it's recommended to inspect the electrical system every six months, avoid unauthorized installation of high-power electrical devices, pay special attention to wire harness waterproofing during rainy seasons, and refrain from directly spraying high-pressure water at engine compartment wiring during car washes. During routine maintenance, request technicians to perform systematic diagnostics using circuit testers to identify potential risks proactively.
