Localized body damage or repair marks present; structural and reinforcement components have no accident-related damage or repairs. Vehicle performance (including three-electric system) has degraded or is limited.
Accident inspection: main structure, reinforcement parts, and panels undamaged; hinges normal. Engine bay: key mechanical components normal. Exterior: none. Interior: right front seat, right second-row seat, left second-row seat, and left front seat damaged; most features normal; airbags and lighting system normal. Start-up inspection: main components normal. Onboard tools: none.
Once the car system (especially in a closed ecosystem) undergoes a major version upgrade, its bootloader is usually locked, preventing downgrades. If this happens, there is basically no solution in an overseas environment. Therefore, we strongly warn: do not blindly insert a USB drive to upgrade while offline.
We use two steps: 1. Insert a medical-grade endoscope through the spark plug hole to visually inspect cylinder wall scratches and carbon buildup on the piston top; 2. Extract an engine oil sample to check for large metal debris or emulsification (caused by coolant leakage).
To prevent intermittent failures due to aging of the resistance wire, we will start the engine and set the seat heating/ventilation to maximum for at least 5 minutes, confirming significant temperature changes or airflow output in the cushion and backrest using an infrared thermometer or body sensor.
