We maintain an absolute skeptical attitude. In addition to regular visual inspections, we focus on checking for sediment accumulation around the sunroof drainage channels and look for water stains under the A-pillar trim and front floor mats. This is the only effective physical evidence to determine if the sunroof drainage holes are blocked, leading to hidden leaks.

Yes. For hybrid vehicles, technicians will conduct forced switching tests between EV (electric) and HEV (hybrid) modes, focusing on the sensation of clutch engagement and reading the hybrid system's specific fault codes to ensure the complex dual power system operates correctly.

All our measuring instruments (especially calipers, paint thickness gauges, and refrigerant pressure gauges) are calibrated quarterly according to ISO quality management system requirements to ensure the data we provide you is objective, accurate, and reliable.