关键词: 质量改善“七步法”；天窗漏水；售后问题；PDCA

Abstract: The sunroof is one of the preferred configurations for customers when choosing a vehicle, but any vehicle manufacturer does not want to encounter the issue of sunroof leakage in the aftersales market. The occurrence of such issues requires high attention and rapid resolution, and measures need to be solidified. This article focuses on a sunroof water leakage issue in the aftersales market, using the "seven steps" of quality improvement to solve the sunroof water leakage. Many practical quality management tools from the "seven steps" are used, such as the plan, do, check, act (PDCA) cycle, fault description 5W1H, fishbone factor analysis, 5Why etc. Through the solution of this case, the complete usage process of the "seven steps" is presented, quickly and effectively solved the after-sales problem of sunroof leakage.

Key words: Quality improvement "seven steps"; Sunroof leakage; Aftersales issue; PDCA