Vehicles involved: BMW 4 Series Coupe with development sequence F32.
Fault content: During the production process of the above-mentioned vehicles, the reserved gap between the side panel and its inner reinforcement plate was not processed to the correct size. Too small a reserved gap may cause the anti-corrosion paint to be unable to be effectively applied, and there is a possibility of indirect damage such as corrosion.
Required measures: Check and renovate the anti-corrosion protective coating in the area involved.
Repair method: The protective spray can be added through an opening on the side panel without removing the parts. The area involved is shown in the red oval in the figure, and the opening for adding the anti-corrosion spray is marked with a red arrow.