Contact Pattern Test:

Coat rear lid lock upper section with grease.

1. Rear lid lock upper section must not brush against lower section.
2. Eccentric pin of rear lid lock lower section must not brush against upper section.
3. Contact pattern of rear lid lock upper section on eccentric pin should be central (settling behavior of rear lid is compensated).

Fig 1: Identifying Rear Lid Lock Upper Section

Courtesy of BMW OF NORTH AMERICA, INC.