Sequence of work
1. Remove the door trim cord along the B-pillar.
2. Use a screwdriver to unfasten the four clips at the top of the iron edge.
3. Pull upholstery upwards.
4. Turn away the ends of a seat belt.
5. Remove an upholstery on a threshold below.
6. After installation, check the seat belt adjuster. It must be fixed in three positions.