Removing and installing/replacing the front left or right seat belt (six-point seat belt) (M4 GTS only)

Remove the seat cushion (1).

Detach the seat belts (3) from the locks (2).

Remove the seat belts (3) from the front seat.

Installation note: 

Do not twist seat belts (3) when you install them.

Make sure the locks (2) are correctly positioned in the corresponding mountings.

Courtesy of BMW OF NORTH AMERICA, INC.