Remove the sound insulation on the front door

NOTE: Description is for left component only. Procedure on the right side is identical.

Preliminary work

NOTE: TECHNICAL INFORMATION
Notes on the sound insulation must be strictly observed for these repair instructions.
For additional information see: 51 48... NOTES ON BONDING THE SOUND INSULATION (SI) IN DOORS

Open and remove the twistlock (1).
Carefully detach and remove the sound insulation (2) from the inner door panel with a suitable tool.

Courtesy of BMW OF NORTH AMERICA, INC.