Disconnect refrigerant line on the connecting piece

CAUTION: Residual pressure in the heating and air conditioning system  .
Injury hazard! 

• Wear safety goggles and protective gloves when disconnecting the refrigerant line.
• Close the refrigerant lines with seal plugs.

• Loosen screw (1).
• Remove the refrigerant line (2).

Courtesy of BMW OF NORTH AMERICA, INC.