Disconnect the refrigerant line from the expansion valve

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.

• Open the holder (1).

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• Release the nut (1).
• Disengage the hose support (2).
• Remove the refrigerant line (3) and set it aside.

Courtesy of BMW OF NORTH AMERICA, INC.