Lexus 2013 IS250 Owner's Manual page 526

4
Connect the hose to the valve.
Screw the end of the hose clockwise
as far as possible.
5
Make sure that the compressor
switch is off.
6
Remove the power plug from the
compressor.
IS250_EE(OM53B11E)
8-2. Steps to take in an emergency
511
8