Toyota PRIUS 2014 Manual page 576

5-2. Steps to take in an emergency
STEP 4
STEP 5
STEP 6
576
PRIUS PHV_OM_OM47856U_(U)
Connect the hose to the valve.
Screw the end of the hose
clockwise as far as possible.
Make sure that the compressor
switch is off.
Remove the rubber stopper from
the compressor.