Toyota 2013 Prius Owner's Manual page 596

STEP 4
STEP 5
STEP 6
PRIUS PHV_OM_OM47787U_(U)
5-2. Steps to take in an emergency
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.
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