Toyota PRIUS Manual page 607

 If the tire is inflated to more than the specified air pressure
Disconnect the hose from the valve.
STEP 1
STEP 2
Disconnect the hose from the valve, remove the air release cap
STEP 3
from the hose and then reconnect the hose.
STEP 4 Turn the compressor switch on and wait for several seconds, and
then turn it off. Check that the air pressure indicator shows the
specified air pressure.
If the air pressure is under the designated pressure, turn the com-
pressor switch on again and repeat the inflation procedure until the
specified air pressure is reached.
The valve of a tire that has been repaired

After a tire is repaired with the emergency tire puncture repair kit, the valve
should be replaced.
 Note for checking the emergency tire puncture repair kit
Check the sealant expiry date occasionally.
The expiry date is shown on the bottle.
Do not use sealant that has passed its expiry date. You may be unable to
complete the repair using the emergency tire puncture repair kit.
PRIUS PHV_OM_OM47831E_(EE)
5-2. Steps to take in an emergency
Install the air release cap to the end of the
hose and push the protrusion on the air
release cap into the tire valve to let some
air out.
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