Toyota PRIUS Manual page 628

5-2. Steps to take in an emergency
 If "HYBRID SYSTEM OVERHEAT" is shown on the multi-infor-
mation display
Stop the vehicle in a safe place.
STEP 1
Stop the hybrid system and carefully lift the hood.
STEP 2
STEP 3
STEP 4
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PRIUS PHV_OM_OM47831E_(EE)
After the hybrid system has
cooled down, inspect the hoses
and radiator core (radiator) for
any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho-
rized Toyota dealer or repairer, or
another duly qualified
equipped professional.
The coolant level is satisfactory if
it is between the "F" and "L" lines
on the reservoir.
Reservoir
"F"
"L"
and