Toyota prius Owner's Manual page 571

STEP 5
Start the hybrid system and check for the multi-information
STEP 6
display.
If the message does not disappear:
Stop the hybrid system and contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped
professional.
If the message is not displayed:
Have the vehicle inspected at the nearest any authorized
Toyota dealer or repairer, or another duly qualified and
equipped professional.
PRIUS_OM_OM47871E_(EE)
5-2. Steps to take in an emergency
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
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