TOYOTA 2010 Prius - Manual (Page 573)

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5-2. Steps to take in an emergency
If necessary, add power control
unit coolant up to the full line.
Water can be used in an emer-
gency measure if power control
unit coolant is unavailable.
(
→P. 562)
Have the vehicle checked at nearest Toyota dealer as soon as possi-
ble.
STEP 5
■
Overheating
The following symptoms may occur when your vehicle is overheating:
●
Hybrid system output decrease.
●
Steam is coming from under the hood.