3737-2. Steps to take in an emergency
7
When trouble arises
3Remove the caps   and  .
4 Add coolant through the inlet of the cap 
 up to the “F” line  , and then 
replace the cap  .
5 Add coolant through the inlet of the cap 
 until it is full, and then replace the 
cap .
WARNING
■When inspecting under the hood of 
your vehicle
Observe the following precautions. 
Failure to do so may result in serious 
injury such as burns.
●If steam is seen coming from under the 
hood, do not open  the hood until the 
steam has subsided. The engine com-
partment may be very hot.
AB
BC
B
A
A
●After the hybrid system has been 
turned off, check that the indicator on 
the power switch and the “READY” 
indicator are off.
When the hybrid system is operating, 
the gasoline engine may automatically 
start, or the cooling fan may suddenly 
operate even if the gasoline engine 
stops. Do not touch or approach rotat-
ing parts such as the fan, which may 
lead to fingers or clothing (especially a 
tie, a scarf or a muffler) getting caught, 
resulting in serious injury.
●Do not loosen the coolant inlet cap or 
coolant reservoir caps while the hybrid 
system and radiator are hot.
High temperature steam or coolant 
could spray out.
NOTICE
■When adding engine/power control 
unit coolant
Add coolant slowly after the hybrid sys-
tem has cooled down  sufficiently. Adding 
cool coolant to a hot hybrid system too 
quickly can cause dama ge to the hybrid 
system.
■To prevent damage to the cooling sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with 
foreign matter (such as sand or dust 
etc.).
●Do not use any coolant additive.