Lexus GS 450h2011 Manual page 582

5-2. Steps to take in an emergency
STEP 6
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
Overheating
■
In the following situations, your vehicle may be overheating.
The engine coolant temperature gauge enters the red zone or a loss of power is
●
experienced.
Steam is coming from under the hood.
●
The message "HYBRID SYSTEM OVERHEAT" is displayed on the multi-infor-
●
mation display.
CAUTION
To prevent an accident or injury when inspecting under the hood of your vehicle
■
If steam is seen coming from under the hood, do not open the hood until the
●
steam has subsided. The engine compartment may be very hot, causing serious
injury such as burns.
Keep hands and clothing away from the fan and engine drive belt while the hybrid
●
system is operating.
Do not loosen the radiator cap while the hybrid system and radiator are hot.
●
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
582
GS_HV_U (OM30C14U)
May 21, 2010 2:41 pm
Add coolant if necessary.
Water can be used in an emer-
gency measure if coolant is
unavailable. (P. 593)