Lexus IS F 2012 Owner's Manual page 506

5-2. Steps to take in an emergency
STEP 5
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
Overheating
■
If you observe the following, your vehicle may be overheating.
The display on the engine coolant temperature gauge flashes or a loss of power
●
is experienced.
Steam is coming from under the hood.
●
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 fans and belt while the engine is running.
●
Do not loosen the coolant reservoir cap while the engine and radiator are hot.
●
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
506
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. (P. 517)