If Your Vehicle Overheats - Lexus ES300h Owner's Manual

If your vehicle overheats

The following may indicate that your vehicle is overheating.
The needle of the engine coolant temperature gauge (P. 86) enters the
●
red zone or a loss of hybrid system power is experienced. (For example, the
vehicle speed does not increase.)
"Hybrid System Overheated" is shown on the multi-information display.
●
Steam comes out from under the hood.
●
Correction procedures
If the needle of the engine coolant temperature gauge enters the red zone
■
Stop the vehicle in a safe place and turn off the air conditioning system, and
1
then stop the hybrid system.
If you see steam:
2
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
3
cooled down sufficiently, inspect
the hoses and cooling system for
leaks.
Radiator
1
Cooling fans
2
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
The coolant level is satisfactory if
4
it is between the "FULL" and
"LOW" line on the reservoir.
Reservoir
1
"FULL"
2
"LOW"
3
Radiator cap
4
ES300h_OM_OM33B71U_(U)
8-2. Steps to take in an emergency
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