If Your Vehicle Overheats - Lexus RX 450h 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.137)
enters the red zone, or a loss of
hybrid system power is experi-
enced. (For example, the vehicle
speed does not increase.)
 "Engine Coolant Temp High Stop
in a Safe Place See Owner's
Manual" or "Hybrid System
Overheated Output power
reduced" is shown on the
multi-information display.
 Steam comes out from under the
hood.
Correction procedures
"Engine Coolant Temp High Stop in

a Safe Place See Owner's Manual"
is shown on the multi-information
display
Stop the vehicle in a safe place and
1
turn off the air conditioning system,
and then stop the hybrid system.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the hybrid system has cooled
down sufficiently, inspect the hoses
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7-2. Steps to take in an emergency
and radiator core (radiator) for any
leaks.
Radiator
A
Cooling fans
B
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4 The coolant level is satisfactory if it
is between the "FULL" and "LOW"
lines on the reservoir.
Reservoir
A
"FULL" line
B
"LOW" line
C
Radiator cap
D
5 Add coolant if necessary.
Water can be used in an emergency if
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