If Your Vehicle Overheats - Lexus LS 500h Manual

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7-2. Steps to take in an emergency
NOTICE
When handling jumper cables
■
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fan or engine drive
belt.
To prevent damaging the vehicle
■
The exclusive jump starting terminal is to
be used when charging the 12-volt bat-
tery from another vehicle in an emer-
gency. It cannot be used to jump start
another vehicle.
LS500h_OM_(U)_1810

If your vehicle overheats

The following may indicate that
your vehicle is overheating.
 The engine coolant temperature
gauge (P.81, 85) is in the red
zone or a loss of hybrid system
power is experienced. (For exam-
ple, 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
If the engine coolant temperature

gauge enters the red zone or
"Engine Coolant Temp High Stop in
a Safe Place See Owner's Manual"
is shown on the multi-information
display
1
Stop the vehicle in a safe place and
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