If Your Vehicle Overheats - Lexus LS 500 2019 Owner's Manual

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7-2. Steps to take in an emergency

If your vehicle overheats

The following may indicate that
your vehicle is overheating.
 The engine coolant temperature
gauge (P.73, 76) is in the red
zone or a loss of engine power is
experienced. (For example, the
vehicle speed does not increase.)
 "Engine Coolant Temp High Stop
in a Safe Place See Owner's
Manual" is shown on the
multi-information display.
 Steam comes out from under the
hood.
Correction procedures
1 Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
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 engine has cooled down
sufficiently, inspect the hoses and
LS500_OM_(U)_1810
radiator core (radiator) for any
leaks.
Radiators
A
Cooling fan
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 "F" and "L" lines on
the reservoir.
 Engine
Reservoir
A
"F" line
B
"L" line
C
Coolant inlet cap
D
 Intercooler