cooling Lexus ES300 2000 Owner's Manuals (in English)

GAUGES, METERS AND SERVICE REMINDER INDICATORS
57
Your vehicle may overheat during severe operating
conditions, such as:

Driving up a long hill on a hot day.
 Reducing speed or stopping after high speed driving.
 Idling for a long period with the air conditioning on in
stop±and±go traffic.
 Towing a trailer.
NOTICE
Do not remove the thermostat in the engine
cooling system as this may cause the engine to
overheat. The thermostat is designed to control the flow of coolant to keep thetemperature of the engine within the specifiedoperating range.
Do not continue driving with an overheatedengine. See ªIf your vehicle overheatsº onpage 342.

AIR CONDITIONING
218
20E095
2. Turn the ªTEMPº knob until the desired
temperature is displayed.
The ªTEMPº knob is used to set the desired passenger
compartment temperature. The temperature of air
delivered to the passenger compartment will be
controlled automatically according to the setting. The
figures on the panel indicate degrees Fahrenheit or
Centigrade.
When you adjust the ªTEMPº knob to maximum cooling,
a ªMAX. COLDº message will appear on the display and
the air intake mode will be automatically changed to
RECIRCULATED AIR. SETTING OPERATION ± manual control
If manual air flow selection is desired ±

AIR CONDITIONING
219
20E096
The outlets from which air is delivered can be selected
manually by pushing the button. The function of each
mode is as follows:
1Panel ± Air flows mainly from the instrument panel
vents.
2 Bi±level ± Air flows from both the floor vents and
the instrument panel vents.
3 Floor ± Air flows mainly from the floor vents.
4Floor/Windshield ± Air flows mainly from the floor
vents and windshield vents. If quick heating or cooling is desired ±
Turn the ªTEMPº knob until ªMAX. HOTº or ªMAX.
COLDº appears on the display.
When the ªMAX. COLDº is selected, the air intake is
automatically set to ªRECIRCULATED AIRº mode.
If manual fan speed control is desired ±

AIR CONDITIONING
222The air intake control button is used to switch the air
intake between the OUTSIDE AIR mode and
RECIRCULATED AIR mode.
With the button in the OUTSIDE AIR mode, the
OUTSIDE AIR mode indicator light will come on and the
system will take fresh outside air into the vehicle.
If quick circulation of cooled air is desired, push the air
intake control button for RECIRCULATED AIR. The
RECIRCULATED AIR mode indicator light w
ill come on.
For normal use, it is best to keep the air intake control
button set to OUTSIDE AIR mode. If recirculated air is
used during heating, the windows will fog up more easily.
When the air conditioning is ON, if the engine coolant
temperature becomes extremely high, the
RECIRCULATED AIR mode is automatically selected.
This is not a malfunction. When the engine coolant
temperature is lowered, the previous mode resumes.
If manual on±off of the air conditioning is desired ±
Push the ªA/Cº button to turn the air conditioning on and
push it again to turn the air conditioning off.
The air conditioning does not work if the outside
temperature is lowered down to around 0 C (32F).
If the system is used for ventilation, heating in dry
weather or removing frost or exterior fog on the
windshield, turn the air conditioning off once it is no
longer required. This will improve fuel economy. The air
conditioning can be used for year±round automatic temperature
control including cooling and dehumidifying
operation.
If the air conditioning compressor does not operate, the
indicator of the ªA/Cº button will blink. If the indicator of
the ªA/Cº button blinks even when the ªA/Cº button is
pushed again, have the compressor checked by your
nearest Lexus dealer.
Displaying the outside temperature ±
When you push the ªOUTSIDE TEMPº knob, the
temperature display shows the outside temperature. To
return to the display of the current set temperature, push
the knob again. The temperature display ranges from
±30 C (±22 F) up to 50C (122F).

AIR CONDITIONING
226Fan speed ± To the desired fan speed
Temperature ± Towards
WARM (to the right)
Air intake ± OUTSIDE AIR
Air flow ± FLOOR
Air conditioning ± OFF
 For quick heating, select RECIRCULATED AIR for a
few minutes. To keep the windows from fogging,
select OUTSIDE AIR after the vehicle interior has
been warmed.
 Push the ªA/Cº button on for dehumidified heating.
 Choose floor/windshield air flow to heat the vehicle
interior while defrosting or defogging the windshield. Air conditioning
For best results, set controls to:
For automatic operation ±
Push in the ªAUTOº button.
Temperature ± To the desired temperature
Air intake ± OUTSIDE AIR
Air conditioning ± ON
For manual operation ±Fan speed ± To the desired fan speed
Temperature ± Towards COLD (to the left)
Air intake ± OUTSIDE AIR
Air flow ± PANEL
Air conditioning ± ON
 For quick cooling, select RECIRCULATED AIR for a
few minutes.
Ventilation
For best results, set controls to:
For automatic operation ±
Push in the ªAUTOº button.
Temperature ± Towards low temperature
Air intake ± OUTSIDE AIR
Air conditioning ± OFF

STARTING AND DRIVING
275
CAUTION
Avoid inhaling the engine exhaust. It contains
carbon monoxide, which is a colorless and odorless
gas. It can cause unconsciousness or even death.
 Make sure the exhaust system has no holes or loose
connections. The system should be checked from
time to time. If you hit something, or notice a change
in the sound of the exhaust, have the system checked
immediately.
 Do not run the engine in a garage or enclosed area
except for the time needed to drive the vehicle in or
out. The exhaust gases cannot escape, making this
a particularly dangerous situation.
 Do not remain for a long time in a parked vehicle with
the engine running. If it is unavoidable, however, do
so only in an unconfined area and adjust the heating
or cooling system to force outside air into the vehicle.
 Keep the trunk lid closed while driving. An open or
unsealed trunk lid may cause exhaust gases to be
drawn into the vehicle.

IN CASE OF AN EMERGENCY
343
When the engine overheats
Pull safely off the road, stop the vehicle and turn on your
emergency flashers. Put the transmission in ªPº and
apply the parking brake.
A: If steam is coming from your engine:
Turn off the engine. Leave the hood closed until there
is no sign of steam or coolant. Your engine could have
been seriously damaged already. Call your Lexus
dealer for assistance.
CAUTION
To help avoid personal injury, keep the hood closed until
there is no steam. Escaping steam or coolant is sign of
very high pressure.
B: If no steam is coming from your engine:
Leave the engine running and turn off the air
conditioning. Check the following.
 Is the cooling fan operating?
 Is the coolant in the acceptable range?
 Is the engine drive belt O.K.?

IN CASE OF AN EMERGENCY
344
CAUTION
When the engine is running, keep hands and clothing
away from the moving fan and engine drive belt.
 Do not attempt to remove the radiator cap when the
engine and radiator are hot. Serious injury could
result from scalding hot fluid and steam blown out
under pressure.
If the cooling fan is not operating or the coolant is not in
the acceptable range, turn off the engine and call your
Lexus dealer.
If both conditions are O.K., after the engine coolant
temperature has cooled to normal, continue driving your
vehicle.
If the engine coolant temperature does not cool down, or
your vehicle overheats again, have it checked as soon
as possible by your Lexus dealer.IF YOU HAVE A FLAT TIRE
1. Reduce your speed gradually, keeping a straight line.
Move cautiously off the road to a safe place ± well away
from the traffic. Avoid stopping on the center divider of
a highway. Park on a level spot with firm ground.
2. Stop the engine and turn on your emergency flashers.
3. Firmly set the pa rking brake and put the transmission
in ªPº.
4. Have everyone get out of the vehicle on the side away
from traffic.
5. Read the following instructions thoroughly.

62L005±1
Temperature range anticipated before next oil change
ENGINE
394Oil capacity
Drain and refillwith filter
without filter
Oil grade
Recommended oil viscosity (SAE):
4.7 L (5.0 qt., 4.1 lmp.qt.)
4.5 L (4.8 qt., 4.0 lmp.qt.)
API SJ, ªEnergy±Conservingº multigrade engine oil or
ILSAC multigrade engine oil
± COOLING SYSTEM
Capacity
Coolant type
8.8 L (9.3 qt., 7.7 lmp.qt.)
ªTOYOTA Long Life Coolantº or equivalent
With ethylene±glycol type coolant for a proper
corrosion protection of aluminum components
Do not use alcohol type antifreeze or plain water
alone.
± FUELFuel type
Octane Rating
Only UNLEADED
87 (Research Octane Number 91) or higher

ENGINE
399
FACTS ABOUT ENGINE OILCONSUMPTION
Functions of engine oil
Engine oil has the primary function of lubricating and
cooling the inside of the engine, and plays a major role
in maintaining the engine in proper working order.
Engine oil consumption
It is normal that an engine should consume some
engine oil during normal engine operation. The
causes of oil consumption in a normal engine are as
follows.
Oil is used to lubricate pistons, piston rings and
cylinders. A thin film of oil is left on the cylinder wall
when a piston moves downwards in the cylinder.
High negative pressure generated when the vehicle
is decelerating sucks some of this oil into the
combustion chamber. This oil as well as some part of
the oil film left on the cylinder wall is burned by the
high temperature combustion gases during the
combustion process.
 Oil is also used to lubricate the stems of the intake
valves. Some of this oil is sucked into the combustion
chamber together with the intake air and is burned
along with the fuel. High temperature exhaust gases
also burn the oil used to lubricate the exhaust valve stems.
The amount of engine oil consumed depends on the
viscosity of the oil, the quality of the oil and the way
the vehicle is driven.
More oil is consumed under driving conditions such as
high speeds and frequent acceleration and
deceleration.
A new engine consumes more oil, since its pistons,
piston rings and cylinder walls have not become
conditioned.
When judging the amount of oil consumption, keep
in mind that the oil may have become diluted,
making it difficult to judge the true level accurately.
For example, if a vehicle is used for repeated short trips
and consumes a normal amount of oil, the dipstick may
not show any drop in the oil level at all, even after 1000
km (600 miles) or more. This is because the oil is
gradually becoming diluted with fuel or moisture, making
it appear that the oil level has not changed.
The diluting ingredients evaporate out when the vehicle
is then driven at high speeds, as on an expressway,
making it appear that oil is excessively consumed after
driving at high speeds.