cooling Lexus ES330 2005 Gauges, Meters and Service Reminder Indicators /

INTRODUCTION
337
DOITYOURSELF SERVICEPRECAUTIONS
If you perform maintenance yourself, be sure to follow the
correct procedure given in this Section.
You should be aware that improper or incomplete servicing
may result in operating problems.
Performing do −it−yourself maintenance during the warranty
period may affect your warranty coverage. Read the separate
Lexus Warranty statement for details and suggestions.
This Section gives instructions only for those items that are
relatively easy for an owner to perform. As explained in
Section 5, there are still a number of items that must be
performed by a qualified technician with special tools.
For information on tools and parts for do−it−yourself
maintenance, see “Parts and tools” on page 338.
Utmost care should be taken when working on your vehicle to
prevent accidental injury. Here are a few precautions that you
should be especially careful to observe:
CAUTION
 When the engine is running, keep hands, clothing,
and tools away from the moving fan and engine drive
belt. (Removing rings, watches, and ties is
advisable.)
 Right after driving, the engine compartment — the
engine, radiator, exhaust manifold and power
steering fluid reservoir, etc. — will be hot. So be
careful not to touch them. Oil and other fluids may
also be hot.
 Do not leave anything that may burn easily, such as
paper or rags, in the engine compartment.
 Do not smoke, cause sparks or allow open flames
around fuel or the battery. Their fumes are
flammable.
 Do not get under your vehicle with just the body jack
supporting it. Always use automotive jack stands or
other solid supports.
 Be sure that the ignition is off if you work near the
electric cooling fans or radiator grille. With the
ignition on, the electric cooling fans will
automatically start to run if the engine coolant
temperature is high and/or the air conditioning is on.

ENGINE
346— COOLING SYSTEM
Capacity
9.2 L (9.7 qt., 8.2 Imp. qt.)
Coolant type“Toyota Super Long Life Coolant” or similar high quality ethylene glyco\
l
based non −silicate, non −amine, non −nitrite, and non −borate coolant
with long −life hybrid organic acid technology (Coolant with long −life
hybrid organic acid technology is a combination of low phosphates and
organic acids.)
Do not use plain water alone.
NOTE:
“Toyota Super Long Life Coolant” is used in your Lexus vehicle at factory fil\
l. In order to avoid technical problems, only use “Toyota
Super Long Life Coolant” or similar high quality ethylene glycol based non −silicate, non −amine, non −nitrite, and non −borate coolant
with long−life hybrid organic acid technology. (Coolant with long −life hybrid organic acid technology is a combination of low
phosphates and organic acids.) Please contact your Lexus dealer for further deta\
ils.
— IGNITION SYSTEM
Spark plug — Make DENSO NGK
— Gap
SK20R11
IFR6A11
1.1 mm (0.043 in.)
— ELECTRICAL SYSTEM
Battery Open voltage at 20C (68F):
Charging rates
12.6 — 12.8 V Fully charged
12.2 — 12.4 V Half charged
11.8 — 12.0 V Discharged
[Voltage that is checked 20 minutes after the key is removed with all the
lights turned off]
5 A max.

ENGINE
349
FUEL PUMP SHUT OFF SYSTEM
The fuel pump shut off system stops supplying fuel to the
engine to minimize the risk of fuel leakage when the engine
stalls or an airbag inflates upon collision. To restart the engine
after the fuel pump shut off system activates, turn the ignition
switch to “ACC” or “LOCK” once and start it.
CAUTION
Inspect the ground under the vehicle before restarting
the engine. If you find that liquid has leaked onto the
ground, it is the fuel system has been damaged and it is
in need of repair. In this case, do not restart the engine.
FACTS ABOUT ENGINE OIL CONSUMPTION
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.

ENGINE
355
CHECKING THE ENGINE COOLANTLEVEL
1Reservoir cap2Upper line3Lower line
Look at the seethrough coolant reservoir when the
engine is cold. The coolant level is satisfactory if it is
between the “F” and “L” lines on the reservoir. If the level
is low, add the coolant. (For the coolant type, see “Coolant
type selection” described below.)
The coolant level in the reservoir will vary with engine
temperature. However, if the level is on or below the “L” line,
add coolant. Bring the level up to the “F” line. If the coolant level drops within a short time after replenishing,
there
may be a leak in the system. Visually check the radiator,
hoses, engine coolant filler cap, radiator cap and drain cock
and water pump.
If you can find no leak, have your Lexus dealer test the cap
pressure and check for leaks in the cooling system.
CAUTION
To prevent burning yourself, do not remove the radiator
cap when the engine is hot.
Coolant type selection
Use of improper coolants may damage your engine cooling
system.
Only use “Toyota Super Long Life Coolant” or similar high
quality ethylene glycol based non −silicate, non −amine,
non− nitrite, and non −borate coolant with long −life hybrid
organic acid technology. (Coolant with long −life hybrid organic
acid technology is a combination of low phosphates and
organic acids.)
For the U.S.A. — “T oyota Super Long Life Coolant” is a mixture
of 50% coolant and 50% deionized water. This coolant
provides protection down to about −35C (− 31F).
For Canada — “Toyota Super Long Life Coolant” is a mixture
of 55% coolant and 45% deionized water. This coolant
provides protection down to about −42C (− 44F).

ENGINE
356
NOTICE
Do not use plain water alone.
Lexus recommends “Toyota Super Long Life Coolant”, which
has been tested to ensure that it will not cause corrosion nor
result in malfunction of your engine coolant system with proper
usage. “Toyota Super Long Life Coolant” is formulated with
long−life hybrid organic acid technology and has been
specifically designed to avoid engine cooling system
malfunction on Lexus vehicles.
Please contact your Lexus dealer for further details.
CHECKING THE RADIATOR AND CONDENSER
If either of the above parts are extremely dirty or you are not
sure of their condition, take your vehicle to a Lexus dealer.
CAUTION
To prevent burning yourself, be careful not to touch the
radiator, condenser or intercooler when the engine is
hot.
NOTICE
To prevent damage to the radiator and condenser, do
not perform the work by yourself.

CHASSIS
386
Wheel selection
When replacing wheels, care should be taken to ensure
that they are equivalent to those removed in load capacity,
diameter, rim width, and offset.
Correct replacement wheels are available at your Lexus
dealer.
A wheel of a different size or type may adversely affect
handling, wheel and bearing life, brake cooling,
speedometer/odometer calibration, stopping ability, headlight
aim, bumper height, vehicle ground clearance, and tire or snow
chain clearance to the body and chassis.
CAUTION
Do not use wheels other than the manufacturer’s
recommended size, as this may cause dangerous
handling characteristics resulting in loss of control.
Otherwise, an accident may occur resulting in death or
serious injuries.
ALUMINUM WHEEL PRECAUTIONS
 When installing aluminum wheels, check that the wheel nuts
are tight after driving your vehicle the first 1600 km (1000
miles).
 If you have rotated, repaired, or changed your tires, check
that the wheel nuts are still tight after driving 1600 km (1000
miles).
 When using tire chains, be careful not to damage the
aluminum wheels.
 Use only Lexus wheel nuts and wrench designed for your
aluminum wheels.
 When balancing your wheels, use only Lexus balance
weights or equivalent and a plastic or rubber hammer.
 As with any wheel, periodically check your aluminum
wheels for damage. If damaged, replace immediately.

ELECTRICAL COMPONENTS
392
No.FUSEAMPERECIRCUIT
1A/F25Multiport fuel injection
system/sequential multiport
fuel injection system
2DOOR125
Multiplex communication
system (power door lock
system, auto−door locking
system, wireless remote
control system)
3TEL5No circuit
4AM230All components in “IGN” and
“IG2” fuses and starting system
5EFI20Multiport fuel injection
system/sequential multiport
fuel injection system
6ALTS5Charging system
7HEAD LH
UPR10Left −hand headlight (high
beam)
No.FUSEAMPERECIRCUIT
8ETCS10Multiport fuel injection
system/sequential multiport
fuel injection system
9HORN10Horns
10IGN15Starting system
11HEAD RH
UPR10Right −hand headlight (high
beam)
12HAZ15Emergency flashers
13D.C.C30All components in “ECU− B”,
“RAD NO.1” and “DOME” fuses
14IG210
Multiport fuel injection
system/sequential multiport
fuel injection system, SRS
airbag system, seat belt
pretensioners, cruise control
system
15ST5Starting system
16ADJ PDL30Power adjustable pedals
17CDS30Electric cooling fan

ELECTRICAL COMPONENTS
393
No.FUSEAMPERECIRCUIT
18ABS No.240
Anti−lock brake system,
vehicle stability control system,
traction control system, brake
assist system
19MAIN40
All components in “HEAD LH
LWR”, “HEAD RH LWR”, “HEAD
LH UPR”, “HEAD RH UPR” and
“DRL” fuses
20ABS No.330
Anti −lock brake system,
vehicle stability control system,
traction control system, brake
assist system
21HTR50Air conditioning system
22RDI30Electric cooling fan
23SPARE5Spare fuse
24SPARE10Spare fuse
No.FUSEAMPERECIRCUIT
25ABS NO.150
All components in “RDI FAN”,
“ABS No.2”, “ABS No.3”, “CDS”,
“HTR (50 A)” and “ADJ PDL”
fuses and anti −lock brake
system, vehicle stability control
system, traction control
system, brake assist system
26ALT120
All components in “DEF”, “PWR
NO.1”, “PWR NO.2”, “PWR
NO.3”, “PWR NO.4”, “STOP”,
“DOOR NO.2”, “OBD”, “PWR
SEAT”, “FUEL OPEN”, “FOG”,
“AMP”, “PANEL”, “TAIL”,
“AM1”, “CIG”, “POWER
POINT”, “RAD NO.2”,
“ECU− ACC”, “GAUGE1”,
“GAUGE2”, “ECU− IG”,
“WIPER”, “WASHER”, “HTR
(10 A)”, “SEAT HTR” and
“SUN− SHADE” fuses
27SPARE15Spare fuse
28A/C10No circuit
29DRL5Daytime running light system
30HEAD RH
LW R15Right −hand headlight (low
beam)
31HEAD LH
LW R15Left −hand headlight (low
beam) and front fog lights

ELECTRICAL COMPONENTS
395
No.FUSEAMPERECIRCUIT
43MIR
HTR10Outside rear view mirror
defogger
44AM15Starting system
45FOG15Front fog lights
46SUN
SHADE15Rear sunshade
47GAUGE210
Auto anti −glare inside rear
view mirror, compass, back −up
lights, automatic light control
system, automatic headlight
leveling system, cruise control
system, seat belt reminder
lights
48PANEL10
Glove box light, console box
light, clock, outside
temperature gauge,
multi− information display,
instrument cluster lights,
instrument panel lights
49TAIL10Tail lights, parking lights,
license plate lights
50PWR NO.420Rear passenger’s power
window (left side)
No.FUSEAMPERECIRCUIT
51PWR NO.220Front passenger’s door lock
system, front passenger’s
power window
52OBD7.5On −board diagnosis system
53SEAT
HTR20Seat ventilators/heaters
54WASHER15Windshield washer
55FA NRLY10Electric cooling fans
56STOP15Stop lights, high mounted
stoplight
57FUEL
OPEN5Fuel filler door opener
58DOOR NO.225
Multiplex communication
system (power door lock
system, auto −door locking
system, wireless remote
control system)
59AMP25Audio system
60PWR NO.320Rear passenger’s power
window (right side)