check engine Lexus ES300 1998 s (in English) Owner's Guide

MAINTENANCE
184
Power steering fluid level
Check the level through the reservoir. The level should be in the ºHOTº or
ºCOLDº range depending on the fluid temperature. See page 206 for
additional information.
Exhaust system
Look for cracks, holes and loose supports. If you notice any change in the
sound of the exhaust or smell exhaust fumes, have the cause located and
corrected immediately. (See engine exhaust cautions in Section 3±1.)
DOES YOUR VEHICLE NEED
REPAIRING?
Be on the alert for changes in performance and sounds, and visual tip±o\
ffs that
indicate service is needed. Some important clues are:

Engine missing, stumbling, or pinging

Appreciable loss of power

Strange engine noises

A fluid leak under the vehicle (However, water dripping from the air
conditioning after use is normal.)

Change in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked
immediately.)

Flat±looking tires, excessive tire squeal when cornering, uneven tire wear

Vehicle pulls to one side when driving straight on a level road

Strange noises related to suspension movement

Loss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches floors, vehicle pulls to one side when braking

Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to your Lexus dealer a\
s soon
as possible. It probably needs adjustment or repair.
CAUTION
Do not continue driving with the vehicle unchecked. It could
result in serious vehicle damage and possibly personal injury.

INTRODUCTION189
NOTICE

Remember that battery and ignition cables carry high currents or
voltages. Be careful of accidentally causing a short circuit.

Before closing the engine hood, check to see that you have not
forgotten any tools, rags, etc.

Do not drive with the air cleaner removed, or excessive engine wear
could result. Also backfiring could cause a fire in the engine
compartment.

Do not overfill automatic transmission fluid, or the transmission could
be damaged.

Be careful not to scratch the glass surface with the wiper frame.
PARTS AND TOOLS
Here is a list of parts and tools you will need to perform do±it±y\
ourself
maintenance. Remember all Lexus parts are designed in metric sizes, so your
tools must be metric.
Checking the engine oil level
Parts (if level is low):

Use API grade SH, ºEnergy±Conserving IIº or SJ, ºEnergy±Conservingº
multigrade engine oil or ILSAC multigrade engine oil. For recommended
oil viscosity, see page 200.
Tools:

Rag or paper towel

Funnel (only for adding oil)
Checking the engine coolant level
Parts (if level is low):

Ethylene±glycol coolant

Demineralized or distilled water
Tools:

Funnel (only for adding coolant)

SECTION 6 ± 2
192
SERVICE PROCEDURES AND SPECIFICATIONS
Engine
Specifications193
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. . . . . . . . . . . . . . . . . . . . . . .
Fuel 195
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption 196
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . .
Used engine oil 198
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . . . . .
Checking the engine oil level 198
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. . . . . . . . . . .
Checking the engine coolant level 201
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ENGINE
194
Capacity
Coolant type
9.2 L (9.7 qt., 8.2 lmp.qt.)
Ethylene ± glycol coolant (Do not use alcohol type.)
± FUEL
Fuel type
Octane Rating
Only UNLEADED
87 (Research Octane Number 91) or higher
± IGNITION SYSTEMSpark plug ± Make DENSO NGK
± Gap
PK20TR11
BKR6EKPB11
1.1 mm (0.043 in.)
± ELECTRICAL SYSTEM
Battery ± Maintenance type battery Specific gravity reading at 20 C (68F):
Charging rates Quick charge Slow charge
± Non±maintenance battery Open voltage at 20C (68F):
Charging rates
1.260 Fully charged
1.160 Half charged
1.060 Discharged
15A max.
5A max.
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the key is removed with all the
lights turned off]
5A max.

ENGINE197
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 b\
y 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 i\
s
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 cyli\
nder
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.
Importance of engine oil level check
One of the most important points in proper vehicle maintenance is to keep t\
he
engine oil at the optimum level so that oil function will not be impaired.
Therefore, it is essential that the oil level be checked regularly. Lexus
recommends that the oil level be checked every time you refuel the vehicle.
NOTICE
Failure to check the oil level regularly could lead to serious engine
trouble due to insufficient oil.
For detailed information on oil level check, see ºChecking the engine\
oil
levelº on page 198.

ENGINE
198
USED ENGINE OIL
CAUTION
Used engine oil contains potentially harmful contaminants
which may cause skin disorders such as inflammation or
skin cancer, so care should be taken to avoid pr olonged and
repeated contact with it. To remove used engine oil from
your skin, wash thoroughly with soap and water.
 Do not leave used oil within the reach of children.
 Dispose of used oil and used oil filters only in a safe and
acceptable manner. Do not dispose of used oil and used oil
filters in household trash, in sewers or onto the ground.
Call your Lexus dealer or a service station for information
concerning recycling or disposal.
CHECKING THE ENGINE OIL LEVEL
62E001±1
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
1. To get a true reading, the vehicle should be on a level spot. After turni\
ng
off the engine, wait a few minutes for the oil to drain back into the bott\
om of
the engine.
2. Pull out the dipstick, and wipe it clean with a rag.
3. Reinsert the dipstick and push it in as far as it will go, or the reading will
not be correct.
62E002

ENGINE199


1
Add oil 2O.K. 3Too full
4. Pull the dipstick out and look at the oil level on the end. If it is between
the full line (
5 ) and the low line ( 4 ), it is O.K.
62E003±1
If the oil level is below or only slightly above the low line, add engin\
e oil
of the same type as already in the engine.
Remove the oil filler cap and add engine oil a little at a time, checking the
dipstick. The approximate quantity of oil needed to fill between the low line
and the full line on the dipstick is indicated below for reference.
When the level reaches within the correct range, return the filler cap and t\
urn
the cap clockwise until you hear a click.
Oil quantity. L (qt., lmp. qt.) 1.5 (1.6, 1.3)
NOTICE
Avoid overfilling, or the engine could be damaged. Check the oil level on
the dipstick once again after adding the oil.

ENGINE201
CHECKING THE ENGINE COOLANT LEVEL
62E004±3

1Reservoir cap 2Upper line 3Lower line
Park the vehicle at a level spot and look at the see±through coolant
reservoir when the engine is cool. The coolant level is satisfactory if it is
between the upper and lower lines on the tank. If the level is low, add
ethylene±glycol type coolant.
The coolant level in the reservoir will vary with engine coolant temperatur\
e.
However, if the level is on or below the lower line, add coolant to bring the
level up to the upper line.
Use only ethylene±glycol type coolant. For information on ethylene±g\
lycol
coolant, see also ºEngine coolant selectionº described below.
If the coolant level drops within a short time after replenishing, there\
may be
a leak in the system. Visually check the radiator, hoses, radiator cap, 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.
Engine coolant selection
Your coolant must contain ethylene±glycol antifreeze. In addition to
preventing freezing and subsequent damage to the engine, this will also
prevent corrosion. Further supplemental inhibitors or additives are neither
needed nor recommended.
Read
the antifreeze container for information on freeze protection. Follow t\
he
manufacturer 's directions for how much to mix with water. The total capacity
of the cooling system is given on page 193. We recommend 50% solution be
used for your Lexus, or a sufficient quantity to provide protection to about
±35 C (±31F).
NOTICE
Do not use alcohol type antifreeze or plain water alone.

CHASSIS
206
CHECKING POWER STEERING FLUID
63E002±1
Check the fluid level through the reservoir. If necessary, add automatic
transmission fluid DEXRONII or III.
If the vehicle has been driven around 80 km/h (50 mph) for 20 minutes (\
a little
more in frigid temperatures), the fluid is hot (60 C ± 80C or 140F ± 175F).
You may also check the level when the fluid is cold (about room temperatur\
e,
10 C ± 30C or 50F ± 85F) if the engine has not been run for about five
hours.
63E003±1

1 If hot O.K. 2If hot add 3If cold O.K.
4If cold add
Clean all dirt off the reservoir and look at the fluid level. If the fluid is cold,
the level should be in the ºCOLDº range. Similarly, if it is hot, the fluid level
should be in the ºHOTº range. If the level is at the low side of the appropria\
te
range, add automatic transmission fluid DEXRON
II or III to bring the level
within the range.
To remove the filler cap, turn it counterclockwise and lift up. To reinstall it,
turn it clockwise. After replacing the filler cap, visually check the steering \
box
case, vane pump and hose connections for leaks or damage.
CAUTION
The reservoir may be hot so be careful not to burn yourself.

ELECTRICAL COMPONENTS
220
Checking battery exterior
64E007

1Terminals 2Hold±down clamp
Check the battery for corroded or loose connections, cracks, or loose
hold±down clamps.
1. If the battery is corroded, wash it off with a solution of warm water and
baking soda. Coat the terminals with grease to prevent further corrosion.
2. If the connections are loose, tighten the clamp bolts ± but do not
overtighten.
3. Tighten the hold±down clamp only enough to keep the battery firmly in
place. Overtightening may damage the battery case.
NOTICE
 Make sure the engine and all accessories are turned off before
performing maintenance.
 When checking the ba ttery, remove the ground cable first and reinstall
it last.
 Be careful not to cause a short circuit with tools.
 Take care no solution gets into the battery when washing it.
Checking battery fluid
There are 2 types of batteries: maintenance type and non±maintenance
type.
A non±maintenance battery has ºMAINTENANCE FREE BATTERYº on its
top. A maintenance type battery does not have such indication.
Maintenance type battery
Check the fluid condition by the fluid level lines on the side of the battery. Or
if the battery has a hydrometer on its top, you can also check the hydro\
meter.
Non±maintenance battery
Check the battery condition by the hydrometer on the top of the battery.