1999 Lexus LS400 gas type

62L005±1
Temperature range anticipated before next oil change
ENGINE
397
Model
Type
Bore and stroke
Displacement
Valve clearance (engine cold)
Intake
Exhaust
Drive belt tension
1UZ±FE
8 cylinder V type, 4 cycle, gasoline
87.5 X 82.5 mm (3.44 X 3.25 in.)
3969 cm
3 (242.1 cu.in.)
0.15 ± 0.25 mm (0.006 ± 0.010 in.)
0.25 ± 0.35 mm (0.010 ± 0.014 in.)
Automatic adjustment
± LUBRICATION SYSTEM Oil capacity Drain and refillwith filter
without filter
Oil grade

Recommended oil viscosity (SAE):
5.6 L (5.9 qt., 4.9 lmp.qt.)
5.3 L (5.6 qt., 4.7 lmp.qt.)
API SJ, ºEnergy±Conservingº multigrade engine oil or
ILSAC multigrade engine oil

ENGINE
400
FUEL
Fuel type
Your vehicle must use only unleaded gasoline.
To help prevent gas station mixups, your Lexus has a
smaller fuel tank opening. The special nozzle on pumps
with unleaded fuel will fit it, but the larger nozzle on
pumps with leaded gas will not.
At a minimum, the gasoline you use should meet the
specifications of ASTM D4814 in the U.S.A. and CGSB
3.5±M93 in Canada.
NOTICE
Do not use leaded gasoline. Use of leaded gasoline will cause the three±way catalyticconverter to lose its effectiveness and theemission control system to function improperly.Also, this can increase maintenance costs.
Octane rating
Select premium unleaded gasoline with an Octane
Rating of 91 (R esearch Octane Number 96) or higher
for optimum engine performance. However, if such
premium type cannot be obtained, you may
temporarily use unleaded gasoline with an Octane
Rating as low as 87 (Research Octane Number 91). Use of unleaded fuel with an octane number or rating
lower than stated above will cause persistent heavy
knocking. If severe, this will lead to engine damage.
If your engine knocks ...
If you detect heavy knocking even when using the
recommended
fuel, or if you hear steady knocking while
holding a steady speed on level roads, consult your
Lexus dealer.
However, now and then, you may notice light knocking
for a short time while accelerating or driving up hills. This
is no cause for concern.
Gasolines containing detergent additives
Lexus recommends use of gasolines that contain
detergent additives to avoid build±up of engine
deposits.
For further details, ask your Lexus dealer or a local
gasoline retailer.

ELECTRICAL COMPONENTS
451


1Low 2O.K.
1. Remove the vent plugs.
2. Add distilled water to cells needing fluid.
If the side of your battery is covered, check the water
level by looking down directly above the cell as
illustrated above.
3. Retighten the vent plugs securely.
NOTICE
Do not overfill the cells. Excess electrolyte
could squirt out of the battery during heavycharging, causing corrosion or damage.
Use a cover on the battery for longer life.
BATTERY RECHARGING PRECAUTIONS
During recharging, the battery is producing
hydrogen gas.
Therefore, before recharging:
1. Maintenance type batteries ± Remove the vent plugs.
2. If recharging with the battery installed on the vehicle,
be sure to disconnect the ground cable.
3. Make sure the power switch on the recharger is off
when connecting the charger cables to the battery and
when disconnecting them.
CAUTION
 Always charge the battery in an unconfined area. Do
not charge the battery in a garage or closed room
where there is not sufficient ventilation.
 Non±maintenance batteries: Only do a slow charge
(5 A or less). Charging at a quicker rate is dangerous.
The battery may explode causing personal injuries.
Maintenance type batteries: Be sure to remove the
vent plugs before recharging.

ELECTRICAL COMPONENTS
463
CAUTION
Do not disassemble, repair or take apart the low beam
headlight bulbs, connector, power supply circuits
and rotated components. Or you may be injured by
electric shocks. Call your dealer when the headlights
fail to work or have to be replaced or disposed of.
 Halogen bulbs have pressurized gas inside and
require special handling. They can burst or shatter if
scratched or dropped. Hold a bulb only by its plastic
or metal case. Do not touch the glass part of a bulb
with bare hands.
NOTICE
Only use a bulb of the listed type.
LIGHT LOCATION
64L022-5

BODY
474Aluminum wheels:
Use only a mild soap or neutral
detergent.
Urethane bumpers and side moldings: Wash
carefully. Do not scrub with abrasive cleaners. The
bumper and side molding faces are soft.
Road tar: Remove with turpentine or cleaners that are
marked safe for painted surfaces.
NOTICE
Do not use gasoline or strong solvents, which may be toxic or cause damage.
3. Rinse thoroughly ± dried soap can cause streaking.
In hot weather you may need to rinse each section right
after you wash it.
4. To prevent water spots, dry the vehicle using a clean
soft cotton towel. Do not rub or press hard ± you might
scratch the paint.
Automatic car wash
Your vehicle may be washed in an automatic car wash,
but remember that the paint can be scratched by some
type of brushes, unfiltered washing water, or the
washing process itself. Scratching reduces paint
durability and gloss, especially on darker colors. The
manager of the car wash should be able to advise you
whether the process is safe for the paint on your vehicle.
Waxing your Lexus
Polishing and waxing is recommended to maintain
the original beauty of your Lexus' finish.
Once a month or if the vehicle does not repel water well,
apply wax.
1. Always wash and dry the vehicle before you begin
waxing, even if you are using a combined cleaner and
wax.
2. Use a good quality polish and wax. If the finish has
become extremely weathered, use a car±cleaning
polish, followed by a separate wax. Carefully follow the
manufacturer's instructions and precautions. Be sure to
polish and wax the chrome trim as well as the paint.
3. Wax the vehicle again when water does not bead but
remains on the surface in large patches.

BODY
477


Dirt or sand adhered to the leather may damage
the treated surface and cause it to wear earlier.Remove dirt or sand using a vacuum cleaner.

If a stain should fail to come out with a neutraldetergent, apply a cleaner that does notcontain an organic solvent.

Never use organic substances such asbenzine, alcohol or gasoline, or alkaline or acid
solutions for cleaning the leather as these could cause discoloring.

Use of a nylon brush or synthetic fiber cloth,etc. may scratch the fine grained surface of the
leather.

Mildew may develop on soiled leather upholstery. Be especially careful to avoid oil
spots. Try to keep your upholstery alwaysclean.

Long exposure to direct sunlight may causethe leather surface to harden and shrink. Keepyour vehicle in a shaded area, especially in thesummer.

The interior of your vehicle is apt to heat up onhot summer days, so avoid placing on theupholstery items made of vinyl or plastic orcontaining wax as these tend to stick to leather
when warm.

Improper cleaning of the leather upholstery could result in discoloration or staining.
Synthetic Leather Areas
(Dash and sun visors)
The synthetic leather areas may be easily cleaned
with a mild soap or detergent and water.
First vacuum over the upholstery to remove loose dirt.
Then, using a sponge or soft cloth, apply the soap
solution to the synthetic leather. After allowing it to soak
in for a few minutes to loosen the dirt, remove the dirt and
wipe off the soap with a clean damp cloth. If all the dirt
does not come off, repeat the procedure. Commercial
foaming±type cleaners are also available which work
well. Follow the manufacturer's instructions.
NOTICE
Do not use solvent, thinner, gasoline or windowcleaner on the interior.
Carpets, Windows and Seat Belts
Begin by vacuuming thoroughly to remove as much dirt
as possible. Several types of foam cleaners are
available; some are in aerosol cans and others are
powders or liquids which you mix with water to produce
a foam. To shampoo the carpets, use a sponge or brush

BODY
478to apply the foam. Rub in overlapping circles. Do not
apply water ± the best results are obtained by keeping
the carpet as dry as possible. Read the shampoo
instructions and follow them closely.
The seat belts may be cleaned with mild soap and
water or with lukewarm water.
Use a cloth or sponge. As you are cleaning, check the
belts for excessive wear, fraying or cuts.
NOTICE

Use a good foam±type shampoo to clean the
carpets.

Do not use dye or bleach on the belts ± it mayweaken them.

Do not use the belts until they become dry.

The windows may be cleaned with anyhousehold window cleaner.

When cleaning the inside of the rear window, be
careful not to scratch or damage the heater
wires.
Air Conditioning Control Panel, Car
Audio, Instrument Panel, Console Panel,
and Switches
Use a soft damp cloth for cleaning.
Soak a clean soft cloth in water or lukewarm water then
lightly wipe off any dirt.
NOTICE

Do not use organic substances (solvents,kerosene, alcohol, gasoline, etc.) or alkaline oracidic solutions. These chemicals can causediscoloring, staining or peeling of the surface.

If you use cleaners or polishing agents, makesure their ingredients do not include thesubstances mentioned above.

If you use a liquid car freshener, do not spill theliquid onto the vehicle's interior surfaces. Itmay contain the ingredients mentioned above.Immediately clean any spill using the method
mentioned above.
If you have any questions about the cleaning of your
Lexus, your local Lexus dealer will be pleased to
answer them.