Lexus LS400 owner's manual: Electrical components

ELECTRICAL COMPONENTS

▶Engine compartment

64L008-1

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ELECTRICAL COMPONENTS

251

ELECTRICAL COMPONENTS

\begin{tabular}{|l|l|l|l|} \hline No. & FUSE & AMPERE & CIRCUIT \ \hline 23 & AIR SUS & 20 & Height control system \ \hline 24 & D RR DOOR & 20 & Rear door lock, Rear power window \ \hline 25 & HORN & 10 & Horns \ \hline 26 & ETCS & 15 & Electronic throttle control system \ \hline 27 & H-LP L UPR & 10 & Left-hand headlight (high beam) \ \hline 28 & H-LP R UPR & 10 & Right-hand headlight (high beam) \ \hline 29 & EFI NO.2 & 10 & Emission control system \ \hline 30 & MIR-HTR & 15 & Outside rear view mirror defogger \ \hline 31 & FR S/HTR & 15 & Seat heater \ \hline 32 & ALT-S & 7.5 & Charging system \ \hline 33 & TEL & 15 & Telephone \ \hline 34 & CRT & 15 & Multi information display \ \hline 35 & RADIO NO.1 & 20 & Audio system \ \hline 36 & MPX-B & 10 & Power window, Door lock, Tilt and telescopic steering \ \hline 37 & ECU-B & 7.5 & Vehicle skid control system, Daytime running light system \ \hline 38 & HAZ & 10 & Emergency flashers \ \hline \end{tabular}

\begin{tabular}{|l|l|l|l|} \hline No. & FUSE & AMPERE & CIRCUIT \ \hline 39 & EFI NO.1 & 20 & Multiport fuel injection system/sequential multiport fuel injection system \ \hline 40 & DOME & 10 & Interior light, Vanity lights, Foot lights, Rear personal light, Garage door opener \ \hline 41 & OBD & 7.5 & On-board diagnosis system \ \hline 42 & DRL & 10 & Vehicles sold in Canada Daytime running light system \ \hline 43 & H-LP R LWR & 15 & Right-hand headlight (low beam) \ \hline 44 & H-LP L LWR & 15 & Left-hand headlight (low beam) \ \hline \end{tabular}

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ELECTRICAL COMPONENTS

CHECKING BATTERY CONDITION

Precautions

CAUTION

BATTERY PRECAUTIONS The battery produces flammable and explosive hydrogen gas.

• Do not cause a spark by contacting the battery terminals with tools.
• Do not smoke or light a match near the battery. The electrolyte contains poisonous and corrosive sulfuric acid.
• Avoid contact with eyes, skin or clothes.
• Never inhale or swallow electrolyte.
• Wear protective safety glasses when working near the battery.
• Keep children away from the battery.

EMERGENCY MEASURES

• If electrolyte gets in your eyes, flush your eyes with clean water for at least 15 minutes and get immediate medical attention. If possible, continue to apply water with a sponge or cloth while traveling to the medical office.
• If electrolyte gets on your skin, thoroughly wash the contacted area. If you feel a pain or burn, get medical attention immediately.
• If electrolyte gets on your clothes, there is a possibility of its soaking through to your skin, so immediately take off the exposed clothing and follow the procedure above, if necessary.
• If you happen to swallow electrolyte, drink a large quantity of water or milk. Follow with milk of magnesia, beaten raw egg or vegetable oil. Then go immediately for emergency help.

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ELECTRICAL COMPONENTS

Checking battery exterior

▶ 1 Terminals 2 Hold-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 battery, 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.

6

254

ELECTRICAL COMPONENTS

Checking battery fluid

There are 2 types of batteries: maintenance type and non-maintenance type.

A non-maintenance battery has "MAINTENANCE FREE BATTERY" 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 hydrometer.

Non-maintenance battery

Check the battery condition by the hydrometer on the top of the battery.

(a) Checking by the fluid level lines (Maintenance type battery only)

▶ 1 Upper line 2 Lower line

The fluid (electrolyte) level must be between the upper and lower lines.

When checking the fluid level, look at all six cells, not just one or two.

If the level is lower than the lower line, add distilled water. (See "Adding distilled water" on page 257.)

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ELECTRICAL COMPONENTS

(b) Checking by the hydrometer

Check the battery condition by the hydrometer color.

Maintenance type battery [1] BLUE – Good condition. [2] WHITE – Charging necessary. Have the battery checked by your Lexus dealer. [3] RED – Add distilled water. (See "Adding distilled water" on page 257.)

Non-maintenance type battery [1] BLUE – Good condition. [2] WHITE – Charging necessary. Have the battery checked by your Lexus dealer. [3] RED – Have the battery checked by your Lexus dealer.

NOTICE (For non-maintenance type battery): Do not refill the battery with water.

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ELECTRICAL COMPONENTS

Adding distilled water (Maintenance type battery only)

► 1 Low 2 O.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 heavy charging, 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.

NOTICE Never recharge the battery while the engine is running. Also, make sure all accessories are turned off.

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ELECTRICAL COMPONENTS

CHECKING AND REPLACING THE BLADE TYPE FUSES

►Driver’s side instrument panel

►Engine compartment 1 Spare fuses 2 Pull-out tool

1. Turn the ignition switch off and open the fuse box lid.

Determine which fuse may be causing the problem. The lid of the fuse box shows the name of the circuit for each fuse.

2. Make sure the inoperative component is turned off. Pull the suspected fuse straight out with the pull-out tool and check it. If it has blown, push a new fuse into the clips.

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ELECTRICAL COMPONENTS

▶Good ▶Blown

a. Look carefully at the fuse. If the thin wire is broken, the fuse has blown. If you are not sure or if it is too dark to see, try replacing the suspected fuse with one of the same value that you know is good.

b. Only install a fuse with the amperage rating designated on the fuse box lid.

If you do not have a spare fuse, in an emergency you can pull out the "RADIO NO.1" "MIR-HTR" or "OBD" fuse, which may be dispensable for normal driving, and use it if its amperage rating is the same.

If you cannot use one of the same amperage, use one lower than, but as close as possible to, the amperage. If the amperage is lower than that specified, the fuse might blow out again but this does not indicate anything wrong. Be sure to get the correct fuse as soon as possible and return the substitute to its original clips.

It is a good idea to purchase a set of spare fuses and keep them in your vehicle for emergencies.

If the new fuse immediately blows out, there is a problem with the electrical system. Have your Lexus dealer correct it as soon as possible.

CAUTION

Never use a fuse with a higher amperage rating, or any other object, in place of a fuse. This may cause extensive damage and possibly a fire.

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ELECTRICAL COMPONENTS

CHECKING THE CARTRIDGE TYPE FUSES

▶ 1 Good 2 Melted

If the headlights or other electrical components do not work and the blade type fuses are O.K., check the cartridge type fuses. If any of the cartridge type fuses are blown, they must be replaced.

If there is an overload in the circuits from the battery, the fuses are designed to blow before the entire wiring harness is damaged.

Always use a genuine Lexus fuse or equivalent for replacement. Never install an ordinary wire—even for a temporary fix. This may cause extensive damage and possibly a fire.

NOTICE Before replacing the fuses, have the cause of electrical overload determined and repaired by your Lexus dealer.

CAUTION

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ELECTRICAL COMPONENTS

ADDING WASHER FLUID

If the washer tank becomes nearly empty, add washer fluid.

You may use plain water as washer fluid. However, in cold areas where temperatures range below the freezing point, use washer fluid containing antifreeze. This product is available at your Lexus dealer and most auto parts stores. Follow the manufacturer’s directions for how much to mix with water.

NOTICE Do not use engine antifreeze or any other substitute because it may damage your vehicle’s paint.

CHECKING THE HEADLIGHT AIM

(Vehicles with discharge headlight only)

► 1 Adjusting bolt (vertical movement) 2 Beam angle gauge and adjusting bolt (horizontal movement)

Before checking the headlight aim:

1. Be sure that the body around the headlight is not deformed.
2. Park the vehicle on a level spot.
3. The driver gets into the driver’s seat and puts the vehicle in a state readying for a driving (with a full tank).
4. Bounce the vehicle several times.

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ELECTRICAL COMPONENTS

Adjusting the vertical aiming

If you adjust the vertical aiming alone, the horizontal beam angle is also affected. To prevent the horizontal beam angle from being incorrect, follow all the steps 1. to 4.

▶Lock ▶Unlock

1. To release the lock of the horizontal movement adjusting bolt, push the lock release with your finger.

2. Turn the vertical movement adjusting bolt in either direction. At this time, keep the turning direction and number of turns in mind.

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ELECTRICAL COMPONENTS

3. Turn the horizontal movement adjusting bolt the same number of turns and in the same direction at step 2.
4. Push the lock release of the horizontal movement adjusting bolt in the opposite direction as you did at step 1 to lock the adjusting bolt.

Adjusting the horizontal aiming

► 1 Mark 2 Acceptable range Horizontal movement gauge: The mark should not deviate by more than 2 marks to either side of the gauge. If the error is over the value specified above, take the vehicle to your Lexus dealer to adjust the headlight aim.

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ELECTRICAL COMPONENTS

REPLACING LIGHT BULBS

The illustration on the following pages show the locations of light bulbs. If it is necessary to replace a bulb, take your vehicle to your Lexus dealer as soon as possible. Use bulbs with the bulb numbers and wattage ratings given in the table.

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

ELECTRICAL COMPONENTS

ELECTRICAL COMPONENTS

A: HB3 halogen bulbs B: D2R discharge bulbs C: HB4 halogen bulbs D: Wedge base bulbs E: Double end bulbs F: Single end bulbs

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SECTION 6 – 5

SERVICE PROCEDURES AND SPECIFICATIONS

Body

• Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........ 269
• Protecting your vehicle from corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........ 270
• Washing and waxing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........

SPECIFICATIONS

– DIMENSIONS AND WEIGHT

*: Unladen vehicle

– FUEL TANK

| Capacity | 85 L (22.5 gal., 18.7 lmp.gal.) |

BODY 269

BODY

PROTECTING YOUR VEHICLE FROM CORROSION

Proper care of your Lexus can help ensure long-term corrosion prevention.

The most common causes of corrosion to your vehicle are:

• The accumulation of road salt, dirt and moisture in hard-to-reach areas under the vehicle.
• Chipping of paint or undercoating caused by minor accidents or by stones and gravel.

The following conditions will cause or accelerate corrosion of your vehicle, so it is important to keep your vehicle, particularly the underside, as clean as possible and to repair any damage to paint or protective coatings as soon as possible.

• The presence of road salt or dust control chemicals, salt in the air near the sea coast, industrial air pollution.
• High humidity, especially at temperatures just above freezing point.
• Certain parts of your vehicle are wet or damp for an extended period of time, even though other parts of the vehicle are dry.
• Components of the vehicle which are prevented from quick-drying due to lack of proper ventilation are exposed to high temperature.

To help prevent corrosion on your Lexus, follow these guidelines:

Keep your vehicle clean by regular washing. In addition, observe the following points.

• If you drive on salted roads in the winter or if you live near the ocean, you should hose off the undercarriage at least once a month to minimize corrosion.
• High pressure water or steam is effective for cleaning the vehicle's underside and wheel housings. Pay particular attention to these areas as it is difficult to see all the mud and dirt. It will do more harm than good to simply wet the mud and debris without removing them. The lower edge of doors, rocker panels and frame members have drain holes which should not be allowed to clog with dirt as trapped water in these areas can cause corrosion.
• Wash the underside of the vehicle thoroughly when winter is over. See "Washing and waxing" for more tips.

Check the condition of your vehicle's paint and trim. If you find any chips or scratches in the paint, touch them up immediately to prevent corrosion from starting. If the chips or scratches have gone through the bare metal, have a qualified body shop make the repair.

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Check the interior of your vehicle. Water and dirt can accumulate under the floor mats and could cause corrosion. Occasionally check under the mats to make sure the area is dry. Be particularly careful when transporting chemicals, cleansers, fertilizers, salt, etc. These should be transported in proper containers. If a spill or leak should occur, immediately clean and dry the area.

Keep your vehicle in a well ventilated garage or a roofed place. Do not park your vehicle in a damp, poorly ventilated garage. If you wash your vehicle in the garage, or if you drive it in covered with water or snow, your garage may be so damp it will cause corrosion. Even if your garage is heated, a wet vehicle can corrode if the ventilation is poor.

BODY

WASHING AND WAXING

Washing your Lexus

Keep your vehicle clean by regular washing.

The following cases may cause weakness to the paint or corrosion to the body and parts. Wash your vehicle as soon as possible.

• When driving in a coastal area
• When driving on a road sprinkled with antifreeze
• When having stuck of coal tar, tree sap, bird droppings and carcass of an insect.
• When driving in the areas where there are a lot of smoke, soot, dust, iron dust and chemical substance
• When the vehicle becomes remarkably dirty with dust and mud

Hand-washing your Lexus

Work in the shade and wait until the vehicle body is not hot to the touch.

1. Rinse off loose dirt with a hose. Remove any mud or road salt from the underside of the vehicle or in the wheel wells.

2. Wash with a mild car-wash soap, mixed according to the manufacturer’s instructions. Use a soft cotton mitt and keep it wet by dipping it frequently into the wash water. Do not rub hard – let the soap and water remove the dirt.

BODY

Aluminum 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.

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BODY

CLEANING THE INTERIOR

CAUTION

• Be careful not to splash water or spill liquid on the floor. This may prevent the side airbags from activating correctly, resulting in serious injury.
• Do not wash the vehicle floor with water, or allow water to get onto the floor when cleaning the vehicle interior or exterior. Water may get into audio components or other electrical components above or under the floor carpet (or mat) and cause a malfunction; and it may cause body corrosion.

Leather Interior

The selected leather is used in your Lexus. Due to a leather product, some parts of leather may be rough, uneven or scratched originally.

To keep good appearance, we recommend you to clean it periodically twice a year.

Remove dirt on the leather in the following ways:

1. Wipe it off lightly using a soft cloth (e.g. gauze) dampened with 5% solution of neutral detergent for wool.
2. Wring water from a clean cloth and thoroughly wipe off all traces of detergent with it.
3. Wipe off the surface of the leather with a dry soft cloth. Allow the leather to dry in a ventilated shaded area. Excess of wet may cause the hardening or shrinking of the leather.

NOTICE

• 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 neutral detergent, apply a cleaner that does not contain an organic solvent.
• Never use organic substances such as benzine, 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 always clean.
• Long exposure to direct sunlight may cause the leather surface to harden and shrink. Keep your vehicle in a shaded area, especially in the summer.
• The interior of your vehicle is apt to heat up on hot summer days, so avoid placing on the upholstery items made of vinyl or plastic or containing wax as these tend to stick to leather when warm.
• Improper cleaning of the leather upholstery could result in discoloration or staining.

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BODY

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 window cleaner 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 to 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 may weaken them.
• The windows may be cleaned with any household window cleaner.
• When cleaning the inside of the rear window, be careful not to scratch or damage the heater wires.

274 6

BODY

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 or acidic solutions. These chemicals can cause discoloring, staining or peeling of the surface.
• If you use cleaners or polishing agents, make sure their ingredients do not include the substances mentioned above.
• If you use a liquid car freshener, do not spill the liquid onto the vehicle’s interior surfaces. It may 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.

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SECTION 7

REPORTING SAFETY DEFECTS FOR U.S. OWNERS

Reporting safety defects for U.S. owners . . . . . . . . . . . . . . . . . . . . . 276

REPORTING SAFETY DEFECTS FOR U.S. OWNERS

If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying Toyota Motor Sales, U.S.A., Inc. (Toll-free: 1-800-25-LEXUS).

If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in individual problems between you, your dealer, or Toyota Motor Sales, U.S.A., Inc.

To contact NHTSA, you may either call the Auto Safety Hotline toll-free at 1-800-424-9393 (or 366-0123 in Washington.D.C. area) or write to: NHTSA, U.S. Department of Transportation, Washington. D.C. 20590. You can also obtain other information about motor vehicle safety from the Hotline.

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7

INDEX

277

INDEX (A – C)

A

"ABS" warning light 178
Adding washer fluid ………………… 261
Adjustment
 Driver’s seat lumbar support ………… 73
 Front seat cushion angle and height …… 72
 Front seat position ………………… 71
 Front seatback angle 72
 Seat belts ………………………… 80
Airbags (SRS) ……………………… 86
Aluminum wheel precautions ………… 247
Antifreeze ………………………… 233
Anti–lock brake system …………… 177
Anti–theft steering column lock ……… 157
Appearance care
 Cleaning the interior 273
 Protecting your Lexus from corrosion … 270
 Washing and waxing 271
Audio system ……………………… 132
Automatic air conditioning controls …… 121
Automatic transmission
 Driving with an automatic
  transmission …………………… 160
 Shift pattern ……………………… 160
 Shifting speed …………………… 163
Auxiliary catch, Engine hood ………… 62

B

Battery
 Checking battery condition ………… 253
 Recharging precautions …………… 257
 Winter driving tips ……………… 182
Before starting the engine …………… 157
Belts
 Seat belts ………………………… 80
Brake pad wear limit warning light …… 178
Brake system warning light …………… 37
Brakes
 Anti–lock brake system …………… 177
 Booster ………………………… 176
 Braking tips ……………………… 176
 Fluid level ……………………… 239
 Pad wear limit warning light ………… 178
 Parking ………………………… 158
 Parking brake reminder light ………… 37
Break–in period ……………………… 181
Brightness control …………………… 46

C

Carbon monoxide caution …………… 156
Cassette tape player 140
Car audio operating tips …………… 148
Center vents ……………………… 130
Checking and replacing the
 blade type fuses ………………… 258
Checking brake fluid ……………… 239
Checking the cartridge type fuses …… 260
Checking the engine oil level ………… 230
Child restraint ……………………… 98
Child restraint precautions ………… 98
Child–protector, Rear door ………… 19
Cigarette lighter and ashtray ………… 52
Cleaning the interior ……………… 273
Clock ……………………………… 51
Cold weather, Operation …………… 182
Compact disc player ……………… 143
Converter, Three–way catalytic ……… 155

INDEX (C – E)

Consumer information Uniform tire quality grading . . . . . . . . . 244 Controls, Instrument panel . . . . . Pictorial index Cooling system Coolant level . . . . . . . . . . . . . . . . 233 Engine overheating . . . . . . . . . . . . . 196 Radiator and reservoir . . . . . . . . . . 233 Radiator cap . . . . . . . . . . . . . . . . 196 Winter driving tips . . . . . . . . . . . . 182 Corrosion prevention 270 Cruise control . . . . . . . . . . . . . . . . 168 Cruise information . . . . . . . . . . . . . 42 Cup holder . . . . . . . . . . . . . . . . . . 56

D

Defogger, Rear window . . . . . . . . . . . 27 Dimmer switch, Headlight . . . . . . . . . 5, 24 Directional signals . . . . . . . . . . . . . 5, 24 Discharge warning light . . . . . . . . . . 39 Does your vehicle need repairing? . . . . 217 Do-it-yourself maintenance . . . . . . . . 221 Door locks . . . . . . . . . . . . . . . . . . 18 Driver’s seat . . . . . . . . . . . . . . . . 2, 70 Driving Automatic transmission . . . . . . . . . 160 Driving tips . . . . . . . . . . . . . . . . 180 Driving position memory system . . . . . 113 Driving tips Driving tips in various conditions . . . 181 Driving with an automatic transmission . . . . . . . . . . . . . . 160 Economical driving . . . . . . . . . . . . 189 Good braking practice . . . . . . . . . . 176 Good driving practice 166 Winter driving tips . . . . . . . . . . . 182 During break-in . . . . . . . . . . . . . . 181

E

Economical driving . Saving money on both fuel and repairs . . . . . . . . . . . . . . . . . 189 Electrical system Battery . . . . . . . . . . . . . . . . . 253, 257 Fuse locations . . . . . . . . . . . . . . 249 Fuses . . . . . . . . . . . . . . . . . . 249, 258, 260 Spark plugs . . . . . . . . . . . . . . . . 226 Electronic throttle control system . . . . 167 Emergency flasher switch . . . . . . . . . 31 Emergency, in case of Blown fuse . . . . . . . . . . . . . . . . 259 Emergency flasher switch . . . . . . . . 31 Flat tire . . . . . . . . . . . . . . . . . 197 If you lose your keys 210 If your vehicle needs to be towed . . . . 205 If your vehicle will not start . . . . . . 193 Jump starting . . . . . . . . . . . . . . . 194 Overheating . . . . . . . . . . . . . . . . 196 Towing . . . . . . . . . . . . . . . . . . . 205 Engine Antifreeze . . . . . . . . . . . . . . . . 233 Before starting the engine . . . . . . . 157

279

INDEX (E –G)

Checking the coolant level . . . . . . . . . . . . 233 Coolant . . . . . . . . . . . . . . . . . . . . . . 233 Coolant temperature gauge . . . . . . . . . . 34 Emission control device . . . . . . . . . . . 155 Engine compartment 220 . . . . . . . . . . . . Exhaust gas caution . 156 . . . . . . . . . . . . . Hood release . . . . . . . . . . . . . . . . . . . 62 Oil consumption . . . . . . . . . . . . . . . . 229 Oil level . . . . . . . . . . . . . . . . . . . . . 230 Overheating . . . . . . . . . . . . . . . . . . 196 Spark plugs . . . . . . . . . . . . . . . . . . . 226 Starting procedure . . . . . . . . . . . . . . 159 Three-way catalytic converter . . . . . . 155 Engine coolant, Winter driving tips . . . . 182 Engine immobiliser system . . . . . . . . . 10 Engine oil, Winter driving tips . . . . . . 182 Engine coolant temperature gauge . . . . 34 Exhaust gas caution . . . . . . . . . . . . . 156

F

Facts about engine oil consumption . . . . 229 Flasher, Headlight . . . . . . . . . . . . . . 5, 24 Flat tire After changing wheels . . . . . . . . . . . 204 Changing tires . . . . . . . . . . . . . . . . 202 If you have a flat tire 197 . . . . . . . . . . Jack point . . . . . . . . . . . . . . . . . . 201 Jacking precautions . . . . . . . . . . . . 197 Jacking up . . . . . . . . . . . . . . . . . . 201 Loosening wheel nuts201 . . . . . . . . . . . . Lowering vehicle . . . . . . . . . . . . . . 203 Reinstalling wheel ornament . . . . . . . 204 Removing wheel ornament . . . . . . . . . 200 Wheel block . . . . . . . . . . . . . . . . . 200 Wheel nuts . . . . . . . . . . . . . . . . . . 201 Floor mat . . . . . . . . . . . . . . . . . . . 58 Fluid level Brake . . . . . . . . . . . . . . . . . . . . 239 Engine coolant . . . . . . . . . . . . . . . 233 Power steering . . . . . . . . . . . . . . . 240 Washer fluid . . . . . . . . . . . . . . . . 261 Fog light . . . . . . . . . . . . . . . . . . . 25 Foreign countries, Operation in . . . . . 181

Front seat Lumbar support . . . . . . . . . . . . . . . 73 Position . . . . . . . . . . . . . . . . . . . 71 Seat cushion angle and height . . . . . . 72 Seatback angle . . . . . . . . . . . . . . . 72 Fuel Filler door opener . . . . . . . . . . . . . 65 Fuel economy . . . . . . . . . . . . . . . . 189 Fuel information . . . . . . . . . . . . . . 227 Gauge . . . . . . . . . . . . . . . . . . . . . 34 MTBE . . . . . . . . . . . . . . . . . . . . . 228 Operation in foreign countries . . . . . 181 Tank cap . . . . . . . . . . . . . . . . . . . 65 Fuse Blade type fuses . . . . . . . . . . . . . . 258 Cartridge type fuses . 260 . . . . . . . . . . Fuse locations . . . . . . . . . . . . . . . 249 Fuse box . . . . . . . . . . . . . . . . . . . 220

G

Garage door opener . . . . . . . . . . . . . 54 Gas station information . . . Inside back cover Gauge Engine coolant temperature . . . . . . . 34 Fuel . . . . . . . . . . . . . . . . . . . . . 34 Glovebox . . . . . . . . . . . . . . . . . . . 54 Good driving practice 166 . . . . . . . . . .

280

INDEX (H – L)

H

• Hazard switch ........ 31
• Headlight cleaner switch ........ 27
• Headlight switch ........ 5,22
• Head restraints ........ 73
• Height control system 171 ........
• High speed operation
  • During break-in ........ 181
• Hood release, Engine 62 ........
• How to start the engine ........ 159

I

• Identification
  • Engine ........ 219
  • Vehicle ........ 219
• Ignition switch ........ 157
• Ignition switch light ........ 50
• Instrument panel
  • Brightness control ........ 46
  • Cigarette lighter and ashtray ........ 52
  • Clock ........ 51
  • Fuel gauge ........ 34
  • Multi information display ........ 41
  • Odometer ........ 36
  • Outside temperature display ........ 51
  • Tachometer ........ 35
  • Trip meter ........ 36
  • Twin trip meter ........ 36
• Inside rear view mirror ........ 79
• Instrument panel light control ........ 46
• Instrument panel overview ........ Pictorial index
• Interior lights ........ 49

J

• Jack, location ........ 198
• Jump starting ........ 194

K

• Keys ........ 8
• Key reminder buzzer 40 ........

L

• Light bulbs, Replacing ........ 264
• Lock
  • Doors ........ 18
  • Steering column ........ 157
  • Trunk lid ........ 63
  • Trunk lid opener ........ 64
• Low fuel level warning light ........ 34
• Lower vent ........ 131
• Luggage stowage precautions ........ 59

281

INDEX (M – Q)

M

Maintenance

• Do-it-yourself maintenance ………… 221
• Does your vehicle need repairing? …… 217
• General maintenance 214
• Maintenance requirements ………… 213
• Parts and tools …………………… 222
• Where to go for service? …………… 213

Malfunction indicator lamp …………… 39

Multi information display ……………… 41

Maximum allowable speed ……………… 164

Mirrors

• Anti-glare inside rear view …………… 79
• Folding rear view …………………… 79
• Outside rear view …………………… 77
• Power rear view …………………… 78
• Vanity ……………………………… 48

Moon roof ……………………………… 66

MTBE …………………………………… 228

N

New vehicle break-in 181

O

Odometer ……………………………… 36

Oil

• Checking the engine oil ……………… 230
• Consumption ………………………… 229
• Power steering ……………………… 240
• Viscosity and grade ………………… 232

Opener

• Trunk lid …………………………… 63
• Fuel filler door ……………………… 65

Operation in foreign countries ………… 181

Outside rear view mirrors ……………… 77

Overheating, Engine 196

Overview

• Engine compartment 220

P

Parking brake

• Operation …………………………… 158
• Reminder light ……………………… 37

Parts …………………………………… 222

Personal lights ………………………… 50

Polishing ……………………………… 271

Power door locks ……………………… 19

Power outlet …………………………… 53

Power rear view mirror control ………… 78

Power steering fluid level ……………… 240

Power window switches ………………… 28

Protecting your Lexus from corrosion … 270

Q

Quick index …………………………… Back cover

INDEX (R – S)

R

• Radiator coolant, Engine ………………… 233
• Radio …………………………………… 137
• Radio, FM reception tips ……………… 149
• Rear door child–protector ……………… 19
• Rear vents ……………………………… 131
• Rear view mirror, Anti–glare inside …… 79
• Rear view mirrors, Folding ……………… 79
• Rear view mirrors, Outside ……………… 77
• Rear view mirrors, Power ……………… 78
• Rear window defogger switch …………… 27
• Reporting safety defects
  • for U.S. owners ……………………… 276

S

• Safety
  • Reporting safety defects
    • for U.S. owners …………………… 276
• Scrapping of your vehicle ……… Introduction
• Seats, Seat adjustments ……………… 70
• Seat belt extender …………………… 84
• Seat belt pretensioners ……………… 86
• Seat belt reminder light ……………… 38
• Seat belts
  • Cleaning …………………………… 274
  • Fastening …………………………… 81
  • Seat belt precautions 80
• Seat heater switch …………………… 32
• Service and maintenance ……………… 213
• Service reminder indicators …………… 36
• Shoulder belt anchor adjustment ……… 83
• Side vents ……………………………… 130
• Slip indicator light …………………… 173
• Spare tire ……………………………… 198
• Spark plugs …………………………… 234
• Specifications
  • Engine ……………………………… 225, 226
  • Chassis ……………………………… 237, 238
  • Electrical component 249, 250
  • Body ………………………………… 269
• SRS warning light …………………… 38

Starting

• Cold weather ………………………… 182
• Engine ………………………………… 159
• Jump starting ………………………… 194

Steering

• Column lock …………………………… 157
• Telescopic steering column …………… 76
• Tilt steering wheel …………………… 76

Sun visors ……………………………… 48

Supplemental restraint system (SRS) …… 86

Suspension and chassis ………………… 247

Switch

• Emergency flasher …………………… 31
• Fog light ……………………………… 25
• Headlight ……………………………… 5,22
• Headlight cleaner ……………………… 5,27
• Headlight dimmer and turn signal ……… 24
• Ignition ………………………………… 157
• Rear window defogger ………………… 27
• Windshield wiper and washer …………… 25

INDEX (T – W)

T

• Tachometer ........ 35
• Telescopic steering column ........ 76
• Theft deterrent system ........ 117
• Theft prevention labels ........ 119
• Tilt steering wheel ........ 76 Tires
• Chains ........ 245
• Changing ........ 202
• Flat tire ........ 197
• Inflation ........ 241
• Rotation ........ 242
• Snow ........ 245
• Spare ........ 198
• Tire information ........ 241
• Types ........ 179
• Uniform tire quality grading ........ 244
• Tools ........ 222 Towing
• Emergency towing ........ 208
• If your vehicle needs to be towed ........ 205
• Trailer ........ 183
• Traction control system ........ 173
• Trailer towing ........ 183
• Transporting your Lexus by flat bed ........ 206
• Trip meter ........ 36
• Trunk lid ........ 63
• Trunk lid opener ........ 64
• Turn signals ........ 24

V

• Vanity mirrors ........ 48
• Vehicle skid control system ........ 174

W

• Warning buzzers ........ 36
• Warning messages ........ 44 Washer fluid, Adding 261
  Washing and waxing 271
• Wheels, Aluminum ........ 247
• Windshield wiper and washer switch ........ 25
• Winter driving tips ........ 182
• Wireless remote control transmitter ........ 11

284

WE REALLY CARE ABOUT YOU – PLEASE BUCKLE UP

Lexus has made a special effort to encourage use of seat belts.

Lexus belts are: ● Comfortable ● Easy to use ● Convenient

We encourage you to use your belts every time you drive.

LS400 (U) 表 2

GAS STATION INFORMATION

• Fuel selection: Select premium unleaded gasoline with an Octane Rating of 91 (Research 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).
• Fuel tank capacity: 85 L (22.5 gal., 18.7 Imp.gal.)
• Engine oil: API SH, "Energy-Conserving II" or SJ, "Energy-Conserving" multigrade engine oil or ILSAC multigrade engine oil. Recommended oil viscosity – SAE 5W-30 if normal temperatures are below 38°C (100°F) Oil capacity: L (qt., lmp.qt.) Drain and refill with filter 5.6 (5.9, 4.9) without filter 5.3 (5.6, 4.7) See page 230 for detailed information.
• Engine coolant: Capacity: 10.8 L (11.4 qt, 10.4 lmp.qt.) Coolant type – Ethylene – glycol coolant (Do not use alcohol coolant.) For checking the engine coolant, see page 233. For changing the engine coolant, see the label on the coolant reservoir.
• Automatic transmission: Fluid type – Automatic transmission fluid Type T-IV or equivalent
• Tire information: See page 241 through 247 for detailed information.
• Tire pressure: Tire size: P225/60R16 97V

\begin{tabular}{l c c} \multicolumn{3}{r}{cold tires} \ \multicolumn{3}{r}{kPa (kgf/cm$^2$ or bar, psi)} \ & Vehicle load up & Vehicle loaded up \ & up to occupants & to vehicle capacity \ & & weight \ Front tires . . . . . 200 (2.0, 29) . . . . . 220 (2.2, 32) & & \ Rear tires . . . . . 200 (2.0, 29) . . . . . 220 (2.2, 32) & & \ \end{tabular}

For sustained high speeds above 160 km/h (100 mph), in countries where such speeds are permitted by law, add 80 kPa (0.9 kgf/cm², 0.8 bar, 12 psi) to the front tires and rear tires, but never exceed the maximum cold tire pressure molded on the tire sidewall.

表 3 LS400 (U) 98

You should know as much about the quality and importance of proper maintenance of your new vehicle as the people who built it.

The Lexus authorized Repair Manual tells you how to maintain your vehicle and enables you to correctly perform your own maintenance.

The best way to keep your new vehicle in top running order is to maintain it properly from the moment you drive it off the showroom floor.

The Lexus authorized Repair Manual is packed with literally everything you need to know to perform your own maintenance in virtually every area of your new vehicle.

Maintenance procedures for the engine, chassis, body, electrical system, and more, are clearly explained and illustrated.

Periodic maintenance and tune-up

Periodic maintenance and tune-up helps to prevent small problems from growing into larger ones later on. The repair manual outlines exactly what maintenance is required, provides a schedule for its performance, and clearly explains how to do the work yourself step-by-step.

Areas covered include such things as spark plug replacement, valve clearance adjustment and engine oil and filter replacement.

Where to obtain the Repair Manual

The repair manual for LS400, written in English, may be purchased as applicable from any Lexus dealer. Pub. Name: 1998 LS400 Repair Manual Pub. No.: Vol.1 RM578U1 Vol.2 RM578U2

Quick index

• If a service reminder indicator or warning buzzer comes on . . . . . . . . . . . . . . . . . 36
• If your vehicle will not start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........ 193
• If your vehicle overheats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........ 196
• If you have a flat tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........