1998 Lexus ES300 suspension

For detailed information, refer to the description given in each section.
2.
PICTORIAL INDEX
2Page
1
Door lock switch and power window
switches 14, 23
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2 Headlight, turn signal and fog light switch 17
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3 Power rear view mirror control switch 63
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4 Instrument panel light control 35
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5 Trunk lid opener 51
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6 Fuel filler door opener 52
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7 Hood lock release lever 50
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8 Parking brake 135
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9 Windshield wiper and washer switch 20
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10 Cruise control switch 144
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11 Traction control system off switch
34
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12 Emergency flasher switch 25
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13 Clock 39
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14 Car audio 111
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15 Automatic air conditioning controls 103
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16 Ashtray 40
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17 Automatic transmission selector lever 137
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18 Seat heater switches 25
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19 Electronic modulated suspension
control switch 146 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 Glovebox/CD automatic changer 41/122
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COMFORT ADJUSTMENT
78
16E127
Do not attach a cup holder or any other device on or around the door.
When the side airbag inflates, the cup holder or any other device will
be thrown with great force, or the side airbag may not activate
correctly, resulting in death or serious injury. Likewise, the driver
and front passenger should not hold things in their arms or on their
knees.
 Do not use accessories for the seats which cover the parts where the
side airbags should inflate. Such accessories may prevent the side
airbags from activating correctly, causing death or serious injury.
 Do not modify or remove any wiring. Do not modify, remove, strike
or open any components, such as the steering wheel column cover,
front passenger airbag cover, front seats, airbag sensor assembly or
seat belt assemblies. Doing any of these may cause sudden SRS
operation or disable the system, which could result in death or
serious injury.
 Do not modify or replace the seats or surface of the front seats with
side airbags. Such changes may disable the system or cause the side
airbags to inflate, resulting in death or serious injury. Consult your
Lexus dealer.
Failure to follow these instructions can result in death or serious
injuries.
NOTICE
Do not perform any of the following changes without consulting your
Lexus dealer. Such changes can interfere with proper operation of the
SRS in some cases.
 Installation of electronic items such as a mobile two±way radio,
cassette tape player or compact disc player.
 Modification of the suspension system.
 Modification of the front end structure and side structure of the
passenger compartment.
 Attachment of a grille guard (bull bar, kangaroo bar, etc.), snow plow,
winches or any other equipment to the front end.
 Repairs made on or near the front fenders, front end structure,
console, steering column, steering wheel, dashboard near the front
passenger airbag, front seats or seat belt assembly.

SECTION 3 ± 1
131
STARTING AND DRIVING
Three±way catalytic converter Warm up three±way catalytic converter132
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Engine exhaust caution 133
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Before starting the engine 134
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Ignition switch with steering lock 134
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Parking brake 135
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How to start the engine 136
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Automatic transmission 137
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Cruise control 144
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Electronic modulated suspension 146
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Traction control system 147
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Brake system 148
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Brake pad wear limit indicators 150
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Types of tires 150
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STARTING AND DRIVING
146
Resetting to a slower speed
Press the control lever downward in the ºSET/COASTº direction and hold \
it.
Release the lever when the desired speed is attained. While the lever is held
downward, the vehicle speed will gradually decrease.
When the difference between the actual vehicle speed and the set speed is less
than 5 km/h (3 mph), the set speed can be lowered 1.6 km/h (1 mph) e\
ach time
by pressing the control lever downward in the ºSET/COASTº direction
quickly.
However, a quicker way to reset is to depress the brake pedal and then press
the control lever downward in the ºSET/COASTº direction.
Even if you turn off the overdrive switch with the cruise control on, engine
braking will not be applied because the cruise control is not cancelled. To
decrease the vehicle speed, reset to a slower speed with the cruise control lever\
or depress the brake pedal. If you use the brake pedal, cruise control \
is
cancelled.
Resuming the preset speed
If the preset speed is cancelled by pulling the control lever or by depr\
essing
the brake pedal, pushing the lever up in the ºRES/ACCº direction will\
restore
the speed set prior to cancellation. However, once the vehicle speed falls
below about 40 km/h (25 mph), the preset speed will not be resumed.
Cruise control failure warning
If the ºCRUISEº indicator light in the instrument cluster flashes fi\
ve times and
then goes out when using the cruise control, it means that there is trouble in
the cruise control system. Contact your Lexus dealer.
ELECTRONIC MODULATED SUSPENSION
This electronic modulated suspension adjusts the damping effect on the
shock absorbers with the control switch. Select one of the 4 modes which
is suited to the driving conditions with the control switch to provide good
riding comfort and stability.
31E012±2
1 For sporty type driving such as on winding mountain roads and high
speed driving
2For moderate high speed driving
3For ordinary driving such as in the city traffic
4For driving on a bumpy road

DRIVING TIPS
156
Brakes and safety chains
Lexus recommends trailers with brakes that conform to any
applicable federal and state/provincial regulations.
 A safety chain must always be used between the towing vehicle and the
trailer. Leave sufficient slack in the chain for turns. The chain should
cross under the trailer tongue to prevent the tongue from dropping to
the ground in case it becomes damaged or separated. For correct
safety chain procedures, follow the hitch or trailer manufacturer's
recommendations.
CAUTION
 If the total trailer weight exceeds 450 kg (1000 lb.), trailer
brakes are required.
 Never tap into your vehicle's hydraulic system as it will
lower its braking effectiveness.
 Never tow a trailer without using a safety chain securely
attached to both the trailer and the vehicle. If damage
occurs to the coupling unit or hitch ball, there is possible
danger of the trailer wandering over into another lane.
Tires
Ensure that your vehicle's tires are properly inflated. Adjust the tire
pressure to the recommended cold tire pressure indicated below:
Tire pressure, kPa (kgf/cm
2 or bar, psi)
Front 220 (2.2, 32)
Rear 220 (2.2, 32)
 The trailer tires should be inflated to the pressure recommended by the
trailer manufacturer in respect to the total trailer weight.
Trailer lights
Trailer lights must comply with federal, state/provincial and local
regulations. See your local recreational vehicle dealer or rental agency for
the correct type of wiring and relays for your trailer. Check for correct
operation of the turn signals and stop lights e ach time you hitch up. Direct
splicing may damage your vehicle's electrical system and cause a
malfunction of your lights.
Break±in schedule
 Lexus recommends that you do not tow a trailer with a new vehicle or a
vehicle with any new power train component (engine, transmission,
differential, wheel bearing, etc.) for the first 800 km (500 miles) of driving.
Maintenance
If you tow a trailer, your vehicle will require more frequent maintenance
due to the additional load. For this information, please refer to the
scheduled maintenance information in the ºOwner's Manual Supplement/
Maintenance Scheduleº.
 Retighten all fixing bolts of the towing ball and bracket after
approximately 1000 km (600 miles) of trailer driving.
Pre±towing safety check
Check that your vehicle remains level when a loaded or unloaded trailer is
hitched. Do not drive if the vehicle has an abnormal nose±up or
nose±down condition, and check for improper tongue load, overload, worn
suspension or other possible causes.
 Make sure the trailer cargo is securely loaded so that it cannot shift.
 Check that your rear view mirrors conform to any federal, state/provincial
or local regulation. If they do not, install required rear view mirrors\
appropriate for towing purposes.

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.

SECTION 6 ± 3
202
SERVICE PROCEDURES AND SPECIFICATIONS
Chassis
Specifications203
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Checking brake fluid 205
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Checking power steering fluid 206
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Checking tire pressure 207
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Rotating tires 208
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Checking and replacing tires 208
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Installing snow tires and chains 210
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Replacing wheels 212
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Aluminum wheel precautions 212
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Suspension and chassis 212
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CHASSIS
212
REPLACING WHEELS
When to replace your wheels
If you have wheel damage such as bending, cracks or heavy corrosion, the
wheel should be replaced.
If you fail to replace damaged wheels, a tire may slip off a wheel or they may
cause loss of handling control.
Replacement with used wheels is not recommended as they may have been
subjected to rough treatment or high mileage and could fail without warning.
Also, bent wheels which have been straightened may have hidden structural
damage and therefore should not be used. Never use an inner tube in a leaking
wheel which is designed for a tubeless tire.
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.
ALUMINUM WHEEL PRECAUTIONS
 After driving your vehicle the first 1600 km (1000 miles), check that the
wheel nuts are tight.
 If you have rotated, repaired, or changed your tires, check that the whe\
el
nuts are still tight after driving 1600 km (1000 miles).
 When using tire chains, be careful not to damage the aluminum wheels.
 Use only the 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.
SUSPENSION AND CHASSIS
CAUTION
Do not modify the suspension/chassis with lift kits, spacers,
springs, etc. It can cause dangerous handling characteristics,
resulting in loss of control.