1999 Lexus ES300 Owner's Manuals (in English)

DRIVING TIPS
301
Trailer hitch assemblies have different weight
capacities established by the hitch manufacturer.
Even though the vehicle may be physically capable of
towing a higher weight, the operator must determine
the maximum weight rating of the particular hitch
assembly and never exceed the maximum weight
rating specified for the trailer hitch. Exceeding the
maximum weight rating set by the trailer hitch
manufacturer can cause an accident resulting in
serious personal injuries.
 The gross vehicle weight must not exceed the Gross
Vehicle Weight Rating (GVWR) indicated on the
Certification Label. The gross vehicle weight is the
sum weight of the unloaded vehicle, driver,
passengers, luggage, hitch and trailer tongue load.
It also includes the weight of any special equipment
installed on your vehicle.
 The load on either the front or rear axle resulting from
distribution of the gross vehicle weight on both axles
must not exceed the Gross Axle Weight Rating
(GAWR) listed on the Certification Label.

Tongue load
Total trailer weight x 100 = 9 to 11%
DRIVING TIPS
302
32L002

Total trailer weight
Tongue load

The trailer cargo load should be distributed so
that the tongue load is 9 to 11 % of the total
trailer weight, not exceeding the maximum of
90 kg (200 lb.).
 Never load the trailer with more weight in the
back than in the front. About 60 % of the trailer
load should be in the front half of the trailer and
the remaining 40 % in the rear.

DRIVING TIPS
303
Hitches
If you wish to install a trailer hitch, your Lexus dealer
should be consulted.
 Use only a hitch which is recommended by Lexus
dealer and conforms to the total trailer weight
requirement.
 Follow the directions supplied by the hitch
manufacturer. Lubricate the hitch ball with a light coat
of grease.
 Lexus recommends removing the trailer hitch
whenever you are not towing a trailer to reduce the
possibility of additional damage caused by the hitch
if your vehicle is struck from behind. After removing
the hitch, seal any mounting holes in the vehicle body
to prevent entry of pollutants such as exhaust fumes,
dirt, water, etc.
NOTICE
Install the trailer hitch using only the position
recommended by your Lexus dealer. Do notinstall the trailer hitch on the bumper; this may
cause body damage.
Do not use axle±mounted hitches as they can cause damage to the axle housing, wheelbearings, wheels or tires.

DRIVING TIPS
304
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.

DRIVING TIPS
305
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 each 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.

DRIVING TIPS
306
Trailer towing tips
When towing a trailer, your vehicle will handle
differently than when not towing. The three main
causes of vehicle±trailer accidents are driver error,
excessive speed and improper trailer loading. Keep
these in mind when towing: 
Before starting out, check the operation of the lights
and all vehicle±trailer connections. After driving a
short distance, stop and recheck the lights and
connections. Practice turning, stopping and backing
with a trailer in an area away from traffic until you learn
the feel.
 Backing with a trailer is difficult and requires practice.
Grip the bottom of the steering wheel and move your
hand to the left to move the trailer to the left. Move
your hand to the right to move the trailer to the right.
(This procedure is generally opposite to that when
backing without a trailer.) Also, just turn the steering
wheel a little at a time, avoiding sharp or prolonged
turning. Have someone guide you when backing to
reduce the risk of an accident.
 Because stopping distance may be increased,
vehicle±to±vehicle distance should be increased
when towing a trailer. For each 16 km/h (10 mph) of
speed, allow at least one vehicle and trailer length
between you and the vehicle ahead. Avoid sudden
braking as you may skid, resulting in jackknifing and
loss of control. This is especially true on wet or
slippery surfaces.
 Avoid jerky starts or sudden acceleration.
 Avoid jerky steering and sharp turns. The trailer could
hit your vehicle in a tight turn. Slow down before
making a turn to avoid the need of sudden braking.
 Remember that when making a turn, the trailer

DRIVING TIPS
307
wheels will be closer than the vehicle wheels to the
inside of the turn. Therefore, compensate for this by
making a larger than normal turning radius with your
vehicle.

Crosswinds and rough roads will adversely affect
handling of your vehicle and trailer, causing sway.
Pay attention to the rear from time to time to prepare
yourself for being passed by large trucks or buses,
which may cause your vehicle and trailer to sway. If
swaying happens, firmly grip the steering wheel and
reduce speed immediately but gradually. Never
increase speed. If it is necessary to reduce speed,
brake slowly. Steer straight ahead. If you make no
extreme correction with the steering or brakes, your
vehicle and trailer will stabilize.
 Be careful when passing other vehicles. Passing
requires considerable distance. After passing a
vehicle, do not forget the l ength of your trailer and be
sure you have plenty of room before changing lanes.
 In order to maintain efficient engine braking and
electrical charging performance, do not use
overdrive.
 Because of the added load of the trailer, your vehicle's
engine may overheat on hot days (at temperatures
over 30C [85F]) when going up a long or steep
grade with a trailer. If the engine coolant temperature
gauge indicates overheating, immediately turn off the
air conditioning (if in use), pull your vehicle off the
road and stop in a safe spot. See ºIf your vehicle
overheatsº on page 319 of this manual.
 Always place wheel blocks under both the vehicle
and trailer wheels when parking. Apply the parking
brake firmly. Put the transmission in ºPº. Avoid

DRIVING TIPS
308parking on a slope with a trailer, but if it cannot be
avoided, do so only after performing the following:
1. Apply the brakes and keep them applied.
2. Have someone place wheel blocks under both the
vehicle and trailer wheels.
3. When the wheel blocks are in place, release your
brakes slowly until the blocks absorb the load.
4. Apply the parking brake firmly.
5. Shift into ºPº and turn off the engine.
When restarting out after parking on a slope:
1. With
the transmission in ºPº position, start the engine.
Be sure to keep the brake pedal depressed.
2. Shift into the º2º, ºLº or ºRº position.
3. Release the parking brake and brake pedal and
slowly pull or back away from the wheel blocks. Stop
and apply your brakes.
4. Have someone retrieve the blocks.
CAUTION
 Do not exceed 72 km/h (45 mph) or the posted towing
speed limit, whichever is lower. Because instability
(swaying) of a towing vehicle±trailer combination
usually increases as the speed increases, exceeding
72 km/h (45 mph) may cause loss of control.