passenger LEXUS LS430 2005 Repair Manual

AIR CONDITIONING
253
21L058a
When you push the swing button with no passenger in the
front seat and the “DUAL” button ON (with the indicator
on):
The vanes directly aimed at the driver and rear passenger will
swing wider as the room temperature nears the desired
temperature. The swinging angle will also change from narrow
to wide depending on the room temperature.
When you push the swing button with no passenger on
the front seat and “DUAL” button OFF (with the indicator
off):
The vanes directly aimed at the driver will swing wider as the
room temperature nears the desired temperature. The
swinging angle will also change from narrow to wide
depending on the room temperature.
Side vents
21L065
The side vents may be opened or closed as shown.

AIR CONDITIONING
255
These
are the controls added to the front air conditioning when
your vehicle is equipped with a rear air conditioning. The
controls for the rear passengers and for the front passengers
both work the same, so operation can be made with the
controls on either panel.
(a) Controls and Functions
This rear air conditioning is equipped with dustproof and
deodorant filter with photocatalyst. When light in the
xenon tube (ultraviolet rays) hits the filter, odious
ingredients adsorbed in the filter are oxidized and
decomposed to deliver clean air in the interior.
REAR AIR CONDITIONING ONOFF
Push the “AUTO” button to turn the air conditioning on,
and push the “OFF” button to turn it off.
AIR FLOW CONTROL
The mode changes every time the “LO HI A/C” button is
pushed.
AUTO mode − Turns the fan operation to automatic.
LO speed mode − Turns the fan at low speed.
HI speed mode − Turns the fan at high speed.
(b) Rear Cooling
1. Turn the front air conditioning on. The rear cooler will not
turn on if the front air conditioning is off.
2. Turn the rear air conditioning on. The fan speed and rear
cooler are adjusted automatically.
3. Use either of the “LO HI A/C” buttons to adjust the desired
fan speed and the rear cooler. Each indicator light shows
which mode is now selected.
(c) Air Purifier
The air purifier operates whenever the rear air conditioning or
the rear fan operation is on, regardless of front air conditioning
activation.

STARTING AND DRIVING
372
Tire pressure warning system reset switch
31L568b
The tire pressure warning system needs to be initialized
after tires or wheels are replaced or rotated.
To initialize the system, perform the following:
1. Park the vehicle at a safe place with the parking brake
applied and turn the ignition switch to “LOCK”.
2. Adjust the pressure of all the installed tires to the specified
level. (See “Tires and wheels” on pages 463 through 465.)
3. Turn the ignition switch to “ON”.
If the low tire pressure warning message “Low Tire” appears
in the multi−information display, push the reset switch for a few
seconds and make sure the warning message goes off.
4. With the vehicle stopped, push and hold the reset switch
until “Pressure Initial” appears in the multi−information display.
W266
Initialization is completed after driving at the speeds of 30
km/h (19 mph) or over for more than one hour. If the
following driving conditions are satisfied, initialization
will be completed in about one hour.
 The vehicle speeds is between 50 km/h (31 mph) and
100 km/h (62 mph).
 The roads are dry, smooth and straight.
 The number of passengers is one or two (including the
driver).
If you make a mistake in the middle of initialization, perform the
operation from the beginning again.
Do not push the reset switch without adjusting the tire inflation
pressure to the specified level. Otherwise, the low tire
pressure warning may not turn on even if the tire inflation
pressure is low, or it may turn on when the tire inflation
pressure is actually normal.
If you push the reset switch while driving, initialization is not
performed.
If “Pressure Initial”does not appear when the reset switch is
held down, the system may be malfunctioning. Have your
vehicle checked by your Lexus dealer as soon as possible.

STARTING AND DRIVING
378
Precaution for precollision safety system
It should be noted that the pre−collision sensor may detect the
following as the objects with which your vehicle might collide,
and the pre −collision safety may operate, even though there
is no possibility of collision.
 When traveling through a curve, there is an object on the
edge of the road.
 When traveling through a curve, another vehicle is passing
from the opposite direction.
 When traveling across a narrow iron bridge.
 When there is a metallic object on the road.
 When there is a steel plate on the road at a construction site.
 When there is a bump on the road.
 When waiting to turn to the left in an intersection, and
another vehicle is passing from the opposite direction.
 If your vehicle approaches another vehicle ahead very
quickly.CAUTION
Do not rely solely on the precollision safety system
to avoid accidents. Your safe and attentive driving
practices are still the best way to avoid accidents and
you are always responsible for the operation of the
vehicle and the safety of your passengers. When
driving, always pay attention to the surrounding
conditions and the course you are driving.
 The precollision sensor’s collision detection
performance is limited. The sensor is able to detect
a forward object within 10 degrees on either left or
right side. If it is out of the range, or if there is no or
weak millimeter wave reflection, the sensor could not
detect the object and the system does not work
properly.
 Even if the precollision safety is operative in an
unavoidable collision, unless the seat belts are worn
and the brake pedal is depressed, the precollision
seat belts and precollision brake assist system will
not work.

DRIVING TIPS
386
TRAILER TOWING
Your vehicle is designed primarily as a passenger−carrying
vehicle. Towing a trailer w ill have an adverse effect on
handling, performance, braking, durability and driving
economy (fuel consumption, etc.). Your safety and satisfaction
depend on the proper use of correct equipment and cautious
driving habits. For your safety and the safety of others, you
must not overload your vehicle or trailer. Lexus warranties do
not apply to damage or malfunction caused by towing a trailer
for commercial purposes. Ask your local Lexus dealer for
further details before towing.
NOTICE
When towing a trailer, be sure to consult your Lexus
dealer for further information on additional
requirements such as a towing kit, etc.
Weight limits
Before towing, make sure the total trailer weight, gross
vehicle weight, gross axle weight and trailer tongue load
are all within the limits.
The total trailer weight and tongue load can be measured with
platform scales found at a highway weighing station, building
supply company, trucking company, junk yard, etc.
61L066
 Certification label
CAUTION
 The total trailer weight (trailer weight plus its cargo
load) must not exceed 907 kg (2000 lb.). Exceeding
this weight is dangerous.

Tongue load
Total trailer weight x 100 = 9 to 11%
DRIVING TIPS
387

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.
32L017
 1
Total trailer weight 2Tongue 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
395
NOTICE
Do not load the vehicle beyond the vehicle
capacity weight specified on the tire and loading
information label affixed on the center pillar on the
driver side.
Capacity and distribution
Cargo capacity depends on the total weight of the
occupants.
(Cargo capacity) = (Total load capacity) – (Total weight
of occupants)
Steps for determining correct load limit
1. Locate the statement “The combined weight of
occupants and cargo should never exceed XXX pounds”
on your vehicle’s placard.
2. Determine the combined weight of the driver and
passengers that will be riding in your vehicle.
3. Subtract the combined weight of the driver and
passengers from XXX kilograms or XXX pounds.
4. The resulting figure equals the available amount of
cargo and luggage load capacity. For example, if the
“XXX” amount equals 1400 lbs. and there will be five 150
lb. passengers in your vehicle, the amount of available
cargo and luggage load capacity is 650 lbs. 1400 – 750
(5 x 150) = 650 lbs.
5. Determine the combined weight of luggage and cargo
being loaded on the vehicle. That weight may not safely
exceed the available cargo and luggage load capacity
calculated in Step 4.

DRIVING TIPS
396
6. If your vehicle will be towing a trailer, load from your
trailer will be transferred to your vehicle. Consult this
manual to determine how this reduces the available
cargo and luggage load capacity of your vehicle.
For details about trailer towing, see page 386.Example on your vehicle
32SA03
 1Cargo capacity
2Total load capacity
In case that 2 people with the combined weight of 166 kg
(366 lb.) are riding in your vehicle with the total load
capacity of 410 kg (900 lb.), the available amount of
cargo and luggage load capacity will be as follows:
410 kg – 166 kg = 244 kg.
(900 lb. – 366 lb. = 534 lb.)
From this condition, if 3 more passengers with the
combined weight of 176 kg (388 lb.) get on, the available
cargo and luggage load will be reduced as follows:
244 kg – 176 kg = 68 kg.
(534 lb. – 388 lb. = 146 lb.)

CHASSIS
469
You should check the tire inflation pressures every two
weeks, or at least once a month. And do not forget the
spare! The pressure for the spare tire should be the
same as that for the standard tire. (See pages 463
through 465.)
The following instructions for checking tire inflation
pressure should be observed:
The pressure should be checked only when the
tires are cold. If your vehicle has been parked for at
least 3 hours and has not been driven for more than
1.5 km or 1 mile since, you will get an accurate cold
tire inflation pressure reading.
 Always use a tire pressure gauge. The appearance
of the tire can be misleading. Besides, tire inflation
pressures that are even just a few pounds off can
degrade ride and handling.
 Do not bleed or reduce tire inflation pressure after
driving. It is normal for the tire inflation pressure to
be higher after driving.
 Never exceed the vehicle capacity weight.
Passengers and luggage weight should be located so
that the vehicle is balanced. Inspection and adjustment procedure
63L024
 1Tire valve
2Tire pressure gauge
1. Remove the tire valve cap.
2. Press the tip of the tire pressure gauge to the tire
valve.
3. Read the pressure using the graduations of the
gauge.
4. In case the tire inflation pressure is not within the
prescribed range, insert the compressed air from the
valve. In case of app lying too much air, press the center
of the valve and release the air to adjust.
5. After completing the tire inflation pressure
measurement and adjustment, apply soapy water to the
valve and check for leakage.

CHASSIS
473
DOT and Tire Identification Number (TIN)
63SA11a
The illustration indicates typical DOT and Tire
Identification Number (TIN)
1“DOT” symbol
2Tire Identification Number (TIN)
3Tire manufacturer’s identification mark
4Tire size code
5Manufacturer’s optional tire type code
6Manufacturing week
7Manufacturing year
The “DOT” symbol certifies that the tire conforms to
applicable Federal Motor Vehicle Safety Standards.
Tire size
63L022a
 The illustration indicates typical tire size.
1Tire use (P=Passenger car, T=Temporary use)
2Section width (in millimeters)
3Aspect ratio (tire height to section width)
4Tire construction code
(R=Radial, D=Diagonal)
5Wheel diameter (in inches)
6Load index (2 digits or 3 digits)
7Speed symbol (alphabet with one letter)