2006 LEXUS RX330 inflation pressure

IMPORTANT INFORMATION ABOUT YOUR LEXUS
vii
Tires and loading on your Lexus
Underinflated or overinflated tire pressure and the
excess load may result in the deterioration of steering
ability and braking ability, leading to an accident.
Check the tire inflation pressure periodically and be
sure to keep the load limits given in this Owner’s
Manual. For details about tire inflation pressure and
load limits, see pages 570 and 489.
Scrapping of your Lexus
The SRS airbag and seat belt pretensioner devices in your
Lexus contain explosive chemicals. If the vehicle is scrapped
with the airbags and seat belt pretensioners left as they are,
this may cause an accident such as fire. Be sure to have the
system of the SRS airbag and seat belt pretensioner removed
and disposed of by a qualified service shop or by your Lexus
dealer before you scrap your vehicle.
Onpavement and offroad driving tips
This vehicle belongs to the utility vehicle class. Utility vehicles
have a significantly higher rollover rate than other types of
vehicles. This vehicle will handle and maneuver differently
from an ordinary passenger car because it is designed for
off−road use also. In addition, this vehicle has a higher ground
clearance and center of gravity than that of an ordinary
passenger car. This vehicle design feature causes this type of
vehicle to be more likely to rollover. Failure to operate this
vehicle correctly may result in loss of control, accidents or
vehicle rollover causing death or serious injury. Be sure to read
“Off −road vehicle precautions” on page 468 and “Off −road
driving precautions” on page 472.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
75
IF THIS INDICATOR OR
BUZZER COMES ON...
DO THIS.
(k)Replace bulb.
(l)Take vehicle to Lexus
dealer.
(m)Stop and check.
(n)Add washer fluid.
(o)Low fuel level
warning lightFill up tank.
(p)Take vehicle to Lexus
dealer.
IF THIS INDICATOR ORBUZZER COMES ON...DO THIS.
(q)
Adjust tire inflation
pressure.
If light remains,
contact Lexus dealer.
(r)Dynamic laser cruise
control master warning
light
Check condition
according to warning
code. If system
malfunctions, contact
Lexus dealer.
(s)Key reminder buzzerRemove key.
(t)Open moon roof
reminder buzzerClose moon roof.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
84
(o) Low Fuel Level Warning Light
This light comes on when the fuel level in the tank becomes
nearly empty. Fill the tank as soon as possible.
On inclines or curves, due to the movement of fuel in the tank,
the low fuel level warning light may come on earlier than usual.
(p) Automatic Headlight Leveling System Warning Light (vehicles with discharge headlight only)
This light warns that when there is a problem somewhere in the
automatic headlight leveling system.
The light will come on when the ignition key is turned to the
“ON” position, and will go off after a few seconds.
If it comes on while driving, have your vehicle checked by your
Lexus dealer.
(q) Low Tire Pressure Warning Light
This light warns that tire inflation pressure is critically low. The
light comes on when the ignition key is turned to the “ON”
position. It goes off after a few seconds. This indicates that the
low tire pressure warning system is functioning properly. If the light comes on while driving, adjust tire inflation pressure
to the specified level. (See “Specifications” on page 564.)
Once the
ignition switch is turned off, the warning light also go
off. If the light comes on again when the vehicle is started after
adjusting the tire inflation pressure to the specified level, have
the low tire pressure warning system checked at your Lexus
dealer.
If the light blinks once every second, the low tire pressure
warning system may be malfunctioning. Have the system
checked at your Lexus dealer.
If the light blinks twice every second, the low tire pressure
warning system needs to be initialized. For details, see “Tire
pressure warning system” on page 462.
(r) Dynamic Laser Cruise Control Master Warning Light
This light warns that there is a problem somewhere in the
dynamic laser cruise control system.
The light will come on when the ignition key is turned to the
“ON” position and will go off after a few seconds.
When the light comes on, the alarm sounds and the warning
code will appear on the display. At this time, the dynamic laser
cruise control is cancelled. For details, see “Dynamic laser
cruise control” on page 416.

STARTING AND DRIVING
462
Brake assist system
If you slam the brakes on such as in an emergency or
apply the brakes more firmly than usual such as when
descending the hill with the designated number of
occupants in the vehicle, the brake assist system
provides more powerful braking.
If you slam the brakes on or apply the brakes more firmly, more
powerful braking will be applied. At this time, you may hear a
sound in the engine compartment and feel the vibrations of the
brake pedal. This does not indicate a malfunction.
The brake assist system becomes operative after the vehicle
has accelerated to a speed in excess of approximately 10 km/h
(6 mph). It stops operating when the vehicle decelerates to a
speed below approximately 5 km/h (3 mph).
For an explanation of this system’s warning light, see “ABS
warning light” on page 81 or 460.
TIRE PRESSURE WARNING SYSTEM
The tire pressure warning system is designed to provide
warning when tire inflation pressure is critically low while
the vehicle is moving. The low tire pressure warning light
comes on to inform you that such low tire pressure may
hamper driving.
This system is not designed to operate when the vehicle is
stopped. Therefore, check the tire inflation pressure regularly.
The recommended cold tire inflation pressure, tire size and the
vehicle capacity weight are on the tire and loading information
label. (For instructions, see “Checking tire inflation pressure”
on page 570.)
Installed tires should be of the specified size. They should be
of the same size and construction. If tires other than the
specified size are used, or if tires of different sizes or
constructions are mixed, the tire pressure warning system will
not function properly.

STARTING AND DRIVING
463
Low tire pressure warning light
This light comes on when the ignition key is turned to the “ON”
position. It goes off after a few seconds. This indicates that the
tire pressure warning system is functioning properly.
If the low tire pressure warning light comes on or blinks
while driving, do the following.
 If the warning light comes on: The tire pressure is critically
low. Adjust the tire inflation pressure to the specified level
as soon as possible. (See “Tires and wheels” on page 566.)
Once the ignition switch is turned off, the warning light also
goes off. If the light comes on again when the vehicle is started
after adjusting tire inflation pressure to the specified level, have
the system checked at your Lexus dealer. If you have a flat tire, replace it with the spare tire. For details,
see “If you have a flat tire” on page 500.

If the warning light blinks once every second: The low
tire pressure warning system may be malfunctioning.
Contact your Lexus dealer.
 If the warning light blinks twice every second: The low
tire pressure warning system needs to be initialized. Reset
the system with the tire pressure warning system reset
switch. (To reset the system, see “Tire pressure warning
system reset switch”.)
The tire pressure warning system does not function
properly under certain circumstances. In the following
cases, the low tire pressure warning light may not come
on even if the tire inflation pressure is low, or it may come
on when the tire inflation pressure is actually normal.
 A compact spare tire, snow tires, or tire chains are used.
 The tire inflation pressure is excessively higher than
specified, or tire inflation pressure suddenly drops due to
bursting or other causes.
 The vehicle is driven on a slippery road surface such as
rough or frozen roads.
 The vehicle speed is less than 30 km/h (19 mph) or more
than 100 km/h (62 mph), and the driving duration is less than
5 minutes.
 The tires differ in tread pattern or manufacturer.
 The tires are not the specified size.

STARTING AND DRIVING
464
The tread wear is very different among the installed tires.
 Rapid acceleration/deceleration or sharp turns is continue.
 Towing a trailer.
 The loading is over the limit or imbalanced.
 Initialization was not performed correctly after replacing or
rotating tires or wheels.
 The outside temperature is below 0 C (32F) or above
40 C (104 F).
CAUTION
When the tire pressure warning light comes on, observe
the following instructions:
 Adjust the tire inflation pressure to the specified level
as soon as possible.
 Avoid abrupt steering wheel maneuvering and
braking when the tire pressure warning light comes
on. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes, causing
death or serious injury.
Tire pressure warning system reset switch
The tire pressure warning system need to be initialized in
the following conditions:
When the low tire pressure warning light blinks twice
every second
 After replacing or rotating tires or wheels
When initializing the system, the present tire condition is
stored as a standard.
To initialize the system, perform the following:
1. Park the vehicle at a safe place and apply the parking brake.
Stop the engine.
2. Adjust the pressure of all the installed tires to the specified
level. (See “Tires and wheels” on page 566.)
3. Turn the ignition key to “ON”.

STARTING AND DRIVING
465
4. With the vehicle stopped, push the reset switch on the left
lower instrument panel and hold it until the low tire pressure
warning light blinks three times.
Initialization is
completed after driving at the speeds of 30 km/h
(19 mph) or over for about a few hours total, when the tire
pressure warning system detects the normal tire pressure. If
the following driving conditions are satisfied, initialization will
be completed in about one hour.
 Vehicle speed varies between 30 km/h (19 mph) and 80
km/h (50 mph)
 Normal road surface
When the warning light blinks twice every second while driving,
you may be unable to reset the system. In this case, set the
system again according to the above procedure.
Do not push the reset switch without adjusting the tire inflation
pressure to the specified level. Otherwise, the low tire
pressure warning light may not come on even if the tire
pressure is low, or it may come on when the tire inflation
pressure is actually normal.
If you push the reset switch while the vehicle is moving,
initialization is not performed.
If the low tire pressure warning light does not blink when you
push and hold the reset switch, have the low pressure warning
system checked at your Lexus dealer.
BRAKE PAD WEAR LIMIT INDICATORS
The brake pad wear limit indicators on your disc brakes
give a warning noise when the brake pads are worn to the
extent that replacement is required.
If you hear a squealing or scraping noise while driving, have the
brake pads checked and replaced by your Lexus dealer as
soon as possible. Expensive rotor damage can result if the
pads are not replaced when needed.

DRIVING TIPS
487
CAUTION
Do not exceed 72 km/h (45 mph) or the posted towing
speed limit, whichever is lower. Because instability
(swaying) of a towing vehicletrailer combination
usually increases as the speed increases, exceeding
72 km/h (45 mph) may cause loss of control.
 Slow down and downshift before descending steep
or long downhill grades. Do not make sudden
downshifts.
 Avoid holding the brake pedal down too long or too
frequently. This could cause the brakes to overheat
and result in reduced braking efficiency.
HOW TO SAVE FUEL AND MAKE
YOUR VEHICLE LAST LONGER
Improving fuel economy is easy — just take it easy. It will help
make your vehicle last longer, too. Here are some specific tips
on how to save money on both fuel and repairs:
 Keep your tires inflated at the correct pressure. Check
the pressure every two weeks, or at least once a month.
Underinflation causes tire wear and wastes fuel.
 Do not carry unneeded weight in your vehicle. Excess
weight puts a heavier load on the engine, causing greater
fuel consumption.
 Avoid lengthy warmup idling. Once the engine is
running smoothly, begin driving — but gently. Remember,
however, that on cold winter days this may take a little
longer.
 Always keep the automatic transmission selector lever
in the “D” position when engine braking is not required.
Driving with the overdrive off will reduce the fuel economy.
(For details, see “Automatic transmission (standard type)”
or “Automatic transmission (multi− mode type)” on page 389
or 398.)
 Accelerate slowly and smoothly. Avoid jackrabbit starts.
 Avoid long engine idling. If you have a long wait and you
are not in traffic, it is better to turn off the engine and start
again later.