2006 Lexus GX470 brake

MAINTENANCE
488
DOES YOUR VEHICLE NEEDREPAIRING?
Be on the alert for changes in performance and sounds, and
visual tip −offs 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 as 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.

61PY009
INTRODUCTION
494
ENGINE COMPARTMENT OVERVIEW
1Engine oil level
dipstick
2Engine oil filler cap
3Brake fluid reservoir
4Fuse box
5Battery
6Condenser
7Electric cooling fan
8Radiator
9Engine coolant
reservoir
10Washer fluid tank
11Power steering fluid
reservoir

INTRODUCTION
499
Checking brake fluid
Parts (if level is low):
FMVSS No. 116 DOT 3 or SAE J1703 brake fluid
Tools:
 Rag or paper towel
 Funnel (only for adding fluid)
Checking power steering fluid
Parts (if level is low):
Automatic transmission fluid DEXRON
II or III
Tools:
 Rag or paper towel
 Funnel (only for adding fluid)
Checking battery condition
Tools:
Warm water
 Baking soda
 Grease
 Conventional wrench (for terminal clamp bolts)
Checking and replacing the blade type fuses
Parts (if replacement is necessary):
Fuse with same amperage rating as original
Checking the cartridge type fuses
Parts (if replacement is necessary):
Genuine Lexus fuse or equivalent with same amperage
rating as original
Adding washer fluid
Parts:
Water
 Washer fluid containing antifreeze (for winter use)
Tools:
 Funnel

SECTION 6 – 3
517
SERVICE PROCEDURES AND
SPECIFICATIONS
Chassis
Specifications518
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
Checking brake fluid 521
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
Checking power steering fluid 522
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking tire inflation pressure 523
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire information 527
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
Types of tires 536
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . .
Rotating tires 537
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . .
Checking and replacing tires 538
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing snow tires and chains 540
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing wheels 543
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . .
Aluminum wheel precautions 544
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension and chassis 544
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHASSIS
519
— AUTOMATIC TRANSMISSION
Fluid capacity Drain and refill
Up to 3.0 L (3.2 qt., 2.6 Imp. qt.)
Fluid typeToyota Genuine ATF WS*
*: Change automatic transmission fluid only as necessary.
Generally, it is necessary to change automatic transmission
fluid only if your vehicle is driven under one of the Special
Operating Conditions listed in your “Owner’s Manual
Supplement/Scheduled Maintenance”. When changing the
automatic transmission fluid, use only “Toyota Genuine ATF
WS” (ATF JWS3324 or NWS9638) to aid in assuring optimum
transmission performance.NOTICE
Using automatic transmission fluid other than “Toyota
Genuine ATF WS” may cause deterioration in shift
quality, locking up of your transmission accompanied
by vibration, and ultimately damage the automatic
transmission of your vehicle.
Please contact your Lexus dealer for further details.
— BRAKES
Pedal clearance
52 mm (2.0 in.) Min. *1
Pedal free play1 — 6 mm (0.04 — 0.24 in.)
Brake pad wear limit1.0 mm (0.04 in.)
Parking brake lining wear limit1.0 mm (0.04 in.)
Parking brake adjustment5 — 7 clicks *2
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
*1: Minimum pedal clearance when depressed with the force of 490 N (50 kgf,\
110 lbf) with the engine running
*2: Parking brake adjustment when pulled with the force of 196 N (20 kgf, 4\
4 lbf)

CHASSIS
521
CHECKING BRAKE FLUID
To check the fluid level, simply look at the seethrough
reservoir. The level should be between the “MAX” and
“MIN” lines on the tank.
It is normal for the brake fluid level to go down slightly as the
brake pads wear or when the fluid level in the accumulator is
high.
If the reservoir needs frequent refilling, it may indicate a serious
mechanical problem.
If the level is low, add FMVSS No.116 DOT 3 or SAE J1703
brake fluid to the brake reservoir. Refilling brake fluid:
1. Turn the ignition switch off.
2. Depress
the brake pedal more than 20 times (until the brake
pedal resistance decreases and pedal travel increases).
3. Remove the reservoir cap by hand. Add brake fluid up to the
“MAX” line.
If you do not follow the procedure above, the reservoir may
overflow.
Use only newly opened brake fluid. Once opened, brake fluid
absorbs moisture from the air, and excess moisture can cause
a dangerous loss of braking efficiency.
CAUTION
Take care when filling the reservoir because brake fluid
can harm your hands or eyes. If fluid gets on your hands
or in your eyes, flush the affected area with clean water
immediately. If you still feel uncomfortable with your
hands or eyes, go to the doctor.
NOTICE
If you spill some of the fluid, be sure to wipe it off to
prevent it from damaging the parts or paintwork.

CHASSIS
533
Glossary of tire terminology
Tire related termMeaning
Accessory weightthe combined weight (in excess of those standard items which may be rep\
laced)
of automatic transmission, power steering, power brakes, power windows, \
power
seats, radio, and heater, to the extent that these items are available as
factory−installed equipment (whether installed or not)
Cold tire inflation
pressuretire inflation pressure when the vehicle has been parked for at least 3 \
hours or
more, or it has not been driven more than 1.5 km or 1 mile under that co\
ndition
Curb weightthe weight of a motor vehicle with standard equipment including the maxi\
mum
capacity of fuel, oil, and coolant, and, if so equipped, air conditionin\
g and
additional weight optional engine
Intended outboard
sidewall(a) the sidewall that contains a whitewall, bears white lettering or bearsmanufacturer, brand, and/or model name molding that is higher or deeper
than the same molding on the other sidewall of the tire, or
(b) the outward facing sidewall of an asymmetrical tire that has a particula\
r side that must always face outward when mounted on a vehicle
Maximum inflation
pressurethe maximum cold inflation pressure to which a tire may be inflated and \
it is
shown on the sidewall of the tire
Maximum loaded
vehicle weightthe sum of —
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight

CHASSIS
534
Tire related termMeaning
Normal occupant
weight68 kg (150 lb.) times the number of occupants specified in the second \
column of
Table 1 that follows
Occupant distributiondistribution of occupants in a vehicle as specified in the third column \
of Table 1
that follows
Production options
weightthe combined weight of those installed regular production options weighi\
ng over
2.3 kg (5 lb.) in excess of those standard items which they replace, n\
ot
previously considered in curb weight or accessory weight, including heav\
y duty
brakes, ride levelers, roof rack, heavy duty battery, and special trim
Recommended
inflation pressurecold tire inflation pressure recommended by a manufacturer
Rima metal support for a tire or a tire and tube assembly upon which the ti\
re beads
are seated
Rim diameter (Wheel
diameter)nominal diameter of the bead seat
Rim size designationrim diameter and width
Rim type designationthe industry of manufacturer’s designation for a rim by style or code
Rim widthnominal distance between rim flanges