brakes Lexus GX460 2010 Scheduled Maintenance Guide / LEXUS 2010 GX460 (OM60E69U) Owner's Manual

598
4-2. Maintenance
GX460_U.S.A. (OM60E69U)
Vehicle interior
ItemsCheck points
Accelerator pedal
• The accelerator pedal should move smoothly (without uneven pedal
effort or catching).
Automatic transmission “Park”
mechanism• When parked on a slope and the shift lever is in P, is the vehicle
securely stopped?
Brake pedal
• Does the brake pedal move smoothly?
• Does the brake pedal have appro- priate clearance from the floor?
• Does the brake pedal have the cor-
rect amount of free play?
Brakes
• The vehicle should not pull to one side when the brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel
spongy.
• The brake pedal should not get too
close to the floor when the brakes
are applied.

676
5-1. Essential information
GX460_U.S.A. (OM60E69U)
Emergency towingIf a tow truck is not available in an emergency, your vehicle may be tem-
porarily towed using a cable or ch ain secured to the emergency towing
eyelet. This should only attempted on hard surfaced roads for short dis-
tances at low speeds. 
A driver must be in the vehicle to s teer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steering and brakes must be in good condi-
tion.
Towing hook (front)
Towing hook (rear)

5
When trouble arises
679
5-1. Essential information
GX460_U.S.A. (OM60E69U)
■Before emergency towingThe “ENGINE START STOP” switch must be in the ACCESSORY mode
(engine off) or IGNITION ON mode (engine running).
Put the four-wheel drive control switch in H4. (The center differential is
unlocked.)
Put the vehicle height in the N mode and press height control switch to
turn off the rear height control air suspension.
Shift the shift lever in N.
Release the parking brake.
CAUTION
■Caution while towing
●Use extreme caution when towing the vehicle. 
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelets and the cables or chains. Always use caution for
the surroundings and other vehicles while towing.
●Do not turn the “ENGINE START STOP” switch off. 
Doing so will lock the steering wheel and prevent operation, possibly causing an
accident and result ing in death or serious injury.
●If the engine is not running, the power assi st for the brakes and steering will not
function, making steering and braking more difficult.
STEP1
STEP2
STEP3
STEP4
STEP5

5
When trouble arises
695
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the power steering system warning light comes on
The steering wheel may become extremely heavy. 
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precaution s. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If the tire is flat,
change to the spare tire and have the flat tire repaired by the nearest Lexus
dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

5
When trouble arises
707
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
(Flashes)
(If equipped)
Indicates that the radar
cruise control sensor is
dirty or covered with ice A buzzer also sounds.
Clean the sensor.
(Flashes)
(If equipped)
Indicates that the radar
cruise control system is
unable to judge vehicle-
to-vehicle distance A buzzer also sounds.If the windshield wipers
are on, turn them off or set
them to a mode other than
“A U T O ” o r h i g h s p e e d
wiper operation.
(Flashes)
(If equipped)
Indicates that your vehi-
cle is nearing the vehicle
ahead (in radar cruise
mode)
Slow the vehicle by apply-
ing the brakes.
Wa r n i n g m e s s a g eDetailsCorrection procedure

708
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
(Flashes)
(If equipped)
Indicates that there is a
high possibility of a colli-
sion, or that the pre-crash
brake function is operat-
ing
Slow the vehicle by apply-
ing the brakes.
(If equipped)
Indicates that the LDA is
suspended The camera sensor tem-
perature is higher than
the operation tempera-
ture range.
Reactivate the lane depar-
ture alert system.
(If equipped)
Alerts the driver that the
vehicle may deviate from
its lane (while the LDA
system is operating).
The lane markings flash.
Check the road condi-
tions and correct the driv-
ing path appropriately.
Wa r n i n g m e s s a g eDetailsCorrection procedure

732
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
CAUTION
■Replacing a flat tire
Observe the following precautions to reduce the risk of death or serious injury.
●Do not touch the disc wheels or the area around the brakes immediately after the
vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around the brakes
will be extremely hot. Touching these areas with hands, feet or other body parts
while changing a tire, etc. may result in burns.
●Lower the spare tire completely to the ground before removing it from under the
vehicle.
●Do not try to remove the wheel ornament by hand. Take due care in handling the
ornament to avoid unexpected personal injury.
●Never use oil or grease on the wheel bolts or wheel nuts. 
The oil or grease can cause the wheel nuts to loosen, causing a serious accident.
Remove any oil or grease on the wheel bolts or wheel nuts.
●Have the wheel nuts tightened with a torq ue wrench to 83 ft•lbf (112 N•m, 11.5
kgf•m) as soon as possible after changing wheels. 
Failure to follow these precautions could cause the nuts to loosen and the wheels
may fall off, which could lead to an accident causing death or serious injury.
●Do not attach a heavily damaged wheel orna ment, as it may fly off the wheel while
the vehicle is moving.
●When installing a tire, only use wheel nuts that have been specifically designed
for that wheel.
●If there are any cracks or deformations in the bolt screws, nut threads or bolt
holes of the wheel, have the vehicle inspected by your Lexus dealer.
Failure to follow these precautions could cause the wheel nuts to loosen and the tire
to fall off, resulting in death or serious injury.

759
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60E69U)
Tr a n s f e r
*: “Toyota Genuine Transfer Gear oil LF” is filled in your Lexus vehicle at factory
fill. Use Lexus approved “Toyota Genuine Tr ansfer Gear oil LF” or an equivalent
of matching quality to satisfy the above specification. Please contact your Lexus
dealer for further details.
Brakes
*1: Minimum pedal clearance when depressed with a force of 110 lbf (490 N, 50 kgf) while the engine is running.
*2: Parking brake pedal travel when depressed with a force of 45.0 lbf (200 N, 20.4 kgf).
Oil capacity1.5 qt. (1.4 L, 1.2 Imp.qt.)
Oil type*Toyota Genuine Transfer 
Gear oil LF or equivalent
Recommended oil viscositySAE 75W
Pe d a l c l e a r a n c e*13.4 in. (86 mm) Min.
Pedal free play0.04  0.24 in. (1.0  6.0 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Parking brake pedal travel*25  7 clicks
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3

772
6-1. Specifications
GX460_U.S.A. (OM60E69U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation 
pressureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning and
additional weight optional engine

773
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60E69U)
Tire related termMeaning
Maximum loaded 
vehicle weight
The sum of: 
(a) Curb weight 
(b) Accessory weight 
(c) Vehicle capacity weight 
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants spec-
ified 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* below
Production options
weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter 
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width