inflation pressure TOYOTA SEQUOIA 2001 Service User Guide
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: SEQUOIA, Model: TOYOTA SEQUOIA 2001Pages: 4323, PDF Size: 48.49 MB
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In the following cases, there is a problem
somewhere in you rear height control air
suspension. Although there is no problem
to continue normal driving, have the rear
height control air suspension checked by
you Toyota dealer as soon as possible.
The height control indicator light and
manual control mode indicator light do
not come on when the ignition switch
is turned on.
The manual control mode indicator light
blinks.
(d) Parking and stopping tips
If you immediately stop the engine to park
the vehicle after off±road driving, the ve-
hicle height is lowered slightly as the ve-
hicle becomes cool. When parking, make
sure there is nothing that will be in con-
tact with the underbody of the vehicle.
If you park the vehicle for a long time,
the vehicle height may be gradually low-
ered. When parking for a long time, make
sure there is nothing that will be in con-
tact with the underbody of the vehicle.
If you stop the engine, the vehicle height
may change in accordance with the
change in the temperature.(e) Rear height control failure warning
If there is a problem somewhere in the
rear height control air suspension, the
manual control mode indicator light blinks.
If this is the case, change to the automat-
ic control mode by pushing the mode se-
lect switch, and bring your vehicle to your
Toyota dealer as soon as possible to have
it checked.The tire pressure warning system is de-
signed to provide warning when tire
inflation pressure of one or more of
your tires (including the spare tire) is
low. The low tire pressure warning light
comes on to inform you that low tire
inflation pressure may hamper driving.
Tire pressure warning
systemÐ
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LOW TIRE PRESSURE WARNING LIGHT
This light comes on when the ignition key
is turned to the ªONº position. It goes off
after a few seconds. This indicates that
the tire pressure warning system is func-
tioning properly.If the low tire pressure warning light
comes on or blinks, do the following.
If the warning light comes on:
Stop your vehicle in a safe place as
soon as possible and check that the
inflation pressure of all tires (including
the spare tire) is as specified on the
tire and loading information label. (See
ªChecking tire inflation pressureº on
page 429 in Section 7±2.) If the warning
light comes on even after tire inflation
pressure adjustment, you may have a
flat tire. If you have a flat tire, replace
it with the spare tire. For details, see
ªIf you have a flat tireº on page 387 in
Section 4.
The warning light goes off a few minutes
after air is put into the deflated tire.
This warning light may turn on due to
natural causes such as natural air leaks
or tire pressure changes caused by tem-
perature. In this case, adjusting the tire
pressure will turn off the warning light.
CAUTION
When the tire pressure warning light
comes on, observe the following in-
structions:
Depending on the conditions, re-
duce to an appropriate speed as
soon as possible.
Adjust the tire pressure to the spe-
cified level as soon as possible.
Avoid abrupt steering wheel maneu-
vering and braking. Tire deteriora-
tion may reduce steering wheel con-
trol and brake effectiveness. This
may lead to serious injury or death.
The tire pressure warning system
may not activate immediately if sud-
den bursts of air leakage occur.
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NOTICE
Do not use liquid sealants for a flat
tire as air pressure sensors will be
damaged.
When the tires must be repaired or
replaced, have them repaired or re-
placed by the nearest Toyota dealer
or authorized tire dealer. The tire
pressure sensors will be affected by
the installation or removal of tires.
The tire pressure warning system is
not to be used as a substitute for
regular inspections. Be sure to
check the air pressure in the tires
on a regular basis.
When the tires must be replaced,
replace the grommets for air pres-
sure sensors as well.
If the warning light blinks:
The tire pressure warning system may
be malfunctioning. Contact your Toyota
dealer.
SYSTEM MALFUNCTION
The tire pressure warning system does
not function properly under certain cir-
cumstances. In the following cases, the
low tire pressure warning light may not
come on even if the tire inflation pres-
sure is low, or it may come on when
the tire inflation pressure is actually
normal.
Electric devices or facilities using simi-
lar radio wave frequencies are nearby.
A radio set to similar frequencies is in
use.
A lot of snow or ice covers the ve-
hicle, in particular, around the wheels
or wheel housings.
The tires are not equipped with an air
pressure sensor.
Snow tires or tire chains are used.
Non±genuine Toyota wheels are used.
The sensor battery is expired.
Radio waves from the air pressure sen-
sor installed on the spare tire cannot
be received.
CAUTION
The use of non±genuine wheels will
cause the air pressure sensors to
transmit the electronic code in dif-
ferent manner, resulting in the sys-
tem failure.
The use of different type of tires
with genuine wheels may also
cause the malfunction of the sys-
tem.
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CAUTION
When the tire pressure monitoring
system warning light is lit, one or
more of your tires is significantly un-
der±inflated. You should stop and
check your tires as soon as possible,
and inflate them to the proper pres-
sure as indicated on the vehicle's tire
information placard. Driving on a sig-
nificantly under±inflated tire causes
the tire to overheat and can lead to
tire failure. Under±inflation also re-
duces fuel efficiency and tire tread
life, and may affect the vehicle's han-
dling and stopping ability. Each tire,
including the spare, should be
checked monthly when cold and set
to the recommended inflation pres-
sure as specified in the vehicle plac-
ard and owner 's manual.
For vehicles sold in U.S.A.
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
(1) This device may not cause harmful
interference, and (2) this device must
accept any interference received, includ-
ing interference that may cause unde-
sired operation.
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TIRE PRESSURE WARNING SYSTEM
RESET SWITCH
The tire pressure warning system need
to be initialized in the following condi-
tions:
After replacing or rotating tires or
wheels
After replacing an air pressure sen-
sor.
When initializing the system, the pres-
ent tire condition is stored as a stan-
dard.To initialize the system, perform the fol-
lowing:
1. Park the vehicle at a safe place and
apply the parking brake. Stop the en-
gine.
2. Adjust the pressure of all the installed
tires to the specified level. (See ªTiresº
on page 458 in Section 8.)
3. Turn the ignition key to ªONº.
4. Push and hold the reset switch until
the low tire pressure warning light
blinks three times.
Initialization is completed or over for more
than 20 minutes.
When initializing the system, make sure
the low tire pressure warning light blinks
three times. If the warning light does not
blink three times, initialization will fail and
the tire pressure warning system will not
function properly. In this case, initialize
the system again.
Do not push the reset switch without ad-
justing 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 per-
formed.
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7. ªTUBELESSº or ªTUBE
TYPEºÐA tubeless tire does not
have a tube inside the tire and air
is directly filled in the tire. A tube
type tire has a tube inside the tire
and the tube maintains the air
pressure.
8. Load limit at maximum cold tire
inflation pressureÐFor details,
see ªChecking and replacing tiresº
on page 432.
9. Maximum cold tire inflation
pressureÐThis means the pres-
sure to which a tire may be in-
flated. For details about recom-
mended cold tire inflation
pressure, see ªTiresº on page 458.
10.Summer tire or all season
tireÐAn all season tire has ªM+Sº
on the sidewall. The tire not
marked with ªM+Sº is a summer
tire. For details, see ªTypes of
tiresº on page 358.
This illustration indicates typical DOT
and Tire Identification Number (TIN).
1. ªDOTº symbol
2. Tire Identification Number (TIN)
3. Tire manufacturer 's identification
mark
4. Tire size code
5. Manufacturer 's optional tire type
code
6. Manufacturing week
7. Manufacturing yearThe ªDOTº symbol certifies that the
tire conforms to applicable Federal
Motor Vehicle Safety Standards.
ÐDOT and Tire Identification
Number (TIN)
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Ti r e relat ed ter mMeaning
Accessory weight
the combined weight (in excess of those standard items which may be
replaced) 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 pressure
tire 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 condition
Curb weight
the weight of a motor vehicle with standard equipment including the
maximum capacity of fuel, oil, and coolant, and, if so equipped, air
conditioning and additional weight optional engine
Intended outboard sidewall
(A) the sidewall that contains a whitewall, bears white lettering or bears
manufacturer, 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 particular
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 weight
the sum ofÐ
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight
ÐGlossary of tire terminology
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Ti r e relat ed ter mMeaning
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 weight
the combined weight of those installed regular production options weighing
over 2.3 kg (5 lb.) in excess of those 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
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 tire 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
Vehicle capacity weight
(Total load capacity)the rated cargo and luggage load plus 68 kg (150 lb.) times the vehicle's desig-
nated seating capacity
Vehicle maximum load on the tirethe load on an individual tire that is determined by distributing to each axle
its share of the maximum loaded vehicle weight and dividing by two
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Improving fuel economy is easyÐjust 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 cor-
rect pressure. Underinflation causes
tire wear and wastes fuel. See page
429 in Section 7±2 for instructions.
Do not carry unneeded weight in
your vehicle. Excess weight puts a
heavier load on the engine, causing
greater fuel consumption.
Avoid lengthy warm±up idling. Once
the engine is running smoothly, begin
drivingÐbut gently. Remember, howev-
er, that on cold winter days this may
take a little longer.
Keep the automatic transmission
overdrive turned on when engine
braking is not required. Driving with
the overdrive off will reduce the fuel
economy. (For details, see ªAutomatic
transmissionº on page 173 in Section
1±7.)
Accelerate slowly and smoothly.
Avoid jackrabbit starts. Get into high
gear as quickly as possible.
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.
Avoid engine lugging or over±rev-
ving. Use a gear position suitable for
the road on which you are travelling.
Avoid continuous speeding up and
slowing down. Stop±and±go driving
wastes fuel.
Avoid unnecessary stopping and
braking. Maintain a steady pace. Try
to time the traffic signals so you only
need to stop as little as possible or
take advantage of through streets to
avoid traffic lights. Keep a proper dis-
tance from other vehicles to avoid sud-
den braking. This will also reduce wear
on your brakes.
Avoid heavy traffic or traffic jams
whenever possible.
Do not rest your foot on the brake
pedal. This causes premature wear,
overheating and poor fuel economy.
Maintain a moderate speed on high-
ways. The faster you drive, the greater
the fuel consumption. By reducing your
speed, you will cut down on fuel con-
sumption.
Keep the front wheels in proper
alignment. Avoid hitting the curb and
slow down on rough roads. Improper
alignment not only causes faster tire
wear but also puts an extra load on
the engine, which, in turn, wastes fuel.
Keep the bottom of your vehicle free
from mud, etc. This not only lessens
weight but also helps prevent corro-
sion.
Keep your vehicle tuned±up and in
top shape. A dirty air cleaner, improp-
er valve clearance, dirty plugs, dirty oil
and grease, brakes not adjusted, etc.
all lower engine performance and con-
tribute to poor fuel economy. For longer
life of all parts and lower operating
costs, keep all maintenance work on
schedule, and if you often drive under
severe conditions, see that your vehicle
receives more frequent maintenance.
(For scheduled maintenance informa-
tion, please refer to the ªScheduled
Maintenance Guideº or ªOwner 's Manu-
al Supplementº.)
How to save fuel and make
your vehicle last longer
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Tire inflation pressure
Check the pressure with a gauge ev-
ery two weeks, or at least once a
month. See page 429 in Section 7±2
for additional information.
Tire surface and wheel nuts
Check the tires carefully for cuts,
damage or excessive wear. See page
432 in Section 7±2 for additional in-
formation. When checking the tires,
make sure no nuts are missing, and
check the nuts for looseness. Tighten
them if necessary.
Tire rotation
Rotate the tires according to the
maintenance schedule. (For sched-
uled maintenance information, please
refer to the ªScheduled Maintenance
Guideº or ªOwner 's Manual Supple-
mentº.) See page 434 in Section 7±2
for additional information.Be on the alert for changes in perfor-
mance, sounds, and visual tip±offs that
indicate service is needed. Some impor-
tant clues are as follows:
Engine missing, stumbling, or pinging
Appreciable loss of power
Strange engine noises
A leak under the vehicle (however, wa-
ter 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 im-
mediately.)
Flat±looking tire; 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 floor; vehicle pulls to one side
when braking
Engine coolant temperature continually
higher than normal
Engine continually runs hot; oil pres-
sure gauge stays low
If you notice any of these clues, take your
vehicle to your Toyota dealer as soon as
possible. It probably needs adjustment or
repair.
CAUTION
Do not continue driving with the ve-
hicle unchecked. It could result in se-
rious vehicle damage and possibly
personal injury.
Does your vehicle need
repairing?