check engine light TOYOTA SEQUOIA 2001 Service Manual PDF

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(d) Discharge Warning Light
This light warns that the battery is being
discharged.
If it comes on while you are driving, there
is a problem somewhere in the charging
system.
The engine ignition will continue to oper-
ate, however, until the battery is dis-
charged. Turn off the air conditioning,
blower, radio, etc., and drive directly to
the nearest Toyota dealer or repair shop.
NOTICE
Do not continue driving if the engine
drive belt is broken or loose.
(e) Malfunction Indicator Lamp
This lamp comes on when the ignition
key is turned to the ªONº position and
goes off after the engine starts. This
means that the warning light system is
operating properly.
If the lamp remains on or the lamp
comes on while driving, first check the
followings.

Empty fuel tank
If the fuel tank is empty, refuel immedi-
ately.

Loose fuel tank cap
If the fuel tank cap is loose, securely
tighten it.
These cases are temporary malfunctions.
The malfunction indicator lamp will go off
after taking several driving trips.
If the lamp does not go off even after
several trips, contact your Toyota dealer
as soon as possible.
If the fuel tank is not empty or the fuel
tank cap is not loose...

There is a problem somewhere in the
engine, emission control system, elec-
tronic throttle control system, automatic
transmission electrical system or warn-
ing light system itself.
Contact your Toyota dealer as soon as
possible to service the vehicle.
If engine speed does not increase when
the accelerator pedal is depressed, there
may be a problem somewhere in the elec-
tronic throttle control system.
At this time, vibration may occur. Howev-
er, if you depress the accelerator pedal
more firmly and slowly, you can drive your
vehicle at low speeds. Have your vehicle
checked by your Toyota dealer as soon as
possible.Even if the abnormality of the electronic
throttle control system is corrected during
low speed driving, the system may not be
recovered until the engine is stopped and
the ignition key is turned to ªACCº or
ªLOCKº position.
CAUTION
Be especially careful to prevent erro-
neous pedal operation.
Emissions inspection and maintenance
(I/M) programs
We recommend you to contact your
Toyota dealer to check your vehicle's
emission control system and OBD
(On±Board Diagnostics) system before
taking your vehicle for a state emission
inspection.
For details, see ªEmissions Inspection and
Maintenance (I/M) programsº on page 416
in Section 6.

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(l) Low Tire Pressure Warning Light
This light warns that the tire pressure of
one or more of your tires (including the
spare tire) is low. The light comes on
when the ignition key is turned to the
ªONº position. It goes off after a few sec-
onds. This indicates that the tire pressure
warning system is functioning properly.
If the warning light comes on, stop your
vehicle in a safe place as soon as pos-
sible and check that the inflation pressure
of all tires (including the spare tire) is as
specified on the tire and loading informa-
tion label. (See ªChecking tire inflation
pressureº on page 429 in Section 7±2.)
The light should go off a few minutes after
the tire pressure is adjusted.
If the warning light blinks, the tire pres-
sure warning system may be malfunction-
ing. Contact your Toyota dealer.
For details, see ªTire pressure warning
systemº on page 198 in Section 1±7.
(m) Low Windshield Washer Fluid Level
Warning Light
This light warns that the windshield wash-
er fluid level is too low. Add washer fluid
at your earliest opportunity. (For instruc-
tions, see ªAdding washer fluidº on page
444 in Section 7±3.)(n) Engine Oil Replacement Reminder
Light (for vehicles sold in U.S.A.)
This light acts as a reminder to replace
the engine oil.
This light will come on when the ignition
key is turned to ªONº and will go off after
about a few seconds.
When you drive for about 7200 km (4500
miles) after the engine oil replacement,
this light illuminates for about 3 seconds
and then flashes for about 12 seconds
with the ignition key turned to the ªONº
position. If you continue driving without
replacing the engine oil, and if the dis-
tance driven exceeds 8000 km (5000
miles), the light will come on after the
ignition key is turned to ªONº position.
The light will remain on thereafter.
If the light is flashing, we recommend that
you replace the engine oil at an early
opportunity depending on the driving and
road conditions. If the light comes on,
replace it as soon as possible.The system must be reset after the en-
gine oil replacement. Reset the system by
the following procedure:
1. Turn the ignition key to the ªACCº or
ªLOCKº position with the odometer
reading shown. (For details, see
ªOdometer and two trip metersº on
page 160 in this Section.)
2. Turn the ignition key to the ªONº posi-
tion while holding down the trip meter
reset knob.
Hold down the knob for at least 5 sec-
onds. The odometer indicates ª000000º
and the light goes off.
If the system fails to reset, the light will
continue flashing.
(o) Key Reminder Buzzer
This buzzer acts as a reminder to remove
the key when you open the driver's door
with the ignition key in the ªACCº or
ªLOCKº position.

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CHECKING SERVICE REMINDER
INDICATORS (except the low fuel level
warning light and low windshield
washer fluid level warning light)
1. Apply the parking brake.
2. Open one of the side doors or back
door.
The open door warning light should
come on.
3. Close the door.
The open door warning light should go
off.
4. Turn the ignition key to ªONº, but do
not start the engine.
All the service reminder indicators ex-
cept the open door warning light should
come on. The ªABSº and ªVSC TRACº
warning lights, low tire pressure warn-
ing light and engine oil replacement
reminder light go off after a few sec-
onds. The SRS warning light goes off
after about 6 seconds. (The ªTRAC
OFFº (two±wheel drive models) or
ªVSC OFFº (four±wheel drive models),
ªRSCA OFFº indicator lights, height
control indicator light, manual control
mode indicator light and slip indicator
light also come on and go off after a
few seconds.)If any service reminder indicator or warn-
ing buzzer does not function as described
above, have it checked by your Toyota
dealer as soon as possible.

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The traction control system automatical-
ly helps prevent the spinning of rear
wheels when the vehicle is started or
accelerated on slippery road surfaces.
When the ignition key is turned to ªONº,
the system automatically turns on.
CAUTION
Under certain slippery road condi-
tions, full traction of the vehicle and
power against rear wheels cannot be
maintained, even though the traction
control system is in operation. Do not
drive the vehicle under any speed or
maneuvering conditions which may
cause the vehicle to lose traction
control. In situations where the road
surface is covered with ice or snow,
your vehicle should be fitted with
snow tires or tire chains. Always
drive at an appropriate and cautious
speed for the present road condi-
tions.
NORMAL DRIVING MODE
Leave the system on during the ordi-
nary driving so that it can operate
when needed.
You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle
begins to move. This means that the trac-
tion control system is in the self±check
mode, but does not indicate a malfunction.When the traction control system is oper-
ating, the following conditions occur:

The system controls the spinning of the
rear wheels. At this time, the slip indi-
cator light blinks.

You may feel vibration or noise in your
vehicle, caused by operation of the
brakes. This indicates the system is
functioning properly.
The slip indicator light comes on for a few
seconds when the ignition key is turned
to ªONº. If the indicator light does not
come on when the ignition is turned on,
contact your Toyota dealer.
Traction control system
(two±wheel drive models)

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Leave the system on during the ordi-
nary driving so that it can operate
when needed.
You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle
begins to move. This means that the ac-
tive traction control system is in the self±
check mode, but does not indicate a mal-
function.When the active traction control system is
operating, the following conditions occur:

The system controls the spinning of the
4 wheels (4WD mode) or rear wheels
(2WD mode). At this time, the slip indi-
cator light blinks.

You may feel vibration or noise in your
vehicle, caused by operation of the
brakes. This indicates the system is
functioning properly.
The slip indicator light comes on for a few
seconds when the ignition key is turned
to ªONº. If the indicator light does not
come on when the ignition is turned on,
contact your Toyota dealer.
ªVSC TRACº warning light
This light warns that there is a problem
somewhere in the active traction control
system or the vehicle stability control sys-
tem.
The warning light will come on when the
ignition key is turned to ªONº and will go
off after a few seconds.

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The brake pad or actuator temperature
increases during continuous operation of
the active traction control system or ve-
hicle stability control system such as on
slippery roads. If the brake pad or actua-
tor temperature becomes too high while
the active traction control system or ve-
hicle stability control system is operating,
a buzzer will start to sound intermittently
to indicate that the active traction control
system can no longer operate. In this
case, stop your vehicle immediately at a
safe place.
If the system continues to operate, the
buzzer sound changes from intermittent to
continuous. (The continuous buzzer
sounds for about 3 seconds.)
At the time, the ªVSC TRACº warning light
will come on and the active traction con-
trol system temporarily stops operating in
order to protect the brake pad. (Although
the active traction control system does not
operate, there is no problem to continue
your driving.) The system will be automati-
cally restored after a short time and the
warning light goes out.
If the light comes on while driving, the
active traction control system does not
work. However, as conventional braking
operates when applied, there is no prob-
lem to continue your driving.In the following cases, contact your Toyota
dealer:

The warning light does not come on
after the ignition key is turned to ªONº.

The warning light remains on after the
ignition key is turned to ªONº.

The warning light comes on while driv-
ing.
The ªVSC OFFº indicator light will come
on when the ªVSC TRACº warning light
comes on even if the center differential
lock switch is not pushed.The vehicle stability control system
helps provide integrated control of the
systems such as anti±lock brake sys-
tem, traction control, engine control,
etc. This system automatically controls
the brakes and engine to help prevent
the vehicle from skidding when corner-
ing on a slippery road surface or oper-
ating steering wheel abruptly.
This vehicle stability control activates
when the vehicle speed is more than the
following speed.
Two±wheel drive models:
15 km/h (9 mph)
Four±wheel drive models:
ª2WDº or ª4HIº mode
15 km/h (9 mph)
ª4LOº mode 30 km/h (18 mph)
You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle
begins to move. This means that the sys-
tem is in the self±check mode but does
not indicate a malfunction.
Vehicle stability control system

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NOTICE

If the vehicle height is changed fre-
quently when the vehicle is heavily
loaded, the compressor may over-
heat, causing the vehicle height ad-
justment operation to stop.

Before you lower the vehicle height
with the height select switch, check
under the vehicle to make sure
nothing to damage the vehicle or
no one to be injured is there and
that the underbody of the vehicle
does not touch the ground.

After unloading, the height of a ve-
hicle equipped with the rear height
control air suspension becomes
slightly higher than the normal ve-
hicle height. Take sufficient care
where the overhead height is re-
stricted.

Do not select ªLOº mode for bumpy
roads. If the underbody of the ve-
hicle touches the road surface, the
vehicle may be damaged.
If you attempt to adjust the vehicle height
with anything such as snow, ice, or stones
in contact with the vehicle body, the ve-
hicle height may not change. In this case,
stop the vehicle, press the mode select
switch, and check that manual control
mode indicator light comes on. Then, re-
move the obstruction.
CAUTION
If you drive through water, set the
vehicle height to ªHIº with the height
select switch and then change to
manual control mode by pushing the
mode select switch. Do not exceed 30
km/h (18 mph) or ªHIº mode will au-
tomatically change to ªNº mode. Do
not drive through water deeper than
about 700 mm (28 in.) even if the
vehicle height is in ªHIº mode.
NOTICE

When jacking up or installing tire
chains, be sure to set manual con-
trol mode by pushing the mode se-
lect switch and stop the engine.
Otherwise, the vehicle height may
change because of the automatic
leveling function, resulting in an ac-
cident.

If your vehicle must be towed, set
the vehicle height to ªNº and
change to manual control mode.
Otherwise, the vehicle height may
change because of the automatic
leveling function, resulting in an ac-
cident.

If your vehicle gets stuck in a
ditch, set manual control mode by
pushing the mode select switch.
Otherwise, the vehicle height may
change because of the automatic
leveling function, resulting in an ac-
cident.

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(e) 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.
When you start the engine, the vehicle
returns to the previous height.
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.
When you start the engine, the vehicle
returns to the previous height.
If you stop the engine, the vehicle height
may change in accordance with the
change in the temperature. When you
start the engine, the vehicle returns to the
previous height.(f) Rear height control failure warning
If there is a problem somewhere in the
rear height control air suspension, ªNº
mode is automatically selected. If this oc-
curs, the manual control mode indicator
light blinks and the vehicle height control
cannot be activated until the malfunction
is corrected. If this is the case, bring your
vehicle to your Toyota dealer as soon as
possible and have it checked.
(a) Selecting manual control mode
To select manual control mode, push
the mode select switch with the vehicle
stopped. The manual control mode indi-
cator light comes on and the vehicle
height is fixed at the current height.
The height can be adjusted by pushing
the height select switch.
The selected height is memorized in the
system even after the engine is stopped.
If you push the mode select switch again,
the manual control mode indicator light
goes out and automatic control mode is
selected.
ÐManual control mode

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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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If you need accelerationÐfor example,
when passingÐdepress the accelerator
pedal enough for the vehicle to exceed
the set speed. When you release it, the
vehicle will return to the speed set prior
to the acceleration.
CANCELLING THE PRESET SPEED
You can cancel the preset speed by:
a. Pulling the lever in the ªCANCELº di-
rection and releasing it.
b. Depressing the brake pedal.
c. Pushing ªON±OFFº button.
If the vehicle speed falls below about 40
km/h (25 mph), the preset speed will auto-
matically cancel out.
If the vehicle speed drops 16 km/h (10
mph) below the preset speed, the preset
speed will also automatically cancel out.
If the preset speed automatically cancels
out other than for the above cases, have
your vehicle checked by your Toyota deal-
er at the earliest opportunity.RESETTING TO A FASTER SPEED
Push the lever up in the ª+ RESº direction
and hold it. Release the lever when the
desired speed is attained. While the lever
is held up, the vehicle will gradually gain
speed.
However, a faster way to reset is to ac-
celerate the vehicle and then push the
lever down in the ª± SETº direction.
RESETTING TO A SLOWER SPEED
Push the lever down in the ª± SETº direc-
tion and hold it. Release the lever when
the desired speed is attained. While the
lever is held down, the vehicle speed will
gradually decrease.
However, a faster way to reset is to de-
press the brake pedal and then push the
lever down in the ª± SETº direction.
Even if you turn off the overdrive switch,
with the cruise control on, engine braking
will not be applied because the cruise
control is not cancelled. To decrease the
vehicle speed, reset to a slower speed
with the cruise control lever or depress
the brake pedal. If you use the brake
pedal, cruise control is cancelled.RESUMING THE PRESET SPEED
If the preset speed is cancelled by pulling
the control lever or by depressing the
brake pedal, pushing the lever up in the
ª+ RESº direction will restore the speed
set prior to cancellation.
CRUISE CONTROL FAILURE WARNING
If the ªCRUISEº indicator light in the
instrument cluster flashes when using the
cruise control, press the ªON±OFFº button
to turn the system off and then press it
again to turn it on.
If any of the following conditions then oc-
curs, there is some trouble in the cruise
control system.

The indicator light does not come on.

The indicator light flashes again.

The indicator light goes out after it
comes on.
If this is the case, contact your Toyota
dealer and have your vehicle inspected.