ignition TOYOTA SEQUOIA 2007 1.G Workshop Manual

1842007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
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 “ON”,
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.
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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 “ON”. If the indicator light does not
come on when the ignition is turned on,
contact your Toyota dealer.
Traction control system
(twowheel drive models)

1852007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
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TRACTION CONTROL OFF MODE
If your wheels get stuck in a ditch
when you are driving on a severe off
road and sand, turn off the traction
control system. This system that con-
trols engine performance interferes with
the process of freeing your wheels.
To turn off: Push “TRAC OFF” switch.
The “TRAC OFF” indicator light will come
on.
The vehicle stability control system is al-
ways activated, even if the traction control
system is turned off.
To turn on: Push “TRAC OFF” switch
once again.
The “TRAC OFF” indicator light will go off.The traction control system will automati-
cally go on, and the “TRAC OFF” indicator
light will go off when you drive over 30
km/h (19 mph) even if the “TRAC OFF”
switch is pushed to cancel the traction
control system.
“TRAC OFF” indicator light comes on for
a few seconds when the ignition key is
turned to “ON”. It will come on again
when you push the “TRAC OFF” switch to
turn off the system.
In the following cases, contact your Toyota
dealer:The indicator light does not come on
when the ignition key is turned “ON”.
The indicator light remains on after the
ignition is turned on.
The indicator light comes on with the
normal driving mode while driving.
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“VSC TRAC” warning light
This light warns that there is a problem
somewhere in the traction control system
or the vehicle stability control system.
The warning light will come on when the
ignition key is turned to “ON” and will go
off after a few seconds.

1862007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
The brake pad or actuator temperature
increases during continuous operation of
the traction control system or vehicle sta-
bility control system such as on slippery
roads. If the brake pad or actuator tem-
perature becomes too high while the trac-
tion control system or vehicle stability
control system is operating, a buzzer will
start to sound intermittently to indicate
that the 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 “VSC TRAC” warning light
will come on and the traction control sys-
tem temporarily stops operating in order to
protect the brake pad. (Although the trac-
tion control system does not operate,
there is no problem to continue your driv-
ing.) The system will be automatically re-
stored after a short time and the warning
light goes out.
If the light comes on while driving, the
traction control system does not work.
However, as conventional braking operates
when applied, there is no problem to con-
tinue your driving. In the following cases, contact your Toyota
dealer:
The warning light does not come on
after the ignition key is turned to “ON”.
The warning light remains on after the
ignition key is turned to “ON”.
The warning light comes on while driv-
ing.
The “TRAC OFF” indicator light will come
on when the “VSC TRAC” warning light
comes on even if the “TRAC OFF” switch
is not pushed. The active traction control system auto-
matically helps prevent the spinning of
4 wheels (4WD mode) or rear wheels
(2WD mode) when the vehicle is started
or accelerated on slippery road sur-
faces.
When the ignition key is turned to “ON”,
the system automatically turns on.
CAUTION
Under certain slippery road condi-
tions, full traction of the vehicle and
power against 4 wheels (4WD mode)
or rear wheels (2WD mode) cannot be
maintained, even though the active
traction control system is in opera-
tion. 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.
Active traction control system
(fourwheel drive models)

1872007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
u16030
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 “ON”. If the indicator light does not
come on when the ignition is turned on,
contact your Toyota dealer.u16029
“VSC TRAC” 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 “ON” and will go
off after a few seconds.

1882007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
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 “VSC TRAC” 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 “ON”.
The warning light remains on after the
ignition key is turned to “ON”.
The warning light comes on while driv-
ing.
The “VSC OFF” indicator light will come
on when the “VSC TRAC” 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 antilock 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.
The vehicle stability control system is acti-
vated when the vehicle speed is more
than the following speed.
Tw o
−wheel drive models:
15 km/h (9 mph)
Four −wheel drive models:
“2WD” or “4HI” mode 15 km/h (9 mph)
“4LO” 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

1892007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
CAUTION
Do not rely excessively on the ve-
hicle stability control system. Even
if the vehicle stability control sys-
tem is operating, you must always
drive carefully and attentively to
avoid serious injury. Reckless driv-
ing will result in an unexpected ac-
cident. If the slip indicator light
blinks, sounding an alarm sounds,
special care should be taken while
driving.
Only use tires of specified size. The
size, manufacturer, brand and tread
pattern for all 4 tires should be the
same. If you use the tires other
than specified, or different type or
size, the vehicle stability control
system may not function correctly.
When replacing the tires or wheels,
contact your Toyota dealer. (See
“Checking and replacing tires” on
page 440 in Section 72.)
u16030
If the vehicle is going to skid during driv-
ing, the slip indicator light blinks and an
alarm sounds intermittently. Special care
should be taken while driving.
The slip indicator light comes on for a few
seconds when the ignition key is turned
to “ON”. If the indicator light does not
come on when the ignition is turned on,
contact your Toyota dealer.
u16034
Fourwheel drive models only—
Pushing the center differential lock
switch automatically turns the vehicle
stability control system off. At this
time, the “VSC OFF” indicator comes
on with the center differential lock indi-
cator light.
“VSC OFF” indicator light comes on for a
few seconds when the ignition key is
turned to “ON”.

1902007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
In the following cases, contact your Toyota
dealer:
The indicator light does not come on
when the ignition key is turned “ON”.
The indicator light remains on after the
ignition is turned on.
The indicator light comes on when the
system is on while driving.
NOTICE
Make sure that the center differential
lock indicator light goes off before
normal driving.
u16029
“VSC TRAC” warning light
This light warns that there is a problem
somewhere in the vehicle stability control
system, traction control system (two−wheel
drive models) or active traction control
system (four −wheel drive models).
The warning light will come on when the
ignition key is turned to “ON” and will go
off after a few seconds.
If the light comes on while driving, the
system does not work. However, as con-
ventional braking operates when applied,
there is no problem to continue your driv-
ing. In the following cases, contact your Toyota
dealer:
The warning light does not come on
after the ignition key is turned to “ON”.
The warning light remains on after the
ignition key is turned to “ON”.
The warning light comes on while driv-
ing.
Tw o −wheel drive models—The “TRAC
OFF” indicator light will come on when the
“VSC TRAC” warning light comes on even
if the “TRAC OFF” switch is not pushed.
Four −wheel drive models—The “VSC OFF”
indicator light will come on when the “VSC
TRAC” warning light comes on even if the
center differential lock switch is not
pushed.

1952007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
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(d) Indicator lights1. Height control indicator lights
2. Manual control mode indicator light
When the ignition switch is turned on, all
the indicator lights come on. The indicator
light showing the present mode only re-
mains on and all other lights go off after
a few seconds. This means the system
operates correctly.
u16041
If you change the vehicle height mode,
the indicator lights change as follows:
When changing the vehicle height from
“N” mode to “HI”: 1. The “N” mode indicator light goes off and the “HI” mode indicator light blinks.
2. After the vehicle height control reaches “HI” mode, the “HI” mode indicator light
remains on. If the underbody of the vehicle has
touched the surface on bumpy roads or
the area around the rear suspension is
coated with ice, the vehicle height cannot
be changed with the height control switch.
In this case, move the vehicle or remove
the ice around the rear suspension. The
vehicle height will change to the selected
mode, after a while, when the ignition
switch is turned to the “ON” position.
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
your 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.

1992007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
Do not lower the vehicle height for
bumpy roads. If the underbody of
the vehicle touches the road sur-
face, the vehicle may be damaged.
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(c) Indicator lights
1. Height control indicator lights
2. Manual control mode indicator light
When the ignition switch is turned on, all
the indicator lights come on. The indicator
light showing the present mode only re-
mains on and all other lights go off after
a few seconds. This means the system
operates correctly. When you change the vehicle height in
manual mode, the height control indicator
light changes as follows:
Tw o
−wheel drive models
“HI”: 20 mm (0.8 in.) or higher than the standard height
“N”: Between −7.5 mm (0.3 in.) and 20
mm (0.8 in.) of the standard
height
“LO”: Lower than −7.5 mm (0.3 in.) of
the standard height
Four −wheel drive models
“HI”: 20 mm (0.8 in.) or higher than the standard height
“N”: Between −15 mm (0.6 in.) and 20
mm (0.8 in.) of the standard
height
“LO”: Lower than −15 mm (0.6 in.) of
the standard height

2002007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
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 height
control mode select switch, and bring your
vehicle to your Toyota dealer as soon as
possible to have it checked.
The tire pressure warning system warns
you that the tire inflation pressure is
low.
The tire pressure warning system is not
a substitute for checking normal tire infla-
tion pressure. Check the tire inflation
pressure with a tire pressure gauge regu-
larly.
CAUTION
The warning system may not activate
immediately if blowout or sudden air
loss should occur.
Tire pressure warning system