traction control TOYOTA SEQUOIA 2007 1.G Owners Manual

viii2007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
Installation of a mobiletwoway radio system
As the installation of a mobile two −way radio system in
your vehicle could affect electronic systems such as
multiport fuel injection system/sequential multiport fuel
injection system, electronic throttle control system,
cruise control system, anti −lock brake system, traction
control system (two −wheel drive models)/active traction
control system (four −wheel drive models), vehicle stabil-
ity control system, rear height control air suspension
system, tire pressure warning system, SRS airbag sys-
tem and seat belt pretensioner system, be sure to
check with your Toyota dealer for precautionary mea-
sures or special instructions regarding installation.
Tires and loading on your To y o t a
Underinflated or overinflated tire pressure and the ex-
cess load may result in the deterioration of steering abili-
ty and braking ability, leading to an accident. Check the
tire inflation pressure peri odically and be sure to keep
the load limits given in this Owner ’s Manual. For details
about tire inflation pressure and load limits, see pages
437 and 363.

52007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
18. Height control mode select switch
19. Ashtray
20. Cigarette lighter
21. Traction control off switch (“TRAC OFF” switch)
22. Cruise control switch
23. Tire pressure warning system reset switch
24. Audio remote control switches
25. Tilt steering lock release lever
26. Roll sensing of curtain shield airbags off switch
27. Instrument panel light control knob

102007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
or
Driver ’s seat belt reminder light∗1
Charging system warning light∗1
Low fuel level warning light∗1
Brake system warning light∗1
Malfunction indicator lamp∗1
Anti −lock brake system warning light∗
1
Automatic transmission fluid temperature
warning light (four −wheel drive models)∗
1
SRS warning light∗1
Open door warning light∗1
Low windshield washer fluid level warning
light∗1
Front passenger ’s seat belt reminder light∗1
Vehicle stability control system/traction control
system (two −wheel drive models) or active
traction control system (four −wheel drive
models) warning light
∗ 1
Tire pressure warning light∗1
Engine oil replacement reminder light∗1
Indicator symbols on the instrument panel

112007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
Automatic transmission indicator lights
Traction control system off indicator light
(two−wheel drive models)
Vehicle stability control system off indicator light
(four −wheel drive models)
Slip indicator light
Headlight high beam indicator light Overdrive
−off indicator light
Turn signal indicator lights
Engine immobilizer/theft deterrent system
indicator light
Front passenger occupant classification
indicator light
Roll sensing of curtain shield airbags off
indicator light
Headlight low beam indicator light
Tail light indicator lightLow speed four −wheel drive indicator light∗
2
High speed four −wheel drive indicator light∗
2
Center differential lock indicator light∗2
(four −wheel drive models)

1692007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
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 “Emissions Inspection and
Maintenance (I/M) programs” on page 424
in Section 6.
(f) Low Fuel Level Warning Light
This light comes on when the fuel level
in the tank becomes nearly empty. Fill up
the tank as soon as possible.
On inclines or curves, due to the move-
ment of fuel in the tank, the low fuel level
warning light may come on earlier than
usual. (g) “ABS” Warning Light
The light comes on when the ignition key
is turned to the “ON” position. If the anti
−
lock brake system and the brake assist
system work properly, the light turns off
after a few seconds. Thereafter, if either
of the systems malfunctions, the light
comes on again.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system, the brake assist
system, the traction control system (two −
wheel drive vehicles), the active traction
control system (four −wheel drive vehicles)
and the vehicle stability control system do
not operate, but the brake system still
operates conventionally.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system does not operate
so that the wheels could lock up during
a sudden braking or braking on slippery
road surfaces. If either of the following conditions
occurs, this indicates a malfunction
somewhere in the components moni-
tored by the warning light system. Con-
tact your Toyota dealer as soon as
possible to service the vehicle.The light does not come on when the
ignition key is turned to the “ON” posi-
tion, or remains on.
The light comes on while you are dri-
ving.
A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If the “ABS” warning light remains on
together with the brake system warn-
ing light, immediately stop your ve-
hicle at a safe place and contact your
Toyota dealer.
In this case, not only the antilock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.

1702007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
(h) “VSC TRAC” Warning Light
This light warns that there is a problem
somewhere in the vehicle stability control
system and traction control system (two−
wheel drive models) or active traction con-
trol system (four −wheel drive models).
The 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.
(i) Open Door Warning Light
This light remains on until all the side
doors and back door are completely
closed. (j) SRS Warning Light
This indicator comes on when the igni-
tion key is turned to the “ON” position.
It goes off after about 6 seconds. This
means the SRS airbags and front seat
belt pretensioners are operating proper-
ly.
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sen-
sors, curtain shield airbag sensors, driv-
er ’s seat position sensor, driver ’s seat belt
buckle switch, front passenger occupant
classification system and indicator light,
front passenger ’s seat belt buckle switch,
seat belt pretensioner assemblies, inflat-
ors, “RSCA OFF” indicator light, intercon-
necting wiring and power sources.
If any of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.
The light does not come on when the
ignition key is turned to the “ON” posi-
tion or remains on for more than 6
seconds.
The light comes on or starts flashing
while driving.The SRS warning light will come on and
front passenger occupant classification in-
dicator light will indicate “OFF” if there is
a malfunction in the front passenger occu-
pant classification system.
(k) Automatic Transmission Fluid Tem-
perature Warning Light (fourwheel
drive models)
This light warns that the automatic trans-
mission fluid temperature is too high.
If this light comes on while you are driv-
ing, slow down and pull off the road. Stop
the vehicle at a safe place and put the
selector lever in “P”. With the engine id-
ling, wait until the light goes off. If the
light goes off, you may start the vehicle
again. If the light does not go off, call a
Toyota dealer or qualified repair shop for
assistance.
NOTICE
Continued driving with the warning
light on may damage the automatic
transmission.

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OPERATION OF INSTRUMENTS AND
CONTROLS
Ignition switch, Transmission and Parking brake
Ignition switch174
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
Automatic transmission 175
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
Four −wheel drive system 179
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
Traction control system 184
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
Active traction control system 186
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle stability control system 188
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear height control air suspension 191
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire pressure warning system 200
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking brake 207
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Cruise control 208
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
SECTION 1 7

1802007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
Use the front drive control switches
and center differential lock switch to
select the transfer and center differen-
tial modes.
In the “4HI” and “4LO” mode, you can
choose to lock or unlock the center differ-
ential.
Use the center differential lock system if
your wheels get stuck in a ditch, or when
you are driving on a slippery or bumpy
surface. When the center differential is
locked, the vehicle stability control system
is automatically turned off and the center
differential lock and “VSC OFF” indicator
lights come on because the function that
controls engine performance interferes
with the process of freeing your wheels.
NOTICE
As soon as the center differential lock
switch is turned on, the “VSC OFF”
indicator light comes on. After the
wheels are out of the ditch or off the
slippery or bumpy surface, turn the
center differential lock switch off.
Make sure that the center differential
lock indicator light and “VSC OFF”
indicator light turn off.
“2WD” mode (high speed, twowheel
drive)
This mode is the normal driving mode. In
this mode, the “4HI” and “4LO” indicator
lights are turned off.
Use this for normal driving on dry hard−
surfaced roads. This position gives greater
economy, quietest ride, least wear and
better vehicle control.
“4HI” mode (high speed, fourwheel
drive, center differential unlocked)
To select this mode, press the “2WD/4HI”
switch only. The “4HI” indicator light
comes on.
Use this for greater traction than two−
wheel drive. (When you experience a loss
of power, such as wheel slipping.) This
position provides greater traction than
two −wheel drive. “4HI” mode (high speed, fourwheel
drive, center differential locked)
To select this mode, press the “2WD/4HI”
switch, and then the center differential
lock switch. The “4HI” and the center dif-
ferential lock indicator lights come on.
Use this for greater traction when you
experience a loss of power, such as
wheel slipping, in the center differential
unlock mode.
“4LO” mode (low speed, fourwheel
drive, center differential unlocked)
To select this mode, press the “4LO”
switch only. The “4LO” indicator light
comes on.
Use this for maximum power and traction.
Use this for climbing steep hills, off
−road
driving, and hard pulling in sand or mud.
In this mode, the braking feeling that oc-
curs when the wheels are negotiating a
sharp corner is further reduced than in the
“4LO” (low speed, four −wheel drive, center
differential locked) mode.

1812007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
“4LO” mode (low speed, fourwheel
drive, center differential locked)
To select this mode, press the “4LO”
switch, and then press the center differen-
tial lock switch. The “4LO” and the center
differential lock indicator lights come on.
Use this for maximum power and traction.
Use this for hard pulling in situations the
vehicle cannot negotiate even in “4LO”
(low speed, four−wheel drive, center differ-
ential unlocked) mode. Also, using this
mode when driving down steep off −road
inclines will help contribute to increased
vehicle stability.
The indicator light tells when the differen-
tial lock is engaged. Note that the differ-
ential is not still locked as long as the
indicator light remains off.
When the operation is not completed, the
indicator blinks. If the indicator light does
not go off when you push out the center
differential lock switch, drive straight
ahead while accelerating or decelerating,
or drive in reverse.
If the center differential lock system op-
eration is not completed within 5 seconds
while the cruise control system is set,
cancel the cruise control system. To can-
cel the cruise control system, see “Cruise
control” on page 208 in Section 1 −7. If the indicator blinks even if doing so,
contact your Toyota dealer as soon as
possible. There may be a trouble in the
center differential lock system.
See “(c) Shifting procedure” for further in-
structions.
Advice for driving on slippery roads in
“4LO” (low speed, fourwheel drive)
mode
If you press the “4LO” switch and shift
the automatic transmission lever to “2”
when you drive in steep off
−road areas,
the output of the brake can be controlled
effectively by the active traction control
system, which assists the driver to control
the driving power of 4 wheels.
Use the “L” position of the automatic
transmission for maximum power and trac-
tion when your wheels get stuck or when
you drive down a steep incline. The output
of the brake can be controlled by the
active traction control system if the engine
speed is under 3000 rpm (normally engine
speed is under 3000 rpm when the wheels
get unstuck), in the following cases:
The front drive control in “4LO” mode
and the automatic transmission in “L”
or the automatic transmission in “D”,
“3” or “2” with the transmission down-
shifting to the first gear
The front drive control in “4LO” mode
and the automatic transmission in “R”
(As for the automatic transmission shift
positions, see “Automatic transmission” on
page 175 in this Section.)

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.
u16030
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)