traction control TOYOTA SEQUOIA 2004 1.G Owners Manual

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Spark ignition system of yourTo y o t a
The spark ignition system in your Toyota meets all re-
quirements of the Canadian Interference −Causing Equip-
ment Standard.
Installation of a mobile twoway 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, SRS airbag system and seat belt
pretensioner system, be sure to check with your Toyota
dealer for precautionary measures or special instructions
regarding installation.
Tires and loading on your To y o t a
Underinflated or overinflated tire pressure and the
excess load may result in the deterioration of
steering ability and braking ability, leading to an
accident. Check the tire inflation pressure periodi-
cally 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 375 and 305.

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or
Driver ’s seat belt reminder light∗1
Discharge 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∗1
SRS warning light∗1
Unengaged “Park” 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
Engine immobilizer/theft deterrent system
indicator light
Indicator symbols on the instrument panel

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Cruise control indicator light∗2 ∗
1
: For details, see “Service reminder indicators and warning
buzzers” on page 134 in Section 1 −6.
∗
2: If this light flashes, see “Cruise control” on page 159 in
Section 1 −7.
Four −wheel drive and center differential lock
indicator lights
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

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(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.
(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.

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OPERATION OF INSTRUMENTS AND
CONTROLS
Ignition switch, Transmission and Parking brake
Ignition switch with steering lock142
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic transmission 143
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
Four −wheel drive system 147
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
Traction control system 151
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
Active traction control system 154
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle stability control system 156
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking brake 158
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Cruise control 159
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
SECTION 1 7

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“H” mode (high speed position, two
wheel drive): Front drive control lever at
“H”, “4WD” switch left out
Use this for normal driving on dry hard −
surfaced roads. This position gives greater
economy, quietest ride and least wear and
better vehicle control.
“H” mode (high speed position, four
wheel drive, center differential un-
locked): Front drive control lever at “H”,
“4WD” switch pushed once, center differ-
ential lock switch left out
Use this for normal driving on all types of
roads, from dry hard −surfaced roads to
wet, icy or snow −covered roads. This
position provides greater traction than
two −wheel drive.
“H” mode (high speed position, four
wheel drive, center differential locked):
Front drive control lever at “H”, “4WD”
button pushed once center differential lock
switch pushed once
Use this for greater traction when you
experience a loss of power, such as
wheel slipping, in the center differential
unlock mode.
“N” mode (neutral position): Front drive
control lever at “N”
No power is delivered to the wheels. The
vehicle must be stopped. “L4” mode (low speed position, four
wheel drive, center differential un-
locked):
Front drive control lever at “L4”,
center differential lock switch left out
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
“L4” (low position, four −wheel drive, center
differential locked) mode.
If you place the transmission shift lever at
“2” in this mode, the transmission auto-
matically shifts up from second gear. This
system is effective when starting your ve-
hicle in sand, mud, ice or snow. (Howev-
er, the transmission system may shift up
from first gear when the vehicle starts too
quickly.) “L4” mode (low speed position, four
wheel drive, center differential locked):
Front drive control lever at “L4”, center
differential lock switch pushed once
Use this for maximum power and traction.
Use this for hard pulling in situations the
vehicle cannot negotiate even in the “L4”
(low speed position, four
−wheel drive, cen-
ter differential unlocked) mode. Also, using
this mode when driving down steep off −
road inclines will help contribute to in-
creased vehicle stability.
The indicator shows which transfer and
center differential mode the vehicle is in.
When the shifting operation has not been
completed after moving the lever, the
indicator flashes. 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 indicator flashes
even if doing so, contact your Toyota
dealer as soon as possible. There may be
a trouble in the four wheel drive system.
See “(c) Shifting procedure” for further in-
structions.

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Advice for driving on slippery roads in
“L4” (low speed position) mode
If you shift the front drive control lever to
“L4” and 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 lever for maximum power
and traction when your wheels get stuck
or when you drive down a steep incline.
In the following cases, the output of the
brake can be controlled by the active trac-
tion control system if the engine speed is
under 3000 rpm (normally engine speed is
under 3000 rpm when the wheels get un-
stuck).
The front drive control lever in the “L4”
position and the automatic transmission
lever in the “L” position or the automat-
ic transmission lever in the “D” or “2”
with the transmission downshifting to
the first gear
The front drive control lever in the “L4”
position and the automatic transmission
lever in the “R” position (As for the automatic transmission lever
positions, see “Automatic transmission” in
this Section.)
The A.D.D. can be engaged or disen-
gaged by the shifting operations des-
cribed in “(c) Shifting procedure”.
You should drive in four
−wheel drive for
at least 16 km (10 miles) each month.
This will assure that the front drive com-
ponents are lubricated.
(b) A.D.D. (automatic
disconnecting differential)

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NOTICE
Do not drive on a dry paved surface
in “L4” (LOCKED) mode. This may
damage the locking mechanism and
the drive system.
SHIFTING BETWEEN “L4” (UNLOCKED)
AND “L4” (LOCKED)
To shift between unlock and lock
modes in “L”, push the center differential
lock switch.
This can be done at any vehicle speed.
If the indicator light flashes when you
push the center differential lock switch,
drive straight ahead while accelerating or
decelerating.
CAUTION
Never push the center differential
lock switch if wheels are slipping.
Stop the slipping or spinning before
shifting.
NOTICE
Do not drive on a dry paved surface
in “L4” (LOCKED) mode. This may
damage the locking mechanism and
the drive system.
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.
Traction control system
(twowheel drive models)

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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 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.

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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.
“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.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.