differential TOYOTA SEQUOIA 2005 1.G Owners Manual

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18. Height control mode select switch
19. Ashtray
20. Cigarette lighter
21. Front drive control switches
22. Center differential lock switch
23. Cruise control switch
24. Tire pressure warning system resetswitch
25. Audio remote control switches
26. Tilt steering lock release lever
27. Roll sensing of curtain shield airbag off switch
28. Instrument panel light control knob

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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)

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If the automatic unlocking operation linked
to shift lever position is set, all doors are
automatically unlocked when the selector
lever is moved to “P” position after the
ignition switch is turned to “ON” position.
For details, see “—Automatic door locking
and unlocking functions” on page 27 in
Section 1−2.
(i) Good driving practice
If the transmission repeatedly shifts up
and down between fourth gear and
overdrive when climbing a gentle slope,
the overdrive should be turned off. Be
sure to turn the switch on immediately
afterward.
When towing a trailer, in order to main-
tain engine braking efficiency, do not
use overdrive.
CAUTION
Always keep your foot on the brake
pedal while stopped with the engine
running. This prevents the vehicle
from creeping.
NOTICE
Always use the brake pedal or the
parking brake to hold the vehicle on
an upgrade. Do not attempt to hold
the vehicle using the accelerator ped-
al, as this can cause the transmission
to overheat.
Front drive control switches
Center differential lock switch
Fourwheel drive system—
(a) Front drive control

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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 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. “4HI” mode (high speed, fourwheel
drive, center differential locked)
To select this mode, press the “2DW/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.

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“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 205 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 173 in this Section.)

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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. SHIFTING BETWEEN “2WD” MODE AND
“4HI” MODE
To shift from “2WD” mode to “4HI”
mode,
reduce your speed to less than
100 km/h (62 mph) and press the
“2WD/4HI” switch.
If the “4HI” indicator light flashes when
you press the “2WD/4HI” switch, drive
straight ahead while accelerating or decel-
erating.
If the “4HI” indicator light flashes and the
buzzer sounds when you press the
“2WD/4HI” switch, reduce the vehicle
speed to less than 100 km/h (62 mph)
and press the switch again.
CAUTION
Never press the “2WD/4HI” switch if
wheels are slipping. Stop the slipping
or spinning before shifting.
To shift from “4HI” mode to “2WD”
mode, press the “2WD/4HI” switch again
to turn it off.
This can be done at any vehicle speed.
If the “4HI” indicator light flashes when
you press the “2WD/4HI” switch, drive
straight ahead while accelerating or decel-
erating, or drive in reverse.
SHIFTING BETWEEN “4HI” (UNLOCKED)
AND “4HI” (LOCKED)
To shift from “4HI” (UNLOCKED) to
“4HI” (LOCKED), press the center differ-
ential lock switch.
If the center differential lock indicator light
flashes when you press the center differ-
ential lock switch, drive straight ahead
while accelerating or decelerating.
CAUTION
Never press the center differential
lock switch if wheels are slipping.
Stop the slipping or spinning before
shifting.
(b) A.D.D. (automatic
disconnecting differential) (c) Shifting procedure

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NOTICE
Do not drive on a dry paved surface
in “4HI” (LOCKED) mode. This may
damage the locking mechanism and
the drive system.
To shift from “4HI” (LOCKED) to “4HI”
(UNLOCKED), press the center differential
lock switch again to turn off it.
This can be done at any vehicle speed.
If the center differential lock indicator light
flashes when you press the center differ-
ential lock switch, drive straight ahead
while accelerating or decelerating, or drive
in reverse.
SHIFTING BETWEEN “2WD” OR “4HI”
AND “4LO”
To shift between “2WD” or “4HI” mode and
“4LO” mode, stop the vehicle and put the
transmission in “N”. With your foot holding
down the brake pedal, press the “4LO”
switch. If the “4LO” indicator light flashes and the
buzzer sounds three times when you
press the “4LO” switch, stop the vehicle
completely, put the transmission securely
into “N” and press the switch again.
CAUTION
Never press the “4LO” switch if
wheels are slipping. Stop the slipping
or spinning before shifting.
NOTICE
Do not drive on a dry paved surface
in “4LO” (LOCKED) mode. This may
damage the locking mechanism and
the drive system.
SHIFTING BETWEEN “4LO”
(UNLOCKED) AND “4LO” (LOCKED)
To shift between “4LO” (UNLOCKED)
mode and “4LO” (LOCKED) mode,
press
the center differential lock switch.
This can be done at any vehicle speed.
If the center differential lock indicator light
flashes when you press the center differ-
ential lock switch, drive straight ahead
while accelerating or decelerating.
CAUTION
Never press 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 “4LO” (LOCKED) mode. This may
damage the locking mechanism and
the drive system.

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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 “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.
This vehicle stability control activates
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

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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 434 in Section 72.)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.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”.

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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.
“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.