Toyota Sequoia (2018 year). Instruction

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●

Instances of the RCTA function unnecessarily detecting a vehicle and/or
object may increase in the following situations:

• When a vehicle passes by the side of your vehicle

• When the distance between your vehicle and metal objects, such as a

guardrail, wall, sign, or parked vehicle, which may reflect electrical waves
toward the rear of the vehicle, is short

• When the parking space faces a

street and vehicles are being driven
on the street

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Electronically modulated air suspension

∗

Height control switch

Height control mode select
switch

Operating the switch change vehicle rear height as follows:

Higher

Lower

Vehicle height can be adjusted
only when the engine is running.

The selected height mode will be
shown on the electronically modu-
lated air suspension display.

The selected mode will flash while
the height mode is being change.

∗

: If equipped

The electronically modulated air suspension allows the driver to
control the vehicle’s height in order to adjust for driving condi-
tions.
Select the desired height with the height control switch.

Height control switch

Selecting vehicle height

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Height modes

● “N” mode (normal mode): For ordinary driving

Normal height

● “HI” mode (high mode): For driving on bumpy roads 1.2 in. (30 mm)

higher than the normal height

The “HI” mode is unavailable when the vehicle’s speed exceeds
18 mph (30 km/h).

When the vehicle’s speed exceeds 18 mph (30 km/h), the height
will be adjusted to the normal height automatically.

● “LO” mode (low mode): For the ease of egress/ingress and loading

luggage

1.2 in. (30 mm) lower than the normal height

The “LO” mode is unavailable when the vehicle’s speed exceeds
8 mph (12 km/h).

When the vehicles speed exceeds 8 mph (12 km/h), the height will
be adjusted to the normal height automatically.

When the height control mode
select switch is pressed, the vehi-
cle height is fixed at the current
height.

The “OFF” indicator is displayed on
the multi-information display and
the automatic leveling function
turned off.

The height can be adjusted by
pressing the height control switch.

Press the switch again or when the vehicle’s speed exceeds 18 mph
(30 km/h), the height will be adjusted to the normal height automatically.

Disabling the height control

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■

Automatic leveling function
Regardless of the number of occupants or the luggage load, vehicle height in
any mode is always adjusted to a fixed height by the automatic leveling func-
tion.

■

When “HI” mode is selected
The vehicle height will change to “N” mode when driving at the speeds of
18 mph (30 km/h).

■

When “LO” mode is selected

●

The vehicle height will change to “N” mode when vehicle speed exceeds
7 mph (12 km/h).

●

This mode allows for easy access to the vehicle (getting in and out) and
easy loading and unloading.

■

The electronically modulated air suspension will not operate in the fol-
lowing cases:

●

The underbody of the vehicle is touching the surface of the road.

●

The area around the suspension is covered with ice.

The height control indicators will blink, turn off and then turn on continuously
to indicate that the electronically modulated air suspension is not operational.
To re-enable operation, turn off the engine and then restart it.

■

Even if you hear an operating noise
This does not indicate a problem in the electronically modulated air suspen-
sion.

■

The electronically modulated air suspension failure warning
The warning message is displayed on the multi-information display, and the
electronically modulated air suspension cannot be activated until the malfunc-
tion is corrected.
Stop the engine and start again. If the warning message turns off, the system
operating correctly. If the warning message continues to be displayed, have
your vehicle inspected by your Toyota dealer as soon as possible.

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WARNING

■

The electronically modulated air suspension must be turned off in the
following circumstances:
Otherwise, the automatic leveling function may cause the vehicle’s height to
change, and you may catch part of your body in the vehicle, resulting in an
unexpected accident:

●

When driving through water such as shallow streams (Put the vehicle
height in “HI” mode and turn off the electronically modulated air suspen-
sion. Drive at 18 mph [30 km/h] or slower.)

●

When jacking up the vehicle, installing tire chains or tying the vehicle with
chains/wires for transportation via flat bed truck (Turn the system to the
manual mode and stop the engine.)

●

When the vehicle must be towed (Put the vehicle height in “N” mode and
turn the system to the manual mode.)

●

When the vehicle gets stuck (Turn the system to the manual mode.)

●

When disconnecting a trailer (Put the vehicle height in “N” mode and turn
the system to the manual mode.)

■

Selecting the correct height mode
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the vehicle, as well as dan-
gerous handling characteristics, which may lead to fatal or injury accidents.

●

Before you lower the vehicle’s height, check under the vehicle to make
sure that no one is there.

●

“HI” mode should only be used when driving on rough roads, for example
when driving off-road.
Because the vehicle’s center of gravity will become higher when in the
mode, the vehicle may become unstable when turning abruptly, resulting
in an accident.

●

Do not select “HI” mode when you load cargo on the roof luggage carrier.
Because the vehicle’s center of gravity will become higher when in the
mode, the vehicle may become unstable when turning abruptly, resulting
in an accident.

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NOTICE

■

Be careful in any place where overhead space is limited.
When changing to a higher mode or after unloading, the vehicle height will
rise. This may cause damage to the vehicle.

■

Do not select “LO” mode when driving on bumpy roads.
If the underbody of the vehicle touches a rugged road surface, the vehicle
may be damaged.

■

Do not change the vehicle height frequently.
The compressor might overheat and cause the operation to stop.

■

When on the extremely uneven roads with rocks
Sometimes the vehicle height is not adjusted because it is judged as
uneven road driving.

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AVS (Adaptive Variable Suspension System)

∗

Sport mode

For winding mountain road driving

or high speed driving.

Normal mode

For ordinary driving.

Comfort mode

For driving on a bumpy road.

■

Driving mode

●

Sport mode is suitable for winding mountain road driving, high speed driving
or towing a trailer.

●

Normal mode is suitable for ordinary driving.

∗

: If equipped

AVS controls the suspension according to the road and driving condi-

tions. Selecting an optimum driving mode allows good vehicle posture

and steering wheel operation.

AVS switch

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Four-wheel drive system

“2WD” (high speed position, two-wheel drive)

Use this for normal driving on dry hard-surfaced roads. This position gives
greater economy, quietest ride and least wear.

“4H” (high speed position, four-wheel drive)

Use this for driving only on tracks that permit the tires slide, like off-road,
icy or snow-covered roads. This position provides greater traction than
two-wheel drive.

The “4HI” indicator will come on.

“4L” (low speed position, four-wheel drive)

Use this for maximum power and traction. Use “4L” for climbing or
descending steep hills, off-road driving, and hard pulling in sand, mud or
deep snow.

The “4LO” indicator will come on.

Center differential lock switch (

→P. 297)

Indicators

Use the front-wheel drive control lever or switch to select the fol-
lowing transfer modes:

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Shifting from “2WD” to “4H”

Reduce vehicle speed to less than 62 mph (100 km/h).

Turn the front-wheel drive control switch to “4H”.

The “4HI” indicator will turn on.

■

Shifting from “4H” to “2WD”

Reduce vehicle speed to less than 62 mph (100 km/h).

Turn the front-wheel drive control switch to “2WD”.

The “4HI” indicator will go off.

■

Shifting from “4H” to “4L”

Stop the vehicle completely and continue to depress the brake
pedal.

Shift the shift lever to N.

Push and turn the front-wheel drive control switch to “4L”.

The “4LO” indicator will turn on.

■

Shifting from “4L” to “4H”

Stop the vehicle completely and continue to depress the brake
pedal.

Shift the shift lever to N.

Turn the front-wheel drive control switch to “4H”.

The “4LO” indicator will go off.

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.

Unlock the center differential after
the wheels have been freed, or
after moving to a flat, non-slippery
surface.

Shifting between “2WD” and “4H”

Shifting between “4H” and “4L”

Center differential lock switch

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Shifting between “2WD” and “4H”

●

When the ambient temperature is 5.0 °F (-15 °C) or lower, shifting from
“2WD” to “4H” cannot be performed with the vehicle speed above 43 mph
(70 km/h).

●

If the “4HI” indicator does not go off when you shift from “4H” to “2WD”, drive
straight ahead while accelerating or decelerating, or drive in reverse.

■

Front-wheel drive usage frequency
You should drive in front-wheel drive for at least 10 miles (16 km) each
month.

This will assure that the front drive components are lubricated.

■

The center differential lock switch can be operated when

●

The front-wheel drive control switch is in the “4H” or “4L” position.

●

The vehicle speed is less than 62 mph (100 km/h)

■

Center differential lock system

●

When the front-wheel drive control switch is in the “4L” position and the cen-
ter differential is locked, the VSC is automatically turned off.

●

When the front-wheel drive control switch is turned to the “2WD” position,
the center differential is automatically unlocked.

●

If the operation is not completed, the center differential lock indicator blinks.
If the indicator does not go off when unlocking the center differential, drive
straight ahead while accelerating or decelerating, or drive in reverse.

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If the “4LO” indicator, “4HI” indicator or the center differential lock indi-
cator blinks

●

If the “4LO” indicator continues to blink when shifting between “4H” and “4L”,
stop the vehicle completely, move the shift lever to N and operate the switch
again.

●

If the shift lever is moved before the “4LO” indicator turns on/off, the transfer
mode may not be shifted completely. The transfer mode disengages both
the front and rear driveshafts from the powertrain and allows the vehicle to
move regardless of the shift position. (At this time, the indicator blinks and
the buzzer sounds.)

Therefore, the vehicle is free to roll even if the automatic transmission is in
P. You or someone else could be seriously injured. You must complete the
shifting of the transfer mode.

To complete the shifting, stop the vehicle completely, return the shift lever to
N, and confirm that the shift was completed (The indicator turns on/off).

●

If the engine coolant temperature is too low, transfer mode may not be able
to shift. When the engine is warmer, turn the switch again.

If the “4LO” indicator, “4HI” indicator or the center differential lock indicator
continues to blink even after attempting the above, there may be a malfunc-
tion in the engine, the brake system or the four-wheel drive system. In this
case, you may not be able to shift between “2WD” and “4H”, “4H” and “4L”,
and the center differential lock may not be operable. Have the vehicle
inspected by your Toyota dealer immediately.

■

Shifting to the “4L” position
The VSC off indicator will come on.
If the center differential is locked, VSC is automatically turned off.

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WARNING

■

Shifting the front-wheel drive control switch from “2WD” to “4H” while
driving
Never operate the front-wheel drive control switch if the wheels are slipping.
Stop the slipping or spinning before shifting.

■

When the vehicle is parked
If the shift lever is moved before the “4LO” indicator turns on/off, the transfer
mode may not be shifted completely. The transfer mode disengages both
the front and rear driveshafts from the powertrain and allows the vehicle to
move regardless of the shift position. (At this time, the indicator blinks and
the buzzer sounds.)

Therefore, the vehicle is free to roll even if the automatic transmission is in
P. You or someone else could be seriously injured. You must complete the
shifting of the transfer mode before placing transmission in P. (

→P. 299)

NOTICE

■

To prevent damage to the center differential

●

For normal driving on dry and hard surface roads, unlock the center differ-
ential.

●

Unlock the center differential after the wheels are out of the ditch or off the
loose or bumpy surface.

●

Do not push the center differential lock switch when the vehicle is corner-
ing or when its wheels are spinning freely off the ground.

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AUTO LSD system

The system can be used on 2WD models and in 2WD mode on 4WD
models.

The system is activated when driving at a speed under 62 mph
(100 km/h).

The AUTO LSD system will be activated with the following two proce-
dures.

■

TRAC off mode

Press

briefly to turn on the

system. The “AUTO LSD” indi-
cator will come on.

To turn off the system, press
again.

■

AUTO LSD mode

Stop the vehicle completely,

and press

for more than 3

seconds. The “AUTO LSD” and
VSC off indicators will come on.

To turn off the system, press

again.

The AUTO LSD system aids traction by using the traction con-
trol system to control engine performance and braking when
one of the drive wheels begins to spin.

The system should be used only when one of the drive wheels
spinning occurs in a ditch or rough surface.

System operation

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If the engine is turned off and restarted
The AUTO LSD system and the indicators are automatically turned off.

■

Reactivation of the VSC system linked to vehicle speed
When the AUTO LSD system is turned on, the VSC and TRAC systems will
turn on automatically if vehicle speed increase.

■

If the brake system overheats
The system will cease operation and a buzzer will alert the driver. At this time,
the “TRAC OFF” indicator will come on. Stop the vehicle in a safe place.
(There is no problem with continuing normal driving.) The system will be auto-
matically restored after a short time.

WARNING

■

To avoid an accident
Failure to do so, a much greater steering effort and more careful cornering
control will be required.

●

Do not use the AUTO LSD system in conditions other than when one of
the drive wheels spinning occurs in a ditch or rough surface.

●

Do not drive with the AUTO LSD system continuously turned on.

NOTICE

■

Activating while driving
Do not activate the AUTO LSD system if the wheel is slipping. Stop the slip-
ping or spinning before activating.

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Driving assist systems

◆

ABS (Anti-lock Brake System)

Helps to prevent wheel lock when the brakes are applied suddenly,
or if the brakes are applied while driving on a slippery road surface

◆

Brake assist

Generates an increased level of braking force after the brake pedal
is depressed when the system detects a panic stop situation

◆

VSC (Vehicle Stability Control)

Helps the driver to control skidding when swerving suddenly or
turning on slippery road surfaces

◆

Trailer Sway Control

Helps the driver to control trailer sway by selectively applying brake
pressure for individual wheels and reducing driving torque when
trailer sway is detected.

◆

TRAC (Traction Control)

Helps to maintain drive power and prevent the drive wheels from
spinning when starting the vehicle or accelerating on slippery roads

◆

Hill-start assist control

Helps to reduce the backward movement of the vehicle when start-
ing on an uphill

To keep driving safety and performance, the following systems
operate automatically in response to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavily when operating the vehi-
cle.

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The slip indicator will flash while
the TRAC/VSC/Trailer Sway Con-
trol systems are operating.

If the vehicle gets stuck in mud, dirt or snow, the TRAC system may

reduce power from the engine to the wheels. Pressing

to turn the

system off may make it easier for you to rock the vehicle in order to
free it.



2WD models and 2WD mode on 4WD models

To turn the TRAC system off,

quickly press and release

The “AUTO LSD” indicator light
will come on.

Press

again to turn the sys-

tem back on.

When the TRAC/VSC/Trailer Sway control systems are operating

Disabling the TRAC system

Toyota Sequoia (2018 year). Instruction - part 19