Toyota Tundra (2019 year). Manual

289

The Blind Spot Monitor function uses radar sensors to detect vehicles
that are traveling in an adjacent lane in the area that is not reflected in
the outside rear view mirror (the blind spot), and advises the driver of
the vehicles existence via the outside rear view mirror indicator.

The areas that vehicles can be detected in are outlined below.
The range of the detection area
extends to:

Approximately 11.5 ft. (3.5 m)
from the side of the vehicle

The first 1.6 ft. (0.5 m) from the
side of the vehicle is not in the
detection area

Approximately 9.8 ft. (3 m) from
the rear bumper
Approximately 3.3 ft. (1 m) for-
ward of the rear bumper

The Blind Spot Monitor function

The Blind Spot Monitor function detection areas

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4-5. Using the driving support systems

■

The Blind Spot Monitor function is operational when

●

The BSM function is set to on.

●

Vehicle speed is greater than approximately 25 mph (40 km/h).

■

The Blind Spot Monitor function will detect a vehicle when

●

A vehicle in an adjacent lane overtakes the vehicle.

●

Another vehicle enters the detection area when it changes lanes.

●

You overtake a vehicle in adjacent lane.

■

Conditions under which the Blind Spot Monitor function will not detect a
vehicle
The Blind Spot Monitor function is not designed to detect the following types
of vehicles and/or objects:

●

Small motorcycles, bicycles, pedestrians, etc.

●

Vehicles traveling in the opposite direction

●

Guardrails, walls, signs, parked vehicles and similar stationary objects

●

Following vehicles that are in the same lane

●

Vehicles driving 2 lanes across from your vehicle

●

Vehicles which are being overtaken rapidly by your vehicle.

: Depending on conditions, detection of a vehicle and/or object may occur

WARNING

■

Cautions regarding the use of the system
The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
The Blind Spot Monitor function is a supplementary function which alerts the
driver that a vehicle is present in the blind spot. Do not overly rely on the
Blind Spot Monitor function. The function cannot judge if it is safe to change
lanes, therefore over reliance could cause an accident resulting in death or
serious injury.
According to conditions, the system may not function correctly. Therefore
the driver’s own visual confirmation of safety is necessary.

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■

Conditions under which the Blind Spot Monitor function may not func-
tion correctly

●

The Blind Spot Monitor function may not detect vehicles correctly in the fol-
lowing conditions:
• During bad weather such as heavy rain, fog, snow, etc.
• When ice or mud, etc., is attached to the rear bumper
• When driving on a road surface that is wet due to rain, standing water,

etc.

• When there is a significant difference in speed between your vehicle and

the vehicle that enters the detection area

• When a vehicle is in the detection area from a stop and remains in the

detection area as your vehicle accelerates

• When driving up or down consecutive steep inclines, such as hills, a dip

in the road, etc.

• When multiple vehicles approach with only a small gap between each

vehicle

• When vehicle lanes are wide, and the vehicle in the next lane is too far

away from your vehicle

• When the vehicle that enters the detection area is traveling at about the

same speed as your vehicle

• When towing anything such as trailer, boat, etc.
• When there is a significant difference in height between your vehicle and

the vehicle that enters the detection area

• Directly after the BSM function is set to on
• When towing a trailer
• When items such as a bicycle carrier are installed on the rear of the vehi-

cle

●

Instances of the Blind Spot Monitor function unnecessarily detecting a vehi-
cle and/or object may increase under the following conditions:
• When there is only a short distance between your vehicle and a guardrail,

wall, etc.

• When there is only a short distance between your vehicle and a following

vehicle

• When vehicle lanes are narrow and a vehicle driving 2 lanes across from

your vehicle enters the detection area

• When items such as a bicycle carrier are installed on the rear of the vehi-

cle

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4-5. Using the driving support systems

The Rear Cross Traffic Alert functions when your vehicle is in reverse.
It can detect other vehicles approaching from the right or left rear of
the vehicle. It uses radar sensors to alert the driver of the other vehi-
cle’s existence through flashing the outside rear view mirror indicators
and sounding a buzzer.

The Rear Cross Traffic Alert function

Approaching vehicles

Detection areas

WARNING

■

Cautions regarding the use of the system
The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
The Rear Cross Traffic Alert function is only an assist and is not a replace-
ment  for  careful  driving.  Driver  must  be  careful  when  backing  up,  even
when using Rear Cross Traffic Alert function. The driver’s own visual confir-
mation of behind you and your vehicle is necessary and be sure there are
no  pedestrians,  other  vehicles,  etc.,  before  backing  up.  Failure  to  do  so
could cause death or serious injury.
According  to  conditions,  the  system  may  not  function  correctly. Therefore
the driver’s own visual confirmation of safety is necessary.

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4-5. Using the driving support systems

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The areas that vehicles can be detected in are outlined below.

To give the driver a more consistent time to react, the buzzer can alert
for faster vehicles from farther away.
Example:

■

The Rear Cross Traffic Alert function is operational when

●

The RCTA function is set to on.

●

The shift lever is in R.

●

Vehicle speed is less than approximately 5 mph (8 km/h).

●

Approaching vehicle speed is between approximately 5 mph (8 km/h) and
18 mph (28 km/h).

The Rear Cross Traffic Alert function detection areas

Approaching vehicle

Speed

Approximate

alert distance

Fast

18 mph (28 km/h)

65 ft. (20 m)

Slow

5 mph (8 km/h)

18 ft. (5.5 m)

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4-5. Using the driving support systems

■

Conditions under which the Rear Cross Traffic Alert function will not
detect a vehicle
The Rear Cross Traffic Alert function is not designed to detect the following
types of vehicles and/or objects.

●

Small motorcycles, bicycles, pedestrians, etc.

●

Vehicles approaching from directly behind

●

Guardrails, walls, signs, parked vehicles and similar stationary objects

●

Vehicles moving away from your vehicle

●

Vehicles approaching from the parking spaces next to your vehicle

●

Vehicles backing up in the parking space next to your vehicle

: Depending on conditions, detection of a vehicle and/or object may occur.

■

Conditions under which the Rear Cross Traffic Alert function may not
function correctly
The Rear Cross Traffic Alert function may not detect vehicles correctly in the
following conditions.

●

When ice or mud, etc., is attached to the rear bumper

●

During bad weather such as heavy rain, fog, snow, etc.

●

When multiple vehicles approach continuously

●

Shallow angle parking

●

When a vehicle is approaching at high speed

●

When parking on a steep incline, such as hills, a dip in the road, etc.

●

Directly after the RCTA function is set to on

●

Directly after the engine is started with the RCTA function is on

●

When towing a trailer

●

Vehicles that the sensors cannot detect
because of obstacles

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4-5. Using the driving support systems

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Four-wheel drive system



Use the front-wheel drive control switch to select the following transfer
modes:

“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.



: If equipped

Summary of functions

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4-5. Using the driving support systems

■

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 come 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 come on.

■

Shifting from “4L” to “4H”
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 “4H”.

The “4LO” indicator will go off.

Shifting between “2WD” and “4H”

Shifting between “4H” and “4L”

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■

When the front-wheel drive control switch is shifted to “4L”
VSC is automatically turned off.

■

If the “4HI” indicator flashes
The transfer mode may not successfully change. Drive straight ahead while
accelerating or decelerating, or drive in reverse.

■

If the “4LO” indicator continues to flash
The transfer mode may not successfully change. Operate the front-wheel
drive control switch again.

■

If the “4LO” indicator continues to flash and a buzzer sounds
The shift lever is not in N and/or the vehicle is moving. Stop the vehicle com-
pletely, shift the shift lever to N and make sure that the indicator stops flash-
ing.

■

If the “4HI” or “4LO” indicator flashes rapidly
There may be a malfunction in the four-wheel drive system. Have the vehicle
inspected by your Toyota dealer immediately.

■

Four-wheel drive usage frequency
You should drive in four-wheel drive for at least 10 miles (16 km) each month.
This will assure that the front drive components are lubricated.

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.

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4-5. Using the driving support systems

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 procedures.

Press the

briefly to turn on

the system.
The “AUTO LSD” indicator will
come on.

To turn off the system, press

again.
Stop the vehicle completely, and

press

for more than 3 sec-

onds.
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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4-5. Using the driving support systems

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■

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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4-5. Using the driving support systems

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) for 2WD models and 2WD mode on
4WD models

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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4-5. Using the driving support systems

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The slip indicator light will flash
while the TRAC/VSC/Trailer Sway
Control 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.

■

Turning off TRAC system



2WD models and 2WD mode on 4WD models

To turn the TRAC system off,

press

The “AUTO LSD” indicator light
will come on.

Press

again to turn the

system back on.

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

Disabling the TRAC systems

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4-5. Using the driving support systems



4H mode on 4WD models

To turn the TRAC system off,

press

The “TRAC OFF” indicator light
will come on.

Press

again to turn the

system back on.



4L mode on 4WD models

To turn the TRAC system off,

press and hold

for more

than 3 seconds while the vehi-
cle is stopped.
The VSC off and “TRAC OFF”
indicator light will come on.

Press

again to turn the

system back on.

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■

Turning off TRAC, VSC and Trailer Sway Control systems



2WD models and 2WD mode on 4WD models
To turn the TRAC, VSC and Trailer Sway Control systems off, stop the vehi-

cle completely, and then press and hold

for more than 3 seconds

while the AUTO LSD system is activated. (

P. 298)



4H mode on 4WD models
To turn the TRAC, VSC and Trailer Sway Control systems off, press and

hold

for more than 3 seconds while the vehicle is stopped.

The VSC off and “TRAC OFF” indicator light will come on.

Press

again to turn the system back on.

■

When the VSC or TRAC system is turned off by pressing the VSC off
switch
On vehicles with pre-collision system, pre-collision brake assist and pre-colli-
sion braking will also be disabled. The PCS warning light will come on and
the message will be shown on the multi-information display. (

P. 563)

■

When the “TRAC OFF” indicator light comes on even if VSC off switch
has not been pressed.
TRAC cannot be operated. Contact your Toyota dealer.

■

Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will
operate:

●

The shift lever is in a position other than P or N (when starting off forward/
backward on an upward incline)

●

The vehicle is stopped

●

The accelerator pedal is not depressed

●

The parking brake is not engaged

■

Automatic system cancelation of hill-start assist control
The hill-start assist control will turn off in any of the following situations:
The shift lever is shifted to P or N

●

The accelerator pedal is depressed

●

The parking brake is engaged

●

2 seconds at maximum elapsed after the brake pedal is released

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■

Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC,
Trailer Sway Control and hill-start assist control systems

●

A sound may be heard from the engine compartment when the brake pedal
is depressed repeatedly, when the engine is started or just after the vehicle
begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.

●

Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard also after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.

■

Automatic reactivation of TRAC, Trailer Sway Control and VSC systems
After turning the TRAC, Trailer Sway Control and VSC systems off, the sys-
tems will be automatically re-enabled in the following situations:

●

When the engine switch is turned off

●

If only the TRAC system is turned off, the TRAC will turn on when vehicle
speed increases

If both the TRAC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.

■

If the brake system overheats
TRAC will cease operation, and the slip indicator will change from flashing to
being on continuously to alert the driver. Stop the vehicle in a safe place.
(There is no problem with continuing normal driving.)

■

Shifting to “4L”
VSC and Trailer Sway Control are automatically turned off.

Toyota Tundra (2019 year). Manual - part 19