2023 TOYOTA BZ4X Owners Manual

3855-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
assist control.
• When the system is not operating, the indicator turns on white.
■When Downhill Assist Control
is not available when selecting
“X-MODE”
In the following cases, the system
does not operate.
• When SNOW/DIRT mode or D.SNOW/MUD mode is not
selected
• When the shift position is in P
• When the Grip Control is operat- ing
• When the brake system or EV system is malfunctioning
With SNOW/DIRT mode or
D.SNOW/MUD mode selected,
press down on the Grip Control
switch.
At this time, the downhill assist
control system indicator turns off
and the Grip Control indicator
turns on.
When the vehicle is stopped,
press the brake pedal firmly and
operate the switch. The vehicle
may start moving unintentionally
on an incline.
■Set the speed of the Grip
Control
Press the Grip Control switch up
or down to set the desired
speed (approximately 2 to 6
mph [2 to 10 km/h]). The set
speed is shown on the multi-
information display. Increase Speed
Decrease Speed
Indicator Lights
■Grip Control Operations
During system operations, the
Grip Control indicator turns on
green. If the Grip Control indica-
tor is white, release the brake
pedal to activate the system.
While the system is operating,
the accelerator pedal and brake
pedal can be used to temporar-
ily accelerate or decelerate. If
operating the accelerator pedal
or brake pedal is stopped, the
speed will return to the set
speed.
■When Grip Control is
released
• Press the “X-MODE” Switch
When the Grip Control is released,
the Grip Control operation light
turns off, and af ter a while, the
downhill assist control system indi-
cator light turns on.
When using Grip Control

3865-4. Using the driving support systems
Owners Manual_USA_M42C01_enDrive carefully when releasing Grip
Control while driving.
■Grip Control Operations Condi-
tions
• When in “X-MODE”
• When the shift position is in D
• When the parking brake has been released
• When the driver side door is closed
• When the vehicle is stopped by stepping on the brake or the vehi-
cle speed is approximately 2 to 6
mph [2 to 10 km/h]
■Automatic Releasing the Grip
Control
In case of any of the following, the
Grip Control is released.
• When the vehicle is stopped by stepping on the brake pedal
• When the vehicle speed exceeds more than 13 mph (20 km/h)
• When the shift position in a posi- tion other than D
• When the parking brake is oper- ated
• When the driver side door is opened
• ABS/VSC is activated.
• When brake control and output suppression by the driving support
device are activated (example:
Pre-Collision S ystem, Parking
Support Brake (If equipped))
• When the system determines it cannot continue i n the current
environment
• When the power switch is turned OFF
■When Grip Control is not avail-
able
In the following conditions, Grip
Control is not available.
• When the brake system or EV system is malfunctioning
• After the EV system is started and until the vehicle has been running
for a while
■Brake hold system
The brake hold system turns OFF
when the Grip Control is being used.
Press the brake pedal firmly and
operate the switch.
When using the brake hold system
again, turn ON the brake hold sys-
tem after releasing the Grip Control.
NOTICE
■Long term usage
If used continuously for a long
periods of time, the temperature
of the brakes may rise the system
may temporarily stop.
■Operation noises and vibra-
tions
• Operating noise may be heard from motor room, however this
is not a malfunction.
• When the brake pedal is depressed, it may become
harder than usual or it may feel
different from normal, but this is
not a malfunction.
■When the operation indicator
does not turn on in the meter
even after operating the
switch
The system may not be working
properly. Have the vehicle
inspected at your Toyota dealer.

3875-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
■ECB (Electronically Con-
trolled Brake System)
The electronically controlled
system generates braking force
corresponding to the brake
operation
■ABS (Anti-lock Brake Sys-
tem)
Helps to prevent wheel lock
when the brakes are applied
suddenly, or if the brakes are
applied while driving on a slip-
pery road surface
■Brake assist
Generates an increased level of
braking force after the brake
pedal is depressed when the
system detects a panic stop sit-
uation
■VSC (Vehicle Stability Con-
trol)
Helps the driver to control skid-
ding when swerving suddenly or
turning on slippery road sur-
faces.
■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 slip-
pery roads
■Active Cornering Assist
(ACA)
Helps to prevent the vehicle
from drifting to the outer side by
performing inner wheel brake
control when attempting to
accelerate while turning
■Hill-start assist control
Helps to reduce the backward
movement of the vehicle when
starting on an uphill
■EPS (Electric Power Steer-
ing)
Employs an electric motor to
reduce the amount of effort
needed to turn the steering
wheel.
Driving assist systems
To keep driving safety and
performance, the following
systems operate automati-
cally 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 vehicle.
Summary of the driving
assist systems

3885-4. Using the driving support systems
Owners Manual_USA_M42C01_en
■The Secondary Collision
Brake
When the SRS airbag sensor
detects a collision and the sys-
tem operates, the brakes and
brake lights are automatically
controlled to reduce the vehicle
speed and help reduce the pos-
sibility of further damage due to
a secondary collision.
■When the
TRAC/VSC/ABS/Trailer Sway
Control systems are operating
The slip indicator light will flash
while the TRAC/VSC/ABS/Trailer
Sway Control systems are operat-
ing.
■Disabling the TRAC system
If the vehicle gets stuck in mud, dirt
or snow, the TRAC system may
reduce power from the EV system to
the wheels.
Pressing to turn the system off
may make it easier for you to rock
the vehicle in order to free it.
To turn the TRAC system off, quickly
press and release .
The “Traction Control Turned OFF”
will be shown on the multi-informa-
tion display.
Press again to t urn the system
back on.
■Turning off both TRAC, VSC
and Trailer Sway Control sys-
tems
To turn the TRAC/VSC/Trailer Sway
Control systems off, press and hold for more than 3 seconds while
the vehicle is stopped.
The VSC OFF indicator light will
come on and the “Traction Control
Turned OFF” will be shown on the
multi-information display.
*
Press again to turn the systems
back on.
*: PCS (Pre-Collision System) will also be disabled (only pre-collision
warning is available). The PCS
warning light will come on and a
message will be disp layed on the
multi-information display.
(  P.270)
■When the message is dis-
played on the multi-information
display showing that TRAC has
been disabled even if has
not been pressed
TRAC is temporary deactivated. If
the information continues to show,
contact your Toyota dealer.
■Operating conditions of hill-
start assist control
When all of the fo llowing conditions
are met, the hill-star t assist control
will operate:
●The shift position is in a position
other than P or N (when starting
off forward/backward on an

3895-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
upward incline)
●The vehicle is stopped
●The accelerator pedal is not
depressed
●The parking brake is not engaged
●Power switch is turned to ON
■Automatic system cancelation
of hill-start as sist control
The hill-start assis t control will turn
off in any of the following situations:
●The shift position is shifted to P or
N
●The accelerator pedal is
depressed
●The brake pedal is depressed and
the parking brake is engaged
●A maximum of 2 seconds have
elapsed after the brake pedal is
released
●Power switch is turned to OFF
■Sounds and vibrations caused
by the ABS, brake assist, VSC,
Trailer Sway Control, TRAC and
hill-start assist control systems
●A sound may be heard from the
motor compartment when the
brake pedal is dep ressed repeat-
edly, when the EV system 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 t he above sys-
tems 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.
■ECB operating sound
ECB operating sound may be heard
in the following cases, but it does
not indicate that a malfunction has
occurred.
●Operating sound heard from the motor compartment when the
brake pedal is operated.
●Operating sound heard from the
motor compartment when one or
two minutes passed after the stop
of the EV system.
■Active Cornering Assist opera-
tion sounds and vibrations
When the Active Cornering Assist is
operated, operation sounds and
vibrations may be generated from
the brake system, but this is not a
malfunction.
■EPS operation sound
When the steering wheel is oper-
ated, a motor sound (whirring
sound) may be heard. This does not
indicate a malfunction.
■Automatic reactivation of
TRAC, Trailer Sway Control and
VSC systems
After turning the TRAC, Trailer
Sway Control and VSC systems off,
the systems will be a utomatically re-
enabled in the following situations:
●When the power switch is turned
off
●If only the TRAC sy stem is turned
off, the TRAC will turn on when
vehicle speed increases.
If both the TRAC and VSC sys-
tems are turned of f, automatic re-
enabling will not occur when vehi-
cle speed increases
■Operating conditions of Active
Cornering Assist
The system operates when the fol-
lowing occurs.
●TRAC/VSC can operate
●The driver is attempting to accel-
erate while turning
●The system detects that the vehi-
cle is drifting to the outer side
●The brake pedal is released
■Reduced effectiveness of the
EPS system
The effectiveness of the EPS sys-

3905-4. Using the driving support systems
Owners Manual_USA_M42C01_entem is reduced to prevent the sys-
tem from overheating when there is
frequent steering input over an
extended period of time. The steer-
ing wheel may feel heavy as a
result. Should this occur, refrain
from excessive steering input or
stop the vehicle and turn the EV
system off. The E
PS system should
return to normal wit hin 10 minutes.
■Secondary Collision Brake
operating conditions
The system operates when the SRS
airbag sensor detects a collision
while the vehicle is in motion. How-
ever, the system does not operate
when the components are dam-
aged.
■Secondary Collision Brake
automatic cancellation
The system is automatically can-
celed in any of th e following situa-
tions.
●The vehicle speed drops to
approximately 0 mph (0 km/h)
●A certain amount o f time elapses
during operation
●The accelerator pedal is
depressed a large amount
WARNING
■The ABS does not operate
effectively when
●The limits of tire gripping perfor-
mance have been exceeded
(such as excessively worn tires
on a snow covered road).
●The vehicle hydroplanes while
driving at high speed on wet or
slick roads.
■Stopping distance when the
ABS is operating may exceed
that of normal conditions
The ABS is not designed to
shorten the vehicle’s stopping dis-
tance. Always maintain a safe dis-
tance from the veh icle in front of
you, especially in the following sit-
uations:
●When driving on dirt, gravel or
snow-covered roads
●When driving with tire chains
●When driving over bumps in the
road
●When driving over roads with
potholes or uneven surfaces
■TRAC/VSC may not operate
effectively when
Directional control and power may
not be achievable while driving on
slippery road surfaces, even if the
TRAC/VSC system is operating.
Drive the vehicle carefully in con-
ditions where stability and power
may be lost.
■Active Cornering Assist does
not operate effectively when
●Do not overly rely on Active
Cornering Assist. Active Corner-
ing Assist may not operate
effectively when accelerating
down slopes or driving on slip-
pery road surfaces.
●When Active Corn ering Assist
frequently operates, Active Cor-
nering Assist may temporarily
stop operating to ensure proper
operation of the brakes, TRAC
and VSC.
■Hill-start assist control does
not operate effectively when
●Do not overly rely on hill-start
assist control. Hill-start assist
control may not operate effec-
tively on steep inclines and
roads covered with ice.

3915-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
WARNING
●Unlike the parking brake, hill-
start assist control is not
intended to hold the vehicle sta-
tionary for an extended period
of time. Do not attempt to use
hill-start assist control to hold
the vehicle on an incline, as
doing so may lead to an acci-
dent.
■When the
TRAC/ABS/VSC/Trailer Sway
Control is activated
The slip indicator light flashes.
Always drive carefully. Reckless
driving may cause an accident.
Exercise particular care when the
indicator light flashes.
■When the TRAC/VSC/Trailer
Sway Control systems are
turned off
Be especially careful and drive at
a speed appropriate to the road
conditions. As these are the sys-
tems to help ensure vehicle stabil-
ity and driving force, do not turn
the TRAC/VSC/Trailer Sway Con-
trol systems off unless necessary.
Trailer Sway Control is part of the
VSC system and will not operate
if VSC is turned off or experiences
a malfunction.
■Replacing tires
Make sure that all tires are of the
specified size, brand, tread pat-
tern and total load capacity. In
addition, make sure that the tires
are inflated to the recommended
tire inflation pressure level.
The ABS, TRAC, VSC and Trailer
Sway Control systems will not
function correctly if different tires
are installed on the vehicle.
Contact your Toyota dealer for fur-
ther information when replacing
tires or wheels.
■Handling of tires and the sus-
pension
Using tires with any kind of prob-
lem or modifying the suspension
will affect the driving assist sys-
tems, and may cause a system to
malfunction.
■Trailer Sway Control precau-
tion
The Trailer Sway Control system
is not able to red uce trailer sway
in all situations. Depending on
many factors such as the condi-
tions of the vehicle, trailer, road
surface and driving environment,
the Trailer Sway Control system
may not be effective. Refer to
your trailer owner’s manual for
information on how to tow your
trailer properly.
■If trailer sway occurs
Observe the following precau-
tions.
Failing to do so may cause death
or serious injury.
●Firmly grip the steering wheel.
Steer straight ahead. Do not try
to control trailer swaying by
turning the steering wheel.
●Begin releasing the accelerator
pedal immediately but very
gradually to reduce speed.
Do not increase speed. Do not
apply vehicle brakes.
If you make no extreme correction
with the steering or brakes, your
vehicle and traile r should stabi-
lize. ( P.229)

3925-4. Using the driving support systems
Owners Manual_USA_M42C01_en
WARNING
■Secondary Collision Brake
Do not rely solely upon the Sec-
ondary Collision Brake. This sys-
tem is designed to help reduce
the possibility of further damage
due to a secondary collision, how-
ever, that effect changes accord-
ing to various conditions. Overly
relying on the system may result
in death or serious injury.