2021 TOYOTA RAV4 PHEV brake

429
5
5-5. Using the driving support systems
Driving
• When strong winds are blowing
• If a sensor is cove red with ice, snow,
dirt, etc. (when cleared, the system
will return t o normal) • If heavy rain or wa ter strikes a sensor
• When driving in inclement weather
such as fog, snow or a sandstorm • A sensor is frozen. (Thawing the area
will resolve this problem.)
●Vehicle surroundings
• When an object that cannot be
detected is between the vehicle and a detected object
• If an object such as a vehicle, motor-
cycle, bicycle or pedestrian cuts in front of the vehicl e or runs out from
the side of the vehicle
• The vehicle is approaching a tall or curved curb.
• On an extremely bumpy road, on an
incline, on gravel, or on grass. • The objects draw too close to the sen -
sor.
●Other sonic waves sources
• When vehicle horns , vehicle detec-
tors, motorcycle engines, air brakes of large vehicles, the clearance sonar of
other vehicles or other devices which
produce ultrasonic waves are near the
vehicle • If a sticker or an electronic compo -
nent, such as a backl it license plate
(especially fluorescent type), fog
lights, fender pole or wireless antenna
is installed near a sensor
●Changes in the vehicle
• If the vehicle is significantly tilted • If the front of the v ehicle is raised or
lowered due to the carried load
• If the orientation of a sensor has been changed due to a collision or other
impact
• When equipment that may obstruct a sensor is installed , such as a towing
eyelet, bumper protector (an addi -
tional trim str ip, etc.), bicycle carrier, or snow plow
• If the suspension has been modified
or tires of a size o ther than specified are installed
• If paint or a sticker is applied to the
sensor

4305-5. Using the driving support systems
*: If equipped
This function will operate in situa-
tions such as the following if a vehi -
cle is detected in the traveling
direction of the vehicle.
■When reversing, a vehicle is
approaching and the brake
pedal is not depressed, or is
depressed late
→ P.408
■The Parking Support Brake func-
tion (rear-crossing vehicles) will operate when
The function will operate when the
PKSB OFF indicator is not illuminated ( →P.170, 171) and all of the following
conditions are met:
●Hybrid system outpu t restriction con-
trol
• The Parking Support Brake is enabled.
• The vehicle speed is approximately 15
km/h (9 mph) or less.
Parking Support Brake
function (rear-crossing
vehicles)*
If a rear radar sensor detects a
vehicle approaching from the
right or left at the rear of the
vehicle and the system deter -
mines that the possibility of a
collision is high, this function
will perform brake control to
reduce the likelihood of an
impact with the approaching
vehicle.
Examples of function opera -
tion
Types of sensors
WARNING
■To ensure the Parking Support
Brake (rear-crossing vehicles)
can operate properly
Observe the following precautions
regarding the rear radar sensors
( →P.408). Failure to do so may cause
a sensor to not ope rate properly, and may cause an accident.
●Do not modify, disassemble or paint the sensors.
●Do not replace a rear radar sensor with a part other than a genuine
part.
●Do not damage the rear radar sen -
sors, and always keep the radar
sensors and their surrounding area on the bumper clean.
●If the area around a rear radar sen - sor is subjected to an impact, the
system may not operate properly
due to a sensor malfunction. Have the vehicle inspected by any autho -
rized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
●Observe the rear radar sensor han - dling precautions. ( →P.408)

431
5
5-5. Using the driving support systems
Driving
• Vehicles are ap proaching from the
right or left at the rear of the vehicle at a traveling speed of more than
approximately 8 km/h (5 mph)
• The shift lever is in R. • The Parking Support Brake deter -
mines that a stronger than normal
brake operation is necessary to avoid a collision with an approaching vehi -
cle.
●Brake control
• Hybrid system output restriction con -
trol is operating • The Parking Support Brake deter -
mines that an emergency brake oper -
ation is necessary to avoid a collision with an approaching vehicle.
■The Parking Support Brake func -
tion (rear-crossing vehicles) will
stop operating when
The function will stop operating if any of
the following conditions are met:
●Hybrid system output restriction con -
trol
• The Parking Support Brake is dis - abled.
• The collision becomes avoidable with
normal brake operation. • A vehicle is no longer approaching
from the right or lef t at the rear of the
vehicle.
●Brake control
• The Parking Support Brake is dis - abled.
• Approximately 2 seconds have
elapsed since the vehicle was stopped by brake control.
• The brake pedal is depressed after
the vehicle is stopped by brake con - trol.
• A vehicle is no longer approaching
from the right or lef t at the rear of the
vehicle.
■Detection area of the Parking Sup - port Brake function (rear-crossing
vehicles)
The detection area of the Parking Sup - port Brake function (rear-crossing vehi -
cles) differs from t he detection area of
the RCTA function ( →P.412). Therefore,
even if the RCTA function detects a
vehicle and provides an alert, the Park - ing Support Brake function (rear-cross -
ing vehicles) may not start operating.
■Conditions under which the Park -
ing Support Brake function (rear- crossing vehicles) will not detect a
vehicle
The Parking Support Brake function (rear-crossing vehicles) is not designed
to detect the following types of vehicles
and/or objects:
●Vehicles approaching from directly
behind
●Vehicles backing up in a parking
space next to your vehicle
●Vehicles that the sensors cannot
detect due to obstructions
●Vehicles which suddenly accelerate or
decelerate near your vehicle
●Guardrails, walls, signs, parked vehi -
cles and similar stationary objects*
●Small motorcycles, bicycles, pedestri -
ans, etc.*
●Vehicles moving away from your vehi - cle
●Vehicles approachin g from the park-
ing spaces next to your vehicle*
●Objects which are ex tremely close to
a radar sensor*
●Vehicles which are approaching from
the right or left at the rear of the vehi -
cle at a traveling sp eed of less than
approximately 8 km/h (5 mph)
●Vehicles which are approaching from
the right or left at the rear of the vehi - cle at a traveling sp eed of more than

4325-5. Using the driving support systems
approximately 24 km/h (15 mph)*: Depending on the conditions, detec-
tion of a vehicle and/or object may
occur.
■Situations in which the system may
operate even though there is no possibility of a collision
In some situations such as the following,
the Parking Support Brake function (rear-crossing vehicles) may operate
even though there is n o possibility of a
collision.
●When the parking space faces a
street and vehicles are being driven on the street
●When a detected vehicle turns while approaching the vehicle
●When a vehicle passe s by the side of your vehicle
●When the distance between your vehi -
cle 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 there are spinning objects near
your vehicle such as the fan of an air conditioning unit
●When water is spla shed or sprayed toward the rear bumper, such as from
a sprinkler
■Situations in which the Parking
Support Brake function (rear-cross - ing vehicles) may not operate prop -
erly
In some situations, s uch as the follow- ing, the radar sensors may not detect an
object and this function may not operate
properly
●Stationary objects
●When a sensor or the area around a
sensor is extremely hot or cold
●If the rear bumper is covered with ice,
snow, dirt, etc.
●When it is raining heavily or water
strikes the vehicle
●When the detection area of a radar
sensor is obstruct ed by an adjacent
vehicle
●If the vehicle is significantly tilted
●When equipment that may obstruct a
sensor is installed , such as a towing
eyelet, bumper protector (an addi - tional trim str ip, etc.), bicycle carrier,
or snow plow
●If the suspension has been modified or tires of a size o ther than specified
are installed
●If the front of the v ehicle is raised or
lowered due to the carried load
●If a sticker or an electronic compo -

435
5
5-5. Using the driving support systems
Driving
switch is turned off, normal mode and
Eco drive mode w ill not be automati- cally canceled.)
Press the Trail Mode switch
When the switch is pressed, Trail Mode
turns on and the Trail Mode indicator
illuminates on the multi-information dis -
play.
When the switch is pr essed again, the
Trail Mode indicator turns off.
Trail Mode
Trail Mode is a system that per -
forms integrated control for
the AWD, brake and drive force
control systems to assist the
drive power on bumpy roads,
etc.
WARNING
■Before using Trail Mode
Make sure to observe the following
precautions. Failure to observe these precautions may result in an unex -
pected accident.
●Check that the Tra il Mode indicator is illuminated before driving. Trail
Mode will not operate when the
indicator is off.
●Trail Mode is not intended to
expand the limits of the vehicle. Thoroughly check the road condi -
tions and driv e with caution.
●Thoroughly check the road condi-
tions before driving. As Trail Mode
is suitable for driving on bumpy roads, such as those where the tire
o n o n e s i d e s p i n s , t here is a chance
that Trail Mode may not be the most appropriate for other road
conditions.
Turning Trail Mode on

4385-5. Using the driving support systems
■ECB (Electronically Con-
trolled Brake System)
The electronically controlled sys -
tem generates braking force corre -
sponding to the brake operation
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when
the brakes are applied suddenly, or
if the brakes are applied while driv -
ing 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.
■VSC+ (Vehicle Stability Con -
trol+)
Provides cooperative control of the
ABS, TRC, VSC and EPS.
Helps to maintain directional stabil -
ity when swerving on slippery road
surfaces by controlling steering per -
formance.
■Trailer Sway Control
Helps the driver t o control trailer
sway by selectively applying brake
pressure for individual wheels and
reducing driving torque when trailer
sway is detected.
■TRC (Traction Control)
Helps to maintain drive power and
prevent the drive wheels from spin -
ning when starting the vehicle or
accelerating on slippery roads
■Active Cornering Assist (ACA)
Helps to prevent t he vehicle from
drifting to the outer side by perform -
ing inner wheel brake control when
attempting to acc elerate while turn-
ing
■Hill-start assist control
Helps to reduce the backward
movement of the vehicle when
starting on an uphill
■EPS (Electric Po wer Steering)
Employs an electric motor to
reduce the amount of effort needed
to turn the steering wheel
Driving assist systems
To keep driving safety and per -
formance, the following sys -
tems operate aut omatically in
response to various driving sit -
uations. Be aware, however,
that these sys tems are supple-
mentary and should not be
relied upon too heavily when
operating the vehicle.
Summary of the driving
assist systems

439
5
5-5. Using the driving support systems
Driving
■E-Four (Electronic On-Demand
AWD system)
Automatically switches from front
wheel drive to all-wheel drive
(AWD) according to the driving con -
ditions, helping to ensure reliable
handling and stability. Examples of
conditions where the system will
switch to AWD are when cornering,
going uphill, start ing off or acceler-
ating, and when the road surface is
slippery due to snow, rain, etc.
■Emergency brake signal
When the brakes are applied sud -
denly, the emergency flashers
automatically flash to alert the vehi -
cle behind.
■The Secondary Collision
Brake (if equipped)
When the SRS airbag sensor
detects a collision and the system
operates, the brakes and brake
lights are automatically controlled
to reduce the v ehicle speed and
help reduce the possibility of further
damage due to a secondary colli -
sion.
■When the TRC/VSC/ABS/Trailer Sway Control syst ems are operat-
ing
The slip indicator light will flash while the TRC/VSC/ABS/Traile r Sway Control
systems are operating.
■Disabling the TRC system
If the vehicle gets stuck in mud, dirt or snow, the TRC system may reduce
power from the hyb rid system to the
wheels.
Pressing to turn t he system off may
make it easier for you to rock the vehicle
in order to free it.
To turn the TRC system off, quickly
press and release .
“Traction Control Tu rned OFF” will be
shown on the multi-information display.
Press again to turn the system back
on.
■Turning off the TRC/VSC/Trailer
Sway Control systems
To turn the TRC/VS C/Trailer Sway Con-
trol systems off, press and hold for
more than 3 seconds wh ile the vehicle is
stopped.
The VSC OFF indicator light will come
on and the “Tractio n Control Turned
OFF” will be shown on the multi-infor-
mation display.*
Press again to turn the systems
back on.
*: On vehicles with PCS (Pre-Collision

4405-5. Using the driving support systems
System), PCS will also be disabled
(only Pre-Collision warning is avail -
able). The PCS warning light will
come on and a message will be dis -
played on the multi-information dis -
play. ( →P.361)
■When the message is displayed on
the multi-information display show -
ing that TRC has been disabled
even if has not been pressed
TRC is temporary deactivated. If the information continues to show, contact
any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
■Operating conditions of hill-start
assist control
When the following four conditions are met, the hill-start as sist control will oper-
ate:
●The shift lever is in a position other
than P or N (when starting off for-
ward/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 brak e is engaged.
●No more than 2 seconds have elapsed after the brake pedal is
released.
■Sounds and vibrations caused by
the ABS, brake assist, VSC, Trailer Sway Control, TRC and hill-start
assist control systems
●A sound may be heard from the
engine compartment when the brake
pedal is depressed repeatedly, when
the hybrid system i s started or just
after the vehicle beg ins to move. This sound does not indicate that a mal -
function has occurred in any of these
systems.
●Any of the followin g conditions may
occur when the a bove 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.
■ECB operating sound
ECB operating sound may be heard in
the following cases, but it does not indi-
cate that a malfun ction has occurred.
●Operating sound heard from the
engine compartment when the brake pedal is operated.
●Motor sound of the brake system heard from the front part of the vehicle
when the driver’ door is opened.
●Operating sound heard from the
engine compartment when one or two
minutes passed after the stop of the hybrid system.
■Active Cornering Assist operation
sounds and vibrations
When the Active Cornering Assist is operated, operation sounds and vibra -
tions may be generat ed from the brake
system, but thi s is not a malfunction.
■EPS operation sound
When the steering wheel is operated, a
motor sound (whirring sound) may be
heard. This does not indicate a malfunc - tion.
■Automatic reacti vation of TRC,
Trailer Sway Control and VSC sys -
tems
After turning the TRC, Trailer Sway Control and VSC systems off, the sys -
tems will be automati cally re-enabled in
the following situations:
●When the power switch is turned off.
●If only the TRC syst em is turned off,