steering TOYOTA RAV4 PLUG-IN HYBRID 2022 Workshop Manual

319
5
5-5. Using the driving support systems
Driving
WARNING
QBefore using LTA system
ODo not rely solely upon the LTA
system. The LTA system does not automatically drive the vehicle or reduce the amount of attention that
must be paid to the area in front of the vehicle. The driver must always assume full responsibility for driving
safely by paying careful attention to the surrounding conditions and operating the steering wheel to cor-
rect the path of the vehicle. Also, the driver must take adequate breaks when fatigued, such as from
driving for a long period of time.
OFailure to perform appropriate driv-
ing operations and pay careful attention may lead to an accident, resulting in death or serious injury.
OWhen not using the LTA system, use the LTA switch to turn the sys-
tem off.
QSituations unsuitable for LTA
system
In the following situations, use the LTA switch to turn the system off.
Failure to do so may lead to an acci- dent, resulting in death or serious injury.
OVehicle is driven on a road surface which is slippery due to rainy
weather, fallen snow, freezing, etc.
OVehicle is driven on a snow-cov-
ered road.
OWhite (yellow) lines are difficult to
see due to rain, snow, fog, dust, etc.
OVehicle is driven in a temporary lane or restricted lane due to con-struction work.
OVehicle is driven in a construction zone.
OA spare tire, tire chains, etc. are equipped.
OWhen the tires have been exces-sively worn, or when the tire infla-tion pressure is low.
OWhen your vehicle is towing a trailer or during emergency towing
QPreventing LTA system malfunc-tions and operations performed
by mistake
ODo not modify the headlights or place stickers, etc. on the surface of
the lights.
ODo not modify the suspension etc. If
the suspension etc. needs to be replaced, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
ODo not install or place anything on
the hood or grille. Also, do not install a grille guard (bull bars, kan-garoo bar, etc.).
OIf your windshield needs repairs, contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
QConditions in which functions may not operate properly
In the following situations, the func-
tions may not operate properly and the vehicle may depart from its lane. Drive safely by always paying careful
attention to your surroundings and operate the steering wheel to correct the path of the vehicle without relying
solely on the functions.

321
5
5-5. Using the driving support systems
Driving
QLane departure alert function
When the system determines that
the vehicle might depart from its
lane or course*, a warning is dis-
played on the multi-information dis-
play, and either a warning buzzer
will sound or the steering wheel will
vibrate to alert the driver.
When the warning buzzer sounds or
WARNING
OThe vehicle is driven in an area without white (yellow) lines, such as
in front of a tollgate or checkpoint, or at an intersection, etc.
OThe white (yellow) lines are cracked, “Raised pavement marker” or stones are present.
OThe white (yellow) lines cannot be seen or are difficult to see due to
sand, etc.
OThe vehicle is driven on a road sur-
face that is wet due to rain, pud- dles, etc.
OThe traffic lines are yellow (which may be more difficult to recognize than lines that are white).
OThe white (yellow) lines cross over a curb, etc.
OThe vehicle is driven on a bright surface, such as concrete.
OIf the edge of the road is not clear or straight.
OThe vehicle is driven on a surface that is bright due to reflected light,
etc.
OThe vehicle is driven in an area
where the brightness changes sud- denly, such as at the entrances and exits of tunnels, etc.
OLight from the headlights of an oncoming vehicle, the sun, etc.
enters the camera.
OThe vehicle is driven on a slope.
OThe vehicle is driven on a road which tilts left or right, or a winding
road.
OThe vehicle is driven on an
unpaved or rough road.
OThe traffic lane is excessively nar-
row or wide.
OThe vehicle is extremely tilted due to carrying heavy luggage or having improper tire pressure.
OThe distance to the preceding vehi-cle is extremely short.
OThe vehicle is moving up and down a large amount due to road condi-
tions during driving (poor roads or road seams).
OWhen driving in a tunnel or at night with the headlights off or when a headlight is dim due to its lens
being dirty or it being misaligned.
OThe vehicle is struck by a cross-
wind.
OThe vehicle is affected by wind from
a vehicle driven in a nearby lane.
OThe vehicle has just changed lanes
or crossed an intersection.
OTires which differ by structure, man-
ufacturer, brand or tread pattern are used.
OWhen tires of a size other than specified are installed.
OSnow tires, etc. are equipped.
OThe vehicle is being driven at
extremely high speeds.
Functions included in LTA
system

3225-5. Using the driving support systems
the steering wheel vibrates, check the
area around your vehicle and carefully
operate the steering wheel to move the
vehicle back to the center of the lane.
Vehicles with BSM: When the system
determines that the vehicle might
depart from its lane and that the possi-
bility of a collision with an overtaking
vehicle in the adjacent lane is high, the
lane departure alert will operate even if
the turn signals are operating.
*: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
QSteering assist function
When the system determines that
the vehicle might depart from its
lane or course
*, the system pro-
vides assistance as necessary by
operating the steering wheel in
small amounts for a short period of
time to keep the vehicle in its lane.
If the system detects that the steering wheel has not been operated for a fixed
amount of time or the steering wheel is
not being firmly gripped, a warning is
displayed on the multi-information dis-
play and the function is temporarily
canceled.
Vehicles with BSM: When the system
determines that the vehicle might
depart from its lane and that the possi-
bility of a collision with an overtaking
vehicle in the adjacent lane is high, the
steering assist function will operate
even if the turn signals are operating.
*: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
QVehicle sway warning function
When the vehicle is swaying within
a lane, the warning buzzer will
sound and a message will be dis-
played on the multi-information dis-
play to alert the driver.

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5 5-5. Using the driving support systems
Driving
QLane centering function
This function is linked with dynamic
radar cruise control with full-speed
range and provides the required
assistance by operating the steer-
ing wheel to keep the vehicle in its
current lane.
When dynamic radar cruise control with
full-speed range is not operating, the
lane centering function does not oper-
ate.
In situations where the white (yellow)
lane lines are difficult to see or are not
visible, such as when in a traffic jam,
this function will operate to help follow a
preceding vehicle by monitoring the
position of the preceding vehicle.
If the system detects that the steering
wheel has not been operated for a fixed
amount of time or the steering wheel is
not being firmly gripped, a warning is
displayed on the multi-information dis-
play and the function is temporarily canceled.
Press the LTA switch to turn the
LTA system on.
The LTA indicator illuminates and a
message is displayed on the multi-infor-
mation display.
Press the LTA switch again to turn
the LTA system off.
When the LTA system is turned on or
off, operation of the LTA system contin-
ues in the same condition the next time
the hybrid system is started.
Turning LTA system on

3245-5. Using the driving support systems
LTA indicator
The illumination condition of the indica-
tor informs the driver of the system
operation status.
Illuminated in white: LTA system is
operating.
Illuminated in green: Steering wheel
assistance of the steering assist func-
tion or lane centering function is operat-
ing.
Flashing in orange: Lane departure
alert function is operating.
Operation display of steering
wheel operation support
Displayed when the multi-information
display is switched to the driving sup-
port system information display.
Indicates that steering wheel assis-
tance of the steering assist function or lane centering function is operating.
Both outer sides of the lane are dis-
played: Indicates that steering wheel
assist of the lane centering function is
operating.
One outer side of the lane is displayed:
Indicates that steering wheel assist of
the steering assist function is operating.
Both outer sides of the lane are flash-
ing: Alerts the driver that their input is
necessary to stay in the center of the
lane (lane centering function).
Follow-up cruising display
Displayed when the multi-information
display is switched to the driving sup-
port system information display.
Indicates that steering assist of the lane
centering function is operating by moni-
toring the position of a preceding vehi-
cle.
When the follow-up cruising display is
displayed, if the preceding vehicle
moves, your vehicle may move in the
same way. Always pay careful attention
to your surroundings and operate the
steering wheel as necessary to correct
the path of the vehicle and ensure
safety.
Lane departure alert function
display
Displayed when the multi-information
display is switched to the driving sup-
port system information display.
Indications on multi-infor-
mation display
A
B
C
D

325
5 5-5. Using the driving support systems
Driving
Inside of displayed lines is white
Indicates that the system is recognizing
white (yellow) lines or a course
*. When
the vehicle departs from its lane, the
white line displayed on the side the
vehicle departs from flashes orange.
Inside of displayed lines is black
Indicates that the system is not able to
recognize white (yellow) lines or a
course
* or is temporarily canceled.
*: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
QOperation conditions of each func-
tion
OLane departure alert function
This function operates when all of the
following conditions are met.
• LTA is turned on.
• Vehicle speed is approximately 50
km/h (32 mph) or more.
*1
• System recognizes white (yellow) lane lines or a course
*2. (When a white
[yellow] line or course*2 is recognized
on only one side, the system will oper-
ate only for the recognized side.)
• Width of traffic lane is approximately 3
m (9.8 ft.) or more.
• Turn signal lever is not operated.
(Vehicles with BSM: Except when
another vehicle is in the lane on the
side where the turn signal was oper-
ated)
• Vehicle is not being driven around a
sharp curve.
• No system malfunctions are detected.
(P.327)
*1: The function operates even if the
vehicle speed is less than approxi-
mately 50 km/h (32 mph) when the
lane centering function is operating.
*2: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
OSteering assist function
This function operates when all of the
following conditions are met in addition
to the operation conditions for the lane
departure alert function.
• Setting for “Steering Assist” in the
screen of the multi-information display
is set to “ON”. (P.177)
• Vehicle is not accelerated or deceler-
ated by a fixed amount or more.
• Steering wheel is not operated with a
steering force level suitable for chang-
ing lanes.
• ABS, VSC, TRC and PCS are not
operating.
• TRC or VSC is not turned off.
• Hands off steering wheel warning is
not displayed. (P.326)
OVehicle sway warning function
This function operates when all of the
following conditions are met.
• Setting for “Sway Warning” in the
screen of the multi-information display
is set to “ON”. (P.177)

3265-5. Using the driving support systems
• Vehicle speed is approximately 50
km/h (32 mph) or more.
• Width of traffic lane is approximately 3
m (9.8 ft.) or more.
• No system malfunctions are detected.
(P.327)
OLane centering function
This function operates when all of the
following conditions are met.
• LTA is turned on.
• Setting for “Steering Assist” and “Lane
Center” in the screen of the multi-
information display are set to “ON”.
(P.177)
• This function recognizes white (yel-
low) lane lines or the position of a pre-
ceding vehicle (except when the
preceding vehicle is small, such as a
motorcycle).
• The dynamic radar cruise control with
full-speed range is operating in vehi-
cle-to-vehicle distance control mode.
• Width of traffic lane is approximately 3
to 4 m (10 to 13 ft.).
• Turn signal lever is not operated.
• Vehicle is not being driven around a
sharp curve.
• No system malfunctions are detected.
(P.327)
• Vehicle does not accelerate or decel-
erate by a fixed amount or more.
• Steering wheel is not operated with a
steering force level suitable for chang-
ing lanes.
• ABS, VSC, TRC and PCS are not
operating.
• TRC or VSC is not turned off.
• Hands off steering wheel warning is
not displayed. (P.326)
• The vehicle is being driven in the cen-
ter of a lane.
• Steering assist function is not operat-
ing.
QTemporary cancelation of functions
OWhen operation conditions are no lon-
ger met, a function may be temporar-
ily canceled. However, when the
operation conditions are met again,
operation of the function is automati-
cally restored. (P.325)
OIf the operation conditions (P.325)
are no longer met while the lane cen-
tering function is operating, the steer-
ing wheel may vibrate and the buzzer
may sound to indicate that the func-
tion has been temporarily canceled.
However, if the “Alert” customization
setting is set to , the system will
notify the driver by vibrating the steer-
ing wheel instead of sounding the
buzzer.
QSteering assist function/lane cen-
tering function
ODepending on the vehicle speed, lane
departure situation, road conditions,
etc., the driver may not feel the func-
tion is operating or the function may
not operate at all.
OThe steering control of the function is
overridden by the driver’s steering
wheel operation.
ODo not attempt to test the operation of
the steering assist function.
QLane departure alert function
OThe warning buzzer may be difficult to
hear due to external noise, audio play-
back, etc. Also, it may be difficult to
feel steering wheel vibrations due to
the road conditions, etc.
OIf the edge of the course* is not clear
or straight, the lane departure alert
function may not operate.
OVehicles with BSM: It may not be pos-
sible for the system to determine if
there is a danger of a collision with a
vehicle in an adjacent lane.
ODo not attempt to test the operation of
the lane departure alert function.
*: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
QHands off steering wheel warning
In the following situations, a warning
message urging the driver to hold the
steering wheel and the symbol shown in
the illustration are displayed on the

327
5 5-5. Using the driving support systems
Driving
multi-information display to warn the
driver. The warning stops when the sys-
tem determines that the driver holds the
steering wheel. Always keep your hands
on the steering wheel when using this
system, regardless of warnings.
OWhen the system determines that the
driver is driving without holding the
steering wheel while the system is
operating
If the driver continues to keep their
hands off of the steering wheel, the
buzzer sounds, the driver is warned and
the function is temporarily canceled.
This warning also operates in the same
way when the driver continuously oper-
ates the steering wheel only a small
amount.
The buzzer also sounds even if the alert
type is set to “Steering wheel vibration”.
OWhen the system determines that the
vehicle may not turn and instead
depart from its lane while driving
around a curve
Depending on the vehicle condition and
road conditions, the warning may not
operate. Also, if the system determines
that the vehicle is driving around a
curve, warnings will occur earlier than
during straight-lane driving.
OWhen the system determines that the
driver is driving without holding the
steering wheel while the steering
wheel assist of the steering assist
function is operating.
If the driver continues to keep their
hands off of the steering wheel and the
steering wheel assist is operating, the
buzzer sounds and the driver is warned. Each time the buzzer sounds, the con-
tinuing time of the buzzer becomes lon-
ger.
The buzzer also sounds even if the alert
type is set to “Steering wheel vibration”.
QVehicle sway warning function
When the system determines that the
vehicle is swaying while the vehicle
sway warning function is operating, a
buzzer sounds and a warning message
urging the driver to rest and the symbol
shown in the illustration are simultane-
ously displayed on the multi-information
display.
Depending on the vehicle and road con-
ditions, the warning may not operate.
QWarning message
If the following warning message is dis-
played on the multi-information display
and the LTA indicator illuminates in
orange, follow the appropriate trouble-
shooting procedure. Also, if a different
warning message is displayed, follow
the instructions displayed on the screen.
O“LTA Malfunction Visit Your Dealer”
The system may not be operating prop-
erly. Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
O“LTA Unavailable”
The system is temporarily canceled due
to a malfunction in a sensor other than
the front camera. Turn the LTA system
off, wait for a little while, and then turn
the LTA system back on.
O“LTA Unavailable at Current Speed”

3285-5. Using the driving support systems
The function cannot be used as the
vehicle speed exceeds the LTA opera-
tion range. Drive slower.
QCustomization
Function settings can be changed.
( P.184)
*: If equipped
RSA (Road Sign Assist)*
The RSA system recognizes
specific road signs using the
front camera and/or naviga-
tion system (when speed limit
information is available) to pro-
vide information to the driver
via the display.
If the system judges that the
vehicle is being driven over the
speed limit, performing prohib-
ited actions, etc. according to
the recognized road signs, it
notifies the driver through a
visual notification and notifica-
tion buzzer or steering wheel
vibration.
WARNING
QBefore using the RSA
Do not rely solely upon the RSA sys- tem. RSA is a system which supports
the driver by providing information, but it is not a replacement for a driver’s own vision and awareness.
Drive safely by always paying careful attention to the traffic rules.

3365-5. Using the driving support systems
When a vehicle is detected running ahead of you, the system automatically deceler-
ates your vehicle. When a greater reduction in vehicle speed is necessary, the sys-
tem applies the brakes (the stop lights will come on at this time). The system will
respond to changes in the speed of the vehicle ahead in order to maintain the vehi-
cle-to-vehicle distance set by the driver. Approach warning warns you when the sys-
tem cannot decelerate sufficiently to prevent your vehicle from closing in on the
vehicle ahead.
When the vehicle ahead of you stops, your vehicle will also stop (vehicle is stopped
by system control). After the vehicle ahead starts off, pressing the “+RES” switch or
depressing the accelerator pedal (start-off operation) will resume follow-up cruising.
If the start-off operation is not performed, system control continues to keep your
vehicle stopped.
When the turn signal lever is operated and your vehicle moves to an overtaking lane
while driving at 80 km/h (50 mph) or more, the vehicle will accelerate to help to over-
take a passing vehicle.
The system’s identification of what is an overtaking lane may be determined solely
based on the location of the steering wheel in the vehicle (left side driver position
versus right side driver position.) If the vehicle is driven to a region where the over-
taking lane is on a different side from where the vehicle is normally driven, the vehi-
cle may accelerate when the turn signal lever is operated in the opposite direction to
the overtaking lane (e.g., if the driver normally operates the vehicle in a region
where the overtaking lane is to the right but then drives to a region where the over-
taking lane is to the left, the vehicle may accelerate when the right turn signal is acti-
vated).
Example of acceleration
When there are no longer any preceding vehicles driving slower than the
set speed
The system accelerates until the set speed is reached. The system then returns to
constant speed cruising.
1Press the cruise control main
switch to activate the cruise con-
trol.
Dynamic radar cruise control indicator
will come on and a message will be dis-
played on the multi-information display.
Press the switch again to deactivate the
cruise control.If the cruise control main switch is
pressed and held for 1.5 seconds or
more, the system turns on in constant
C
Setting the vehicle speed
(vehicle-to-vehicle distance
control mode)