warning light TOYOTA RAV4 PLUG-IN HYBRID 2023 Workshop Manual

3465-5. Using the driving support systems
■Enabling/disabling the pre-col-
lision system
The pre-collision system can be
enabled/disabled on the screen
( P.206, 217) of the multi-informa-
tion display.
The system is automatically enabled
each time the power switch is turned to
ON.
If the system is disabled, the PCS
warning light will turn on and a
message will be displayed on the
multi-information display.
■Changing the pre-collision
warning timing
The pre-collision warning timing
can be changed on the screen
( P.206, 217) of the multi-informa-
tion display.
WARNING
• When the emergency steering assist is operating, if the steering
wheel is held firmly or is operated in the opposite direction to that which the system is generating torque, the
function may be canceled.
■When to disable the pre-colli-
sion system
In the following situations, disable the system, as it may not operate prop-
erly, possibly leading to an accident resulting in death or serious injury:
●When the vehicle is being towed
●When your vehicle is towing another vehicle
●When transporting the vehicle via truck, boat, train or similar means of
transportation
●When the vehicle is raised on a lift
with the hybrid system on and the tires are allowed to rotate freely
●When inspecting the vehicle using a drum tester such as a chassis dynamometer or speedometer tes-
ter, or when using an on vehicle wheel balancer
●When a strong impact is applied to the front bumper or front grille, due to an accident or other reasons
●If the vehicle cannot be driven in a stable manner, such as when the
vehicle has been in an accident or is malfunctioning
●When the vehicle is driven in a sporty manner or off-road
●When the tires are not properly inflated
●When the tires are very worn
●When tires of a size other than
specified are installed
●When tire chains are installed
●When a compact spare tire or an emergency tire puncture repair kit is used
●If equipment (snow plow, etc.) that may obstruct the radar sensor or
front camera is temporarily installed to the vehicle
Changing settings of the
pre-collision system

349
5 5-5. Using the driving support systems
Driving
●Intersection right/left turn assistance (pre-collision warning)
When the turn signal lights are not flashing, support for turning left or right at an inter-
section which targets oncoming vehicles does not work.
●Intersection right/left turn assistance (pre-collision braking)
When the turn signal lights are not flashing, support for turning left or right at an inter-
section which targets oncoming vehicles does not work.
■Object detection function
The system detects objects based on
their size, profile, motion, etc. However,
an object may not be detected depend-
ing on the surrounding brightness and
the motion, posture, and angle of the
detected object, preventing the system
from operating properly. (P.351)
The illustration shows an image of
detectable objects.
■Conditions under which the system
may operate even if there is no pos-
sibility of a collision
●In some situations such as the follow-ing, the system may determine that
there is a possibility of a frontal colli-
sion and operate.
• When passing a detectable object,
etc.
• When changing lanes while overtak-
ing a detectable object, etc.
• When approaching a detectable
object in an adjacent lane or on the
roadside, such as when changing the
course of travel or driving on a wind-
ing road
• When rapidly closing on a detectable
object, etc.
• When approaching objects on the
Detectable objectsVehicle speedOncoming vehicle
speedRelative speed
between your vehi-
cle and object
Oncoming vehiclesApprox. 10 to 25
km/h (7 to 15 mph)Approx. 30 to 55
km/h (20 to 35 mph)Approx. 40 to 80
km/h (25 to 50 mph)
PedestriansApprox. 10 to 25
km/h (7 to 15 mph)Approx. 10 to 25
km/h (7 to 15 mph)
Detectable objectsVehicle speedOncoming vehicle
speedRelative speed
between your vehi-
cle and object
Oncoming vehiclesApprox. 15 to 25
km/h (10 to 15 mph)Approx. 30 to 45
km/h (20 to 28 mph)Approx. 45 to 70
km/h (28 to 43 mph)
PedestriansApprox. 10 to 25
km/h (7 to 15 mph)Approx. 10 to 25
km/h (7 to 15 mph)

353
5 5-5. Using the driving support systems
Driving
ations, such as the following, the
emergency steering assist may not
operate.
• When the white (yellow) lane lines are
difficult to see, such as when they are
faint, diverging/merging, or a shadow
is cast upon them
• When the lane is wider or narrower
than normal
• When there is a light and dark pattern
on the road surface, such as due to
road repairs
• When the target is too close
• When there is insufficient safe or
unobstructed space for the vehicle to
be steered into
• If oncoming vehicle is present
• If VSC function is operating
●In some situations such as the follow-
ing, sufficient braking force or steering
force may not be obtained, preventing
the system from performing properly:
• If the braking functions cannot operate
to their full extent, such as when the
brake parts are extremely cold,
extremely hot, or wet
• If the vehicle is not properly main-
tained (brakes or tires are excessively
worn, improper tire inflation pressure,
etc.)
• When the vehicle is being driven on a
gravel road or other slippery surface
• When the road surface has deep
wheel tracks
• When driving on a hill road
• When driving on a road that has
inclines to the left or right
■If VSC is disabled
●If VSC is disabled (P.417), the pre-
collision brake assist and pre-collision
braking functions are also disabled.
●The PCS warning light will turn on and
“VSC Turned OFF Pre-Collision Brake
System Unavailable” will be displayed
on the multi-information display.
*: If equipped
LTA (Lane Tracing
Assist)
*
While driving on a road with
clear white (yellow) lane lines,
the LTA system warns the
driver if the vehicle may devi-
ate from the current lane or
course
*, and also can slightly
operate the steering wheel to
help avoid deviation from the
lane or course
*. Also, while the
dynamic radar cruise control
with full-speed range (P.368)
is operating, this system will
operate the steering wheel to
maintain the vehicle’s lane
position.
The LTA system recognizes
white (yellow) lane lines or a
course
* using the front cam-
era. Additionally, it detects pre-
ceding vehicles using the front
camera and radar.
*: Boundary between asphalt and the
side of the road, such as grass,
soil, or a curb

3545-5. Using the driving support systems
WARNING
■Before using LTA system
●Do 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.
●Failure to perform appropriate driv-
ing operations and pay careful attention may lead to an accident, resulting in death or serious injury.
■Situations 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.
●Vehicle is driven on a road surface which is slippery due to rainy weather, fallen snow, freezing, etc.
●Vehicle is driven on a snow-cov-ered road.
●White (yellow) lines are difficult to see due to rain, snow, fog, dust,
etc.
●Vehicle is driven in a temporary
lane or restricted lane due to con- struction work.
●Vehicle is driven in a construction zone.
●A spare tire, tire chains, etc. are equipped.
●When the tires have been exces-sively worn, or when the tire infla-tion pressure is low.
●When your vehicle is towing a trailer or during emergency towing
■Preventing LTA system malfunc-tions and operations performed
by mistake
●Do not modify the headlights or place stickers, etc. on the surface of
the lights.
●Do 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.
●Do not install or place anything on
the hood or grille. Also, do not install a grille guard (bull bars, kan-garoo bar, etc.).
●If your windshield needs repairs, contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
■Conditions 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.

3565-5. Using the driving support systems
■Lane 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
●The vehicle is driven in an area without white (yellow) lines, such as
in front of a tollgate or checkpoint, or at an intersection, etc.
●The white (yellow) lines are cracked, “Raised pavement marker” or stones are present.
●The white (yellow) lines cannot be seen or are difficult to see due to
sand, etc.
●The vehicle is driven on a road sur-
face that is wet due to rain, pud- dles, etc.
●The traffic lines are yellow (which may be more difficult to recognize than lines that are white).
●The white (yellow) lines cross over a curb, etc.
●The vehicle is driven on a bright surface, such as concrete.
●If the edge of the road is not clear or straight.
●The vehicle is driven on a surface that is bright due to reflected light,
etc.
●The vehicle is driven in an area
where the brightness changes sud- denly, such as at the entrances and exits of tunnels, etc.
●Light from the headlights of an oncoming vehicle, the sun, etc.
enters the camera.
●The vehicle is driven on a slope.
●The vehicle is driven on a road which tilts left or right, or a winding
road.
●The vehicle is driven on an
unpaved or rough road.
●The traffic lane is excessively nar-
row or wide.
●The vehicle is extremely tilted due to carrying heavy luggage or having improper tire pressure.
●The distance to the preceding vehi-cle is extremely short.
●The vehicle is moving up and down a large amount due to road condi-
tions during driving (poor roads or road seams).
●When 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.
●The vehicle is struck by a cross-
wind.
●The vehicle is affected by wind from
a vehicle driven in a nearby lane.
●The vehicle has just changed lanes
or crossed an intersection.
●Tires which differ by structure, man-
ufacturer, brand or tread pattern are used.
●When tires of a size other than specified are installed.
●Snow tires, etc. are equipped.
●The vehicle is being driven at
extremely high speeds.
Functions included in LTA
system

3725-5. 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
speed control mode. (P.377)
C
Setting the vehicle speed
(vehicle-to-vehicle distance
control mode)

3885-5. Using the driving support systems
■Outside rear view mirror indicators visibility
In strong sunlight, the outside rear view mirror indicator may be difficult to see.
■Hearing the RCTA buzzer
The RCTA buzzer may be difficult to
hear over loud noises such as high audio volume.
■When “Blind Spot Monitor Unavail-able” or “RCTA Unavailable” is
shown on the multi-information display
The sensor voltage has become abnor-
mal, or water, snow, mud, etc., may be built up in the vicinity of the sensor area of the rear bumper. ( P.388)
Removing the water, snow, mud, etc., from the vicinity of the sensor area should return it to normal.
Also, the sensor may not function nor- mally when used in extremely hot or cold weather.
■When “Blind Spot Monitor Malfunc-
tion Visit Your Dealer” or “RCTA Malfunction Visit Your Dealer” is shown on the multi-information
display
There may be a sensor malfunction or misaligned. Have the vehicle inspected
at any authorized Toyota retailer or Toyota authorized repairer, or any reli-
able repairer.
■Customization
Some functions can be customized. ( P.206, 217)
WARNING
■To ensure the system can oper- ate properly
Blind Spot Monitor sensors are installed inside the left and right sides of the rear bumper respectively.
Observe the following to ensure the Blind Spot Monitor can function cor-rectly.
●Keep the sensors and the sur-rounding areas on the rear bumper
clean at all times. If a sensor or its surrounding area on the rear bumper is dirty or cov-
ered with snow, the Blind Spot Monitor may not operate and a warning message ( P.388) will be
displayed. In this situation, clear off the dirt or snow and drive the vehi-cle with the operation conditions of
the BSM function ( P.390) satis- fied for approximately 10 minutes. If the warning message does not dis-
appear, have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.

389
5
5-5. Using the driving support systems
Driving
■Vehicles that can be detected
by the Blind Spot Monitor
The BSM function uses radar sen-
sors to detect the following vehicles
traveling in adjacent lanes and
advises the driver of the presence
of such vehicles via the indicators
on the outside rear view mirrors.
Vehicles that are traveling in
areas that are not visible using
the outside rear view mirrors
(the blind spots)
Vehicles that are approaching
rapidly from behind in areas that
are not visible using the outside
rear view mirrors (the blind
spots)
■The BSM function detection
areas
The areas that vehicles can be
detected in are outlined below.
WARNING
●Do not subject a sensor or its sur- rounding area on the rear bumper
to a strong impact. If a sensor is moved even slightly off position, the system may mal-
function and vehicles may not be detected correctly. In the following situations, have
your vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
• A sensor or its surrounding area is subject to a strong impact.
• If the surrounding area of a sensor is scratched or dented, or part of them has become disconnected.
●Do not disassemble the sensor.
●Do not attach accessories, stickers (including transparent stickers), alu-minum tape, etc. to a sensor or its
surrounding area on the rear bumper.
●Do not modify the sensor or sur-rounding area on the rear bumper.
●If a sensor or the rear bumper needs to be removed/installed or replaced, contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer.
●Do not paint the rear bumper any color other than an official Toyota color.
The Blind Spot Monitor
function
A
B

397
5
5-5. Using the driving support systems
Driving
To re-enable the system, select on
the multi-information display, select
and turn it on.
If the system is disabled, it will remain
off even if the power switch is turned to
ON after the power switch has been
turned off.
■The system can be operated when
●The power switch is in ON.
●Toyota parking assist-sensor function is on.
●The vehicle speed is less than about 10 km/h (6 mph).
●The shift lever is in other than P.
■If “Clean Parking Assist Sensor” is displayed on the multi-information
display
A sensor may be covered with ice, snow, dirt, etc. Remove the ice, snow,
dirt, etc., from the sensor to return the system to normal.
Also, due to ice forming on a sensor at
low temperatures, a warning message
WARNING
■Cautions regarding the use of the system
There is a limit to the degree of recog- nition accuracy and control perfor-mance that this system can provide,
do not overly rely on this system. The driver is always responsible for pay-ing attention to the vehicle’s sur-
roundings and driving safely.
■To ensure the system can oper-
ate properly
Observe the following precautions. Failing to do so may result in the vehi-
cle being unable to be driven safely and possibly cause an accident.
●Do not damage the sensors, and always keep them clean.
●Do not attach a sticker or install an electronic component, such as a backlit license plate (especially fluo-
rescent type), fog lights, fender pole or wireless antenna near a radar sensor.
●Do not subject the surrounding area of the sensor to a strong impact. If
subjected to an impact, have the vehicle inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer. If the front or rear bumper needs to be removed/installed or replaced,
contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
●Do not modify, disassemble or paint the sensors.
●Do not attach a license plate cover.
●Keep your tires properly inflated.
■When to disable the function
In the following situations, disable the
function as it may operate even though there is no possibility of a colli-sion.
●Failing to observe the warnings above.
●A non-genuine Toyota suspension (lowered suspension, etc.) is installed.
■Notes when washing the vehicle
Do not apply intensive bursts of water
or steam to the sensor area.
Doing so may result in the sensor malfunctioning.
●When using a high pressure washer to wash the vehicle, do not
spray the sensors directly, as doing so may cause a sensor to malfunc-tion.
●When using steam to clean the vehicle, do not direct steam too
close to the sensors as doing so may cause a sensor to malfunction.

413
5
5-5. Using the driving support systems
Driving
Press the Trail Mode switch.
Press the Trail Mode switch, to turn the
Trail Mode on. The Trail Mode indicator
light will come on the multi-information
display.
To turn the system off, press the Trail
Mode switch again.
If the tires are spinning, the slip
indicator flashes to indicate that the
Trail Mode is controlling the spin-
ning of the tires.
■Trail Mode
●Trail Mode controls the vehicle so that
it can use the maximum amount of drive force when driving on rough roads. As a result, fuel efficiency may
diminish when compared to driving with Trail Mode off.
●If Trail Mode is continuously used for a long period of time, depending on the driving conditions, the load on
related parts increases and the sys- tem may not function correctly. In this case, “Traction Control Turned OFF”
will be shown on the multi-information display but the vehicle can be driven normally. The “Traction Control
Turned OFF” on the multi-information display will turn off after a short while
Trail Mode
Trail Mode is designed to con-
trol the spinning of the drive
wheels by integratedly con-
trolling AWD, brake and drive
force control systems. Use the
Trail Mode when driving
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.
●Trail mode is intended for use when driving on rough roads.
●Check that the Trail Mode indicator is illuminated before driving.
●Trail Mode is not intended to expand the limits of the vehicle.
Thoroughly check the road condi- tions and drive with caution.
Enabling the system
When the Trail Mode is oper-
ating