TOYOTA 4RUNNER 2020 (in English) Owner's Guide

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The Pre-Collision System uses a radar sensor and camera sensor to help detect a
vehicle or pedestrian in front of your vehicle.
As there is a limit to the degree of recognition accuracy and control performance
that this system can provide, do not overly rely on this system. This system will not
prevent collisions or lessen collision damage or injury in every situation. Do not use
PCS instead of normal braking operations under any circumstances. Do not attempt
to test the operation of the pre-collision system yourself, as the system may not
operate or engage, possibly leading to an accident. In some situations, such as
when driving in inclement weather such as heavy rain, fog, snow or a sandstorm or
while driving on a curve and for a few seconds after driving on a curve, a vehicle or
pedestrian may not be detected by the radar and camera sensors, preventing the
system from operating or engaging properly.
Refer to the Toyota Owner’s Manual for a list of additional situations in which the
system may not operate properly.Refer to the Toyota Owner’s Manual for additional information on PCS w/PD
operation, settings adjustments, limitations, and precautions before attempting to
use it. Pre-Collision Warning
When the system determines that the possibility of a frontal collision is high, a
buzzer will sound and a warning message will be displayed on the Multi-Information
Display (MID) to urge the driver to take evasive action.
Pre-Collision Brake Assist
If the driver notices the hazard and brakes, the system may provide additional
braking force using Brake Assist. This system may prime the brakes and may apply
greater braking force in relation to how strongly the brake pedal is depressed.
Pre-Collision Braking
If the driver does not brake in a set time and the system determines that the
possibility of a frontal collision with a preceding vehicle is extremely high, the
system may automatically apply the brakes, reducing speed in order to help the
driver reduce the impact and in certain cases avoid the collision.
Pre-Collision System with Pedestrian
Detection (PCS w/PD)
OVERVIEW
FEATURES & OPERATIONS
TOYOTA SAFETY SENSE
SAFETY & EMERGENCY FEATURES
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TOYOTA SAFETY SENSE™
CHANGING PCS SENSITIVITY
FarMiddle
(default) Near
(1) Press “” switches and select from the Multi-Information Display (MID).
(2) Press “
” switches and select “” and then press “”.
(3) Press “
” switches and select “Sensitivity” and then press “” to select the
desired setting.
(4) Press “
” to go back to the menu.
Note: PCS is enabled each time the engine switch is turned to Ignition On.
The system can be disabled/enabled and the alert timing of the system can be
changed. (Alert timing only, brake operation remains the same).
Monocular camera sensor
Millimeter
wave radar
As part of the Pre-Collision System, this function is also designed to first provide an
alert and then automatic braking if needed.
Refer to the Toyota Owner’s Manual for additional limitations and information.Under certain conditions, the PCS system included with the TSS-P package may
also help to detect a pedestrian in front of your vehicle using the in-vehicle camera
and
front grille-mounted radar. The in-vehicle camera of PCS detects a potential
pedestrian based on size, profile, and motion of the detected pedestrian. However,
a pedestrian may not be detected depending on the conditions, including the
surrounding brightness and the motion, posture, size, and angle of the potential
detected pedestrian, preventing the system from operating or engaging.
PCS PEDESTRIAN DETECTION
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DISABLING PRE-COLLISION SYSTEM (PCS)
(1) Press “” switches and select from the Multi-Information Display (MID).
(2) Press “
” switches and select “” from the MID and then press “”.
(3) Press “
” switches and select “PCS on/off” and then press “” to select the
desired setting ON/OFF.
(4) Press “
” to go back to the menu.
Refer to the Toyota Owner’s Manual for additional information on PCS operation,
settings adjustments, limitations, and precautions before attempting to use it.
Lane Departure Alert (LDA)
LDA in TSS-P uses an in-vehicle camera designed to detect visible white and yellow
lane markers in front of the vehicle and the vehicle’s position on the road. If the
system determines that the vehicle is starting to unintentionally deviate from its lane,
the system alerts the driver with an audio and visual alert. When the alerts occur, the
driver must check the surrounding road situation and carefully operate the steering
wheel to move the vehicle back to the center part of their lane.
LDA is designed to function at speeds of approximately 32 mph (50 km/h) or higher
on relatively straight roadways.
OVERVIEW
FEATURES & OPERATIONS
TOYOTA SAFETY SENSE
SAFETY & EMERGENCY FEATURES
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TOYOTA SAFETY SENSE™
TURNING THE LDA SYSTEM ON/OFF
Press the LDA switch to turn the LDA system on. Depress again to turn it off.
Note: Operation of the LDA system and setting adjustments continues in the
same condition regardless of Ignition cycle until changed by the driver or the
system is reset.
Refer to the Toyota Owner’s Manual for additional information on LDA operation,
settings adjustments, limitations, and precautions before attempting to use it.
LANE DEPARTURE ALERT
LDA function display
Lane markers
(2)
(1)
Lane Departure Alert (LDA) indicator flashes orange when operating.
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ADJUSTING LDA ALERT SENSITIVITY
The driver can adjust the sensitivity of the LDA (warning) function from the
Multi-Information Display (MID) customization screen.High - Is designed to warn approximately before the front
tire crosses the lane marker.
Normal - Is designed to warn approximately when the front
tire crosses the lane marker.
LANE DEPARTURE ALERT (CONTINUED)
The LDA function displays when the Multi-Information Display (MID) is switched to
the driving assist system information screen.
(1) The system displays solid white lines on the LDA indicator when visible lane
markers on the road are detected. A side flashes orange to alert the driver when
the vehicle deviates from its lane.
(2) The system displays outlines on the LDA indicator when lane markers on the
road are not detected or the function is temporarily cancelled.
Note: When operation conditions are no longer met, a function may be
temporarily canceled. However, when the operation conditions are met again,
operation of the function is automatically restored. For example, LDA may not
function on the side(s) where white/yellow lines are not detectable.
(1) Press “
” switches and select from the Multi-Information Display (MID).
(2) Press “
” switches and select “” and then press “”.
(3) Press “
” switches and select “Alert sensitivity” and then press “” to select
the desired setting.
(4) Press “
” to go back to the menu.
Note: Operation of the LDA system and setting adjustments continues in the
same condition regardless of Ignition cycle until changed by the driver or the
system is reset.
OVERVIEW
FEATURES & OPERATIONS
TOYOTA SAFETY SENSE
SAFETY & EMERGENCY FEATURES
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TOYOTA SAFETY SENSE™
SWAY WARNING SYSTEM
SWS is a function of LDA and is designed to detect swaying based on the vehicle
location in the lane and the driver’s steering wheel operation. To help prevent
swaying, the system alerts the driver using a buzzer sound and a warning displays
in the MID.
Continuous lane deviations from
swaying.
Gentle swaying from driver’s
inattentiveness.
Acute steering wheel operation after the
number of operations decrease due to driver’s
inattentiveness.
DISABLING LDA SWAY WARNING SYSTEM
ADJUSTING SWAY ALERT SENSITIVITY
(1) Press “” switches and select from the Multi-Information Display (MID).
(2) Press “
” switches and select “” and then press “”.
(3) Press “
” switches and select “Sway warning” and then press “” to select
the desired setting ON/OFF.
(4) Press “
” to go back to the menu.
(1) Press “
” switches and select from the Multi-Information Display (MID).
(2) Press “
” switches and select “” and then press “”.
(3) Press “
” switches and select “SWAY sensitivity” and then press “” to select
the desired setting.
(4) Press “
” to go back to the menu.
Note: Operation of the LDA system and setting adjustments continues in the
same condition regardless of Ignition cycle until changed by the driver or the
system is reset.
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TURNING SYSTEM ON/OFF
ADJUSTING SET SPEED
(1)
(2) (3)
DRCC helps maintain a pre-set distance to a preceding vehicle when the
preceding vehicle is traveling at a lower speed. This mode is always selected first
when the cruise control button is depressed. Constant speed cruise control mode
is also available. DRCC is designed to function at speeds between approximately
30 to 110 MPH and is intended for highway use.
Increase speed
Decrease speed
Cruise control switch
Vehicle will cruise at a set speed, decelerate to maintain selected distance from a
slower vehicle traveling in front and accelerate back up to the selected speed if the
vehicle in front changes lanes or speeds up.

(1) Push the ON-OFF button. The “RADAR READY” and “
” indicator will come on.
(2) Push the lever down to SET speed, push it up to Resume and pull it or depress brake to Cancel.
(3) Push up to increase the set speed, push down to decrease (1 mph [1.6 km/h] or 1 km/h [0.6 mph] increments).
Cancel1
Set
Resume2
Push once: On
Push twice: Off
Refer to page 37 for switching to Constant Speed (Cruise) Control Mode.
1 The set speed may also be cancelled by depressing the brake pedal.2 The set speed may be resumed once vehicle speed exceeds 25 mph (40 km/h).
Dynamic Radar Cruise Control (DRCC)
OVERVIEW
FEATURES & OPERATIONS
TOYOTA SAFETY SENSE
SAFETY & EMERGENCY FEATURES
Display
Set speed
Dynamic Radar Cruise Control
vehicle-to-vehicle distance button
Indicators
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TOYOTA SAFETY SENSE™
ADJUSTING DISTANCE
To change the vehicle-to-
vehicle distance

Push the “
” button
to cycle through the
settings, which will change
progressively.
This mode employs a radar sensor to detect the presence of a preceding vehicle
up to approximately 320 ft (100 m) ahead, determines the current vehicle-to-vehicle
following distance and operates to maintain a preset following distance from the
vehicle ahead. These distances vary based on vehicle speed.
(1) (2) (3)
(1) Constant speed cruising when there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-
vehicle distance can also be set by operating the vehicle-to-vehicle distance
control.
(2) Deceleration cruising and follow-up cruising when a preceding vehicle
driving slower than the set speed appears When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a greater reduction in vehicle speed is
necessary, the system applies the brakes (the brake 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 vehicle-to-vehicle distance set by the driver. A warning
tone warns you when the system cannot decelerate sufficiently to prevent your
vehicle from closing in on the vehicle ahead.
Note: Vehicle-to-vehicle distance will close in when traveling on long downhill
slopes.
Preceding
vehicle mark LONG
(default setting) MIDDLE SHORT
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SWITCHING TO CONSTANT SPEED (CRUISE) CONTROL MODE
SETTING CONSTANT SPEED (CRUISE) CONTROL
Note: When your vehicle is too close to a vehicle ahead, and sufficient automatic
deceleration via the cruise control is not possible, the display will flash and the
buzzer will sound to alert the driver. An example of this would be if another driver
cuts in front of you while you are following a vehicle. Depress the brake pedal to
ensure an appropriate vehicle-to-vehicle distance.
If you are already using DRCC “”, push button again to turn the system off
first, then push and hold button for at least 1.5 seconds to switch.
Note: When the engine is turned off, it will automatically default to DRCC.
(3) 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.
1.5 seconds
DRCC ADJUSTING DISTANCE (CONTINUED)
Refer to the Toyota Owner’s Manual for additional information on DRCC operation,
settings adjustments, limitations, and precautions before attempting to use it.
To adjust speed or cancel, see steps (2) and (3) of ADJUSTING SET SPEED on
page 35.
(1)
OVERVIEW
FEATURES & OPERATIONS
TOYOTA SAFETY SENSE
SAFETY & EMERGENCY FEATURES
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AHB is a safety system designed to help drivers see more of what’s ahead at
nighttime while reducing glare for oncoming drivers. When enabled, AHB uses an
in-vehicle camera to help detect the headlights of oncoming vehicles and tail lights
of preceding vehicles, then automatically switches between high and low beams
as appropriate to provide the most light possible and enhance forward visibility.
By using high beams more frequently, the system may allow earlier detection of
pedestrians and obstacles.
Refer to the Toyota Owner’s Manual for additional information on AHB operation,
settings adjustments, limitations, and precautions before attempting to use it.
Automatic High Beams (AHB)
(1) With the engine switch in IGNITION ON mode, turn the headlight switch to

“
” or “AUTO” position.
(2) Push lever away from you.
(3) Press the “
” switch.

The AHB indicator will come on when the headlights are turned on automatically
to indicate that the system is active.
Note: Pull the lever back toward you to turn the AHB system off.
The AHB indicator will turn off. To turn switch to “
” position and the manual
high beam indicator “
” turns on.
When all of these conditions are met, high beams will be automatically turned on
(after approximately 1 second):
• Vehicle speed is above approximately 21 mph (34 km/h.)
• The area ahead of the vehicle is dark.
• There are no oncoming or preceding vehicles with headlights or tail lights turned
on.
• There are few street lights on the road ahead.
If any of these conditions occur, the system is designed to automatically turn off
high beams:
• Vehicle speed drops below approximately 17 mph (27 km/h.)
• The area ahead of the vehicle is not dark.
• Oncoming or preceding vehicles have headlights or tail lights turned on.
• There are many streetlights on the road ahead.
ACTIVATING THE AHB SYSTEM
CONDITIONS WHERE AHB WILL TURN ON/OFF AUTOMATICALLY
(1) (2)
TOYOTA SAFETY SENSE™
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