audio TOYOTA 4RUNNER 2021 Owners Manual (in English)

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4RUNNER (U)What to do if...
(Troubleshooting) .................... 574
Alphabetical index...................... 579
Index
For vehicles with a audio/navigation system, refer to the “NAVI GATION
AND MULTIMEDIA SYSTEM OWNER’S MANUAL” for information regard-
ing the audio/navigation system.

17Pictorial index
4RUNNER (U)Multi-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 90
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 90
When the warning messages are displayed . . . . . . . . . . . . . . P. 484
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 224
Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 224
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 330
Warning buzzer/message . . . . . . . . . . . . . . . . . . . . . . . . P. 474, 484
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 223
Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 225
Headlights/parking lights/tail lights/daytime running lights . .
. . P. 225
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 234
Windshield wiper and washer switch . . . . . . . . . . . . . . . . . P. 236
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 236
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 420
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 462
Hood lock release lever. . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 407
Tilt and telescopic steering lock release lever . . . . . . . . . . P. 156
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . P. 340, 347
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 340, 347
Rear window defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 342, 349
Audio/Navigation system
*
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 373
*: Refer to “NAVIGATION AND MULT IMEDIA SYSTEM OWNER’S MANUAL”.
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20Pictorial index
4RUNNER (U)Audio remote control switches
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Talk switch*
Meter control switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 91
Cruise control switch
Dynamic radar cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . P. 272
LDA (Lane Departure Alert) switch. . . . . . . . . . . . . . . . . . . . P. 264
Vehicle-to-vehicle distance switch . . . . . . . . . . . . . . . . . . . . P. 279
Telephone switches
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922. Instrument cluster
4RUNNER (U)
Drive information
Select to display various drive data. (P. 93)
Vehicle information display
Select to display the vehicle information. ( P. 95)
Navigation system-linked display (if equipped)
Select to display the following navigation system-linked information.
• Route guidance
• Compass display (north-up display/heading-up display)
Audio system-linked display (if equipped)
Select to enable selection of an audio source or track on the d isplay
using the meter control switches.
Driving assist system information
Select to display the operational status of the following syste ms:
• Dynamic radar cruise control ( P. 272)
• LDA (Lane Departure Alert) ( P. 264)
Warning message display
Select to display warning messages and measures to be taken if a
malfunction is detected. ( P. 484)
• When there are no current warning messages, “No Messages” is displayed.
• When there are multiple warning messages, or can be used to switch the displayed warning message.
Settings display
Select to change the meter display settings and the operation set-
tings of some vehicle functions. ( P. 95)
Menu icons

1093-1. Key information
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Operation of each component
4RUNNER (U)
NOTICE
■To prevent key damage
● Do not drop the keys, subject them to strong shocks or bend them.
● Do not expose the keys to high temperatures for long periods of time.
● Do not get the keys wet or wash them in an ultrasonic washer et c.
● Do not attach metallic or magnetic materials to the keys or pla ce the keys
close to such materials.
● Do not disassemble the keys.
● Do not attach a sticker or anything else to the surface of the electronic key
and key (with a wireless remote control function).
● Vehicles with a smart key system: Do not place the keys near ob jects that
produce magnetic fields, such as TVs, audio systems and inducti on cook-
ers, or medical electrical equipment, such as low-frequency the rapy equip-
ment.
■ Carrying the electronic key on your person (vehicles with a sma rt key
system)
Carry the electronic key 3.9 in. (10 cm) or more away from elec tric appli-
ances that are turned on. Radio waves emitted from electric app liances
within 3.9 in. (10 cm) of the electronic key may interfere with the key, caus-
ing the key to not function properly.
■ In case of a smart key system malfunction or other key-related prob-
lems (vehicles with a smart key system)
Take your vehicle with all the electronic keys provided with yo ur vehicle to
your Toyota dealer.
■ When an electronic key is lost (vehicles with a smart key system)
If the electronic key remains lost, the risk of vehicle theft i ncreases signifi-
cantly. Visit your Toyota dealer immediately with all remaining electronic
keys that was provided with your vehicle.

1223-2. Opening, closing and locking the doors
4RUNNER (U)■
Conditions affecting operation
The smart key system uses weak radio waves. In the following si tuations, the
communication between the electronic key and the vehicle may be affected,
preventing the smart key system, wireless remote control and en gine immobi-
lizer system from operating properly. (Ways of coping: P. 507)
● When the electronic key battery is depleted
● Near a TV tower, electric power plant, gas station, radio stati on, large dis-
play, airport or other facility that generates strong radio wav es or electrical
noise
● When carrying a portable radio, cellular phone, cordless phone or other
wireless communication device
● When the electronic key is in contact with, or is covered by the following
metallic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
● When multiple electronic keys are in the vicinity
● When other wireless keys (that emit radio waves) are being used nearby
● When carrying the electronic key together with the following devices that
emit radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
● If window tint with a metallic content or metallic objects are attached to the
back window
● When the electronic key is placed near a battery charger or ele ctronic
devices
● When the vehicle is parked in a pay parking spot where radio wa ves are
emitted.
If the doors cannot be locked/unlocked using the smart key syst em, lock/
unlock the doors by performing any of the following:
● Bring the electronic key close to either front door handle and operate the
entry function.
● Operate the wireless remote control.
If the doors cannot be locked/unlocked using the above methods, use the
mechanical key. ( P. 507)
If the engine cannot be started using the smart key system, ref er to P. 508.

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Driving
4RUNNER (U)
4-2. Driving procedures
Check that the parking brake is set.
Check that the shift lever is set in P.
Firmly depress the brake pedal.
Turn the engine switch to the “S TART” position to start the engine.
“LOCK”
The steering wheel is locked and
the key can be removed. (The key
can be removed only when the
shift lever is in P.)
“ACC”
Some electrical components such
as the audio system can be used.
“ON”
All electrical components can be used.
“START”
For starting the engine.
Engine (ignition) switch (vehicles without a
smart key system)
Starting the engine
Changing the engine switch positions
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2134-2. Driving procedures
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Driving
4RUNNER (U)
Stop the vehicle.
Set the parking brake (
P. 224), and shift the shift lever to P.
Press the engine switch.
Release the brake pedal and check that “ACCESSORY” or “IGNI-
TION ON” is not shown on the meter.
Modes can be changed by pressing the engine switch with brake
pedal released. (The mode changes each time the switch is pressed.)
Off
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The emergency flashers can be
used.
ACCESSORY mode
Some electrical components such
as the audio system can be used.
“ACCESSORY” will be displayed
on the multi-information display.
IGNITION ON mode
All electrical components can be
used.
“IGNITION ON” will be displayed
on the multi-information display.
*: If the shift lever is in a position other than P when turning off the engine, the engine switch will be turned to ACCESSORY mode, not to off.
Stopping the engine
Changing engine switch modes
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2694-5. Using the driving support systems
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Driving
4RUNNER (U)
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the following conditions are met.
• LDA is turned on.
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approximately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or around a gentle curve with a radius
of more than approximately 492 ft. (150 m).
• No system malfunctions are detected. ( P. 271)
● Vehicle sway warning function
This function operates when all of the following conditions are met.
• Setting for “Sway Warning” in of the multi-information display is set to “On”. ( P. 96)
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• Width of traffic lane is approximately 9.8 ft. (3 m) or more.
• No system malfunctions are detected. ( P. 271)
■ Temporary cancellation of functions
When the operation conditions are no longer met, a function may be tempo-
rarily canceled. However, when the operation conditions are met again, oper-
ation of the function is automatically restored. ( P. 269)
■ Lane departure alert function
The warning buzzer may be difficult to hear due to external noi se, audio play-
back, etc.
■ Vehicle sway warning function
Depending on the vehicle and road conditions, the warning may n ot operate.
■ White (yellow) lines are only on one side of road
The LDA system will not operate for the side on which white (yellow) lines
could not be recognized.
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 simultaneously dis-
played on the multi-information display.

2904-5. Using the driving support systems
4RUNNER (U)●
The shape of the obstacle may prevent the sensor from detecting it. Pay
particular attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your vehicle
● The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection
distance may shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sen sor.
• There will be a short delay between obstacle detection and dis play. Even
at slow speeds, there is a possibility that the obstacle will c ome within the
sensor’s detection areas before the display is shown and the wa rning
beep sounds.
• Thin posts or objects lower than the sensor may not be detected for colli-
sion when approached, even if they have been detected once.
• It might be difficult to hear beeps due to the volume of audio system or air
flow noise of air conditioning system.
■ When the system malfunctions
●If “Clean park sonar” is shown
A sensor may be dirty or covered with snow or ice. In such case s, if it is
removed from the sensor, the system should return to normal. Al so, due to
the sensor being frozen at low temperatures, a malfunction disp lay may
appear or an obstacle may not be detected. If the sensor thaws out, the sys-
tem should return to normal.
● If “Check park sonar system” is shown
Depending on the malfunction of the sensor, the device may not be working
normally. Have the vehicle inspected by your Toyota dealer.
■ Customization that can be configured at Toyota dealer
Some functions can be customized. (Customizable features P. 545)
■ Certification
For vehicles sold in the U.S.A.
This device complies with Part 15 of the FCC Rules. Operation i s subject to
the following two conditions; (1) This device may not cause har mful interfer-
ence, and (2) This device must accept any interference received, including
interference that may cause undesired operation.
For vehicles sold in Canada
This ISM device complies with Canadian ICES-001.
Cet appareil ISM est conforme a la norme NMB-001 du Canada.