2021 TOYOTA 4RUNNER engine

TABLE OF CONTENTS2
4RUNNER (U)For your information....................... 8
Reading this manual .................... 12
How to search .............................. 13
Pictorial index .............................. 14
1-1. For safe use
Before driving ...................... 26
For safe driving ................... 28
Seat belts ............................ 30
SRS airbags ........................ 35
Front passenger occupant classification system ......... 46
Safety information for children ........................ 52
Child restraint systems ........ 53
Installing child restraints ...... 57
Exhaust gas precautions ..... 69
1-2. Emergency assistance Safety Connect.................... 70
1-3. Theft deterrent system Engine immobilizer system............................... 76
Alarm ................................... 79
2. Instrument cluster Warning lights and indicators........................... 82
Gauges and meters............. 88
Multi-information display ..... 90 3-1. Key information
Keys................................... 102
Side doors ......................... 110
3-2. Opening, closing and locking the doors
Smart key system .............. 118
Automatic running boards ............................. 128
Back door .......................... 131
3-3. Adjusting the seats Front seats......................... 136
Rear seats ......................... 139
Driving position memory ........................... 149
Head restraints .................. 153
3-4. Adjusting the steering wheel and mirrors
Steering wheel ................... 156
Inside rear view mirror ....... 158
Outside rear view mirrors ............................. 160
3-5. Opening, closing the windows and
moon roof
Power windows.................. 162
Power back window ........... 166
Moon roof .......................... 170
1For safety and security
2Instrument cluster
3Operation of
each component

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4RUNNER (U)4-1. Before driving
Driving the vehicle ............. 176
Cargo and luggage............ 186
Vehicle load limits ............. 191
Trailer towing..................... 192
Dinghy towing.................... 208
4-2. Driving procedures Engine (ignition) switch (vehicles without a
smart key system) ........... 209
Engine (ignition) switch (vehicles with a
smart key system) ........... 212
Automatic transmission ..... 218
Turn signal lever................ 223
Parking brake .................... 224
4-3. Operating the lights and wipers
Headlight switch ................ 225
Automatic High Beam ....... 230
Fog light switch ................. 234
Windshield wipers and washer ............................ 236
Rear window wiper and washer ............................ 239 4-4. Refueling
Opening the fuel tank cap................................... 242
4-5. Using the driving support systems
Toyota Safety Sense P ...... 245
PCS (Pre-Collision System) ........................... 254
LDA (Lane Departure Alert) ................................ 264
Dynamic radar cruise control.............................. 272
Intuitive parking assist ....... 285
Four-wheel drive system (part-time 4WD
models)............................ 292
Four-wheel drive system (full-time 4WD
models)............................ 296
Active traction control system ............................. 300
AUTO LSD system (2WD models) ................. 302
Rear differential lock system ............................. 304
Downhill assist control system ............................. 307
Crawl Control ..................... 310
Multi-terrain Select............. 313
Driving assist systems ....... 320
4-6. Driving tips Winter driving tips .............. 329
Off-road precautions .......... 333
4Driving

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4RUNNER (U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 392
Cleaning and protecting the vehicle interior ........... 395
6-2. Maintenance Maintenance requirements ................... 398
General maintenance ........ 400
Emission inspection and maintenance (I/M)
programs ......................... 403
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 404
Hood.................................. 407
Engine compartment ......... 408
Tires .................................. 422
Tire inflation pressure........ 436
Wheels .............................. 439
Air conditioning filter .......... 441
Wireless remote control/ electronic key
battery ............................. 443
Checking and replacing fuses ............................... 446
Light bulbs ......................... 449 7-1. Essential information
Emergency flashers ........... 462
If your vehicle has to be stopped in an
emergency....................... 463
If the vehicle is trapped in rising water ...................... 465
7-2. Steps to take in an emergency
If your vehicle needs to be towed .......................... 466
If you think something is wrong............................... 472
Fuel pump shut off system ............................. 473
If a warning light turns on or a warning buzzer
sounds ............................. 474
If a warning message is displayed ......................... 484
If you have a flat tire .......... 489
If the engine will not start ................................. 504
If you cannot operate back door opener ............ 506
If the electronic key does not operate properly
(vehicles with a smart
key system) ..................... 507
If the vehicle battery is discharged ....................... 510
If your vehicle overheats......................... 514
If the vehicle becomes stuck ................................ 517
6Maintenance and care7When trouble arises

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4RUNNER (U)Please note that this manual applies to all models and explains
all equipment,
including options. Therefore, you may find some explanations fo r equipment
not installed on your vehicle.
All specifications provided in this manual are current at the t ime of printing.
However, because of the Toyota policy of continual product impr ovement, we
reserve the right to make changes at any time without notice.
Depending on specifications, the vehicle shown in the illustrat ions may differ
from your vehicle in terms of color and equipment.
Approximately five hours after the engine is turned off, you ma y hear sound
coming from under the vehicle for several minutes. This is the sound of a fuel
evaporation leakage check and, it does not indicate a malfunction.
A wide variety of non-genuine spare parts and accessories for T oyota vehi-
cles are currently available in the market. You should know tha t Toyota does
not warrant these products and is not responsible for their per formance,
repair, or replacement, or for any damage they may cause to, or adverse
effect they may have on, your Toyota vehicle.
This vehicle should not be modified with non-genuine Toyota pro ducts. Modi-
fication with non-genuine Toyota products could affect its perf ormance, safety
or durability, and may even violate governmental regulations. In addition,
damage or performance problems resulting from the modification may not be
covered under warranty.
Also, remodeling like this will have an effect on advanced safe ty equipment
such as Toyota Safety Sense P and there is a danger that it wil l not work
properly or the danger that it may work in situations where it should not be
working.
The installation of a mobile two-way radio system in your vehic le could affect
electronic systems such as:
● Multiport fuel injection system/sequential multiport fuel injection system
● Toyota Safety Sense P
● Cruise control system
● Anti-lock brake system
● SRS airbag system
● Seat belt pretensioner system
Be sure to check with your Toyota dealer for precautionary meas ures or spe-
cial instructions regarding instal lation of a mobile two-way radio system.
For your infor mation
Main Owner’s Manual
Noise from under vehicle afte r turning off the engine
Accessories, spare parts and m odification of your Toyota
Installation of a mobile two-way radio system

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4RUNNER (U)The vehicle is equipped with sophisticated computers that will
record certain
data, such as:
• Engine speed/Electric motor speed (traction motor speed)
• Accelerator status
• Brake status
• Vehicle speed
• Operation status of the driving assist systems
• Images from the camerasYour vehicle is equipped with cameras. Contact your Toyota deal er for the
location of recording cameras.
The recorded data varies according to the vehicle grade level and options
with which it is equipped.
These computers do not record conversations or sounds, and only record
images outside of the vehicle in certain situations.
●Data Transmission
Your vehicle may transmit the data recorded in these computers to Toyota
without notification to you.
●Data usage
Toyota may use the data recorded in this computer to diagnose m alfunc-
tions, conduct research and development, and improve quality.
Toyota will not disclose the recorded data to a third party exc ept:
• With the consent of the vehicle owner or with the consent of the lessee if the vehicle is leased
• In response to an official request by the police, a court of l aw or a govern-
ment agency
• For use by Toyota in a lawsuit
• For research purposes where the data is not tied to a specific vehicle or
vehicle owner
●Recorded image information can be erased by your Toyota dealer.
The image recording function can be disabled. However, if the f unction is
disabled, data from when the system operates will not be available.
●To learn more about the vehicle data collected, used and shared by
Toyota, please visit www.toyota.com/privacyvts/
.
Vehicle data recording

15Pictorial index
4RUNNER (U)
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 422
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 528
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 329
Checking/rotation/tire pressur e warning system . . . . . . . . .P. 422
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 489
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 407
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 407
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 523
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 514
Headlights/daytime running lights . . . . . . . . . . . . . . . . . . . . P. 225
Front side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 225
Front turn signal/parking lights . . . . . . . . . . . . . . . . . . . . . . P. 225
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 234
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 223
Stop/tail lights/rear side marker lights . . . . . . . . . . . . . . . . P. 225
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 225
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 218
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Light bulbs of the exterior lights for driving
(Replacing method: P. 449, Wattages: P. 529)
*: Vehicles with a smart key system
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16Pictorial index
4RUNNER (U)
■Instrument panel
Engine switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 209, 212
Starting the engine/changing the modes . . . . . . . . . . . . . P. 209, 212
Emergency stop of the engine . . . . . . . . . . . . . . . . . . . . . . . . . P. 463
When the engine will not start . . . . . . . . . . . . . . . . . . . . . . . . . P. 504
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 484
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 218
Changing the shift position . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 218
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 466
When the shift lever does not move . . . . . . . . . . . . . . . . . . . . P. 221
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 88
Reading the meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 88
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . P. 82
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . P. 4741
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For safety and security1
4RUNNER (U)1-1. For safe use
Before driving ...................... 26
For safe driving ................... 28
Seat belts ............................ 30
SRS airbags ........................ 35
Front passenger occupant classification system ......... 46
Safety information for children ........................ 52
Child restraint systems........ 53
Installing child restraints...... 57
Exhaust gas precautions..... 69
1-2. Emergency assistance Safety Connect ................... 70
1-3. Theft deterrent system Engine immobilizer system .............................. 76
Alarm................................... 79