2020 TOYOTA 4RUNNER maintenance

4RUNNER (U)
Pictorial indexSearch by illustration
1For safety
and securityMake sure to read through them
2Instrument
clusterHow to read the gauges and meters, the variety of
warning lights and indicators, etc.
3
Operation of
each
componentOpening and closing the doors and windows,
adjustment before driving, etc.
4DrivingOperations and advice which are necessary for
driving
5Interior featuresUsage of the interior features, etc.
6Maintenance
and careCaring for your vehicle and maintenance
procedures
7When trouble
arisesWhat to do in case of malfunction or emergency
8Vehicle
specificationsVehicle specifications, customizable features, etc.
9For ownersReporting safety defects for U.S. owners, and seat
belt and SRS airbag instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

5
1
8 7
6
5
4
3
2
9
4RUNNER (U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 390
Cleaning and protecting the vehicle interior ........... 393
6-2. Maintenance Maintenance requirements ................... 396
General maintenance ........ 398
Emission inspection and maintenance (I/M)
programs ......................... 401
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 402
Hood.................................. 405
Engine compartment ......... 406
Tires .................................. 420
Tire inflation pressure........ 434
Wheels .............................. 437
Air conditioning filter .......... 440
Wireless remote control/ electronic key battery ...... 442
Checking and replacing fuses ............................... 445
Light bulbs ......................... 448 7-1. Essential information
Emergency flashers ........... 464
If your vehicle has to be stopped in
an emergency.................. 465
If the vehicle is trapped in rising water .................. 467
7-2. Steps to take in an emergency
If your vehicle needs to be towed ...................... 468
If you think something is wrong ........................... 475
Fuel pump shut off system ............................. 476
If a warning light turns on or a warning buzzer
sounds ............................. 477
If a warning message is displayed...................... 487
If you have a flat tire .......... 492
If the engine will not start ................................. 507
If you cannot operate back door opener ............ 509
If the electronic key does not operate
properly ........................... 510
If the vehicle battery is discharged ................... 513
If your vehicle overheats......................... 517
If the vehicle becomes stuck ................................ 520
6Maintenance and care7When trouble arises

TABLE OF CONTENTS6
4RUNNER (U)8-1. Specifications
Maintenance data (fuel, oil level, etc.) .......... 522
Fuel information ................ 532
Tire information ................. 535
8-2. Customization Customizable features ...... 547
8-3. Items to initialize Items to initialize................ 560 Reporting safety defects for
U.S. owners ............................. 562
Seat belt instructions for Canadian owners
(in French)................................ 563
SRS airbag instructions for Canadian owners
(in French)................................ 565
8Vehicle specifications9For owners

76
4RUNNER (U)
1-3. Theft deterrent system
Vehicles without a smart key system
The indicator light flashes after
the key has been removed from
the engine switch to indicate that
the system is operating.
The indicator light stops flashing
after the registered key has been
inserted into the engine switch to
indicate that the system has been
canceled.
Vehicles with a smart key system
The indicator light flashes aft er the engine switch has been tu rned off
to indicate that the system is operating.
The indicator light stops flashi ng after the engine switch has been
turned to ACCESSORY or IGNITION ON mode to indicate that the
system has been canceled.
■ System maintenance
The vehicle has a maintenance-free type engine immobilizer syst em.
■ Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic ob ject
● If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
Engine immobilizer system
The vehicle’s keys ha ve built-in transponder chips that prevent
the engine from starting if a key has not been previously regis -
tered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehi-
cle.
This system is designed to help prevent vehicle theft but does
not guarantee absolute security against all vehicle thefts.

801-3. Theft deterrent system
4RUNNER (U)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■ Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft , make sure of
the following:
● Nobody is in the vehicle.
● The windows and moon roof are closed before the alarm is set.
● No valuables or other personal items are left in the vehicle.
■ Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■ Alarm-operated door lock
●When the alarm is operating, the doors are locked automatically to prevent
intruders.
● Do not leave the key inside the vehicle when the alarm is operating, and
make sure the key is not inside the vehicle when recharging or replacing the
battery.
●
A person inside the vehicle opens a door
or the hood.
● The battery is recharged or replaced
when the vehicle is locked.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper
operation of the system cannot be guaranteed.

2044-1. Before driving
4RUNNER (U)■
Before towing
Check that the following conditions are met:
●Ensure that your vehicle’s tires are properly inflated. ( P. 530)
● Trailer tires are inflated according to the trailer manufacture r’s recommen-
dation.
● All trailer lights work as required by law.
● All lights work each time you connect them.
● The trailer ball is set at the proper height for the coupler on the trailer.
● The trailer is level when it is hitched.
Do not drive if the trailer is not level, and check for imprope r tongue weight,
overloading, worn suspension, or other possible causes.
● The trailer cargo is securely loaded.
● The rear view mirrors conform to all applicable federal, state/provincial or
local regulations. If they do not, install rear view mirrors ap propriate for tow-
ing purposes.
■ Break-in schedule
If your vehicle is new or equipped with any new power train com ponents
(such as an engine, transmission, differential or wheel bearing ), Toyota rec-
ommends that you do not tow a trailer until the vehicle has bee n driven for
over 500 miles (800 km).
After the vehicle has been driven for over 500 miles (800 km), you can start
towing. However, for the next 500 miles (800 km), drive the veh icle at a speed
of less than 45 mph (72 km/h) when towing a trailer, and avoid full throttle
acceleration.
■ Maintenance
●If you tow a trailer, your vehicle will require more frequent m aintenance due
to the additional load. (See “Scheduled Maintenance Guide” or “ Owner’s
Manual Supplement”.)
● Retighten the fixing bolts of the towing ball and bracket after approximately
600 miles (1000 km) of trailer towing.
■ If trailer sway occurs
One or more factors (crosswinds, passing vehicles, rough roads, etc.) can
adversely affect handling of your vehicle and trailer, causing instability.
● If trailer swaying occurs:
• Firmly grip the steering wheel. Steer straight ahead.
Do not try to control trailer swaying by turning the steering w heel.
• Begin releasing the accelerator pedal immediately but very gra dually to
reduce speed.
Do not increase speed. Do not apply vehicle brakes.
If you make no extreme correction with the steering or brakes, your vehicle
and trailer should stabilize. (if enabled, Trailer Sway Control can also help to
stabilize the vehicle and trailer.)

3384-6. Driving tips
4RUNNER (U)
NOTICE
■To prevent water damage
Take all necessary safety measures to ensure that water damage to the
engine or other components does not occur.
● Water entering the engine air intake will cause severe engine d amage.
● Water entering the automatic transmission will cause deteriorat ion in shift
quality, locking up of your transmission accompanied by vibrati on, and ulti-
mately damage.
● Water can wash the grease from wheel bearings, causing rusting and pre-
mature failure, and may also enter the differentials, transmission and
transfer case, reducing the gear oil’s lubricating qualities.
■ When you drive through water
If driving through water, such as when crossing shallow streams , first check
the depth of the water and the bottom of the riverbed for firmn ess. Drive
slowly and avoid deep water.
■ Inspection after off-road driving
● Sand and mud that has accumulated in brake drums and around bra ke
discs may affect braking efficiency and may damage brake system compo-
nents.
● Always perform a maintenance inspection after each day of off-r oad driv-
ing that has taken you through rough terrain, sand, mud, or wat er. For
scheduled maintenance information, refer to the “Scheduled Main tenance
Guide” or “Owner’s Manual Supplement”.

389
Maintenance and care6
4RUNNER (U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 390
Cleaning and protecting the vehicle interior ........... 393
6-2. Maintenance Maintenance requirements ................... 396
General maintenance........ 398
Emission inspection and maintenance (I/M)
programs......................... 401
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 402
Hood ................................. 405
Engine compartment ......... 406
Tires .................................. 420
Tire inflation pressure ....... 434
Wheels .............................. 437
Air conditioning filter.......... 440
Wireless remote control/ electronic key battery ...... 442
Checking and replacing fuses ............................... 445
Light bulbs......................... 448