2020 TOYOTA 4RUNNER check engine

5117-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Toyota emblem side
of the electronic key to the
engine switch.
When the electronic key is
detected, a buzzer sounds and the
engine switch will turn to IGNITION
ON mode.
When the smart key system is
deactivated in customization set-
ting, the engine switch will turn to
ACCESSORY mode.
Firmly depress the brake pedal and check that is displayed
on the multi-information display.
Press the engine switch shortly and firmly.
In the event that the engine still cannot be started, contact your Toyota
dealer.
■ Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when
stopping the engine.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommende d that the
electronic key battery be replaced immediately when the battery is depleted.
( P. 443)
■ Changing engine switch modes
Within 10 seconds of the buzzer sounding, release the brake ped al and press
the engine switch.
The engine does not start and modes will be changed each time t he switch is
pressed.( P. 213)
■ When the electronic key does not work properly
●Make sure that the smart key system has not been deactivated in the cus-
tomization setting. If it is off, turn the function on.
(Customizable features: P. 547)
● Check if battery-saving mode is set. If it is set, cancel the f unction.
( P. 121)
Starting the engine
1
2
3
4

5187-2. Steps to take in an emergency
4RUNNER (U)
Add engine coolant if neces-
sary. (P. 407)
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Start the engine to check that the radiator cooling fan operate and
to check for coolant leaks from the radiator or hoses.
If the fan are not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan are operating:
Have the vehicle ins pected at the nearest Toyota dealer.
5
WARNING
■When inspecting under th e hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the ho od until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing (especially a tie, a scarf or a muffler ) away from
the fans and belts.
6
7
● Do not loosen the radiator cap and the
coolant reservoir cap while the engine
and radiator are hot.
High temperature steam or coolant
could spray out.

5258-1. Specifications
8
Vehicle specifications
4RUNNER (U)
*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. Warm up and turn off the engine, wait more than 5 minutes,
and check the oil level on the dipstick.
■
Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to sat -
isfy the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice
for good fuel economy and
good starting in cold weather.
If SAE 0W-20 is not available,
SAE 5W-20 oil may be used.
However, it must be replaced
with SAE 0W-20 at the next oil
change.
Oil viscosity (0W-20 is expl ained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows cold startability. Oils wi th a lower value before the W allow
for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the vi scosity characteristic of the oil
when the oil is at high temperature. An oil with a higher visco sity
(one with a higher value) may be better suited if the vehicle i s
operated at high speeds, or un der extreme load conditions.
Lubrication system
Oil capacity
(Drain and refill  reference
*)
With filter
Without filter6.6 qt. (6.2 L, 5.5 Imp. qt.)
6.0 qt. (5.7 L, 5.0 Imp. qt.)
Outside temperature

5278-1. Specifications
8
Vehicle specifications
4RUNNER (U)
*: Voltage checked 20 minutes after the engine and all the lights are turned
off.
*: Your Toyota vehicle is filled with “Toyota Genuine Transfer Ge ar oil LF” at
the factory. Use Toyota approved “Toyota Genuine Transfer Gear oil LF” or
an equivalent of matching quality to satisfy the above specific ation. Please
contact your Toyota dealer for further details.
Electrical system
Battery
Open voltage* at
68 F (20 C):12.3 V or higher
If the voltage is lower than the standard
value, charge the battery.
Charging rates5 A max.
Transfer (4WD models)
Oil capacity
Part-time 4WD models
1.1 qt. (1.0 L, 0.9 Imp. qt.)
Full-time 4WD models
1.5 qt. (1.4 L, 1.2 Imp. qt.)
Oil type*Toyota Genuine Transfer gear oil LF or
equivalent
Recommended oil viscositySAE 75W

576
4RUNNER (U)
What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your keys or mechanical keys, new genuine mechanical keys
can be made by your Toyota dealer. ( P. 105)
●If you lose your keys or electronic keys, the risk of vehicle t heft increases
significantly. Contact your Toyota dealer immediately. ( P. 109)
●Is the key battery weak or depleted? (P. 442)
●Vehicles with a smart key system:
Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 213)
●Vehicles with a smart key system:
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
●The function may not operate properly due to the condition of t he radio
wave. ( P. 122)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. ( P. 114)
If you have a problem, check the following before contacting
your Toyota dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

579What to do if... (Troubleshooting)
4RUNNER (U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts?
(P. 480)
●The brake system warning light is on
Is the parking brake released? ( P. 224)
●The open door warning indicator is on
Are all the doors closed? (P. 110, 131)
Depending on the situation, other types of warning buzzer may a lso sound.
( P. 477, 487)

●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 79)
To stop the alarm, turn the engine switch to IGNITION ON mode ( vehicles
with a smart key system) or start the engine.
●Is the electronic key left inside the vehicle?
Check the message on the multi-information display.
●When a warning light turns on, refer to P. 477.
●When a warning light turns on or a warning message or indicator is dis-
played, refer to P. 477, 487.
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds w hen leaving the vehicle
(vehicles with a smart key system)
A warning light turns on or a warning message is displayed

585Alphabetical index
4RUNNER (U)
Emergency flashers ................ 464
EngineACCESSORY mode ............. 213
Compartment ........................ 406
Engine switch................ 209, 212
Hood ..................................... 405
How to start the engine......................... 209, 212
Identification number ............ 523
If the engine will not start ...... 507
Ignition switch (engine switch) ........... 209, 212
Overheating .......................... 517
Engine coolant ......................... 410
Capacity ................................ 526
Checking ............................... 410
Preparing and checking before winter....................... 330
Engine coolant temperature gauge........................................ 88
Engine immobilizer system ...... 76
Engine oil ................................. 408 Capacity ................................ 525
Checking ............................... 408
Preparing and checking
before winter....................... 330
Engine switch .................. 209, 212
Event data recorder (EDR) ........ 10 Flat tire ..................................... 492
Floor mats .................................. 26
Fluid
Automatic transmission ........ 529
Brake .................................... 529
Power steering...................... 530
Washer ................................. 418
Fog lights ................................. 235 Replacing light bulbs ............ 448
Switch ................................... 235
Wattage ................................ 531
Four-wheel drive system............................ 293, 297
Front passenger occupant classification system .............. 46
Front personal lights............... 356
Front seats ............................... 136
Adjustment............................ 136
Cleaning ............................... 393
Correct driving posture ........... 28
Driving position memory ....... 149
Head restraints ..................... 153
Seat heaters ......................... 353
Seat position memory ........... 149
Seat ventilators ..................... 353F

593Alphabetical index
4RUNNER (U)
Tachometer ................................ 88
Tail lights .................................. 225Light switch ........................... 225
Telephone switches
*
Theft deterrent system
Alarm ...................................... 79
Engine immobilizer system ..... 76
Tire inflation pressure ............. 434 Maintenance data ................. 530
Warning light ......................... 481
Tire information ....................... 535 Glossary................................ 541
Size ....................................... 537
Tire identification number ..... 536
Uniform Tire Quality Grading............................... 539
Tire pressure warning system .................................... 422 Function ................................ 422
Installing tire pressure warning
valves and transmitters ...... 423
Registering ID codes ............ 424
Warning light ......................... 481 Tires .......................................... 420
Chains .................................. 332
Checking............................... 420
If you have a flat tire ............. 492
Inflation pressure .................. 530
Information............................ 535
Replacing.............................. 492
Rotating tires ........................ 421
Size....................................... 530
Snow tires ............................. 333
Spare tire .............................. 492
Tire pressure warning
system .......... ...................... 422
Warning light......................... 481
Tools ......................................... 493
Top tether strap ......................... 66
Total load capacity .................. 191
Towing Dinghy towing ....................... 208
Emergency towing ................ 470
Trailer towing ........................ 192
Toyota Safety Sense P ............ 246 Automatic High Beam ........... 231
Dynamic radar cruise
control ................................ 273
LDA (Lane Departure Alert) ....... 265
PCS (Pre-Collision System) ....... 254
T
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.