2020 TOYOTA 4RUNNER warning lights

4476-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been repla ced, a bulb may
need replacement. ( P. 448)
● If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.
■ If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness f rom damage.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
● Never use a fuse of a higher amperage rating than that indicate d, or use
any other object in place of a fuse.
● Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
● Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired b y your
Toyota dealer as soon as possible.

4626-3. Do-it-yourself maintenance
4RUNNER (U)■
Replacing the following bulbs
If any of the lights listed below has burnt out, have it replac
ed by
your Toyota dealer.
● Fog light (right side)
● Side turn signal lights
● Stop/tail lights
● Rear side marker lights
● High mounted stoplight
● Outer foot lights (if equipped)
■LED light bulbs
The side turn signal lights, stop/tail lights, rear side marker lights, high
mounted stoplight and outer foot lights consist of a number of LEDs. If any
LEDs burn out, take your vehicle to your Toyota dealer to have the light
replaced.
■ Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the lens does not indicate a
malfunction. Contact your Toyota dealer for more information in the following
situations:
● Large drops of water have built up on the inside of the lens.
● Water has built up inside the lens.
WARNING
■Replacing light bulbs
● Turn off the lights. Do not attempt to replace the bulb immedia tely after
turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clea n dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Fa ilure to do so
may result in heat damage, fire, or water entering the headligh t unit. This
may damage the headlights or cause condensation to build up on the lens.
■ To prevent damage or fire
● Make sure bulbs are fully seated and locked.
● Check the wattage of the bulb before installing to prevent heat damage.

4827-2. Steps to take in an emergency
4RUNNER (U)
*1: Parking brake engaged warning buzzer:A buzzer will sound if the vehicle is driven at a speed of appr oximately 3
mph (5 km/h) or more.
*2: Open door warning buzzer: The open door warning buzzer sounds to alert one or more of the doors is
not fully closed (with the vehicle having reached a speed of 3 mph [5 km/h]).
*3: Driver’s seat belt buzzer:
The driver's seat belt warning buzzer sounds to alert the drive r that his or
her seat belt is not fastened. Once the engine switch is turned to ON, the
buzzer sounds. If the seat belt is still unfastened, the buzzer sounds inter-
mittently for a certain period of time after the vehicle reache s a certain
speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front
passenger that his or her seat belt is not fastened. If the sea t belt is unfas-
tened, the buzzer sounds intermittently for a certain period of time after the
vehicle reaches a certain speed.
*4: This light illuminates on the multi-information display.
■ SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (rear), safing
sensor (rear), driver's seat belt buckle switch, front passenger occupant clas-
sification system (ECU and sensors), “AIR BAG ON” and “AIR BAG OFF”
indicator lights, front passenger's seat belt buckle switch, se at belt preten-
sioners, airbags, interconnecting wiring and power sources. (P. 3 5 )
■ Key reminder buzzer (vehicles without a smart key system)
The buzzer indicates that the key has not been removed with the engine off
and the driver’s door opened.
■ Open moon roof reminder buzzer (if equipped)
The buzzer indicates that the moon roof is not fully closed with the engine off
and the driver’s door opened.
■ Front passenger detection senso r, passenger seat belt reminder and
warning buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.

4887-2. Steps to take in an emergency
4RUNNER (U)
The warning lights and warning buzzers operate as follows depending
on the content of the message. If a message indicates the need for
inspection by a dealer, have the vehicle inspected by your Toyota
dealer immediately.
The operation of the warning lights and warning buzzers may dif fer
from those stated. in this case, perform the correction procedu re
according to the displayed message.
*: A buzzer sounds the first time a message is shown on the multi -informa-
tion display.
Messages and warnings
System
warning lightWarning
buzzer
*Warning
Comes on Comes on Sounds Indicates an important situation, such
as when a system related to driving is
malfunctioning or that danger may
result if the correction procedure is not
performed
Comes onSounds
Comes on
or flashesSounds
Indicates an important situation, such
as when the systems shown on the
multi-information display may be mal-
functioning
FlashesSounds
Indicates a situation, such as when
damage to the vehicle or danger may
result
Comes onDoes not sound
Indicates a condition, such as mal-
function of electrical components, their
condition, or indicates the need for
maintenance
FlashesDoes not sound
Indicates a situation, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly

4897-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along wit h a message
or image shown on the multi-information display.
● Malfunction in the ABS
The ABS warning light comes on. ( P. 478)
● Indicates that the PCS (Pre-Collision System) is not currently functional
The PCS warning light comes on or flashes. ( P. 480)
● Malfunction in the tire pressure warning system
The tire pressure warning light comes on. ( P. 481)
■ If a message instructing to refer to the Owner’s Manual is disp layed
● If the following message is shown, there may be a malfunction.
Immediately stop the vehicle in a safe place and contact your T oyota dealer.
Continuing to drive the vehicle may be dangerous.
• “Braking Power Low Stop in a Safe Place See Owner’s Manual”
• “Oil Pressure Low Stop in a Safe Place See Owner’s Manual”
● If “Engine Coolant Temp High Stop in a Safe Place See Owner’s M anual” is
displayed, follow the instructions accordingly. ( P. 517)
● If “Front Camera Unavailable See Owner’s Manual” is displayed, follow the
instructions accordingly. ( P. 264, 487)
● If the following message is shown, there may be a malfunction.
Immediately have the vehicle inspected by your Toyota dealer.
• “Smart Key System Malfunction See Owner’s Manual”
■ If “High transmission fluid temperature” is shown, it indicates that the
automatic transmission fluid temperature is too high.
Immediately stop the vehicle in a safe place, shift the shift l ever to P and wait
until the warning message and light go off. If the warning message and light
go off, you may start the vehicle again. If the warning message and light do
not go off, contact your Toyota dealer.

582Alphabetical index
4RUNNER (U)
Back doorBack door.............................. 131
Back window ......................... 166
Smart key system ................. 118
Wireless remote control ........ 110
Back window ............................ 166
Back-up lights Replacing light bulbs............. 460
Wattage ................................ 531
Battery ...................................... 415
Battery checking ................... 415
If the vehicle battery is discharged ...................... 513
Preparing and checking before winter....................... 330
Warning light ......................... 477
Bottle holders .......................... 364
Brake Fluid ...................................... 412
Parking brake........................ 224
Warning light ......................... 477
Brake assist ............................. 321
Brake override system ............ 177
Break-in tips ............................. 178
Brightness control Instrument panel light
control................................... 89 Care .................................. 390, 393
Aluminum wheels ................. 391
Exterior ................................. 390
Interior .................................. 393
Seat belts.............................. 394
Cargo capacity......................... 191
Cargo hooks ............................ 365
Cargo net hooks ...................... 366
Center differential lock ........... 297
Chains ...................................... 332
Child restraint system............... 53 Booster seats, definition ......... 54
Booster seats, installation....... 65
Convertible seats, definition ... 54
Convertible seats, installation ............................ 62
Front passenger occupant classification syst em ............ 46
Infant seats, definition............. 54
Infant seats, installation .......... 62
Installing CRS with LATCH anchors ............ 59
Installing CRS with seat belts...................................... 62
Installing CRS with top tether strap.............. 66
BC

583Alphabetical index
4RUNNER (U)
Child safety ................................ 52Airbag precautions .................. 37
Back door precautions .......... 133
Battery precautions ....... 416, 516
Child restraint system ............. 53
How your child should
wear the seat belt ................. 31
Installing child restraints ......... 57
Moon roof precautions .......... 173
Power window lock switch .... 162
Power window precautions ... 165
Rear door child-protectors .... 114
Removed electronic key battery precautions ...... 444
Seat belt extender precautions ........................... 34
Seat belt precautions .............. 56
Seat heater precautions........ 353
Child-protectors....................... 114
Cleaning ........................... 390, 393 Aluminum wheels.................. 391
Exterior ................................. 390
Interior................................... 393
Seat belts .............................. 394
Clock ......................................... 371
Compass .................................... 92
Condenser ................................ 412
Console box ............................. 359
Cooling system Engine overheating ............... 517
Crawl Control ........................... 311
Cruise control Dynamic radar cruise
control................................. 273
Cup holders.............................. 360
Curtain shield airbags ............... 35
Customizable features ............ 547 Daytime running light
system.................................... 229
Defogger Front windshield ................... 348
Outside rear view
mirrors ........................ 342, 348
Rear window ................. 342, 348
Dimension ................................ 522
Dinghy towing.......................... 208
Display Dynamic radar cruise control ................................ 273
LDA
(Lane Departure Alert) ....... 265
Multi-information display ......... 90
Trip information....................... 90
Warning message................. 487
Do-it-yourself maintenance .... 402
Door courtesy lights Wattage ................................ 531
Doors Automatic door locking
and unlocking system......... 115
Back door ............................. 131
Door lock ...................... 113, 132
Door windows ....................... 162
Open door warning buzzer ... 120
Open door warning light ....... 479
Outside rear view mirrors ..... 160
Rear door child-protector ...... 114
Side doors ............................ 110D

586Alphabetical index
4RUNNER (U)
Front side marker lights.......... 225Light switch ........................... 225
Replacing light bulbs............. 455
Wattage ................................ 531
Front turn signal lights ........... 223
Replacing light bulbs............. 453
Turn signal lever ................... 223
Wattage ................................ 531
Fuel ........................................... 243 Capacity ................................ 524
Fuel gauge .............................. 88
Fuel pump shut off system.... 476
Information ............................ 532
Refueling............................... 243
Type .............................. 243, 524
Warning light ......................... 480
Fuel filler door.......................... 243
Refueling............................... 243
Fuel pump shut off system ..... 476
Fuses ........................................ 445
Garage door opener ................ 382
Gauges ....................................... 88
Glove box ................................. 359
Grocery bag hooks .................. 368 Head restraints ........................ 153
Headlights ................................ 225
Automatic High Beam system .......... ...................... 231
Light switch ........................... 225
Replacing light bulbs................... 450, 452, 462
Wattage ................................ 531
Heaters Air conditioning
system ....... ................. 340, 346
Outside rear view mirrors ....................... 342, 348
Seat heaters ......................... 353
Hill-start assist control ........... 322
Hood ......................................... 405
Hooks Cargo hooks ......................... 365
Cargo net hooks ................... 366
Grocery bag hooks ............... 368
Retaining hooks (floor mat) .... 26
Horn .......................................... 156
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