2021 TOYOTA 4RUNNER coolant

832. Instrument cluster
2
Instrument cluster
4RUNNER (U)
Warning lights inform the driver of malfunctions in the indicated vehi-
cle’s systems.
Warning lights
*1
(U.S.A.)
Brake system warning
light ( P. 474)*1
Slip indicator ( P. 475)
*1
(Canada)
Brake system warning
light (P. 474)*3
(if equipped)
Four-wheel drive indica-
tor light ( P. 476)
*5High coolant tempera-
ture warning light
(P. 474)*3
(if equipped)
Low speed four-wheel
drive indicator light
(P. 476)
*1
Charging system warn-
ing light ( P. 474)*3
(if equipped)
Rear differential lock
indicator light ( P. 475)
*1
(U.S.A.)
Malfunction indicator
lamp ( P. 475)*3
(if equipped)
Center differential lock
indicator light ( P. 476)
*1
(Canada)
Malfunction indicator
lamp ( P. 475)*2, 4, 5
(if equipped)
Multi-terrain Select indi-
cator light ( P. 476)
*1SRS warning light
(P. 475)*5Brake Override System/
Drive-Start Control/
warning light ( P. 477)
*1
(U.S.A.)
ABS warning light
(P. 475)
(U.S.A.)
Parking brake indicator
(P. 477)
*1
(Canada)
ABS warning light
(P. 475)
(Canada)
Parking brake indicator
(P. 477)

882. Instrument cluster
4RUNNER (U)
Tachometer
Displays the engine speed in revolutions per minute
Engine coolant temperature gauge
Displays the engine coolant temperature
Multi-information display
Presents the driver with a variety of vehicle data (P. 90)
Fuel gauge
Displays the quantity of fuel remaining in the tank
Speedometer
Displays the vehicle speed
Odometer/trip meter display change button
Switches the trip information.
Odometer/trip meter display
Shift position and shift range
Displays the selected shift position or selected shift range ( P. 218)
Gauges and meters
The displayed content may differ depending on the type of
meter.
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892. Instrument cluster
2
Instrument cluster
4RUNNER (U)
Switches between odometer and
trip meter displays. When the trip
meter is displayed, pressing and
holding the button will reset the
trip meter.
The brightness of the instrumen t panel lights can be adjusted.
Brighter
Darker
■ The meters and display illuminate when
Vehicles without a smart key system
The engine switch is in the “ON” position.
Vehicles with a smart key system
The engine switch is in IGNITION ON mode.
■ The brightness of the instrument panel lights
When the headlight switch is turned to on, the brightness will be reduced
slightly unless the control dial is turned fully upward.
Changing the display
Instrument panel light control
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2
NOTICE
■ To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. ( P. 514)

2024-1. Before driving
4RUNNER (U)
●Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before maki ng
turn.
● Note that when making a turn, the trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by mak ing
a wider than normal turning radius.
● Slow down before making a turn, in cross winds, on wet or slipp ery
surfaces, etc.
Increasing vehicle speed can destabilize the trailer.
● Take care when passing other vehicles. Passing requires consider-
able distance. After passing a vehicle, do not forget the lengt h of
your trailer, and be sure you have plenty of room before changi ng
lanes.
● To maintain engine braking efficiency and charging system perfo r-
mance when using engine braking, do not put the transmission in
D.
● Instability happens more frequently when descending steep or lo ng
downhill grades. Before descending, slow down and downshift. Do
not make sudden downshifts while descending steep or long down-
hill grades.
● Avoid holding the brake pedal down too long or applying the bra kes
too frequently. This could cause the brakes to overheat and result in
reduced braking efficiency.
● Due to the added load of the trailer, your vehicle’s engine may over-
heat on hot days (at temperatures over 85°F [30°C]) when drivin g
up a long or steep grade. If the engine coolant temperature gau ge
indicates overheating, immediately turn off the air conditionin g (if in
use), pull your vehicle off the road and stop in a safe spot.
(  P. 514)

329
4
Driving
4RUNNER (U)
4-6. Driving tips
●Use fluids that are appropriate t o the prevailing outside tempera-
tures. • Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspec t the condition of the battery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the rear tires.
Ensure that all tires are the same size and brand, and that chains match
the size of the tires.
Winter driving tips
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a ma n-
ner appropriate to the prevailing weather conditions.
Preparation for winter

4006-2. Maintenance
4RUNNER (U)
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “Owner’s Warranty
Information Booklet” or “Own er’s Manual Supplement/Sched-
uled Maintenance Guide”. It is recommended that any problem
you notice should be brought to the attention of your Toyota
dealer or qualified s ervice shop for advice.
Engine compartment
ItemsCheck points
BatteryCheck the connections. (P. 417)
Brake fluidIs the brake fluid at the correct level? ( P. 414)
Engine coolantIs the engine coolant at the correct level? ( P. 412)
Engine oilIs the engine oil at the correct level? (P. 410)
Exhaust systemThere should not be any fumes or strange sounds.
Power steering fluidIs the power steering fluid at the correct level?
(P. 416)
Radiator/condenserThe radiator and condenser should be free from
foreign objects. ( P. 414)
Washer fluidIs there sufficient washer fluid? (P. 420)

404
4RUNNER (U)
6-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
Battery condition (P. 417)
• Warm water• Baking soda
•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(P. 414)
• FMVSS No.116 DOT 3 or SAE J1703 brake
fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level (P. 412)
• “Toyota Super Long Life Coolant” or a similar
high quality ethylene glycol-based non-silicate,
non-amine, non-nitrite and non-borate coolant
with long-life hybrid organic acid technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed
with 50% coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed
with 55% coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level (P. 410)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)

4086-3. Do-it-yourself maintenance
4RUNNER (U)
Engine compartment
Washer fluid tank (P. 420)
Power steering fluid reservoir ( P. 416)
Engine oil level dipstick ( P. 410)
Engine coolant reservoir ( P. 412)
Engine oil filler cap ( P. 4 11 ) Brake fluid reservoir
( P. 414)
Fuse box ( P. 446)
Battery ( P. 417)
Condenser ( P. 414)
Radiator ( P. 414)1
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