2017 TOYOTA 4RUNNER engine coolant

3596-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)_(OM35B37U)
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the engine is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L”
line, add coolant up to the “F” line.
(→P. 457)
■ Coolant selection
Only use “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.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31 °F [-35 °C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44 °F [-42 °C])
For more details about engine coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock
and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Engine coolant
1
2
3

3606-3. Do-it-yourself maintenance
4RUNNER (U)_(OM35B37U)
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is ex tremely dirty or you are not sure of
their condition, have yo ur vehicle inspected by your Toyota dealer.
CAUTION
■When the engine is hot
Do not remove the engine coolant reservoir cap or the radiator cap.
(→P. 458)
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■ When adding coolant
Coolant is neither plain water nor stra ight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
Radiator and condenser
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri\
-
ous injuries, such as burns.

4157-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)_(OM35B37U)
●Fluid leaks under the vehicle.
(Water dripping from the air co nditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points higher
than normal.
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spon gy feeling, pedal almost touches
the floor
If you think something is wrong
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4577-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)_(OM35B37U)
●The needle of the engine coolant temperature gauge ( →P. 8 1 )
enters the red zone or a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficient ly, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory
if it is between the “F” and “L”
lines on the reservoir.
Reservoir
“F” line
“L” line
Radiator cap
If your vehicle overheats
The following may indicate that your vehicle is overheating:
Correction procedures
1
2
3
1
2
4
1
2
3
4

4587-2. Steps to take in an emergency
4RUNNER (U)_(OM35B37U)
Add engine coolant if neces-
sary. (→P. 355)
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 fr om 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 in spected at the nearest Toyota dealer.
5
CAUTION
■When inspecting under the 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 hood 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.

4597-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)_(OM35B37U)
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additives.

4838-1. Specifications
8
Vehicle specifications
4RUNNER (U)_(OM35B37U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

520Alphabetical index
4RUNNER (U)_(OM35B37U)
EngineACCESSORY mode ............. 197
Compartment ........................ 354
Engine switch................ 193, 196
Hood ..................................... 353
How to start the
engine......................... 193, 196
Identification number ............ 463
If the engine will not start ...... 448
Ignition switch (engine switch) ........... 193, 196
Overheating .......................... 457
Engine coolant ......................... 359 Capacity ................................ 468
Checking ............................... 359
Preparing and checking before winter....................... 272
Engine coolant temperature gauge........................................ 81
Engine immobilizer system ...... 70
Engine oil ................................. 356
Capacity ................................ 465
Checking ............................... 356
Preparing and checking before winter....................... 272
Engine switch .................. 193, 196
Event data recorder (EDR) ........ 10
Flat tire...................................... 433
Floor mats .................................. 26
Fluid Automatic transmission......... 471
Brake .................................... 471
Power steering ...................... 472
Washer ................................. 367
Fog lights ................................. 214 Replacing light bulbs............. 389
Switch ................................... 214
Wattage ................................ 473
Four-wheel drive
system ............................ 235, 239 Front passenger occupant
classification system .............. 46
Front personal lights............... 298
Front seats ............................... 120 Adjustment............................ 120
Cleaning ............................... 341
Correct driving posture ........... 28
Driving position memory ....... 133
Head restraints ..................... 137
Seat heaters ......................... 295
Seat position memory ........... 133
Seat ventilators ..................... 295
Front side marker lights ......... 208 Light switch ........................... 208
Replacing light bulbs ............ 396
Wattage ................................ 473
Front turn signal lights ........... 206
Replacing light bulbs ............ 394
Turn signal lever ................... 206
Wattage ................................ 473
Fuel ........................................... 222 Capacity................................ 464
Fuel gauge.............................. 81
Fuel pump shut off system ... 416
Information............................ 474
Refueling .............................. 222
Type.............................. 222, 464
Warning light......................... 419
Fuel filler door ......................... 222 Refueling .............................. 222
Fuel pump shut off system..... 416
Fuses ........................................ 386
Garage door opener ................ 324
Gauges ....................................... 81
Glove box ................................. 301
Grocery bag hooks.................. 310
F
G