2022 TOYOTA GR86 cooling

135
4
4-1. Before driving
Driving
WA R N I N G
●Do not leave a door or window
open if the curved glass is coated
with a metallized film such as a sil- ver-colored one. Reflected sunlight
may cause the glass to act as a
lens, causing a fire.
●Always apply the parking brake,
shift the shift lever to P (vehicles
with an automatic transmission), stop the engine and lock the vehi-
cle.
Do not leave the vehicle unat- tended while the engine is running.
If the vehicle is parked with the shift
lever in P but the parking brake is not set, the vehicl e may start to
move, possibly leading to an acci-
dent.
●Do not touch the exhaust pipes
while the engine is running or immediately after turning the engine
off.
Doing so may cause burns.
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift lever
or depress the accelerator pedal, this
could cause an accident or fire due to engine overheating. Additionally, if the
vehicle is parked in a poorly ventilated
area, exhaust gases may collect and enter the vehicle, leading to death or
a serious health hazard.
■When braking
●When the brakes are wet, drive
more cautiously. Braking distance increases when
the brakes are wet, and this may
cause one side of the vehicle to brake differently than the other
side. Also, the parking brake may
not securely hold the vehicle.
●If the brake booster device does not operate, do not follow other vehi-
cles closely and avoid hills or sharp
turns that require braking. In this case, braking is still possible,
but the brake pedal should be
depressed more firmly than usual. Also, the braking distance will
increase. Have your brakes fixed
immediately.
●Do not pump the brake pedal if the
engine stalls. Each push on the brake pedal uses
up the reserve for the
power-assisted brakes.
●The brake system consists of 2 indi-
vidual hydraulic systems; if one of the systems fails, the other will still
operate. In this case, the brake
pedal should be depressed more firmly than usual and the braking
distance will increase. Have your
brakes fixed immediately.
■If the vehicle becomes stuck
Do not spin the wheels excessively when any of the tires is up in the air,
or the vehicle is stuck in sand, mud,
etc. This may damage the driveline components or propel the vehicle for-
ward or backward, causing an acci-
dent.
NOTICE
■Pre-driving check
Trapping small animals in the cooling
fan and belts of the engine may result
in a malfunction. Check that no small animal enters the engine compart-
ment and under the vehicle before
starting the engine.

2665-1. Using the air conditioning system
When recirculated air mode is selected,
the indicator illuminates on the out-
side/recirculated air mode switch.
■Set cooling and dehumidifica-
tion function
Press the “A/C” switch.
When the function is on, the indicator
illuminates on the “A/C” switch.
■Fast cooling function
Press the “MAX A/C” switch.
When the switch is turned on, the air
conditioning will turn on, the tempera-
ture will be set to LO, the fan speed will
be set to MAX, the air outlets will be set
to upper body, and the air mode will
change to recirculated air mode auto-
matically.
To turn off fast cooling function and
return the previous setting, press the
“MAX A/C” switch again.
■Suspend function
Press the “ON/OFF” switch.
While the air condi tioning system is
being used, when the “ON/OFF” switch
is pressed, the air conditioning system
will stop and the temperature setting
display, etc. will turn off.
If the “ON/OFF” switch is pushed and
turned on, the air conditioning system
will operate in the operating state it was
in when turned off. However, if the fast
cooling function was operating when
the air conditioning system was turned
off, it will operate in the operating state
it was in before the fast cooling function
was turned on.
■Defogging the windshield
Defoggers are used to defog the
windshield and front side windows.
Press the windshield defogger
switch.
Set the outside/recirculated air mode
switch to outside air mode if the recircu-
lated air mode is used. (It may switch
automatically.)
To defog the windshield and the side
windows quickly, turn the air flow and
temperature up.
To return to the previous mode, press
the windshield defogger switch again
when the windshield is defogged.
When the windshield defogger switch is
on, the indicator illuminates on the
windshield defogger switch.
■Defogging the rear window
and outside rear view mirrors
Defoggers are used to defog the
rear window, and to remove rain-
drops, dew and frost from the out-
side rear view mirrors.
Press the rear window and outside
rear view mirror defoggers switch.
The defoggers will automatically turn off
after approximately 15 minutes.
When the rear window and outside rear
view mirror defoggers switch is on, the
indicator illuminates on the rear window
and outside rear view mirror defoggers
switch.
■Fogging up of the windows
●The windows will easily fog up when
the humidity in the vehicle is high.
Turning “A/C” on will dehumidify the air from the outlets and defog the
windshield effectively.
●If you turn “A/C” off, the windows may
fog up more easily.
●The windows may fog up if the recir-

2926-3. Do-it-yourself maintenance
WA R N I N G
■When working on the engine
compartment
●Keep hands, clothing and tools away from the moving fans and
engine drive belt.
●Be careful not to touch the engine,
radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil
and other fluids may also be hot.
●Do not leave anything that may
burn easily, such as paper and rags, in the engine compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the
battery. Fuel and battery fumes are
flammable.
●Be extremely cautious when work-
ing on the battery. It contains poi- sonous and corrosive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and dam-
age painted surfaces. If fluid gets
on your hands or in your eyes, flush the affected area with clean water
immediately.
If you still experience discomfort, con- sult a doctor.
■When working near the electric cooling fans or radiator grille
Be sure the engine switch is off.
With the engine switch in ON, the electric cooling fans may automati-
cally start to run if the air conditioning
is on and/or the coolant temperature is high. (P.298)
■Safety glasses
Wear safety glasses to prevent flying
or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
■If you remove the air cleaner fil-
ter
Driving with the air cleaner filter removed may cause excessive
engine wear due to dirt in the air.
■If the fluid level is low or high
It is normal for the brake fluid level to
go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refill-
ing, it may indicate a serious problem.

295
6
6-3. Do-it-yourself maintenance
Maintenance and care
Fuse boxes ( P.319)
Battery ( P.298)
Engine oil level dipstick ( P.295)
Engine oil filler cap ( P.295)
Washer fluid tank ( P.300)
Electric cooling fans
Condenser ( P.298)
Radiator ( P.298)
Engine coolant reservoir ( P. 2 9 7 )
For right-hand drive vehicles:
The battery is located on the opposite side of the engine compartment.
With the engine at operating tem-
perature and turned off, check the
oil level on the dipstick.
Engine compartment
Components
A
C
D
Checking and adding the
engine oil

2986-3. Do-it-yourself maintenance
“TOYOTA Genuine 50/50 Pre-mixed
Super Long Life Coolant BLUE” is a mix- ture of 50% coolant and 50% deionized
water. (Minimum temperature: -35°C
[-31°F])
For more details about engine coolant,
contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
■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.
Check the radiator and condenser
and clear away any foreign objects.
If either of the above parts is
extremely dirty or you are not sure
of their condition, have your vehicle
inspected by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
Check the battery as follows.
■Battery exterior
Make sure that the battery termi-
nals are not corroded and that there
are no loose connections, cracks,
or loose clamps.
Hold-down clamp
Terminals
■Checking battery fluid
Check that the level is between the
“UPPER LEVEL” and “LOWER
LEVEL” lines.
WA R N I N G
■When the engine is hot
Do not remove the engine coolant reservoir cap. ( P.364)
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
straight antifreeze. The correct mix-
ture 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.
Checking the radiator and
condenser
WA R N I N G
■When the engine is hot
Do not touch the radiator or con-
denser as they may be hot and cause serious injuries, such as burns.
Battery
A

3627-2. Steps to take in an emergency
1Stop the vehicle in a safe place
and turn off the air conditioning
system, and then stop the
engine.
2 If you see steam: Carefully lift
the hood after the steam sub-
sides.
If you do not see steam: Care-
fully lift the hood.
3 After the engine has cooled
down sufficiently, inspect the
WA R N I N G
●In the event that battery fluid comes
into contact with the skin or eyes,
immediately wash the affected area with water and seek medical atten-
tion. Place a wet sponge or cloth
over the affected area until medical attention can be received.
●Always wash your hands after han-
dling the battery support, terminals, and other battery-related parts.
●Do not allow children near the bat-tery.
■To prevent damage to the vehicle
Do not pull- or push-start the vehicle
as the three-way catalytic converter
may overheat and become a fire haz- ard.
NOTICE
■When handling jumper cables
Be careful that the jumper cables do
not become tangled in the cooling fans or any of the belts when connect-
ing or disconnecting them.
■When closing the doors
While pushing the door glass towards
the inside of the vehicle, slowly close the door.
Because the side window open/close
function linked to door operation will not operate, the window may interfere
with the vehicle body, possibly
scratching both the vehicle body and window, or even shattering the win-
dow.
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The engine coolant tempera-
ture gauge ( P.88) is in the
red zone or a loss of engine
power is experienced. (For
example, the vehicle speed
does not increase.)
 “High Coolant Temperature
Check Owner's Manual” is
shown on the multi-information
display.
 Steam comes out from under
the hood.
Correction procedures

363
7
7-2. Steps to take in an emergency
When trouble arises
hoses and radiator core (radia-
tor) for any leaks.
Radiators
Cooling fans
If a large amount of coolant leaks,
immediately contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Radiator cap
5 Add engine coolant if necessary.
Water can be used in an emergency if
engine coolant is unavailable.
6 Start the engine and turn the air
conditioning system on to check
that the radiator cooling fans
operate and to check for coolant
leaks from the radiator or hoses.
The fans operate when the air condi-
tioning system is turned on immediately
after a cold start. Confirm that the fans are operating by checking the fan
sound and air flow. If it is difficult to
check these, turn the air conditioning system on and off repea tedly. (The fans
may not operate in freezing tempera-
tures.)
7 If the fans are not operating:
Stop the engine immediately
and contact any authorized
Toyota retailer or Toyota author-
ized repairer, or any reliable
repairer.
If the fans are operating: Have
the vehicle inspected at the
nearest any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
A
A
C
DWA R N I N G
■When inspecting under the hood
of your vehicle
Observe the following precautions. Failure to do so ma y result in serious
injury such as burns.

3647-2. Steps to take in an emergency
1Stop the engine. Set the parking
brake and shift the shift lever to
P (automatic transmission) or N
(manual transmission).
2 Remove the mud, snow or sand
from around the rear wheels.
3 Place wood, stones or some
other material under the rear
wheels to help provide traction.
4 Restart the engine.
5 Shift the shift lever to D or R
(automatic transmission) or 1 or
R (manual transmission) and
release the parking brake. Then,
while exercising caution,
depress the accelerator pedal.
■When it is difficult to free the vehi- cle
Press the switch to turn off TRC.
WA R N I N G
●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 (espe-
cially a tie, a scarf or a muffler)
away from the fans and belts. Fail-
ure to do so may cause the hands or clothing to be caught, resulting in
serious injury.
●Do not loosen the coolant reservoir
caps while the engine and radiator
are hot. High temperature steam or coolant
could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine
has cooled down sufficiently. 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 additive.
If the vehicle becomes
stuck
Carry out the following proce-
dures if the tires spin or the
vehicle becomes stuck in mud,
dirt or snow:
Recovering procedure