brake TOYOTA GT86 2018 (in English) Service Manual

251
2-4. Using other driving systems
2
When driving
WARNING
■
TRAC may not operate effectively when
Directional control and power may not be achievable while drivi ng on slip-
pery road surfaces, even if the TRAC system is operating.
Do not drive the vehicle in conditions where stability and powe r may be lost.
■ When the VSC and/or brake LSD function is activated
The slip indicator light flashes. Always drive carefully. Reckl ess driving may
cause an accident. Exercise particular care when the indicator light flashes.
■ When the TRAC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the r oad condi-
tions. As these are the systems to help ensure vehicle stability and driving
force, do not turn the TRAC/VSC systems off unless necessary.
■ Replacing tires
Make sure that all tires are of the specified size, brand, trea d pattern and
total load capacity. In addition, make sure that the tires are inflated to the
recommended tire inflation pressure level.
The ABS, TRAC and VSC systems will not function correctly if di fferent tires
are installed on the vehicle.
Contact your Toyota dealer for further information when replaci ng tires or
wheels.
■ Handling of tires and suspension
Using tires with any kind of problem or modifying the suspensio n will affect
the driving assist systems, and may cause a system to malfuncti on.

252
2-4. Using other driving systems
Hill-start assist control
Hill-start assist control helps to maintain braking force to assist
starting off forward while facing uphill or starting off backward while
facing downhill. As hill-start assist control is initially disabled,
enable the system to make it operable. The enabled/disabled set ting
will be maintained the next time the engine is started.
The hill-start assist control ON
indicator will be illuminated
when system is enabled and
flash while the system is oper-
ating.
■ Enabling hill-start assist control
Park your vehicle in a flat, safe location.
Make sure that the parking brake is securely engaged.
Stop the engine by turning the engine switch to the “LOCK”
position (vehicles without a smart key system) or turning
the “ENGINE START STOP” switch off (vehicles with a
smart key system).
Start the engine and check t hat the ABS warning light and
slip indicator are off.
Press and hold for
approximately 30 seconds.
Check that both the VSC off
indicator and “TRAC OFF” indi-
cator illuminate and then turn
off.
STEP 1
STEP 2
STEP 3
STEP 4

254 2-4. Using other driving systems
■Operating conditions of hill-start assist control
When the following conditions are met, the hill-start assist co ntrol will oper-
ate:
● Vehicles with an automatic transmission: The shift lever is in D or M
(when starting off forward on while facing uphill) or in R (whe n starting off
backward while facing downhill).
● Vehicles with a manual transmission: The shift lever is in a po sition other
than R (when starting off forward while facing uphill) or in R (when start-
ing off backward while facing downhill).
● The vehicle is stopped.
● The accelerator pedal is not depressed.
● The parking brake is not engaged.
■ Hill-start assist control will not operate when
Hill-start assist control will not operate when any of the following conditions
are met:
●Vehicles with an automatic transmission: The shift lever is in a position
other than D or M (when facing uphill) or in a position other t han R (when
facing downhill).
● Vehicles with a manual transmission: The shift lever is in R (w hen facing
uphill) or in a position other than R (when facing downhill).
● Vehicles with an automatic transmission: The accelerator pedal is
depressed.
● The parking brake is applied.
● Vehicles with a manual transmission: The clutch is engaged.
● Approximately 2 seconds have elapsed since the brake pedal was
released.
● The hill-start assist control ON indicator is not illuminated.
● Vehicles without a smart key system: The engine switch is turne d to the
“ACC” or “LOCK” position.
● Vehicles with a smart key system: The “ENGINE START STOP” switc h is
turned to ACCESSORY mode or turned off.

255
2-4. Using other driving systems
2
When driving
■
Notes for hill-start assist control
●A slight jolt may be felt when starting off backward with the s hift lever in R
and then moving forward.
● If the braking power of hill-start assist control is insufficient, depress the
brake pedal.
● While the vehicle is stopped, make sure to depress the brake pe dal.
■ The system may be malfunctioning when
In the following situations, the system may be malfunctioning. Have the vehi-
cle inspected by your Toyota dealer.
● The slip indicator is illuminated.
● The hill-start assist control ON indicator turns off and a buzz er sounds.
WARNING
■Hill-start assist control precautions
●Do not overly rely on hill-start assist control. Hill-start ass ist control may
not operate effectively on steep inclines and roads covered wit h ice.
● Unlike the parking brake, hill-start assist control is not inte nded to hold the
vehicle stationary for an extended period of time. Do not attempt to use
hill-start assist control to hold the vehicle on an incline, as doing so may
lead to an accident.
● Do not stop the engine while hill-start assist control is operating, as hill-
start assist control will stop operating, possibly leading to a n accident.

259
2-5. Driving information
2
When driving
WARNING
■Storage precautions
Observe the following precautions.
Failure to do so may result i
n death or serious injury.
●Stow cargo and luggage in the trunk whenever possible.
●To prevent cargo and luggage from sliding forward during brakin g, do
not stack anything in the enlarged trunk. Keep cargo and luggag e low,
as close to the floor as possible.
●When you fold down the rear seats, long items should not be pla ced
directly behind the front seats.
●Never allow anyone to ride in the enlarged trunk. It is not des igned for
passengers. They should ride in their seats with their seat belts prop-
erly fastened. Otherwise, they are much more likely to suffer d eath or
serious bodily injury, in the event of sudden braking, sudden s werving
or an accident.
●Do not place cargo or luggage in or on the following locations as the
item may get under the clutch, brake or accelerator pedal and p revent
the pedals from being depressed properly, block the driver’s vi sion, or
hit the driver or passengers, causing an accident:
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the package tray
• On the instrument panel
• On the dashboard
●Secure all items in the occupant compartment, as they may shift and
injure someone during sudden braking, sudden swerving or an acc i-
dent.
■Capacity and distribution
●Do not exceed the maximum axle weight rating or the total vehic le
weight rating.
●Even if the total load of occupant's weight and the cargo load is less
than the total load capacity, do not apply the load unevenly. I mproper
loading may cause deterioration of steering or braking control which
may cause death or serious injury.

261
2-5. Driving information
2
When driving
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner app ropri-
ate to the prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that are appropriate t o the prevailing outside tem-
peratures.
• Engine oil
• Washer fluid
● Have a service technician inspec t the condition of the battery.
● Have the vehicle fitted with four snow tires.
Make sure to install 4 tires that are of the specified size, an d that
all 4 tires are the same size, same maker, same brand and tread
pattern.
■ Before driving the vehicle
Perform the following accordi ng to the driving conditions.
● Do not try to forcibly open a window or move a wiper that is
frozen. Pour warm water over the frozen area to melt the ice.
Wipe away the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents
in front of th e windshield.
● Check for and remove any excess ice or snow that may have
accumulated on the exterior lig hts, vehicle's roof, chassis,
around the tires or on the brakes.
● Remove any snow or mud from the bottom of your shoes
before getting in the vehicle.

262 2-5. Driving information
●If a door is opened and closed wh en its side window is frozen,
the window safety device will operate and the side window
open/close function linked to door operation may not operate
correctly. If this occurs, perform the following after the ice has
melted.
Open the side window until it is approximately halfway open
with the door closed.
Fully close the window by pulling the switch up to the one-
touch closing position and cont inue holding the switch for 1
second or more after the window fully closes.
The window position is reset and the safety device operations w ill
be released.
■ When driving the vehicle
Accelerate the vehicle slowly, keep a safe distance between you
and the vehicle ahead, and drive at a reduced speed suitable to
road conditions.
■ When parking the vehicle (in the winter time or in the cold
latitudes)
Park the vehicle and move the shift lever to P (automatic trans -
mission) or 1 or R (manual transmission) without setting the
parking brake. The parking brake may freeze up, preventing it
from being released. If necessary, block the wheels to prevent
inadvertent sliding or creeping.
STEP 1
STEP 2

311
4-1. Maintenance and care
4
Maintenance and care
NOTICE
■
Cleaning the exterior lights
●Wash carefully. Do not use organic substances or scrub with a h ard brush.
This may damage the surfaces of the lights.
● Do not apply wax on the surfaces of the lights.
Wax may cause damage to the lenses.
■ To prevent damage to th e windshield wiper arms
When lifting the wiper arms away from the windshield, pull the driver side
wiper arm upward first, and repeat for the passenger side. When returning
the wipers to their original position, do so from the passenger side first.
■ When using a high pressure car wash
Do not bring the nozzle tip close to boots (rubber or resin man ufactured
cover), connectors or the following parts. The parts may be damaged if they
come into contact with high-pressure water.
• Traction related parts
• Steering parts
• Suspension parts
• Brake parts

320
4-2. Maintenance
General maintenance
Engine compartment
ItemsCheck points
Battery Check the connections.
(P. 339)
Brake fluid At the correct level? ( P. 337)
Engine coolant At the correct level? ( P. 335)
Engine oil At the correct level? ( P. 332)
Exhaust system No fumes or strange sounds?
Radiator/condenser/hoses Not blocked with foreign matter?
(
P. 337)
Washer fluid At the correct level? (P. 343)
Listed below are the general maintenance items that should be p er-
formed at the intervals specifie d in the “Owner's Warranty Info rma-
tion Booklet” or “Owner’s Manual Supplement/Scheduled
Maintenance Guide”. It is recomme nded that any problem you notice
should be brought to the attention of your Toyota dealer or qua lified
service shop for advice.

321
4-2. Maintenance
4
Maintenance and care
Vehicle interior
ItemsCheck points
Accelerator pedal • Moves smoothly (without uneven
pedal effort or catching)?
Automatic transmission “Park”
mechanism • Can the vehicle be held securely
on an incline with the shift lever in
P?
Brake pedal • Moves smoothly?
• Does it have appropriate clear-
ance and correct amount of free
play?
Brakes • Not pull to one side when
applied?
• Loss of brake effectiveness?
• Spongy feeling brake pedal?
• Pedal almost touches floor?
Clutch pedal • Moves smoothly?
Head restraints • Move smoothly and lock
securely?
Indicators/buzzers • Function properly?
Lights • Do all the lights come on?
Parking brake • Moves smoothly?
• Can hold the vehicle securely on
an incline?
Seat belts • Does the seat belt system oper-
ate smoothly?
• Are the belts undamaged?
Seats • Do the seat controls operate
properly?
Steering wheel • Moves smoothly?
• Has correct free play?
• No strange noises?