brake TOYOTA 86 2020 Repair Manual

394
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle proba bly
needs adjustment or repair. Cont act your Toyota dealer as soon as
possible.
■ Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from t he air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Vehicles with a monochrome multi-information display: The
engine coolant temperature gauge needle continually points
higher than normal
● Vehicles with a color multi-information display: The high
engine coolant temperature wa rning light flashes or illumi-
nates
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●Engine missing, stumbling or running rough
● 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, s pongy feeling, pedal almost
touches the floor

396
5-2. Steps to take in an emergency
If a warning light tur ns on or a war ning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.
The following warning indicates a possible problem in the brake sys-
tem. Immediately stop the vehicl e in a safe place and contact your
Toyota dealer.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Brake system warning light
• Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is ful ly
released the system is operating normally.
Calmly perform the following actions if any of the warning ligh ts turn
on or flash. If a light turns on or flashes, but then turns off , this does
not necessarily indicate a malfunction in the system.

398 5-2. Steps to take in an emergency
Have the vehicle inspected immediately.
Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle ins pected by your Toyota dealer immediately.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transmission control system.
SRS warning light Indicates a malfunction in:
• The SRS airbag system;
• The seat belt pretensioner system;
• The front passenger occupant classification system.
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
• The ABS;
• The brake assist system.
Electric power steering warn ing light (warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system.
Slip indicator Indicates a malfunction in:
• The VSC system;
• The TRAC system;
• The hill-start assist control system.
Automatic headlight leveling system warning light Indicates a malfunction in the automatic headlight leveling
system.

5
When trouble arises
405
5-2. Steps to take in an emergency
WARNING
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so
could
cause loss of vehicle control and result in death or serious injury.
●Stop your vehicle in a safe plac e as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inf lation pres-
sure adjustment, it is probable that you have a flat tire. Check the tires.
If the tire is flat, change to the spare tire and have the flat tire repaired
by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires dete riorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

408
5-2. Steps to take in an emergency
If a warning message is displayed (vehicles with a color multi-information display)
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.
The following warning indicates a possible problem in the brake sys-
tem. Immediately stop the vehicl e in a safe place and contact your
Toyota dealer.
Warning messageDetails
(U.S.A.)
(Canada) Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
A buzzer also sounds.
If a warning is shown on the mult i-information display, stay calm and
perform the following actions:
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the
multi-information display.
Multi-information display
If any of the warning light comes on again after the following
actions have been performed, contact yo ur Toyota dealer.

410 5-2. Steps to take in an emergency
Have the vehicle inspected immediately.
Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle ins pected by your Toyota dealer immediately.
Warning messageDetails
Indicates a malfunction in:
• The SRS airbag system;
• The seat belt pretensioner system;
• The front passenger occupant detection system. A buzzer also sounds.
(U.S.A.)
(Canada) Indicates a malfunction in:
• The ABS;
• The brake assist system.
A buzzer also sounds.
Indicates a malfunction in the EPS (Electric Power
Steering) system. A buzzer also sounds.

5
When trouble arises
419
5-2. Steps to take in an emergency
Once

(Flashes)
(Flashes in yellow)
(Vehicles with an auto-
matic transmission) • When the doors
were unlocked
with the mechani-
cal key and then
the “ENGINE
START STOP”
switch was
pressed, the
electronic key
could not be
detected in the
vehicle.
• The electronic key could not be
detected in the
vehicle even after
the “ENGINE
START STOP”
switch was
pressed two con-
secutive times. Touch the
electronic
key to the
“ENGINE
START
STOP”
switch
while
depress-
ing the
brake
pedal.
Interior
buzzerExterior
buzzerWarning messageDetailsCorrection procedure

422 5-2. Steps to take in an emergency
Once
(Flashes)
(Vehicles with an auto-
matic transmission) The driver’s door
was opened and
closed with the
“ENGINE START
STOP” switch
turned off and
then the
“ENGINE START
STOP” switch
was put in
ACCESSORY
mode twice with-
out the engine
being started.
Press the
“ENGINE
START
STOP”
switch
while
depress-
ing the
brake
pedal.
During an engine
starting proce-
dure in the event
that the electronic
key was not func-
tioning properly
( P. 442), the
“ENGINE START
STOP” switch
was touched with
the electronic
key. Press the
“ENGINE
START
STOP”
switch
while
depress-
ing the
brake
pedal
within 10
seconds
of the
buzzer
sounding.
Interior
buzzerExterior
buzzerWarning messageDetailsCorrection procedure

5
When trouble arises
425
5-2. Steps to take in an emergency
If you have a flat tire
Your vehicle is equipped with a spare tire. The flat tire can be
replaced with the spare tire.
■ Before jacking up the vehicle
●Stop the vehicle in a safe place on a hard, flat surface.
● Set the parking brake.
● Shift the shift lever to P (vehicles with an automatic transmis -
sion) or R (vehicles with a manual transmission).
● Stop the engine.
● Turn on the emergency flashers. ( P. 3 8 4 )
■ Location of the spare t ire, jack and tools
*: Vehicles with a T145/70D 17 compact spare tire
Jack Jack handle
Spare tire
Towing eyelet
Screwdriver
Wheel nut
wrench
Spacer
*

5
When trouble arises
433
5-2. Steps to take in an emergency
WARNING
■Replacing a flat tire
●Do not touch the disc wheels or the area around the brakes imme
di-
ately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around
the brakes will be extremely hot . Touching these areas with han ds, feet
or other body parts w hile changing a tire, etc. may result in b urns.
●Do not attach a heavily damaged wheel ornament, as it may fly o ff the
wheel while the ve hicle is moving.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the tire to fall off, resulting in death or serious injury.
• Have the wheel nuts tightened with a torque wrench to 89 ft•lb f (120
N•m, 12.2 kgf•m) as soon as possible after changing wheels.
• When installing a tire, only use wheel nuts that have been spe cifi-
cally designed for that wheel.
• If there are any cracks or deformations in the bolt screws, nu t
threads or bolt holes of the wh eel, have the vehicle inspected by
your Toyota dealer.
• When installing the wheel nuts, be sure to install them with t he
tapered ends facing inward. ( P. 358)