brake TOYOTA tC 2012 (in English) Workshop Manual

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When trouble arises
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5-1. Essential information
Scion_tC_U_(OM21041U)
CAUTION
■
Caution while towing
● Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive
stress on the emergency towing eyelets and the cables or chains. Always
be cautious of the surroundings and other vehicles while towing.
● Vehicles without a smart key system: 
Do not turn the engine switch to the “LOCK” position or remove the\
key. 
Vehicles with a smart key system: 
Do not turn the “ENGINE START STOP” switch off. 
Doing so will lock the steering wheel and prevent operation, possibly caus-
ing an accident and resulting in death or serious injury.
● If the engine is not running, the power assist for the brakes and steering
will not function, making steering and braking more difficult.
■ Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely. 
If not securely installed, towing eyelets may come loose during towing. This
may lead to accidents that cause serious injury or even death.

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When trouble arises
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5-1. Essential information
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If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Cont act your Scion dealer as soon as
possible.
■ Visible symptoms
●Fluid leaks under the vehicle 
(Water dripping from the air cond itioning after use is normal.)
● Flat-looking tires or uneven tire wear
● High engine coolant temperatur e warning light flashes or
comes on
● Low engine coolant temperature indicator comes on or does
not come on continuously
■ 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 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, s pongy feeling, pedal almost
touches the floor

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5-2. Steps to take in an emergency
If a war ning light turns 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 vehicle in a safe place and contact your
Scion dealer.
*: Parking brake engaged warning buzzer: 
A buzzer will sound if the vehicle is driven at a speed of approximately 3 mph
(5 km/h) or more.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Brake system warning light (warning buzzer)
*
• 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 fully
released, the system is operating normally.
Calmly perform the following actio
ns if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then goes
off, this does not necessarily indicate a malfunction in the system.
However, if this continues to occu r, have the vehicle inspected by
your Scion dealer.

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When trouble arises
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5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
Have the vehicle inspected by your Scion dealer 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 inspected by your Scion 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; or
• The electronic automatic transmission control system (if equipped).
SRS warning light Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.
Slip indicator light Indicates a malfunction in:
• Vehicle stability control; or
• Traction control.

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5-2. Steps to take in an emergency
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CAUTION
■
When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy. 
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.
■
If the tire pressure warning light comes on (U.S.A. only)
Be sure to observe the following precautions. Failure to do so could
cause a loss of vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is pr obable that you have a flat tire. Check the tires.
If a tire is flat, change it with the spare tire and have the flat tire
repaired by the nearest Scion dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur (U.S.A. only)
The tire pressure warning syste m may not activate immediately.

380
5-2. Steps to take in an emergency
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If you have a flat tire
Remove the flat tire and replace it with the spare tire provided.
■Before jacking up the vehicle
●Stop the vehicle on a hard, flat surface.
● Set the parking brake.
● Shift the shift lever to P (automatic transmission) or R (manual
transmission).
● Stop the engine.
● Turn on the emergency flashers.
■ Location of the spare tire, jack and tools
Jack handle
Jack
Wheel nut

wrench
Spa r e tire
Towing eyelet

390 5-2. Steps to take in an emergency
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CAUTION
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically
designed for use with your vehicle. Do not use your compact spare tire
on another vehicle.
●Do not use more than one compact spare tire simultaneously.
●Replace the compact spare tire with a standard tire as soon as possi-
ble.
●Avoid sudden acceleration, deceleration and braking, as well as sharp
cornering.
■When storing the compact spare tire
Be careful not to catch fingers or other body parts between the compact
spare tire and the body of the vehicle.
■When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following sys-
tems may not operate correctly:
●ABS & Brake assist
●VSC
●TRAC
●Cruise control (if equipped)
■Speed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact
spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure
to observe this precaution may lead to an accident causing death or seri-
ous injury.

392 5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
CAUTION
■Replacing a flat tire
Observe the following precautions to reduce the risk of death or serious
injury:
●Do not touch the disc wheels or the area around the brakes immedi-
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. T ouching these areas with hands, feet
or other body parts while changing a tire, etc. may result in burns.
●Have the wheel nuts tightened with a torque wrench to 76 ft•lbf
(103 N
•m, 10.5 kgf•m) as soon as possible after changing wheels.
●When installing a tire, only use wheel nuts that have been specifically
designed for that wheel.
●If there are any cracks or deformatio ns in the bolt screws, nut threads
or bolt holes of the wheel, have the vehicle inspected by your Scion
dealer.
Failure to follow these precautions could cause the wheel nuts to loosen
and the tire to fall off, result ing in death or serious injury.
■When installing the wheel nuts
Be sure to install the wheel nuts with the tapered end facing inward. 
(  P. 325)

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5-2. Steps to take in an emergency
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Emergency start function (vehicles with a smart key system)
When the engine does not start, th e following steps can be used as
an interim measure to start the engine if the “ENGINE START STOP”
switch is functioning normally:
Set the parking brake.
Shift the shift lever to P (automatic transmission) or N (manual
transmission).
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Press and hold the “ENGINE START STOP” switch for about
15 seconds while depressing the brake pedal (automatic
transmission) or brake and clutch pedals (manual transmis-
sion) firmly.
Even if the engine can be started using the above steps, the system
may be malfunctioning. Have the vehicle inspected by your Scion
dealer.
STEP 1
STEP 2
STEP 3
STEP 4

398
5-2. Steps to take in an emergency
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If the shift lever cannot be shifted from P (automatic transmission)
If the shift lever cannot be shifted with your foot on the brake pedal,
there may be a problem with the shift lock system (a system to pre-
vent accidental operation of the shift lever). Have the vehicle
inspected by your Scion dealer immediately. 
The following steps may be used as an emergency measure to
ensure that the shift lever can be shifted:
Set the parking brake.
Vehicles without a smart ke y system: Turn the engine
switch to the “ACC” position. 
Vehicles with a smart key system: Turn the “ENGINE
START STOP” switch to ACCESSORY mode.
Depress the brake pedal.
Pry the cover up with a flat-
head screwdriver or equiva-
lent tool.
To prevent damage to the
cover, cover the tip of the
screwdriver with a rag.
Press the shift lock override
button.
The shift lever can be shifted
while the button is pressed.
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5