2017 TOYOTA YARIS Pre collision

1684-5. Toyota Safety Sense C
■Enabling/disabling the pre-collision system
Press the PCS switch for 3 sec-
onds or more.
The PCS warning light will turn
on and a message will be dis-
played in the multi-information
display, when the system is
turned off.
To enable the system, press the
PCS switch again.
The pre-collision system is
enabled each time the engine is
started.
■
Changing the pre-colli sion warning timing
Press the PCS switch to turn on the PCS activation indicator and
display the current warning timing in the multi-information display.
Each time the PCS switch is presse d in the displayed state, the tim-
ing for the warning changes as follows:
If the operation timing setting has been changed, the setting will be
retained the next time the engine is started.
Far
The warning will begin to oper-
ate earlier than with the default
timing.
Middle
This is the default setting.
Near
The warning will begin to oper-
ate later than with the default
timing.
Changing settings of th e pre-collision system
1
2
3

1694-5. Toyota Safety Sense C
4
Driving
■Operational conditions
The pre-collision system is enabled and determines that the possibility of a
frontal collision with a vehicle is high.
Each function is operational at the following speeds:
●Pre-collision warning:
• Vehicle speed is approximately 10 to 86 mph (15 to 140 km/h).
• The relative speed between your vehicle and a preceding vehicle is
approximately 10 mph (15 km/h) or more.
● Pre-collision brake assist:
• Vehicle speed is approximately 19 to 49 mph (30 to 80 km/h).
• The relative speed between your vehicle and a preceding vehicle is
approximately 19 mph (30 km/h) or more.
● Pre-collision braking:
• Vehicle speed is approximately 7 to 49 mph (10 to 80 km/h).
• The relative speed between your vehicle and a preceding vehicle is
approximately 7 mph (10 km/h) or more.
The system may not operate in the following situations:
● If a battery terminal has been disconnected and reconnected and then the
vehicle has not been driven for a certain amount of time
● If the shift lever is in R
● If VSC is disabled (only the pre-collision warning function will be opera-
tional)
■ Cancelation of the pre-collision braking
●If either of the following occur while the pre-collision braking function is
operating, it will be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.
● If the vehicle is stopped by the operation of the pre-collision braking func-
tion, the operation of the pre-collision braking function will be canceled after
the vehicle has been stopped for approximately 2 seconds.

1704-5. Toyota Safety Sense C
■Conditions under which the system ma y operate even if there is no pos-
sibility of a collision
● In some situations such as the following, the system may determine that
there is a possibility of a frontal collision and operate.
• If the front of the vehicle is raised or lowered, such as when the road sur-
face is uneven or undulating
• When passing a vehicle in an oncom-
ing lane that is stopped to make a
right/left turn
• When passing an oncoming vehicle while making a left or right turn
• When driving on a road where relative location to vehicle ahead in an adja-
cent lane may change, such as on a
winding road
• When rapidly closing on a preceding vehicle
• When passing extremely close to a vehicle or structural object

1774-5. Toyota Safety Sense C
4
Driving
■If the PCS warning light flashes or illuminates
The pre-collision system may be tempor arily unavailable or there may be a
malfunction in the system.
● In the following situations, the warning light will be cleared and the system
will become operational when normal operating conditions return:
• When the area around the front sensor is hot, such as after the vehicle
has been parked in the sun
• When the windshield is fogged up or covered with condensation or ice (→ P. 205)
• When the front sensor or the area around either sensor is cold, such as in
an extremely cold environment
• If the area in front of the front sensor is obstructed, such as when the hood is open
● If the PCS warning light continues to flash or illuminate, the system may be
malfunctioning. Have the vehicle inspected by your Toyota dealer immedi-
ately.
■ If VSC is disabled
●If TRC and VSC are disabled (→P. 194), the pre-collision brake assist and
pre-collision braking functions are also disabled. However, the pre-collision
warning function will still operate.
● The PCS warning light illuminates.

1924-6. Using the driving support systems
Driving assist systems
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly,
or if the brakes are applied while driving on a slippery road surface
◆Brake assist
Generates an increased level of braking force after the brake pedal
is depressed when the system detects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or
turning on slippery road surfaces
◆TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from
spinning when starting the vehicle or accelerating on slippery roads
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to
turn the steering wheel
◆PCS (Pre-Collision System) (if equipped)
→ P. 1 6 5
To help enhance driving safety and performance, the following
systems operate automatically in response to various driving
situations. Be aware, however, that these systems are supple-
mentary and should not be relied upon too heavily when operat-
ing the vehicle.

1944-6. Using the driving support systems
■Turning off both TRAC and VSC systems
To turn the TRAC and VSC systems off, press and hold the VSC OFF switch
for more than 3 seconds while the vehicle is stopped.
The “TRAC OFF” indicator and VS C OFF indicator will come on.
Press the switch again to turn the systems back on.
On vehicles with Pre-collision system, Pre-collision brake assist and Pre-colli-
sion braking will also be disabled. The PCS warning light will come on.
( →P. 177)
■ When the “TRAC OFF” indicator comes on even if th e VSC OFF switch
has not been pressed
TRAC system cannot be operated. Contact your Toyota dealer.
■ Sounds and vibrations caused by the ABS, brake assist, TRAC and VSC
systems
● A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate
that a malfunction has occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■ Automatic reactivation of TRAC and VSC systems
After turning the TRAC and VSC systems off, the systems will be automati-
cally re-enabled in the following situations:
● When the engine switch is turned to the “LOCK” position
● If only the TRAC system is turned off, the TRAC will turn on when vehicle
speed increases
If both the TRAC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.

3037-2. Steps to take in an emergency
7
When trouble arises
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
→ Have the vehicle inspected by your Toyota dealer
immediately.
(Except Canada)
(Canada)
ABS warning lightIndicates a malfunction in:
• The ABS; or
• The brake assist system.
→ Have the vehicle inspected by your Toyota dealer
immediately.
Electric power steering system warning light
(warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system.
→ Have the vehicle inspected by your Toyota dealer
immediately.
PCS warning light*2
When the warning light flashes (and a buzzer sounds):
Indicates a malfunction in the PCS (Pre-Collision system)
→ Have the vehicle inspected by your Toyota dealer
immediately.
When the warning light illuminates:
Indicates that the PCS (Pre-Collision system) is temporar-
ily unavailable, possibly due to either of the following:
• The part of the windshield around the front sensor being dirty, fogged up or covered with condensation, ice, stick-
ers, etc.
→ Clear the dirt, fog, condensat ion, ice, stickers, etc.
( →P. 163)
• Front sensor temperature being outside of its opera- tional range
→ Wait for a while until the area around the front sensor
has cooled down sufficiently.
When the warning light is illuminated:
Either the VSC (Vehicle Stability Control) system or PCS
(Pre-Collision system) is disabled or both are disabled.
→ To enable the PCS, enable both the VSC system and
PCS. ( →P. 168, 194)
Warning lightWarning light/Details/Actions

3237-2. Steps to take in an emergency
7
When trouble arises
WARNING
■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, abrupt steering, sudden braking and shift-
ing operations that cause sudden engine braking.
■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.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in
their storage location to reduce the po ssibility of personal injury during a
collision or sudden braking.
■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
●PCS (Pre-Collision System) (if equipped)
●LDA (Lane Departure Alert) (if equipped)
●Automatic High Beam (if equipped)
●Cruise control (if equipped)
●EPS (Electric Power Steering)
■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. Fail-
ure to observe this precaution may lead to an accident causing death or
serious injury.
■When stowing the flat tire
●Make sure the rear seats are in their original position.
●Secure it using a tire tie-down belt. Otherwise, the flat tire may fly out
in case of the sudden braking or an accident, resulting in death or seri-
ous injury.