2020 TOYOTA YARIS brake

213
YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
3-5. Brake
3
When Driving
Hill Launch Assist (HLA)
For vehicles with a manual transaxle, Hill Launch Assist (HLA) oper-
ates on a downward slope when the shift lever is in the reverse (R)
position, and on an upward slope when the shift lever is in a p osition
other than the reve rse (R) position.
For vehicles with an automatic transaxle, Hill Launch Assist (H LA)
operates on a downward slope when the shift lever is in the rev erse
(R) position, and on an upward slope when the shift lever is in a for-
ward gear.
● Hill Launch Assist (HLA) does not operate on a gentle slope. In addition, the
gradient of the slope on which the system will operate changes depending
on the vehicle’s load.
● Hill Launch Assist (HLA) does not operate if the parking brake is applied, the
vehicle has not stopped completely, or the clutch pedal is released.
● While Hill Launch Assist (HLA) is operating, the brake pedal ma y feel stiff
and vibrate, however, this does not indicate a malfunction.
● Hill Launch Assist (HLA) does not operate while the TCS/DSC ind icator light
is illuminated.
Refer to Contact Your Toyota Dealer and Have Vehicle Inspected on P. 493.
● Hill Launch Assist (HLA) does not turn off even if the DSC OFF switch is
pressed to turn off the TCS/DSC.
: If equipped
Hill Launch Assist (HLA) is a f unction which assists the driver in
accelerating from a stop while on a slope. When the driver
releases the brake pedal and depresses the accelerator pedal
while on a slope, the function pr events the vehicle from rolling.
The braking force is maintained automatically after the brake
pedal is released on a steep grade.

214
YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
3-5. Brake
WARNING
■Do not rely completely on Hill Launch Assist (HLA)
Hill Launch Assist (HLA) is an auxiliary device for acceleratin g from a stop
on a slope. The system only operates for about 2 seconds and th erefore,
relying only on the system, when accelerating from a stop is da ngerous
because the vehicle may move (roll) unexpectedly and cause an a ccident.
The vehicle could roll depending on the vehicle’s load or if it is towing some-
thing. In addition, for vehicles with a manual transaxle, the vehicle could still
roll depending on how the clutch pedal or the accelerator pedal is operated.
Always confirm the safety around the vehicle before starting to drive the
vehicle.

215
YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
3-6. ABS/TCS/DSC
3
When Driving
Antilock Brake System (ABS)
The driver will feel a slight vibration in the brake pedal and may hear a
chattering noise from the brake system. This is normal ABS syst em
operation. Continue to depress the brake pedal without pumping the
brakes.
The warning light turns on when the system has a malfunction.
Refer to Contact Your Toyota Dealer and Have Vehicle Inspected on
P. 493.
● Braking distances may be longer on loose surfaces (snow or grav el, for
example) which usually have a hard foundation. A vehicle with a normal
braking system may require less distance to stop under these co nditions
because the tires will build up a wedge of surface layer when t he wheels
skid.
● The sound of the ABS operating may be heard when starting the engine or
immediately after starting the vehicle, however, it does not in dicate a mal-
function.
The ABS control unit continuously monitors the speed of each
wheel. If one wheel is about to lock up, the ABS responds by
automatically releasing and reapplying that wheel’s brake.
WARNING
■ Do not rely on ABS as a su bstitute for safe driving
The ABS cannot compensate for unsafe and reckless driving, exce ssive
speed, tailgating (following another vehicle too closely), driv ing on ice and
snow, and hydroplaning (reduced tire friction and road contact because of
water on the road surface). You can still have an accident.

216
YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
3-6. ABS/TCS/DSC
Traction Control System (TCS)
The warning light turns on when the system has a malfunction.
Refer to Contact Your Toyota Dealer and Have Vehicle Inspected on
P. 493.
To turn off the TCS, press the DSC OFF switch ( P. 219).
The Traction Control System (TCS) enhances traction and safety
by controlling engine torque and braking. W hen the TCS detects
driving wheel slippage, it lower s engine torque and operates th e
brakes to prevent loss of traction.
This means that on a slick surface , the engine adjusts automati-
cally to provide optimum power to the drive wheels, limiting
wheel spin and loss of traction.
WARNING
■ Do not rely on the Traction Cont rol System (TCS) as a substitute for
safe driving
The Traction Control System (TCS) cannot compensate for unsafe and
reckless driving, excessive speed, tailgating (following anothe r vehicle too
closely), and hydroplaning (reduced tire friction and road contact because
of water on the road surface). You can still have an accident.
■ Use snow tires or tire chains and drive at reduced speeds when roads
are covered with ice and/or snow
Driving without proper traction devices on snow and/or ice-cove red roads is
dangerous. The Traction Control System (TCS) alone cannot provide ade-
quate traction and you could still have an accident.

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
2173-6. ABS/TCS/DSC
3
When Driving
This indicator light stays on for a
few seconds when the ignition is
switched ON. If the TCS or DSC is
operating, the indicator light
flashes.
If the light stays on, the TCS, DSC or the brake assist system may
have a malfunction and they may not operate correctly. Take you r
vehicle to your Toyota dealer.
● In addition to the indicator light flashing, a slight lugging s ound will come
from the engine. This indicates that the TCS/DSC is operating p roperly.
● On slippery surfaces, such as fresh snow, it will be impossible to achieve
high rpm when the TCS is on.
TCS/DSC Indicator Light

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
2193-6. ABS/TCS/DSC
3
When Driving
This indicator light stays on for a
few seconds when the ignition is
switched ON. If the TCS or DSC is
operating, the indicator light
flashes.
If the light stays on, the TCS, DSC or the brake assist system may
have a malfunction and they may not operate correctly. Take you r
vehicle to your Toyota dealer.
This indicator light stays on for a
few seconds when the ignition is
switched ON.
It also illuminates when the DSC
OFF switch is pressed and TCS/
DSC is switched off.
Refer to DSC OFF Switch on P. 219.
If the light remains illuminated and the TCS/DSC is not switche d off,
take your vehicle to your Toyota dealer. The DSC may have a mal -
function.
Press the DSC OFF switch to turn
off the TCS/DSC. The DSC OFF
indicator light in the combination
meter will illuminate.
Press the switch again to turn the TCS/DSC back on. The DSC OFF
indicator light will turn off.
TCS/DSC Indicator Light
DSC OFF Indicator Light
DSC OFF Switch

228
YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
3-10. Active Safety System
Low Speed Pre-Collision System
The Low Speed Pre-Collision System is designed to reduce
damage in the event of a colli sion by operating the brake control
(Low Speed Pre-Collision System brake) when the system’s
laser sensor detects a vehicle a head and determines that a colli-
sion with a vehicle ahead is unavo idable. It may also be possible
to avoid a collision if the relat ive speed between your vehicle
and a vehicle ahead is less than about 12 mph (20 km/h).
In addition, when the driver depresses the brake pedal while th e
system is in the operation range at about 2 to 18 mph (4 to
30 km/h), the brakes are applied firmly and quickly to assist.
(Brake Assist (Low Speed Pre-Collision System brake assist))
Laser sensor

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
2313-10. Active Safety System
3
When Driving
WARNING
■Do not rely on the Low Speed Pre -Collision System as a substitute for
safer driving
The Low Speed Pre-Collision System cannot compensate for unsafe and
reckless driving, excessive speed, tailgating (following anothe r vehicle too
closely), and driving on slippery roads such as wet, snowy, and icy roads
(reduced tire friction and road contact because of water on the road sur-
face). You can still have an accident.
■ Do not rely completely on the Low Speed Pre-Collision System
● The Low Speed Pre-Collision System is only designed to reduce d amage
in the event of a collision. Over reliance on the system leadin g to the
accelerator pedal or brake pedal being mistakenly operated coul d result in
an accident.
● The Low Speed Pre-Collision System is a system which operates in
response to a vehicle ahead. The system may not be able to detect or
react to two-wheeled vehicles or pedestrians.
● The laser sensor for the Low Speed Pre-Collision System is inst alled near
the rearview mirror. To assure the correct operation of the Low Speed Pre-
Collision System, heed the following cautions.
• Do not apply stickers to the surface of the windshield near the laser sensor (including transparent stickers). Otherwise, the laser s ensor
may not be able to detect vehicles ahead which could result in an acci-
dent.
• Do not apply coating agent to the windshield. Otherwise, the l aser sen-
sor may not be able to detect vehicles or obstructions in front which
could result in an accident.
• Do not disassemble the laser sensor.
• If cracks or damage caused by flying gravel or debris is visib le near
the laser sensor, stop using the Low Speed Pre-Collision System
immediately and have your vehicle inspected by your Toyota deal er. If
the vehicle continues to be driven with cracks or scratch marks left on
the windshield near the laser sensor, the system may operate un nec-
essarily and cause an unexpected accident.
Refer to Stopping The Low Speed Pre-Collision System Operation on
P. 2 3 3 .
• When replacing the windshield wi pers or windshield, consult your
Toyota dealer.
● The laser sensor includes a function for detecting a soiled windshield and
informing the driver, however, depending on the conditions, it may not
detect plastic shopping bags, ice or snow on the windshield. In such
cases, the system cannot accurately determine a vehicle ahead a nd may
not be able to operate normally. Always drive carefully and pay attention to
the road ahead.