2018 TOYOTA YARIS brake sensor

2414-3. Operating the lights and wipers
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Driving
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■Daytime running light system
To make your vehicle more visible to other drivers during daytime driving, the
daytime running lights turn on automatically whenever the hybrid system is
operated and the parking brake is released with the headlight switch off or in
the “AUTO” position. (Illuminate brighter than the front position lights.) Day-
time running lights are not designed for use at night.
■ Headlight control sensor
■ Automatic light off system (if equipped)
Vehicles without a smart entry & start system
● When the light switch is in or : The headlights and front fog
lights turn off automatically when the power switch is turned to the “LOCK”
position.
● When the light switch is in : The headlights and all the lights turn off
automatically when the power switch is turned to the “LOCK” position.
To turn the lights on again, turn the power switch to the “ON” position, or turn
the light switch to once and then back to or .
Vehicles with a smart entry & start system
● When the light switch is in or : The headlights turn off automati-
cally if the power switch is turned to ACCESSORY mode or turned off and
the driver’s door is opened.
● When the light switch is in : The headlights and tail lights turn off auto-
matically if the power switch is tu rned to ACCESSORY mode or turned off
and the driver’s door is opened.
To turn the lights on again, turn the power switch to ON mode, or turn the light
switch to once and then back to or .
The sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the
windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight sys-
tem to malfunction.

2624-5. Toyota Safety Sense
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PCS (Pre-Crash Safety system)
◆Pre-crash warning
When the system determines
that the possibility of a frontal
collision is high, a buzzer will
sound, the PCS activation indi-
cator will flash*1 or a warning
message will be displayed in
the multi-information display*2,
and the system will urge the
driver to take evasive action.
*1: Vehicles with monochrome display
*2: Vehicles with color display
: If equipped
The pre-crash safety system uses the front sensor to detect
vehicles in front of your vehicle. When the system determines
that the possibility of a frontal collision with a vehicle is high, a
warning operates to urge the driver to take evasive action and
the potential brake pressure is increased to help the driver avoid
the collision.
If the system determines that the possibility of a frontal collision
with a vehicle is extremely high, the brakes are automatically
applied to help avoid the collision or help reduce the impact of
the collision.
The pre-crash safety system can be disabled/enabled and the warn-
ing timing can be changed. ( P. 266)
*1
*2

2764-5. Toyota Safety Sense
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• If the wheels are misaligned
• If a wiper blade is blocking the front sensor
• The vehicle is wobbling.
• The vehicle is being driven at extremely high speeds.
• When driving on roads with sharp bends or uneven surfaces
• When a preceding vehicle is a poor reflector of laser
● In some situations such as the following, sufficient braking force may not be
obtained, preventing the system from performing properly:
• If the braking functions cannot operate to their full extent, such as when
the brake parts are extremely cold, extremely hot, or wet
• If the vehicle is not properly maintained (brakes or tires are excessively
worn, improper tire inflation pressure, etc.)
• When the vehicle is being driven on a gravel road or other slippery sur-
face
• If your vehicle is skidding
• When the front part of the vehicle is
raised or lowered
• When the sensor is misaligned due to
a strong impact being applied to the
sensor, etc.

5198-2. Steps to take in an emergency
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When trouble arises
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ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer 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 any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
PCS warning light (if equipped)
When the warning light flashes (and a buzzer sounds):
Indicates a malfunction in the PCS (Pre-Crash Safety sys-
tem)
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
When the warning light illuminates:
Indicates that the PCS (Pre-Crash Safety system) is tem-
porarily 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, condensation, ice, stickers, etc.
( P. 259)
• 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.
• Either the VSC system or PCS (Pre-Crash Safety sys-
tem) is disabled or both are disabled.
 To enable the PCS, enable both the VSC system and
PCS. ( P. 266, 305)
Warning lightWarning light/Details/Actions