2018 TOYOTA COROLLA iM brake sensor

1434-3. Operating the lights and wipers
4
Driving
COROLLA iM_U (OM12M42U)
■Daytime running light system
●The daytime running lights illuminate using the same lights as the parking
lights and illuminate brighter than the parking lights.
● To make your vehicle more visible to other drivers during daytime driving,
the daytime running lights turn on automatically when all of the following
conditions are met. (The daytime running lights are not designed for use at
night.)
• The engine is running
• The parking brake is released
• The headlight switch is in the (type B only), or “AUTO”
*
position
*: When the surroundings are bright
The daytime running lights remain on after they illuminate, even if the parking
brake is set again.
● For the U.S.A.: Daytime running lights can be turned off by operating the
switch.
● Compared to turning on the headlights, the daytime running light system
offers greater durability and consumes less electricity, so it can help improve
fuel economy.
■ Headlight control sensor
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.

1544-5. Using the driving support systems
COROLLA iM_U (OM12M42U)
The pre-collision system is equipp ed with a sophisticated computer
that will record cert ain data, such as:
• Accelerator status
• Brake status
• Vehicle speed
• Operation status of the pre-collision system functions
• Information (such as the distanc e and relative speed between your
vehicle and the vehicle ahead or other objects)
• Images from the front sensor (ava ilable only when the pre-collision
braking function is operating)
The pre-collision system does not record conversations, sounds or
images of the inside of the vehicle.
● Data usage
Toyota may use the data recorded in this computer to diagnose
malfunctions, conduct research and development, and improve
quality.
Toyota will not disclose the recor ded data to a third party except:
• With the consent of the vehicle owner or with the consent of the lessee if the vehicle is leased
• In response to an official request by the police, a court of law or a
government agency
• For use by Toyota in a lawsuit
• For research purposes where the data is not tied to a specific vehicle or vehicle owner
● Recorded images can be erased using a specialized device.
The image recording function can be disabled. However, if the func-
tion is disabled, data from when the pre-collision system operates
will not be available.
Vehicle data recording

1594-5. Using the driving support systems
4
Driving
COROLLA iM_U (OM12M42U)
◆Pre-collision warning
When the system determines
that the possibility of a frontal
collision is high, a buzzer will
sound and a warning message
will be displayed on the multi-
information display to urge the
driver to take evasive action.
◆Pre-collision brake assist
When the system determines that the possibility of a frontal colli-
sion with a vehicle is high, the system applies greater braking force
in relation to how strongly the brake pedal is depressed.
◆Pre-collision braking
When the system determines that the possibility of a frontal colli-
sion with a vehicle is high, the sy stem warns the driver. If the sys-
tem determines that the possibility of a collision is extremely high,
the brakes are automatically appli ed to help avoid the collision or
reduce the collision speed.
PCS (Pre-Collision System)∗
∗: If equipped
The pre-collision system uses the front sensor to detect vehi-
cles in front of your vehicle. When the system determines that
the possibility of a frontal collisi on with a vehicle is high, a warn-
ing 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 determin es that the possibility of a fron-
tal collision with a vehicle is extremely high, the brakes are auto-
matically applied to help avoid the collision or help reduce the
impact of the collision.
The pre-collision system can be disabled/enabled and the warning
timing can be changed. ( →P. 162)

1704-5. Using the driving support systems
COROLLA iM_U (OM12M42U)• 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.

1714-5. Using the driving support systems
4
Driving
COROLLA iM_U (OM12M42U)■
If the PCS warning light flashes or illuminates and a warning message is
displayed on the mult i-information display
The pre-collision system may be tem porarily unavailable or there may be a
malfunction in the system.
● In the following situations, the warning light will turn off, the message will
disappear and the system will become operational when normal operating
conditions return:
• When the area around the front sensor is hot, such as in the sun
• When the windshield is fogged up or covered with condensation or ice
(→ P. 199)
• When driving in conditions where the front sensor cannot detect an object, such as in the dark (at night on a road without street lights or other
lights, etc.), when bright light is shining into the sensor, or in snow or fog.
• 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 or the warning mes-
sage does not disappear, the system may be malfunctioning. Have the vehi-
cle inspected by your Toyota dealer immediately.
■ If VSC is disabled
●If TRAC and VSC are disabled ( →P. 188), 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 and “VSC Turned Off Pre-Collision Brake
System Unavailable” is displayed on the multi-information display.

376Alphabetical index
COROLLA iM_U (OM12M42U)
Emergency flashers ................ 282
Engine....................................... 326Compartment ........................ 238
Engine switch........................ 128
Hood ..................................... 235
How to start the engine................................. 128
Identification number ............ 325
If the engine will not start ...... 314
Ignition switch (engine switch) ................... 128
Overheating .......................... 318
Engine coolant ......................... 242 Capacity ................................ 328
Checking ............................... 242
Preparing and checking before winter....................... 192
Engine coolant temperature gauge........................................ 74
Engine immobilizer system ...... 66
Engine oil ................................. 239
Capacity ................................ 326
Checking ............................... 239
Preparing and checking before winter....................... 192
Engine switch .......................... 128
EPS (Electric Power Steering)...... 186 Warning light ......................... 293 Flat tire
Vehicles with a spare tire...... 303
Floor mats .................................. 22
Fluid Brake .................................... 331
Clutch ................................... 330
Continuously variable transmission ....................... 329
Washer ................................. 249
Front interior light ................... 204 Wattage ................................ 332
Front passenger occupant classification system .............. 45
Front personal lights............... 204
Wattage ................................ 332
Front seats ................................. 95 Adjustment.............................. 95
Cleaning ............................... 223
Correct driving posture ........... 24
Head restraints ....................... 98
Front sensor ............................ 155 Automatic High Beam ........... 155
LDA (Lane Departure Alert)................................... 155
PCS (Pre-Collision system)......... ...................... 155
Precautions........................... 156
Front turn signal lights ........... 139 Replacing light bulbs ............ 276
Turn signal lever ................... 139
Wattage ................................ 332F