warning light TOYOTA COROLLA 2017 11.G Service Manual

2124-5. Using the driving support systems
COROLLA_TMMMS_TMMC_U (OM02494U)
WARNING
■To avoid malfunction of the camera sensor
Observe the following precautions.
Otherwise, the camera sensor may not operate properly, possibly leading to
an accident resulting in death or serious injury.
●Keep the windshield clean at all times.
• If the windshield is dirty or covered with an oily film, water droplets,
snow, etc., clear the windshield.
• If a glass coating agent is applied to the windshield, it will still be neces-
sary to use the windshield wipers to remove water droplets, etc. from
the area of the windshield in front of the camera sensor.
• If the inner side of the windshield where the camera sensor is installed
is dirty, contact your Toyota dealer.
●If the part of the windshield in front of the camera sensor is fogged up or
covered with condensation or ice, use the windshield defogger to remove
the fog, condensation or ice. (→P. 372, 380)
●If water droplets cannot be properly removed from the area of the wind-
shield in front of the camera sensor by the windshield wipers, replace the
wiper insert or wiper blade.
If the wiper inserts or wiper blades need to be replaced, contact your
Toyota dealer.
●Do not attach window tinting to the windshield.
●Replace the windshield if it is damaged or cracked.
If the windshield needs to be replaced, contact your Toyota dealer.
●Do not get the camera sensor wet.
●Do not allow bright lights to shine into the camera sensor.
●Do not dirty or damage the camera sensor.
When cleaning the inside of the windshield, do not allow glass cleaner to
contact the lens. Also, do not touch the lens.
If the lens is dirty or damaged, contact your Toyota dealer.
●Do not install an antenna or attach stick-
ers (including transparent stickers) or
other items to the area of the windshield
in front of the camera sensor (shaded
area in the illustration).

2134-5. Using the driving support systems
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Driving
COROLLA_TMMMS_TMMC_U (OM02494U)
WARNING
●Do not subject the camera sensor to a strong impact.
●Do not change the installation position or direction of the camera sensor or
remove it.
●Do not disassemble the camera sensor.
●Do not install an electronic device or device that emits strong electric
waves near the camera sensor.
●Do not modify any components of the vehicle around the camera sensor
(inside rear view mirror, etc.) or ceiling.
●Do not attach any accessories that may obstruct the camera sensor to the
hood, front grille or front bumper. Contact your Toyota dealer for details.
●If a surfboard or other long object is to be mounted on the roof, make sure
that it will not obstruct the camera sensor.
●Do not modify the headlights or other lights.

2204-5. Using the driving support systems
COROLLA_TMMMS_TMMC_U (OM02494U)■
Enabling/disabling the pre-collision system
The pre-collision system can be enabled/disabled on the settings
display (→P. 95) of the multi-information display.
The system is automatically enabled each time the engine switch is
turned to the “ON” position (vehicles without a smart key system) or
IGNITION ON mode (vehicles with a smart key system).
If the system is disabled, the
PCS warning light will turn on
and a message will be dis-
played on the multi-information
display.
■Changing the pre-collision warning timing
The pre-collision warning timing can be changed on the settings
display (→P. 95) of the multi-information display.
The operation timing setting is retained when the engine switch is
turned off.
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 the pre-collision system
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2214-5. Using the driving support systems
4
Driving
COROLLA_TMMMS_TMMC_U (OM02494U)
■Operational conditions
Availability of the pedestrian detection function depends on the region in
which the vehicle was sold.
Read the following for details:
Region A
(The pedestrian detection function is available)
The pre-collision system is enabled and the system determines that the pos-
sibility of a frontal collision with a vehicle or pedestrian is high.
Each function is operational at the following speeds:
●Pre-collision warning:
• Vehicle speed is between approximately 7 and 110 mph (10 and 180 km/h).
(For detecting a pedestrian, vehicle speed is between approximately 7 and
50 mph [10 and 80 km/h].)
• The relative speed between your vehicle and the vehicle or pedestrian
ahead is approximately 7 mph (10 km/h) or more.
●Pre-collision brake assist:
• Vehicle speed is between approximately 19 and 110 mph (30 and 180 km/h).
(For detecting a pedestrian, vehicle speed is between approximately 19 and
50 mph [30 and 80 km/h].)
• The relative speed between your vehicle and the vehicle or pedestrian
ahead is approximately 19 mph (30 km/h) or more.
●Pre-collision braking:
• Vehicle speed is between approximately 7 and 110 mph (10 and 180
km/h). (For detecting a pedestrian, vehicle speed is between approxi-
mately 7 and 50 mph [10 and 80 km/h].)
• The relative speed between your vehicle and the vehicle or pedestrian
ahead 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)
●If the PCS (Pre-Collision System) warning light is flashing or illuminated
RegionsFunction availability
Region AThe pedestrian detection function is available
Region BThe pedestrian detection function is not available

2224-5. Using the driving support systems
COROLLA_TMMMS_TMMC_U (OM02494U)
Region B
(The pedestrian detection function is not available)
The pre-collision system is enabled and the system determines that the pos-
sibility of a frontal collision with a vehicle is high.
Each function is operational at the following speeds:
●Pre-collision warning:
• Vehicle speed is between approximately 10 and 110 mph (15 and 180
km/h).
• The relative speed between your vehicle and the vehicle ahead is
approximately 7 mph (10 km/h) or more.
●Pre-collision brake assist:
• Vehicle speed is between approximately 19 and 110 mph (30 and 180
km/h).
• The relative speed between your vehicle and the vehicle ahead is
approximately 19 mph (30 km/h) or more.
●Pre-collision braking:
• Vehicle speed is between approximately 10 and 110 mph (15 and 180
km/h).
• The relative speed between your vehicle and the vehicle ahead 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)
●If the PCS (Pre-Collision System) warning light is flashing or illuminated

2284-5. Using the driving support systems
COROLLA_TMMMS_TMMC_U (OM02494U)●Some pedestrians such as the following may not be detected by the radar
sensor and camera sensor, preventing the system from operating prop-
erly
*2:
• Pedestrians shorter than approximately 3.2 ft. (1 m) or taller than approx-
imately 6.5 ft. (2 m)
• Pedestrians wearing oversized clothing (a rain coat, long skirt, etc.), mak-
ing their silhouette obscure
• Pedestrians who are carrying large baggage, holding an umbrella, etc.,
hiding part of their body
• Pedestrians who are bending forward or squatting
• Pedestrians who are pushing a stroller, wheelchair, bicycle or other vehi-
cle
• Groups of pedestrians which are close together
• Pedestrians who are wearing white and look extremely bright
• Pedestrians in the dark, such as at night or while in a tunnel
• Pedestrians whose clothing appears to be nearly the same color or
brightness as their surroundings
• Pedestrians near walls, fences, guardrails, or large objects
• Pedestrians who are on a metal object (manhole cover, steel plate, etc.)
on the road
• Pedestrians who are walking fast
• Pedestrians who are changing speed abruptly
• Pedestrians running out from behind a vehicle or a large object
• Pedestrians who are extremely close to the side of the vehicle (outside
rear view mirror, etc.)
*2: Depending on the region in which the vehicle was sold, the pedestrian
detection function may not be available.
■If the PCS (Pre-Collision System) warning light flashes and a warning
message is displayed on the multi-information display
The pre-collision system may be temporarily 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 radar sensor or camera sensor or the area around either sen-
sor is hot, such as in the sun
• When the radar sensor or camera sensor or the area around either sen-
sor is cold, such as in an extremely cold environment
• When the radar sensor or front grille emblem is dirty or covered with
snow, etc.
• If the camera sensor is obstructed, such as when the hood is open or a
sticker is attached to the windshield near the camera sensor
●If the PCS (Pre-Collision System) warning light continues to flash or the
warning message does not disappear, the system may be malfunctioning.
Have the vehicle inspected by your Toyota dealer immediately.

2294-5. Using the driving support systems
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Driving
COROLLA_TMMMS_TMMC_U (OM02494U)■If VSC is disabled
●If VSC is disabled (→P. 264), the pre-collision brake assist and pre-collision
braking functions are also disabled.
●The PCS (Pre-Collision System) warning light will turn on and “VSC Turned
Off Pre-Collision Brake System Unavailable” will be displayed on the multi-
information display.

2334-5. Using the driving support systems
4
Driving
COROLLA_TMMMS_TMMC_U (OM02494U)
Press the LDA switch to turn the
LDA system on.
The LDA indicator illuminates and
a message is displayed on the
multi-information display.
Press the LDA switch again to turn
the LDA system off.
When the LDA system is turned on
or off, operation of the LDA system
continues in the same condition
the next time the engine is started.
WARNING
■Preventing LDA system malfunctions and operations performed by
mistake
●Do not modify the headlights or place stickers, etc., on the surface of the
lights.
●Do not modify the suspension etc. If the suspension etc. needs to be
replaced, contact your Toyota dealer.
●Do not install or place anything on the hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar, etc.).
●If your windshield needs repairs, contact your Toyota dealer.
Turning LDA system on

2434-5. Using the driving support systems
4
Driving
COROLLA_TMMMS_TMMC_U (OM02494U)
This mode employs a radar sensor to detect the presence of vehicles
up to approximately 320 ft. (100 m) ahead, determines the current
vehicle-to-vehicle following distance, and operates to maintain a suit-
able following distance from the vehicle ahead.
Note that vehicle-to-vehicle distance will close in when traveling on long
downhill slopes.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-
vehicle distance can also be set by operating the vehicle-to-vehicle dis-
tance switch.
Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed
appears
When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a greater reduction in vehicle speed is
necessary, the system applies the brakes (the stop lights will come on at
this time). The system will respond to changes in the speed of the vehicle
ahead in order to maintain the vehicle-to-vehicle distance set by the driver.
Approach warning warns you when the system cannot decelerate suffi-
ciently to prevent your vehicle from closing in on the vehicle ahead.
Example of acceleration
When there are no longer any preceding vehicles driving slower
than the set speed
The system accelerates until the set speed is reached. The system then
returns to constant speed cruising.
Driving in vehicle-to-vehicle distance control mode
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2664-5. Using the driving support systems
COROLLA_TMMMS_TMMC_U (OM02494U)
WARNING
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded (such as
excessively worn tires on a snow covered road).
●The vehicle hydroplanes while driving at high speed on wet or slick roads.
■Stopping distance when the ABS is operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the
following situations:
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with potholes or uneven surfaces
■TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC system is operating.
Drive the vehicle carefully in conditions where stability and power may be
lost.
■Hill-start assist control does not operate effectively when
●Do not overly rely on hill-start assist control. Hill-start assist control may
not operate effectively on steep inclines and roads covered with ice.
●Unlike the parking brake, hill-start assist control is not intended to hold the
vehicle stationary for an extended period of time. Do not attempt to use
hill-start assist control to hold the vehicle on an incline, as doing so may
lead to an accident.
■When the VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.
■When the TRAC or VSC system is turned off
Be especially careful and drive at a speed appropriate to the road condi-
tions. As these are the systems to help ensure vehicle stability and driving
force, do not turn the TRAC or VSC system off unless necessary.