sensor TOYOTA PRIUS C 2018 (in English) Owner's Manual

2414-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)■
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. 380)
• 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. 268), 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-COLLI-
SION BRAKE SYSTEM UNAVAILABLE” is displayed on the multi-informa-
tion display.

2424-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)
When driving on roads with white (yellow) lines, this function alerts the
driver when the vehicle might depart from its lane.
The LDA system recognizes visi-
ble white (yellow) lines with the
front sensor on the upper portion
of the front windshield.
When the system determines that
the vehicle might depart from its
lane, a warning is displayed on
the multi-information display and
the warning buzzer sounds to
alert the driver.
When the warning buzzer sounds,
check the surrounding road situa-
tion and carefully operate the
steering wheel to move the vehicle
back to the center within the white
(yellow) lines.
LDA (Lane Depa rture Alert)
Summary of function
Lane departure alert function

2454-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)
■Operation conditions
This function operates when all of the following conditions are met.
●LDA is turned on.
● Vehicle speed is approximately 32 mph (50 km/h) or more.
● System recognizes white (yellow) lines.
● Width of traffic lane is approximately 9.8 ft. (3 m) or more.
● Turn signal lever is not operated.
● Vehicle is driven on a straight road or around a gentle curve with a radius of
more than approximately 492 ft. (150 m).
● No system malfunctions are detected. ( →P. 481)
■ Temporary cancellation of functions
When operation conditions are no longer met, a function may be temporarily\
canceled. However, when the operation conditions are met again, operation
of the function is automatically restored.
■ Lane departure alert function
The warning buzzer may be difficult to hear due to external noise, audio play-
back, etc.
■ White (yellow) lines are only on one side of road
The LDA system will not operate for the side on which white (yellow) lines
could not be recognized.
■ After the vehicle has been parked in the sun
The LDA system may not be available and a warning message may be dis-
played for a while after starting off. When the temperature in the cabin
decreases and the temperature around the front sensor ( →P. 225) becomes
suitable for its operation, the system will begin to operate.

2464-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)■
Conditions in which functions may not operate properly
In the following situations, the front sensor may not detect white (yellow) lines
and various functions may not operate normally.
●There are shadows on the road that run parallel with, or cover, the white
(yellow) lines.
● The vehicle is driven in an area without white (yellow) lines, such as in front
of a tollgate or checkpoint, or at an intersection, etc.
● The white (yellow) lines are cracked, “Botts’ dots”, “Raised pavement
marker” or stones are present.
● The white (yellow) lines cannot be seen or are difficult to see due to sand,
etc.
● The vehicle is driven on a road surface that is wet due to rain, puddles, etc.
● The traffic lines are yellow (which may be more difficult to recognize than
lines that are white).
● The white (yellow) lines cross over a curb, etc.
● The vehicle is driven on a bright surface, such as concrete.
● The vehicle is driven on a surface that is bright due to reflected light, etc.
● The vehicle is driven in an area where the brightness changes suddenly,
such as at the entrances and exits of tunnels, etc.
● Light from the headlights of an oncoming vehicle, the sun, etc., enters the
camera.
● The vehicle is driven where the road diverges, merges, etc.
● The vehicle is driven on a slope.
● The vehicle is driven on a road which tilts left or right, or a winding road.
● The vehicle is driven on an unpaved or rough road.
● The vehicle is driven around a sharp curve.
● The traffic lane is excessively narrow or wide.
● The vehicle is extremely tilted due to carrying heavy luggage or having
improper tire pressure.
● The distance to the preceding vehicle is extremely short.
● The vehicle is moving up and down a large amount due to road conditions
during driving (poor roads or road seams).
● The headlight lenses are dirty and emit a faint amount of light at night, or the
beam axis has deviated.
● The vehicle has just changed lanes or crossed an intersection.
■ Warning messages
Warning messages are used to indicate a system malfunction or to inform t\
he
driver of the need for caution while driving. ( →P. 490)
■ Customization
→P. 106

2474-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)
Push the lever away from you
with the headlight switch in the position.
Press the Automatic High
Beam switch.
The Automatic High Beam indica-
tor will come on when the head-
lights are turned on automatically
to indicate that the system is
active.
Automatic High Beam
The Automatic High Beam uses an in-vehicle front sensor to
assess the brightness of streetlights, the lights of vehicles
ahead etc., and automatically turns the high beam on or off as
necessary.
WARNING
■ Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Always drive safely, taking care to
observe your surroundings and turning the high beam on or off manually if
necessary.
■ To prevent incorrect operation of the Automatic High Beam system
Do not overload the vehicle.
Activating the Automatic High Beam system
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2

2494-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)
■High beam automatic turning on or off conditions
●When all of the following conditions are fulfilled, the high beam will be auto-
matically turned on (after approximately 1 second):
• Vehicle speed is approximately 21 mph (33 km/h) or more.
• The area ahead of the vehicle is dark.
• There are no vehicles ahead with headlights or tail lights turned on.
• There are few streetlights on the road ahead.
● If any of the following conditions is met, the high beams will turn off automat-
ically:
• Vehicle speed is below approx imately 17 mph (27 km/h).
• The area ahead of the vehicle is not dark.
• Vehicles ahead have their headlights or tail lights turned on.
• There are many streetlights on the road ahead.
■ Front sensor detection information
●The high beam may not be automatically turned off in the following situa-
tions:
• When vehicles ahead suddenly appear from a curve
• When the vehicle is cut in front of by another vehicle
• When vehicles ahead are hidden from sight due to repeated curves, road
dividers or roadside trees
• When vehicles ahead appear from the faraway lane on wide road
• When vehicles ahead have no lights
● The high beam may be turned off if a vehicle ahead that is using fog lights
without using the headlights is detected.
● House lights, street lights, traffic signals, and illuminated billboards or signs
may cause the high beam to switch to the low beams, or the low beams to
remain on.
● The following factors may affect the amount of time taken to turn the high
beam on or off:
• The brightness of headlights, fog lights, and tail lights of vehicles ahe\
ad
• The movement and direction of vehicles ahead
• When a vehicle ahead only has operational lights on one side
• When a vehicle ahead is a two-wheeled vehicle
• The condition of the road (gradient, curve, condition of the road surface,
etc.)
• The number of passengers and amount of luggage
● The high beam may be turned on or off when the driver does not expect it.
● Bicycles or similar objects may not be detected.

2504-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)●
In the situations shown below, the system may not be able to accurately
detect surrounding brightness levels. This may cause the low beams to
remain on or the high beams to cause problems for pedestrians, vehicles
ahead or other parties. In these cases, manually switch between the high
and low beams.
• In bad weather (rain, snow, fog, sandstorms, etc.)
• The windshield is obscured by fog, mist, ice, dirt, etc.
• The windshield is cracked or damaged.
• The front sensor is deformed or dirty.
• The front sensor temperature is extremely high.
• Surrounding brightness levels are equal to those of headlights, tail lights
or fog lights.
• Vehicles ahead have headlights or tail lights that are either switched off,
dirty, are changing color, or are not aimed properly.
• When driving through an area of in termittently changing brightness and
darkness.
• When frequently and repeatedly driving ascending/descending roads, or roads with rough, bumpy or uneven surfaces (such as stone-paved
roads, gravel tracks, etc.).
• When frequently and repeatedly taking curves or driving on a winding road.
• There is a highly reflective object ahead of the vehicle, such as a sign or
a mirror.
• The back of a vehicle ahead is highly reflective, such as a container on a truck.
• The vehicle’s headlights are damaged or dirty, or are not aimed properly.
• The vehicle is listing or titling due to a flat tire, a trailer being towed, etc.
• The high beam and low beam are repeatedly being switched between in an abnormal manner.
• The driver believes that the high beam may be causing problems or dis-
tress to other drivers or pedestrians nearby.

2514-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)■
Temporarily lowering sensor sensitivity
The sensitivity of the sensor can be temporarily lowered.
Vehicles without a smart key system: Turn the power switch off while the
following conditions are met.
Vehicles with a smart key system: Turn the power switch off while the fol-
lowing conditions are met
• The headlight switch is in .
• The headlight switch lever is in high beam position.
• Automatic High Beam switch is on.
Vehicles without a smart key system: Turn the power switch to the “ON”
position.
Vehicles with a smart key system: Turn the power switch to ON mode.
Within 60 seconds after , repeat pulling the headlight switch lever to the
original position then pushing it to the high beam position quickly 10 times,
then leave the lever in high beam position.
If the sensitivity is changed, the Automatic High Beam indicator is turn on
and off 3 times.
Automatic High Beam (headlights) may turn on even the vehicle is stopped.
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4037-1. Maintenance and care
7
Maintenance and care
PRIUS c_U (OM52G95U)■
Aluminum wheels (if equipped)
●Remove any dirt immediately by using a neutral detergent.
● Wash detergent off with water immediately after use.
● To protect the paint from damage, make sure to observe the following pre-
cautions.
• Do not use acidic, alkaline or abrasive detergent
• Do not use hard brushes
• Do not use detergent on the wheels when they are hot, such as after driv-
ing or parking in hot weather
■ Bumpers
Do not scrub with abrasive cleaners.
WARNING
■When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may
cause the electrical components etc. to catch fire.
■ When cleaning the windshield
Installation area of front sensor on windshield: →P. 228
■ Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has
cooled sufficiently, as touching a hot exhaust pipe can cause burns.
NOTICE
■To prevent paint deterioration and corrosion on the body and compo-
nents (aluminum wheels etc.)
● Wash the vehicle immediately in the following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on the paint surface
• If dead insects, insect droppings or bird droppings are present on the
paint surface
• After driving in an area contaminated with soot, oily smoke, mine dust, iron powder or chemical substances
• If the vehicle becomes heavily soiled with dust or mud
• If liquids such as benzene and gasoline are spilled on the paint surface
● If the paint is chipped or scratched, have it repaired immediately.
● To prevent the wheels from corroding, remove any dirt and store in a place
with low humidity when storing the wheels.

4848-2. Steps to take in an emergency
PRIUS c_U (OM52G95U)
*1: Brake system warning buzzer: When there is a possible problem that could affect braking performance,
the warning light will come on and a warning buzzer will sound.
*2: Parking brake engaged warning buzzer →P. 205, 494
PCS warning light 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, conden sation, ice, stickers, etc.
( →P. 227)
• 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-Collision system) is
disabled or both are disabled.
→ To enable the PCS, enable both the VSC system and
PCS. ( →P. 232, 268)
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( →P. 486)
• Flat tire ( →P. 507)
→ Adjust the tire inflation pressure to the specified
level.
The light will turn off af ter a few minutes. In case
the light does not turn off even if the tire inflation
pressure is adjusted, have the system checked by
your Toyota dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
( → P. 487)
→ Have the system checked by your Toyota dealer.
Warning lightWarning light/Details/Actions