2020 TOYOTA PRIUS C sensor

2494-5. Toyota Safety Sense C
4
Driving
PRIUS c_U●
In the situations shown below, the system may not be able to accurately
detect surrounding brightness levels. This may cause the low be ams 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 intermittently 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 w inding
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 co ntainer on a
truck.
• The vehicle’s headlights are damaged or dirty, or are not aime d properly.
• The vehicle is listing or titling due to a flat tire, a traile r being towed, etc.
• The high beam and low beam are repeatedly being switched betwe en in
an abnormal manner.
• The driver believes that the high beam may be causing problems or dis-
tress to other drivers or pedestrians nearby.

2504-5. Toyota Safety Sense C
PRIUS c_U■
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 whi le 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 t he “ON”
position.
Vehicles with a smart key system: Turn the power switch to ON m ode.
Within 60 seconds after , repeat pulling the headlight switch l ever to the
original position then pushing it to the high beam position qui ckly 10 times,
then leave the lever in high beam position.
If the sensitivity is changed, the Automatic High Beam indicato r is turn on
and off 3 times.
Automatic High Beam (headlights) may turn on even the vehicle i s stopped.
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4017-1. Maintenance and care
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Maintenance and care
PRIUS c_U■
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.
■ Plated portions
If dirt cannot be remove, clean the parts as follows:
●Use a soft cloth dampened with an approximately 5% solution of neutral
detergent and water to clean the dirt off.
● Wipe the surface with a dry, soft cloth to remove any remaining moisture.
● To remove oily deposits, use alcohol wet wipes or a similar pro duct.
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. 229
■ 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 unti l it has
cooled sufficiently, as touching a hot exhaust pipe can cause b urns.
NOTICE
■To prevent paint deterioration an d 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 presen t 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 pai nt surface

4848-2. Steps to take in an emergency
PRIUS c_U
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (front), side
impact sensors (rear), driver’s seat belt buckle switch, front passenger occu-
pant classification system, “AIR BAG ON” indicator light, “AIR BAG OFF” indi-
cator light, front passenger’s seat belt buckle switch, seat be lt pretensioners
(front), airbags, interconnecting wiring and power sources. ( P. 41)
■ Front passenger detection senso r, passenger seat belt reminder and
warning buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ Electric power steering system wa rning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the vol tage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Push-
ing the tire pressur e warning reset switch will not turn off the tire pressure
warning light.
■The tire pressure warning light may come on due to natural caus es
The tire pressure warning light may come on due to natural caus es such
as natural air leaks and tire inflation pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure w ill turn off the
warning light (afte r a few minutes).
■When a tire is replace d with a spare tire
The compact spare tire is not equipped with a tire pressure war ning valve
and transmitter. If a tire goes flat, the tire pressure warning light will not
turn off even though the flat tire has been replaced with the s pare tire.
Replace the spare tire with the repaired tire and adjust the ti re inflation
pressure. The tire pressure war ning light will go off after a few minutes.

4978-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
Indicates that the accelerator and brake pedals
are being depressed simultaneously, and the
Brake Override System is operating. (P. 173)
 Release the accelerator pedal and depress
the brake pedal.
Indicates that, as the shift lever was shifted while
the accelerator pedal was depressed, Drive-Start
Control was activated. ( P. 173)
A buzzer also sounds.
 Release the accelerator pedal immediately.
Indicates that the accelerator pedal is depressed
with the shift lever in P
 Release the accelerator pedal.
The system is temporarily canceled because the
operating conditions of the front sensor (tempera-
ture, etc.) are not met.
The following systems may be suspended:
• PCS (Pre-Collision system)
• LDA (Lane Departure Alert)
• Automatic High Beam
The system can be operated when the
operating conditions of the front sensor
(temperature, etc.) ar e met. Turn the system
off, wait for a while, and then turn the sys-
tem back on.
The area of the windshield in front of the front
sensor is fogged up or covered with dirt, rain, ice,
snow, etc.
The following systems may be suspended:
• PCS (Pre-Collision system)
• LDA (Lane Departure Alert)
• Automatic High Beam
 Turn the system off, clear the windshield of
dirt, fog, ice, etc. then turn the system back
on. ( P. 228)
Warning messageDetails/Actions
(Flashes)
(Flashes)

591Alphabetical index
PRIUS c_U
Floor mat .................................... 26
FluidBrake .................................... 542
Washer ................................. 430
Fog lights
Replacing light bulbs............. 464
Switch ................................... 212
Front fog lights
Replacing light bulbs............. 464
Switch ................................... 212
Front passenger occupant
classification system .............. 52
Front passenger’s seat belt reminder light ................. 482
Front seats Adjustment ............................ 150
Front sensor............................. 226
Automatic High Beam ........... 226
LDA (Lane Departure Alert)........ 226
PCS (Pre-Collision System)........ 226
Precautions ........................... 227 Front side marker lights
Replacing light bulbs ............ 465
Switch ................................... 208
Wattage ................................ 544
Front turn signal lights
Replacing light bulbs ............ 460
Switch ................................... 206
Wattage ................................ 544
Fuel Capacity................................ 538
Fuel gauge.............................. 99
Information............................ 545
Refueling .............................. 221
Type...................................... 538
Fuel door .................................. 221
Fuel filler door ......................... 221
Fuses ........................................ 454
F

596Alphabetical index
PRIUS c_U
SeatsAdjustment ............................ 150
Adjustment precautions ........ 150
Child seats/child restraint system
installation ............................ 59
Cleaning................................ 403
Front seat adjustment ........... 150
Front seat adjustment precautions ......................... 150
Head restraint ....................... 155
Properly sitting in the seat ...... 28
Seat heaters ......................... 384
Service reminder
indicators ................................. 94 Sensor
Automatic High Beam
system .......... ...................... 226
Front sensor ......................... 226
Laser sensor ......................... 226
LDA (Lane Departure Alert) ....... 226
Monocular camera sensor .... 226
PCS
(Pre-Collision system) ........ 226
Shift lever
If the shift lever cannot be shifted from P ................ 204
Transmission ........................ 202
Shift lock system ..................... 204
Side airbags ............................... 40
Side marker lights Replacing light bulbs ............ 465
Wattage ................................ 544
Side mirror
Adjusting and folding ............ 161
Defogger ............................... 378
Smart key system
Entry function........................ 141
Starting the hybrid system ....... ................. 188, 192
Spare tire
Inflation pressure .................. 543
Storage location.................... 506
Spark plug ................................ 541
Specifications .......................... 536
Speedometer.............................. 99
Steering
Column lock release ..... 190, 195
Steering wheel Adjustment............................ 158
Audio switches...................... 283

597Alphabetical index
PRIUS c_U
Stop lightsReplacing light bulbs............. 464
Storage feature ........................ 388
Storage precautions ................ 183
Stuck If the vehicle becomes stuck ................................... 533
Sun visors ................................ 393
Switch
Automatic High Beam switch ................................. 246
Cruise control........................ 251
Eco drive mode switch .......... 203
Emergency flasher switch ..... 468
EV drive mode switch ........... 199
Fog light switch ..................... 212
Hazard light switch................ 468
Headlight switch.................... 208
Ignition switch ............... 188, 192
LDA (Lane Departure Alert) switch ................................. 243
Light switches ....................... 208
PCS (Pre-Collision system) switch ..... ............... 234
Power door lock switch ......... 130
Power switch................. 188, 192
Power window switch............ 163
Rear window wiper and washer switch ..................... 218
Steering wheel audio
switches.............................. 283
VSC OFF switch ................... 266
Window lock switch............... 163
Wiper and washer ......... 214, 218 Tail lights
Replacing light bulbs ............ 464
Switch ................................... 208
Theft deterrent system Immobilizer system .. ............... 88
Theft prevention labels ........... 91
Theft prevention labels ............. 91
Tire inflation pressure............. 444
Tire information Glossary ............................... 555
Size....................................... 551
Tire identification number ..... 550
Uniform tire quality grading ............................... 553
Tires Chains .................................. 275
Checking............................... 435
If you have a flat tire ............. 505
Inflation pressure .................. 543
Inflation pressure sensor ...... 436
Information............................ 548
Replacing.............................. 505
Rotating tires ........................ 435
Size....................................... 543
Snow tires ............................. 276
Spare tire .............................. 505
Tire pressure warning system ....... ................. 436, 483
Tools ......................................... 506
Total load capacity .................. 185
Towing Dinghy towing ....................... 187
Emergency towing ................ 472
Trailer towing ........................ 186T