2020 TOYOTA PRIUS C warning lights

2464-5. Toyota Safety Sense C
PRIUS c_U
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 streetl ights, 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, ta king care to
observe your surroundings and turning the high beam on or off m anually if
necessary.
■ To prevent incorrect operation o f the Automatic High Beam syste m
Do not overload the vehicle.
Activating the Automatic High Beam system
1
2

4577-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been repla ced, a bulb may
need replacement. ( P. 458)
● If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.
■ If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness f rom damage.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
● Never use a fuse of a higher amperage rating than that indicate d, or use
any other object in place of a fuse.
● Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
● Do not modify the fuses or fuse boxes.
■ Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring
near the fuse box.
Doing so may cause electric shoc k, resulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired b y your
Toyota dealer as soon as possible.

4657-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U
■LED light bulbs
The headlights/daytime running lights, front fog lights (if equipped), side
marker lights, side turn signal lights, stop/tail lights and hi gh mounted stop-
light consist of a number of LEDs. If any of the LEDs burn out, take your vehi-
cle to your Toyota dealer to have the light replaced.
■ Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not
indicate a malfunction. Contact your Toyota dealer for more information in the
following situations:
● Large drops of water have built up on the inside of the lens.
● Water has built up inside the headlight.
WARNING
■Replacing light bulbs
● Turn off the lights. Do not attempt to replace the bulb immedia tely after
turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clea n dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Fa ilure to do so
may result in heat damage, fire, or water entering the headligh t unit. This
may damage the headlights or cause condensation to build up on the lens.
■ To prevent damage or fire
Make sure bulbs are fully seated and locked.

4938-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_UIndicates that the hybrid system has overheated
This message may be displayed when driving
under severe operating conditions. (For exam-
ple, when driving up a long steep hill.)
A buzzer also sounds.
 Stop and check. ( P. 529)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
Turn the high beam on.
Indicates that, since the VSC (Vehicle Stability
Control) system was turned off, the pre-collision
braking and pre-collision brake assist are dis-
abled (The pre-collision warning function will be
operational)
 Turn the VSC on. ( P. 240, 267)
Indicates that the pre-collision system is disabled.
 Have the vehicle inspected by your Toyota
dealer.
Indicates that the hybrid battery (traction battery)
is low A buzzer also sounds.
 When stopping the vehicle for a long
period of time, shift the shift lever to P. The
hybrid battery (traction battery) cannot be
charged with the shift position in N.
Warning messageDetails/Actions
(Flashes)

4948-2. Steps to take in an emergency
PRIUS c_UIndicates that the hybrid battery (traction battery)
power has dropped because a long period of time
has elapsed after shifting the shift lever to N
A buzzer also sounds.
 Shift the shift lever to P and restart the
hybrid system when starting the vehicle.
Indicates that the driver’s door was opened with
the shift position in N, D or B A buzzer also sounds.
 Shift the shift lever to P.
Indicates that the accelerator pedal is depressed
while the shift position is in N A buzzer also sounds.
 Release the accelerator pedal and shift the
shift lever to D, B or R.
Indicates that the power switch is turned to the
“ACC” or “LOCK” position (vehicles without a
smart key system) or the power switch is turned
to ACCESSORY mode or turned off (vehicles
with a smart key system) and the driver’s door is
opened while the lights are turned on A buzzer also sounds.
 Turn the lights off.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)

594Alphabetical index
PRIUS c_U
MaintenanceDo-it-yourself
maintenance ....................... 416
Emission inspection and maintenance (I/M)
programs ............................ 415
General maintenance ........... 412
Maintenance data ................. 536
Maintenance requirements ... 409
Meter Instrument panel light
control................................. 101
Meters ..................................... 99
Microphone .............................. 333
Mirrors
Inside rear view mirror .......... 160
Outside rear view mirror defogger ............................. 378
Outside rear view mirrors...... 161
Vanity mirrors........................ 393
Moon roof ................................. 167
MP3 disc ................................... 300
Multi-information display ........ 103
Navigation system
*
Noise from under vehicle............ 8 Odometer ................................. 100
Oil
Engine oil .............................. 539
Opener Back door ............................. 136
Fuel filler door ....................... 221
Hood ..................................... 419
Outside rear view mirrors
Adjusting and folding ............ 161
Defogger ............................... 378
Outside temperature
display.................................... 101
Overheating, Hybrid system.................................... 529
Parking brake........................... 207
Parking lights Replacing light bulbs ............ 460
Switch ................................... 208
Wattage ................................ 544
PCS (Pre-Collision system) .... 231 PCS (Pre-Collision
system) switch...... .............. 234
Warning light......................... 482
Personal lights Switch ................................... 386
Wattage ................................ 544
Power outlet ............................. 394
Power switch ................... 188, 192
Power windows ....................... 163
Pre-Collision system (PCS) .... 231 PCS (Pre-Collision
system) switch...... .............. 234
Warning light......................... 482
M
N
O
P

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

598Alphabetical index
PRIUS c_U
Toyota Safety Sense C ............ 225Automatic High Beam ........... 246
Front sensor.......................... 226
LDA (Lane Departure Alert) ................................... 241
PCS (Pre-Collision system) ........ 231
TRAC......................................... 265
Traction control ....................... 265
Transmission Hybrid transmission .............. 202
If the shift lever cannot
be shifted from P ................ 204
Trip information ....................... 103
Trip meter ................................... 99
Turn signal lights Replacing light bulbs............. 458
Switch ................................... 206
Wattage ................................ 544
USB memory .................... 284, 311
Vanity mirrors .......................... 393
Vehicle data recordings ............ 10
Vehicle identification number ................................... 537
Vehicle stability control .......... 265
VSC ........................................... 265
VSC OFF switch ....................... 266 Warning buzzers
Brake system ....... ................. 480
Electric power steering system .......... ...................... 481
Key reminder ........................ 499
LDA
(Lane Departure Alert) ....... 241
Master warning ..................... 482
Pre-Collision warning............ 482
Seat belt reminder ................ 482
Warning lights
Anti-lock brake system ......... 481
Brake assist system.............. 481
Brake system ....... ................. 480
Electric power steering system .......... ...................... 481
Front passenger occupant
classification system .......... 481
Low brake fluid ..................... 480
Low fuel level ........................ 482
Low tire inflation pressure..... 483
Malfunction indicator lamp .... 481
Master warning light ............. 482
Parking brake ....................... 481
PCS warning light ................. 482
Pretensioners ....................... 481
Seat belt reminder light......... 482
Slip indicator light ................. 482
SRS airbag system ............... 481
Tire pressure ........................ 483
Tire pressure warning system .......... ...................... 483
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