2017 TOYOTA PRIUS warning lights

632
PRIUS_OM_OM47B54U_(U)
7-3. Do-it-yourself maintenance
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. ( →P. 635)
● 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 from damage.
■ When replacing light bulbs
Toyota recommends that you use genuine Toyota products designed for this
vehicle. Because certain bulbs are connected to circuits designed to prevent
overload, nongenuine parts or parts not designed for this vehicle may be
unusable.
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 indicated, 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.
NOTICE
■ Before replacing fuses
Have the cause of electrical overload determined and repaired by your
Toyota dealer as soon as possible.

642
PRIUS_OM_OM47B54U_(U)
7-3. Do-it-yourself maintenance
WARNING
■Replacing light bulbs
● Be sure to stop the hybrid system and turn off the lights. Do not attempt to
replace the bulb immediately 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 clean 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. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
● Do not attempt to repair or disassemble light bulbs, connectors, electric
circuits or component parts.
Doing so may result in death or serious injury due to electric shock.
■ To prevent damage or fire
● Make sure bulbs are fully seated and locked.
● Check the wattage of the bulb before installing to prevent heat damage.

653
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light and warning buzzer (red
indicator)
*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Brake system warning light (yellow indicator)
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
→ Have the vehicle inspected by your Toyota dealer
immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Low engine oil pressure warning light
(warning buzzer)
*2
Indicates that the engine oil pressure is too low
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system; or
• The electronic throttle control system
→ Have the vehicle inspected by your Toyota dealer
immediately.

6568-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
Seat belt reminder light (warning buzzer)*4
Warns the driver and/or front passenger to fasten their
seat belts
→ Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.
Rear passengers’ seat belt reminder lights (warning
buzzer) (U.S.A. only)
*5
Warns the rear passengers to fasten their seat belts
→ Fasten the seat belt.
Master warning light
A buzzer sounds and the warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.
→ P. 663
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( →P. 659)
• Flat tire ( →P. 670, 684)
→ 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. 659)
→ Have the system checked by your Toyota dealer.
Brake Override System /Drive-Start Control/
Intelligent Clearance Sonar (symbol display)
*6
Indicates that:
• The Brake Override System is operating;
• The Brake Override System is malfunctioning;
• The Drive-Start Control is operating;
• The Drive-Start Control is malfunctioning; or
• The Intelligent Clearance Sonar (if equipped) is operat-
ing ( →P. 350)
→ Follow the instruction that are displayed on the multi-
information display.
Warning lightWarning light/Details/Actions

6648-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
The warning lights and warning buzzers operate as follows depending
on the content of the message. If a message indicates the need for
inspection by a dealer, have the vehicle inspected by your Toyota
dealer immediately.
The operation of the warning lights and warning buzzers may differ
from those state. In this case, perform the correction procedure
according to the displayed message.
*: A buzzer sounds the first time a message is shown on the multi-informa- tion display.
Messages and warnings
System
warning lightWarning
buzzer
*Warning
Comes on⎯Sounds
Indicates an important situation, such
as when a system related to driving is
malfunctioning or that danger may
result if the correction procedure is not
performed
⎯Comes on or flashesSounds
Indicates an important situation, such
as when the systems shown on the
multi-information display may be mal-
functioning
Flashes⎯Sounds
Indicates a situation, such as when
damage to the vehicle or danger may
result
Comes on⎯Does not sound
Indicates a condition, such as mal-
function of electrical components, their
condition, or indicates the need for
maintenance
Flashes⎯Does not
sound
Indicates a situation, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly

6658-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along with a message
shown on the multi-information display.
●“Antilock Brake System Malfunction Visit Your Dealer”:
The ABS warning light comes on. ( →P. 654)
● “Braking Power Low Visit Your Dealer”:
The brake system warning light (yellow) will come on. ( →P. 653)
● Indicates that a door is not fully closed while the vehicle is stopped.:
The Open door warning light comes on. ( →P. 655)
■ If “Visit Your Dealer” is shown
The system or part shown on the multi-information display is malfunctioning.
Have the vehicle inspected by your Toyota dealer.
■ If a message about an operation is shown
●If a message about an operation of the accelerator pedal or brake pedal is
shown
A warning message about an operation of the brake pedal may be shown
while the driving assist systems such as PCS (Pre-Collision System) (if
equipped) or the dynamic radar cruise control with full-speed range (if
equipped) is operating. If a warning message is shown, be sure to deceler-
ate the vehicle or follow an instruction shown on the multi-information dis-
play.
● A warning message is shown when Drive-Start Control, Brake Override Sys-
tem or Intelligent Clearance Sonar (if equipped) operates ( →P. 209, 210,
350). Follow the instructions on the multi-information display.
● If a message about an operation of the power switch is shown
An instruction for operation of the power switch is shown when the incorrect
procedure for starting the hybrid system is performed or the power switch is
operated incorrectly. Follow the instructions shown on the multi-information
display to operate the power switch again.
● If a message about a shift operation is shown
To prevent the shift position from being selected incorrectly or the vehicle
from moving unexpectedly, the shift position may be changed automatically
(→P. 236) or operating the shift lever or P position switch may be required.
In this case, change the shift position following the instructions on the multi-
information display.
● If a message or image about an open/close state of a part or replenishment
of a consumable is shown
Confirm the part indicated by the multi-information display or a warning light,
and then perform the coping method such as closing the open door or
replenishing a consumable.

779Alphabetical index
PRIUS_OM_OM47B54U_(U)
AntennaRadio .................................... 437
Smart key system ................. 176
Anti-lock brake system (ABS) ...................................... 402
Function ................................ 402
Warning light ......................... 654
Approach warning ................... 307
Armrest ..................................... 550
Assist grips .............................. 551
Audio input............................... 423
Audio system
(Entune Audio) ...................... 419 Antenna ................................ 437
Audio input ............................ 423
AUX port ............................... 454
Basic operations ................... 424
Bluetooth
® audio................... 466
CD player .............................. 438
iPod....................................... 444
MP3/WMA disc ..................... 438
Optimal use........................... 435
Portable music player ........... 423
Radio .................................... 436
Steering wheel audio switches.............................. 422
USB memory ........................ 449
Audio system (Entune Premium Audio with Navigation)
*
Automatic air conditioning system Air conditioning filter ............. 620
Automatic air conditioning system ......... ....................... 510
Climate control ...................... 514
Eco score (A/C score)........... 136
Fresh air intake system......... 514
Humidity sensor .................... 517
Settings screen ..................... 513
S-FLOW mode ...................... 512 Automatic door locking
and unlocking systems ........ 168
Automatic High Beam ............. 247
Automatic light control system.................................... 245
AUX port ................................... 423
Auxiliary boxes ........................ 530
Back door ................................. 171
Back-up lights Replacing light bulbs ............ 638
Wattage ................................ 732
Battery (12-volt battery)
Battery checking ................... 597
If the 12-volt battery is discharged.......................... 708
Preparing and checking before winter ...................... 412
Warning light......................... 653
Battery (traction battery) .......... 82
Blind Spot Monitor (BSM) ....... 320
Bluetooth
®............................... 497
Audio system .................. ...... 466
Hands-free system (for cellular phone) ............. 468
Registering/removing
a Bluetooth
® device ........... 460
Selecting a Bluetooth®
device ................................. 462
Wireless communication....... 455
B
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

781Alphabetical index
PRIUS_OM_OM47B54U_(U)
Child-protectors....................... 168
CleaningAluminum wheels.................. 567
Camera sensor ..................... 271
Exterior ................................. 566
Interior................................... 572
Radar sensor ........................ 270
Seat belts .............................. 574
Water-repellent coating......... 567
Coat hooks ............................... 550
Combination meter .................... 92 Clock adjustment .................... 97
Main display .......................... 107
Multi-information display ....... 114
Warning lights and indicators ............................ 100
Condenser ................................ 596
Console box ............................. 527
Coolant Capacity ................................ 728
Checking ............................... 594
Preparing and checking before winter....................... 412
Cooling system ........................ 594 Hybrid system overheating......................... 714
Consumption screen ............... 153
Cruise control
Cruise control........................ 313
Dynamic radar cruise control with full-speed
range .................................. 298
Cup holders.............................. 528
Curtain shield airbags ............... 36
Customizable features ............ 748 Daytime running light
system.................................... 245
Deck board ............................... 531
Defogger Outside rear view mirrors ..... 515
Rear window ......................... 515
Windshield ............................ 515
Dimension ................................ 722
Dinghy towing.......................... 224
Display BSM (Blind Spot Monitor) ..... 320
Drive information .................. 116
Dynamic radar cruise control with full-speed range .......... 298
Energy monitor ............. 117, 153
Head-up display.................... 146
LDA (Lane Departure Alert with steering control) .......... 292
Multi-information display ....... 114
Parking assist system ....... ................. 334, 361
Pre-collision warning ............ 275
Trip information..................... 109
Warning messages ............... 663
Do-it-yourself maintenance .... 584
Door courtesy lights ............... 523 Location ................................ 523
Wattage ................................ 732D