2013 TOYOTA PRIUS malfunction indicator light

5
When trouble arises
501
5-2. Steps to take in an emergency
PRIUS_OM_OM47791U_(U)
Have the vehicle inspected by your Toyota dealer immediately.
Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
(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
SRS warning light Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
Electric power steering syst em warning light (warn-
ing buzzer) Indicates a malfunction in the EPS system

502 5-2. Steps to take in an emergency
PRIUS_OM_OM47791U_(U)
Warning lightWarning light/Details
(Flashes)
(If equipped) Pre-collision system warning light
Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the
system is not malfunctioning:
• The light will flash quickly when the system is operating. (P. 307)
• The light will turn on when the pre-collision braking is disabled. ( P. 308)
• The light will turn on when the system cannot tempo- rarily be used. ( P. 518)
(Turns on) Slip indicator light
Indicates a malfunction in:
•VSC;
• TRAC; or
• Hill-start assist control
Flashes when the above systems and/or ABS are oper-
ating.
(P. 301)
Brake system warning light (yellow indicator) Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
(Flashes)
(If equipped) LKA (Lane-Keeping Assist) indicator light
Indicates a malfunction in the LKA (Lane-Keeping
Assist). ( P. 289)

5
When trouble arises
503
5-2. Steps to take in an emergency
PRIUS_OM_OM47791U_(U)
Warning lightWarning light/Details
(If equipped) Automatic headlight level
ing system warning light
Indicates a malfunction in the automatic headlight level-
ing system
(Flashes)
(If equipped) Cruise control indicator
Indicates a malfunction in the cruise control/dynamic
radar cruise control
(Flashes)
(If equipped) Radar cruise control indicator
Indicates a malfunction in the dynamic radar cruise con-
trol

5
When trouble arises
507
5-2. Steps to take in an emergency
PRIUS_OM_OM47791U_(U)
■
Electric power steering system wa rning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage 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 cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after several driving trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact 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.
Pushing the tire pressure warning re set switch will not turn off the tire
pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such
as natural air leaks and tire inflat ion pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning
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 spare
tire. Replace the spare tire with the re paired tire and adjust the tire infla-
tion pressure. The tire pressure wa rning light will go off after a few min-
utes.

5
When trouble arises
511
5-2. Steps to take in an emergency
PRIUS_OM_OM47791U_(U)
CAUTION
As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS-ti re pressure warning system) that
illuminates a low tire pressure telltal e (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Accordingly,
when the low tire pressure telltale (tire pre ssure warning light) illumi-
nates, you should stop and check your tires as soon as possible, and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi ciency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-
stitute for proper tire ma intenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-inflation has not reached the
level to trigger illu mination of the TPMS low tire pressure telltale (tire
pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning
system) malfunction indicator to indi cate when the system is not operat-
ing properly. The TPMS (tire pressure warning system) malfunction indi-
cator is combined with the low tire pressure telltale (tire pressure
warning light). When the system det ects a malfunction, the telltale will
flash for approximately one minute an d then remain continuously illumi-
nated. This sequence will continue upon subsequent vehicle start-ups as
long as the malfunction exists. When the malfunction indi cator is illumi-
nated, the system may not be able to detect or signal low tire pressure
as intended.

579
6-1. Specifications
6
Vehicle specifications
PRIUS_OM_OM47791U_(U)
■
Non-recommendation of the use of blended gasoline
● If you use gasohol in your vehicle, be sure that it has an octane rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methanol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methyl-
cyclopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adversely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If
this happens, contact your Toyota dealer for service.
■ If your engine knocks
● Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time while acceler-
ating or driving uphill. This is normal and there is no need for concern.
●Use only gasoline containing a maxi-
mum of 10% ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 10% etha-
nol, including from any pump labeled
E15, E30, E50, E85 (which are only
some examples of fuel containing more
than 10% ethanol).DO NOT use gasoline
containing more than
10% ethanol.
(15% ethanol)
(50% ethanol)
(85% ethanol)

633
Alphabetical index
PRIUS_OM_OM47791U_(U)
Tonneau cover......................... 382
Tools......................................... 530
Touch tracer display ............... 217
Total load capacity .................. 320
Towing
Dinghy towing ....................... 327
Emergency towing ................ 492
Trailer towing ........................ 326
TRAC ........................................ 300
Traction control ....................... 300
Trailer towing........................... 326
Transmission
Hybrid transmission .............. 204
P position switch................... 207
Trip information....................... 231
Trip meter................................. 216
Turn signal lights Replacing light bulbs ............ 473
Switch ................................... 213
Wattage ................................ 576
USB port
*................................ 356
Vanity lights Vanity lights .......................... 369
Wattage ................................ 576
Vanity mirrors .......................... 369
Vehicle data recordings............ 24
Vehicle identification number................................... 567
Vehicle proximity notification system ..................................... 34
Vehicle stability control .......... 300
VSC ........................................... 300 Warning buzzers
Brake system ........................499
Open door ............................504
Seat belt reminder .................504
Warning lights Anti-lock brake system
(ABS) ..................................501
Automatic headlight leveling system ................................503
Brake system ................499, 502
Charging system .... ...............500
Cruise control ........................503
Electric power steering
system ................................501
High coolant temperature ......500
Hybrid system .......................501
Low fuel level ........................504
Low tire pressure...................505
Malfunction indicator lamp ....501
Open door .............................504
Pre-collision system ..............502
Radar cruise control. .............503
Seat belt warning light ...........504
Slip indicator..........................502
SRS airbags ..........................501
Tire pressure warning light ....505U
V
W
GW Refer to

636 What to do if...
PRIUS_OM_OM47791U_(U)
■Warning lights
P. 505
or
P. 501
or
P. 499P. 501
P. 500P. 502
P. 500P. 502
P. 502
or
P. 501P. 503
P. 501P. 503
Master warning light ABS warning light
Brake system warning
light (red indicatorF
Electric power steering
system warning light
Charging system
warning lightPre-collision system
warning light
G
High coolant
temperature warning
lightSlip indicator light
Brake system warning
light (yellow indicator)Malfunction indicator
lamp
Automatic headlight
leveling system
warning light
SRS warning lightCruise control indicator
light
G