2013 TOYOTA PRIUS malfunction

5
When trouble arises
545
5-2. Steps to take in an emergency
PRIUS_OM_OM47791U_(U)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following a nd perform the appropriate proce-
dure:
■ The hybrid system will not start even though the correct
starting procedure is being followed ( P. 194)
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly.
*
(  P. 548)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● There may be a malfunction in the immobilizer system.
*
(  P. 138)
● There may be a malfunction in the P position control system.
*
( P. 199, 515)
*: It may not be possible to shift the shift position from P to other posi-
tion.
■ The interior lights and headlight s are dim, or the horn does
not sound or sounds at a low volume
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 550)
● The 12-volt battery terminal c onnections may be loose or cor-
roded.

546 5-2. Steps to take in an emergency
PRIUS_OM_OM47791U_(U)
Emergency start functionWhen the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the
“POWER” switch is functioning normally: Set the parking brake.
Turn the “POWER” switch to ACCESSORY mode.
Press and hold the “POWER” switch for about 15 seconds
while depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer.
■ The interior lights and headlights do not turn on, or the horn
does not sound
One of the following may be the cause of the problem:
●One or both of the 12-volt ba ttery terminals may be discon-
nected.
● The 12-volt battery may be discharged. ( P. 550)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3

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)

580 6-1. Specifications
PRIUS_OM_OM47791U_(U)
NOTICE
■Notice on fuel quality
● Do not use improper fuels. If improper fuels are used, the engine will be
damaged.
● Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic
converters causing the emission control system to malfunction.
● Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performance
problems.
● Using unleaded gasoline with an octane number or rating lower than the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■ Fuel-related p oor driveability
If poor driveability is encountered after using a different type of fuel (poor hot
starting, vaporization, engine knocking, etc.), discontinue the use of that type
of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.

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

637
What to do if...
PRIUS_OM_OM47791U_(U)
P. 503P. 504
P. 502P. 505
P. 504
P. 504
P. 504
*: The light flashes to indicate a malfunction.
Radar cruise control
indicator light
*
Driver’s belt reminder
light
LKA (Lane-Keeping
Assist) indicator light
Tire pressure warning
light
Open door warning light
Low fuel level warning
light
Front passenger’s seat
belt reminder light