2012 TOYOTA PRIUS C engine

432 5-2. Steps to take in an emergency
Stop the vehicle immediately.The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
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
Charging system warning light Indicates a malfunction in the vehicle's charging sys-
tem
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

5
When trouble arises
435
5-2. Steps to take in an emergency
*: Driver's and front passen
ger's seat belt buzzer:
The driver's and front passenger's seat belt buzzer sounds to alert the driver
and front passenger that his or her seat belt is not fastened. Once the engine
switch is turned to the “ON” or “START” position (vehicles without a smart
key system) or the “POWER” switch is turned to ON mode (vehicles with a
smart key system), the buzzer sounds for 6 seconds. If the vehicle reaches a
speed of 12 mph (20 km/h), the buzzer sounds once. If the seat belt is still
unfastened after 30 seconds, the buzzer will sound intermittently for 10 sec-
onds. Then, if the seat belt is still unfastened, the buzzer will sound in a dif-
ferent tone for 20 more seconds.
■ SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors, driver's seat belt buckle switch, front passen-
ger occupant classification system (ECU and sensors), “AIR BAG ON” indi-
cator light, “AIR BAG OFF” indicator light, front passenger's seat belt buckle
switch, seat belt pretensioner assemblies, airbags, interconnecting wiring
and power sources. ( P. 432)
■ Front passenger detection sensor, passenger seat belt reminder and
warning buzzer
● If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash and the warning
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 passen-
ger, 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 voltage tempo-
rarily drops, the electric power st eering system warning light may come on
and the warning buzzer may sound.

5
When trouble arises
437
5-2. Steps to take in an emergency
■If the tire pressure warning system is not functioning
The tire pressure warning system will be disabled in the following condi-
tions:
(When the condition be
comes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmit-
ters are used
●If the ID code on the tire pressure warning valves and transmitters is
not registered in the tire pressure warning computer
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or
higher
The tire pressure warning system may be disabled in the following condi-
tions:
(When the condition be comes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies
are nearby
●If a radio set at a similar frequency is in use in the vehicle
●If a window tint that affects the radio wave signals is installed
●If there is a lot of snow or ice on the vehicle, particularly around the
wheels or wheel housings
●If non-genuine Toyota wheels are used (Even if you use Toyota
wheels, the tire pressure warning system may not work properly with
some types of tires.)
●If tire chains are used
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is tu rned to the “ON” position (vehicles
without a smart key system) or the “POWER” switch is turned to ON
mode (vehicles with a smart key syst em), have it checked by your
Toyota dealer.
■ Customization that can be co nfigured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. (Cus-
tomizable features P. 516) However, Toyota recommends that the seat
belt reminder buzzer be operational to alert the driver and front passenger
when seat belts are not fastened.

442 5-2. Steps to take in an emergency
Stop the vehicle immediately.The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Warning messageDetails
Indicates a malfunction in the hybrid system
A buzzer sounds in accordance with the warning
message that is displayed.
Indicates that the high engine coolant tempera-
ture is too high
Indicates abnormal engine oil pressure
A buzzer also sounds.
The warning message is shown if the engine oil
pressure is too low.

5
When trouble arises
447
5-2. Steps to take in an emergency
(Flashes)
Indicates that the
hybrid battery (trac-
tion 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.
(Flashes) 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.
(Flashes) Indicates that the
accelerator pedal is
depressed while the
shift position is in N
A buzzer also sounds. Release the accelera-
tor pedal and shift the
shift lever to D, B or R.
(Flashes) Indicates that the
engine switch is
turned to the “ACC”
or “LOCK” position
(vehicles without a
smart key system) or
the “POWER” switch
is turned to ACCES-
SORY 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 messageDetailsCorrection procedure

454 5-2. Steps to take in an emergency
Once(Flashes)• The electronic
key could not be
detected when
the “POWER”
switch was
pressed after
the doors were
unlocked with
the mechanical
key.
• The electronic key could not be
detected two
consecutive
times when the
“POWER”
switch was
pressed. Touch the elec-
tronic key to the
“POWER”
switch while
depressing the
brake pedal.
Once
(Flashes)An attempt was
made to start
the hybrid sys-
tem with the
shift lever in a
position other
than P.
Shift the shift
lever to P and
start the hybrid
system.
 Power was
turned off due to
the automatic
power off func-
tion.Next time when
starting the
hybrid system,
increase the
engine speed
slightly and
maintain that
level for approx-
imately 5 min-
utes to recharge
the 12-volt-bat-
tery.
Interior
buzzerExterior buzzerWarning messageDetailsCorrection procedure

5
When trouble arises
471
5-2. Steps to take in an emergency
If the shift lever cannot be shifted from P
If the shift lever cannot be shifted with your foot on the brake pedal,
there may be a problem with the shift lock system (a system to pre-
vent accidental operation of the shift lever). Have the vehicle
inspected by your Toyo ta dealer immediately.
The following steps may be used as an emergency measure to
ensure that the shift lever can be shifted:
Set the parking brake.
Vehicles without a smart key system
Turn the engine switch to the “ACC” position.
Vehicles with a smart key system
Turn the “POWER” switch to ACCESSORY mode.
Depress the brake pedal.
Pry the cover up with a flat-
head screwdriver or equiva-
lent tool.
To prevent damage to the
cover, cover the tip of the
screwdriver with a rag.
Press the shift lock override
button.
The shift lever can be shifted
while the button is pressed.
STEP1
STEP2
STEP3
STEP4
STEP5

476 5-2. Steps to take in an emergency
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain that level for approximately 5
minutes to recharge the 12-volt battery of your vehicle.
Vehicles with a smart key system only: Open and close any
of the doors of your vehicle with the “POWER” switch off.
Vehicles without a smart key system
Maintain the engine speed of the second vehicle and start
the hybrid system of your vehicle by turning the engine
switch to the “ON” position.
Vehicles with a smart key system
Maintain the engine speed of the second vehicle and start
the hybrid system of your ve hicle by turning the “POWER”
switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator
does not come on, contact your Toyota dealer.
Once the hybrid system has started, remove the jumper
cables in the exact reverse or der from which they were con-
nected.
Once the hybrid system starts, ha ve the vehicle inspected at your
Toyota dealer as soon as possible.STEP3
STEP4
STEP5
STEP6
STEP7