2013 TOYOTA PRIUS C buzzer

436 5-2. Steps to take in an emergency
Seat belt reminder light
(warning buzzer)
*
Warns the driver and front
passenger to fasten their
seat beltFasten 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
reminder light (warning
buzzer) go off.
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. 443
Tire pressure warning light
When the light comes on:
Low tire inflation pres-
sure such as
• Natural causes ( P. 438)
• Flat tire ( P. 459) Adjust the tire inflation
pressure to the speci-
fied level.
The light will turn off
after 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. 439) Have the system
checked by your Toyota
dealer.
Warning lightWarning light/DetailsCorrection procedure

5
When trouble arises
437
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. 434)
■ 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
439
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. 518) However, Toyota recommends that the seat
belt reminder buzzer be operational to alert the driver and front passenger
when seat belts are not fastened.

444 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
445
5-2. Steps to take in an emergency
Have the vehicle inspected immediately.
A buzzer sounds and a warning message is shown on the multi-infor-
mation display. Failure to investig ate the cause of the following warn-
ings may lead to the system operating abnormally and possibly
cause an accident. Have the vehicle inspected by your Toyota dealer
immediately.
Warning messageDetails
(Flashes)
(If equipped) •
Indicates a malfunction in the smart key system
• Indicates a malfunction in the steering lock sys-
tem
A buzzer also sounds.
(If equipped) Indicates a malfunction in the cruise control
system
A buzzer also sounds.

446 5-2. Steps to take in an emergency
Follow the correction procedures.A buzzer sounds and a warning message is shown on the multi-infor-
mation display. After taking the s pecified steps to correct the sus-
pected problem, check that the warning message goes off.
Warning messageDetailsCorrection procedure
Indicates that one or
more of the side
doors is not fully
closed The system also indi-
cates which doors are
not fully closed.
If the vehicle reaches
a speed of 3 mph (5
km/h), flashes
and a buzzer sounds
to indicate that the
door(s) are not yet
fully closed. Make sure that all the
side doors are closed.
Indicates that the
back door is not fully
closed If the vehicle reaches
a speed of 3 mph (5
km/h), flashes
and a buzzer sounds
to indicate that the
back door is not yet
fully closed. Close the back door.

5
When trouble arises
447
5-2. Steps to take in an emergency
(Flashes)
(If equipped) Indicates that the
moon roof is not fully
closed (with the
“POWER” switch off
and the driver's door
is open)
A buzzer also sounds. Close the moon roof.
(U.S.A.)
(Canada) (red) Indicates that the
parking brake is still
engaged
If the vehicle reaches
a speed of 3 mph (5
km/h), flashes
and a buzzer sounds
to indicate that the
parking brake is still
engaged. Release the parking
brake.
(U.S.A. only) Indicates that all
maintenance accord-
ing to the driven dis-
tance on the
maintenance sched-
ule
*1 should be per-
formed soon If necessary, perform
maintenance.
Comes on approxi-
mately 4500 miles
(7200 km) after the
maintenance data has
been reset
Warning messageDetailsCorrection procedure

448 5-2. Steps to take in an emergency
(U.S.A. only)Indicates that all
maintenance is
required to corre-
spond to the driven
distance on the main-
tenance schedule
*1Perform the necessary
maintenance.
Please reset the main-
tenance data after the
maintenance is per-
formed.(
P. 351)
Comes on approxi-
mately 5000 miles
(8000 km) after the
maintenance data has
been reset
(The indicator will not
work properly unless
the maintenance data
has been reset)
Indicates that the
hybrid system has
overheated
A buzzer also sounds.
This message may be
displayed when driv-
ing under severe oper-
ating conditions. (For
example, when driv-
ing up a long steep
hill.) Stop and check.
(
P. 482)
(Flashes) Indicates that the
hybrid battery (trac-
tion 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 messageDetailsCorrection procedure