2012 TOYOTA PRIUS C drive mode

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.

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

448 5-2. Steps to take in an emergency
Indicates that the EV
drive mode is not
available
*2
A buzzer also sounds.
The reason the EV
drive mode is not
available (the vehicle
is idling, battery
charge is low, speed is
higher than the EV
drive mode operating
speed range, acceler-
ator pedal is
depressed too much)
may be displayed.Use the EV drive mode
when it becomes avail-
able.
(Flashes 3
times) Indicates that the EV
drive mode has been
automatically can-
celled
*2
A buzzer also sounds.
The reason the EV
drive mode is not
available (the battery
charge is low, speed is
higher than the EV
drive mode speed
range, accelerator
pedal is depressed too
much) may be dis-
played.
Drive the vehicle for a
while.
*1: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s
Manual Supplement” for the maintena nce interval applicable to your
vehicle.
*2: For the EV drive mode operating conditions: P. 170
Warning messageDetailsCorrection procedure

450 5-2. Steps to take in an emergency
Once3 times
(Flashes)The electronic
key was carried
outside the
vehicle and the
driver’s door
was opened
and closed
while the shift
lever was in P
without turning
off the
“POWER”
switch.
Turn the
“POWER”
switch off or
bring the elec-
tronic key back
into the vehicle.
The electronic
key was carried
outside the
vehicle and a
door other than
the driver's door
was opened
and closed
while the
“POWER”
switch was in a
mode other
than off. Bring the elec-
tronic key back
into the vehicle.
Interior
buzzerExterior buzzerWarning messageDetailsCorrection procedure

5
When trouble arises
455
5-2. Steps to take in an emergency
Once
The electronic
key has a low
battery.Replace the
electronic key
battery.
(
P. 397)
Once
(Flashes)The driver's
door was
opened and
closed with the
“POWER”
switch turned off
and then the
“POWER”
switch was put
in ACCES-
SORY mode
twice without
the hybrid sys-
tem being
started.
Press the
“POWER”
switch while
depressing the
brake pedal.
During a hybrid
system starting
procedure in the
event that the
electronic key
was not func-
tioning properly
( P. 473), the
“POWER”
switch was
touched with
the electronic
key. Press the
“POWER”
switch within 10
seconds of the
buzzer sound-
ing.
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

521
6-2. Customization
6
Vehicle specifications
*1: If equipped
*2: Vehicles without a smart key system
*3: Vehicles with a smart key system
Automatic
air condi-
tioning sys-
tem
(
P. 236)
Air condition-
ing control of
Eco drive mode
On Off — O
ItemFunctionDefault set-
tingCustomizedsetting