2013 TOYOTA PRIUS ECO mode

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When trouble arises
509
5-2. Steps to take in an emergency
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■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 “POWER” switch
is turned to ON mode, have it
checked by your Toyota dealer.
■ Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features  P. 596) However, Toyota recommends that the
seat belt reminder buzzer be operational to alert the driver and front passen-
ger when seat belts are not fastened.
CAUTION
■ If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Toyota
dealer. The vehicle will become extremely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
■ When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.

518 5-2. Steps to take in an emergency
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Warning messageDetailsCorrection procedure
(If equipped) • Indicates that the pre-collision
system is not currently func-
tional because the grille or the
sensor is dirty.
• This message also appears when the pre-collision system
is not functional due to over-
heating. • Check the grille
and the sensor and
clean them if they
are dirty.
• In case of over- heating, the system
will become func-
tional once the sys-
tem cools down.
(Flashes)
(If equipped) Indicates that the radar cruise
control sensor is dirty or cov-
ered with ice.
Clean the sensor.
(Flashes)
(If equipped) Indicates that the radar cruise
control system is unable to
judge vehicle-to-vehicle dis-
tance.
If the windshield
wipers are on, turn
them off or set
them to either the
intermittent or the
slow mode.

522 5-2. Steps to take in an emergency
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Warning messageDetailsCorrection procedure
(Flashes) The accelerator pedal is
depressed to stop the vehicle
on an upward slope etc.
A buzzer also sounds.
If this continues, the hybrid
system may overheat. Release the accel-
erator pedal and
depress the brake
pedal.
EV drive mode cannot be
switched to. A buzzer also sounds.
The reason why EV drive
mode cannot be used is
shown (may not be shown in
some instances.) Use the EV drive
mode when it
becomes available.
(Flashes
3times) EV drive mode has been auto-
matically canceled.
A buzzer also sounds.
The reason why EV drive
mode cannot be used is
shown (may not be shown in
some instances.) Drive normally for a
short time.

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When trouble arises
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5-2. Steps to take in an emergency
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■
Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if
vehicle-to-vehicle distance decreases:
● When your vehicle and the vehicle ahead are traveling at the same
speed or the vehicle ahead is traveling more quickly than your vehicle.
● When the vehicle ahead is traveling at very low speed.
● Immediately after cruise control speed is set.
● At the instant the accelerator pedal is depressed.
■ The LKA (Lane-Keeping Assist) lane departure warning function (if
equipped)
In the following cases, the warning message will not be displayed even if a
lane line is crossed.
● When the vehicle speed deviates from the operating range of the LKA
system functions
● When the lane lines cannot be recognized
● When the steering wheel is turned as far as necessary to cause the vehi-
cle to change lanes

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Have the malfunction repaired immediately.After taking the specified steps to correct the suspected problem,
check that the warning message and light turn off.
Interior buzzerExterior buzzerWarning messageDetailsCorrection procedure
Once 
(Comes on for 15 seconds.)
(Flashes) The electronic
key is not
detected when
attempting to
start the hybrid
system.
Confirm
the loca-
tion of the
electronic
key.
Once 3 times (Flashes)An open door
other than the
driver’s door is
closed while the
electronic key is
outside the
detection range
and the
“POWER”
switch is in
ACCESSORY
or ON mode.
Confirm
the loca-
tion of the
electronic
key.

528 5-2. Steps to take in an emergency
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InteriorbuzzerExterior buzzerWarning messageDetailsCorrection procedure
Contin-
uous Contin-
uous
(Displayed alternately) (Flashes) The driver’s
door is opened
and closed
while the elec-
tronic key is out-
side the
detection range
and the
“POWER”
switch is in
ACCESSORY
or ON mode
with the shift
position not in P.
• Shift the
shift posi-
tion to P.
• Confirm the loca-
tion of the
electronic
key.
Once 
(Comes on for 15 seconds.)
The electronic
key battery is
low. Replace
the bat-
tery.
(
P. 460)
Once 
(Flashes)An open door
has been
closed and the
“POWER”
switch has been
turned twice to
the ACCES-
SORY mode
from OFF. Press the
“POWER”
switch
while
applying
the
brakes.

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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

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When trouble arises
549
5-2. Steps to take in an emergency
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Starting the hybrid system
Depress the brake pedal. Touch the Toyota emblem side of
the electronic key to the
“POWER” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm
will sound to indicate that the start
function cannot detect the elec-
tronic key.
Press the “POWER” switch within 10 seconds of the buzzer
sounding, keeping the brake pedal depressed.
In the event that the hybrid system still cannot be operated, contact
your Toyota dealer.
STEP 1
STEP 2
■ Stopping the hybrid system
Set the parking brake, shift the shift position to P and press the “POWER”
switch as you normally do when stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 460)
■ Changing “POWER” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and
press the “POWER” switch.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 196)
STEP 3