stop start TOYOTA PRIUS 2012 3.G Owner's Manual

When trouble arises5
483
5-1. Essential informationEmergency flashers ......... 484
If your vehicle needs to be towed ........................ 485
If you think something is wrong ......................... 492
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds ........................... 493
If a warning message is displayed .................... 507
If you have a flat tire......... 523
If the hybrid system will not start .......................... 538
If you lose your keys ........ 540
If the electronic key does not operate properly....... 541
If the 12-volt battery is discharged ..................... 543
If your vehicle overheats ....................... 549
If the vehicle becomes stuck .............................. 554
If your vehicle has to be stopped in an
emergency ..................... 556

5
When trouble arises
505
5-2. Steps to take in an emergency
CAUTION
As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS-ti re pressure warning system) that
illuminates a low tire pressure telltal e (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Accordingly,
when the low tire pressure telltale (tire pre ssure warning light) illumi-
nates, you should stop and check your tires as soon as possible, and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi ciency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-
stitute for proper tire ma intenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-inflation has not reached the
level to trigger illu mination of the TPMS low tire pressure telltale (tire
pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning
system) malfunction indicator to indi cate when the system is not operat-
ing properly. The TPMS (tire pressure warning system) malfunction indi-
cator is combined with the low tire pressure telltale (tire pressure
warning light). When the system det ects a malfunction, the telltale will
flash for approximately one minute an d then remain continuously illumi-
nated. This sequence will continue upon subsequent vehicle start-ups as
long as the malfunction exists. When the malfunction indi cator is illumi-
nated, the system may not be able to detect or signal low tire pressure
as intended.

514 5-2. Steps to take in an emergency
Warning messageDetailsCorrection procedure
(If equipped) Indicates that the LKA is not
currently functional. Restart the LKA.
In case of over-
heating, the system
will become func-
tional once the sys-
tem cools down.
Alerts the driver that the vehi-
cle is out of the lanes (while
the LKA system is operating). A buzzer also sounds. The
lane markings and/or the
steering wheel marking flash.
At the same time,
will appear on the
head-up display (the image
flashes). Check around the
vehicle and back to
inside of the lane
markings.
The hybrid system has over-
heated. A buzzer also sounds.
This message may be dis-
played when driving under
severe operating conditions.
(For example, when driving
up a long steep hill.) Stop and check.
(
P. 549)
(Flashes) The hybrid battery (traction
battery) is low.
A buzzer also sounds. When stopping the
vehicle for a long
period of time, shift
the shift position to
P. The hybrid bat-
tery (traction bat-
tery) cannot be
charged with the
shift position in N.

542 5-2. Steps to take in an emergency
Changing “POWER” switch modes and starting the hybrid
systemDepress 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.
Perform the following operations.
To change “POWER” switch modes: Within 10 seconds of the
buzzer sounding, release the brake pedal and press the
“POWER” switch. Modes can be changed each time the
switch is pressed. ( P. 194)
To start the hybrid system: Press the “POWER” switch within
10 seconds of the buzzer soun ding, 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. 454)
STEP 3

5
When trouble arises
549
5-2. Steps to take in an emergency
If your vehicle overheats
Correction procedures■ If the high coolant temperature warning light flashes or comes
on
Stop the vehicle in a safe place and turn off the air condition-
ing system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the hybrid system. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
If you do not see steam: Leave the hybrid system operating and carefully lift the
hood.
The following may indicate that your vehicle is overheating:
●The high coolant temperature warn ing light flashes or comes on:
The engine may be overheating.
● “HYBRID SYSTEM OVERHEAT” is shown on the multi-informa-
tion display:
The power control unit may be overheating.
Follow the correction procedure as described below.
STEP 1
STEP 2

554
5-2. Steps to take in an emergency
If the vehicle becomes stuck
CAUTION
■When attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, make sure the sur-
rounding area is clear to avoid striking other vehicles, objects or people. The
vehicle may also lunge forward or lunge back suddenly as it becomes free.
Use extreme caution.
■ When changing the shift position
Be careful not to change the shift position with the accelerator pedal
depressed.
Changing the shift position to any positions other than P or N may cause the
vehicle to accelerate abruptly, causing an accident and resulting in death or
serious injury.
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Set the parking brake and shift the shift position to P. Stop
the hybrid system.
Remove the mud, snow or sand from around the stuck tire.
Place wood, stones or some other material under the tires
to help provide traction.
Restart the hybrid system.
Shift the shift position to D or R, release the parking brake
and carefully apply the accelerator to free the vehicle.STEP 1
STEP 2
STEP 3
STEP 4
STEP 5

621
Alphabetical index
Eco drive mode switch ........... 204
Electric power steering........... 296
Electronic key
If the electronic key does not operate properly ................. 541
Replacing battery ................. 454
Emergency, in case of If a warning buzzer
sounds ............................... 493
If a warning light turns on ..... 493
If the electronic key does not operate properly ................. 541
If the hybrid system will not start .................................... 538
If the 12-volt battery is discharged ......................... 543
If you have a flat tire ............ 523
If you lose your keys............. 540
If you think something is wrong ................................. 492
If your vehicle becomes stuck................................... 554
If your vehicle has to be
stopped in an
emergency ......................... 556
If your vehicle needs to be
towed ................................. 485
If your vehicle overheats ...... 549
Emergency flashers
Switch ................................... 484 Engine
Accessory mode....................194
Compartment ........................419
Hood......................................413
How to start the hybrid
system ................................192
Identification number .............561
If the hybrid system will not start .....................................538
Ignition switch........................192
Overheating...........................549
“POWER” switch ...................192
Engine coolant Capacity ................................566
Checking ...............................424
Preparing and checking before winter .......................317
Engine/power control unit coolantCapacity ................................566
Checking ...............................424
Preparing and checking before winter .......................317
Engine oil Capacity ................................563
Checking ...............................420
Preparing and checking before winter .......................317
Enhanced VSC .........................296
EPS ............................................296
EV drive mode switch ..............199
Event data recorder ...................25E