2013 TOYOTA PRIUS PLUS warning

300
2-4. Using other driving systems
PRIUS +_OM_OM47841E_(EE)
PCS (Pre-Crash Safety System)
: If equipped
When the radar sensor detects possibility of a frontal collision, the
pre-crash safety systems such as the brakes and seat belts are auto-
matically engaged to lessen impact to occupants as well as vehicle
damage.
Pre-crash seat belts (front seat belts only)
If the pre-crash sensor detects that a collision is unavoidable, the pre-
crash safety system will retract the seat belt before the collision occurs.
The same will happen if the driver makes an emergency braking or
loses control of the vehicle. (P. 1 1 9 )
However, when the VSC system is disabled, the system will not oper-
ate in the event of skidding.
Pre-crash brake assist
When there is a high possibility of a frontal collision, the system applies
greater braking force in relation to how strongly the brake pedal is
depressed.
Pre-crash braking
When there is a high possibility of a frontal collision, the system warns
the driver using a warning light, warning display and buzzer. If the sys-
tem determines that a collision is unavoidable, the brakes are automat-
ically applied to reduce the collision speed. Pre-crash braking can be
disabled using the pre-crash braking off switch.

301 2-4. Using other driving systems
2
When driving
PRIUS +_OM_OM47841E_(EE)
Disabling pre-crash braking
Pre-crash braking enabled
Pre-crash braking disabled
The “PCS” warning light will
turn on when pre-crash brak-
ing is disabled.
Radar sensor
The radar sensor detects vehi-
cles or other obstacles on or
near the road ahead and deter-
mines whether a collision is
imminent based on the position,
speed, and heading of the obsta-
cles.

304 2-4. Using other driving systems
PRIUS +_OM_OM47841E_(EE)
Situations in which the pre-crash safety system does not function
properly
The system may not function effectively in situations such as the following:
On roads with sharp bends or uneven surfaces
If a vehicle suddenly moves in front of your vehicle, such as at an inter-
section
If a vehicle suddenly cuts in front of your vehicle, such as when overtak-
ing
In inclement weather such as heavy rain, fog, snow or sand storms
When your vehicle is skidding with the VSC system off
When an extreme change in vehicle height occurs
When the axis of the radar is out of adjustment
Automatic cancelation of the pre-crash safety system
When a malfunction occurs due to sensor contamination, etc. that results in
the sensors being unable to detect obstacles, the pre-crash safety system
will be automatically disabled. In this case, the system will not activate even
if there is a collision possibility.
When there is a malfunction in the system, or if the system is tempo-
rarily unusable
Warning lights will turn on or flash. (P. 466, 470)

5When trouble arises
453
PRIUS +_OM_OM47841E_(EE)
5-1. Essential information
Emergency flashers .......... 454
If your vehicle needs to
be towed ......................... 455
If you think something is
wrong .............................. 462
5-2. Steps to take in an
emergency
If a warning light turns on
or a warning buzzer
sounds ............................ 463
If you have a flat tire
(vehicles with spare
tire) ................................. 476
If you have a flat tire
(vehicles without a
spare tire) ....................... 488
If the hybrid system
will not start..................... 510
If you lose your keys ......... 512
If the electronic key does
not operate properly ....... 513
If the 12-volt battery is
discharged ...................... 516
If your vehicle
overheats ........................ 522
If the vehicle becomes
stuck ............................... 528
If your vehicle has to
be stopped in an
emergency ...................... 530

462
5-1. Essential information
PRIUS +_OM_OM47841E_(EE)
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional as
soon as possible.
Visible symptoms
Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
Flat-looking tires or uneven tire wear
High engine coolant temperature warning light flashes or
comes on
Audible symptoms
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the hybrid system
Operational symptoms
Engine missing, stumbling or running roughly
Appreciable loss of power
Vehicle pulls heavily to one side when braking
Vehicle pulls heavily to one side when driving on a level road
Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor

5
463
When trouble arises
PRIUS +_OM_OM47841E_(EE)
5-2. Steps to take in an emergency
If a warning light tur ns on or a warning buzzer sounds
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.
The following warning indicates a possible problem in the brake sys-
tem. Immediately stop the vehicle in a safe place and contact any
authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
*1: Brake system warning buzzer:
When there is a possible problem that could affect braking performance, the
warning light will come on and a warning buzzer will sound.
*2: Parking brake engaged warning buzzer:
A buzzer will sound if the vehicle is driven at a speed of approximately 5 km/h
(3 mph) or more.
Warning lightWarning light/Details
Brake system warning light and warning buzzer (red
indicator)
*1, 2
• Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is
fully released, the system is operating normally.
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then goes
off, this does not necessarily indicate a malfunction in the system.
However, if this continues to occur, have the vehicle inspected by
any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.

464 5-2. Steps to take in an emergency
PRIUS +_OM_OM47841E_(EE)
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 any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low
High coolant temperature warning light
Indicates that the coolant temperature is too high
Changes from a flashing to a solid light when the engine
coolant temperature increases.
Hybrid system warning light (warning buzzer)
Indicates a malfunction in the hybrid system

5
465 5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47841E_(EE)
Have the vehicle inspected by any authorized Toyota dealer or repairer,
or another duly qualified and equipped professional 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 any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional immedi-
ately.
Warning lightWarning light/Details
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 seat belt pretensioner system
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
Electric power steering system warning light (warn-
ing buzzer)
Indicates a malfunction in the EPS system