warning lights TOYOTA PRIUS PLUS 2012 Owners Manual

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PRIUS +_OM_OM47821E_(EE)
2-1. Driving procedures
Driving the vehicle .............. 202
Power (ignition) switch ........ 214
EV drive mode .................... 221
Hybrid transmission ............ 224
Turn signal lever ................. 233
Parking brake...................... 234
Horn .................................... 235
2-2. Instrument cluster
Gauges and meters ............ 236
Indicators and warning
lights ................................. 248
Head-up display .................. 253
2-3. Operating the lights
and windshield wipers
Headlight switch.................. 261
Fog light switch ................... 266
Windshield wipers
and washer ....................... 268
Rear window wiper
and washer ....................... 272
Headlight cleaner switch ..... 2742-4. Using other driving systems
Cruise control ..................... 275
Dynamic radar cruise
control .............................. 280
Driving assist systems........ 298
Hill-start assist control ........ 304
PCS (Pre-Crash Safety
System) ............................ 307
2-5. Driving information
Cargo and luggage............. 316
Winter driving tips............... 319
Trailer towing...................... 323
2When driving

71 1-3. Opening, closing and locking the doors
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Before driving
PRIUS +_OM_OM47821E_(EE)
Alarms and warning lights
A combination of exterior and interior alarms as well as warning lights are
used to prevent theft of the vehicle and accidents resulting from erroneous
operation. Take appropriate measures depending on which warning light
comes on. (P. 479)
The following table describes circumstances and correction procedures
when only alarms are sounded.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for
5 secondsAn attempt was made to
lock the doors using the
entry function while the
electronic key was still
inside the passenger com-
partment
Retrieve the elec-
tronic key from the
passenger compart-
ment and lock the
doors again An attempt was made to
lock either front door by
opening a door and putting
the inside lock button into
the lock position, then
closing the door by pulling
the outside door handle
with the electronic key still
inside the vehicle
An attempt was made to
lock the vehicle while a
door is openClose all of the doors
and lock the doors
again

2When driving
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PRIUS +_OM_OM47821E_(EE)
2-1. Driving procedures
Driving the vehicle ............ 202
Power (ignition) switch...... 214
EV drive mode .................. 221
Hybrid transmission .......... 224
Turn signal lever ............... 233
Parking brake ................... 234
Horn .................................. 2352-2. Instrument cluster
Gauges and meters .......... 236
Indicators and warning
lights ............................... 248
Head-up display ................ 253
2-3. Operating the lights
and windshield wipers
Headlight switch................ 261
Fog light switch ................. 266
Windshield wipers
and washer ..................... 268
Rear window wiper
and washer ..................... 272
Headlight cleaner switch ... 274
2-4. Using other driving systems
Cruise control.................... 275
Dynamic radar cruise
control ............................. 280
Driving assist systems ...... 298
Hill-start assist control....... 304
PCS (Pre-Crash Safety
System) .......................... 307
2-5. Driving information
Cargo and luggage ........... 316
Winter driving tips ............. 319
Trailer towing .................... 323

247 2-2. Instrument cluster
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When driving
PRIUS +_OM_OM47821E_(EE)
Engine speed
On hybrid vehicles, engine speed is precisely controlled in order to help
improve fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may differ even
when vehicle operation and driving conditions are the same.
Brightness of the instrument cluster light
If the headlight switch is turned to ON while the surrounding area is dark, the
instrument cluster lights will dim.
When disconnecting and reconnecting 12-volt battery terminals
The average fuel consumption and cruising range will be reset.
NOTICE
To prevent damage to the engine and its components
The engine may be overheating if the high coolant temperature warning light
comes on or flashes. In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (P. 528)
The trip information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal
information display. At extremely low temperatures, the information display
monitor may respond slowly, and display changes may be delayed.

248
2-2. Instrument cluster
PRIUS +_OM_OM47821E_(EE)
Indicators and warning lights
The indicator and warning lights on the instrument cluster inform the
driver of the status of the vehicle’s various systems.
Instrument cluster
Some indicators and the units used on the trip information display
etc. may differ depending on the target region.
Instrument panel

250 2-2. Instrument cluster
PRIUS +_OM_OM47821E_(EE)
*1: These lights turn on when the “POWER” switch is turned to the ON
mode to indicate that a system check is being performed. They will
turn off after the hybrid system is on, or after a few seconds. There
may be a malfunction in a system if a light does not come on, or if the
lights do not turn off. Have the vehicle inspected by any authorized
Toyota dealer or repairer, or another duly qualified and equipped pro-
fessional.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off. The light flashes
faster than usual to indicate that the system is operating.
Eco Driving Indicator
Light (P. 243)
(if equipped)
“PCS” warning
(P. 308)
EV drive mode indica-
tor (P. 221)
SRS airbag on-off
indicator (P. 1 7 1 )
Shift position indicators
(P. 224)
*1*1, 3

251 2-2. Instrument cluster
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When driving
PRIUS +_OM_OM47821E_(EE)
Warning lights
Warning lights inform the driver of malfunctions in any of the
vehicle’s systems. (P. 469)
*1: These lights turn on when the “POWER” switch is turned to ON
mode to indicate that a system check is being performed. They will
turn off after the hybrid system is on, or after a few seconds. There
may be a malfunction in a system if a light does not come on, or if
the lights do not turn off. Have the vehicle inspected by any autho-
rized Toyota dealer or repairer, or another duly qualified and
equipped professional.
*2: The light flashes to indicate a malfunction.
(red)
(yellow)(if equipped)(if equipped)
(if equipped)(if equipped)(yellow)(if equipped)(yellow)
*1*1*1*1*1*1*1
*1*1*1*1*1*1*1
*1*1, 2*1*1

291 2-4. Using other driving systems
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When driving
PRIUS +_OM_OM47821E_(EE)
Warning lights, warning code and buzzers for dynamic radar cruise
control
Warning lights, warning code and buzzers are used to indicate a system
malfunction or to inform the driver of the need for caution while driving.
The warning codes displayed on the meter indicate the following situations.
Fix each problem in accordance with the correction procedure, and check
that the system is operating normally.
If the warning code persists even after fixing, have the vehicle inspected by
any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
Warning code/
warning lightDetailsCorrection procedure
(yellow)Indicates that the radar
cruise control sensor is
dirty or covered with
ice.Clean the sensor.
(yellow)Indicates that the radar
cruise control system is
unable to judge vehi-
cle-to-vehicle distance.If the windshield wip-
ers are on, turn them
off or set them to either
the intermittent or the
slow mode.
(yellow)Indicates a malfunction
in the radar cruise con-
trol system.Press the “ON-OFF”
button once to deacti-
vate the system, and
then press the button
again to reactivate the
system.

311 2-4. Using other driving systems
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When driving
PRIUS +_OM_OM47821E_(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. 472, 476)

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469
When trouble arises
PRIUS +_OM_OM47821E_(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.