Toyota Prius Plug-in Hybrid (2017 year). Instruction - part 30
5-5. Using the driving support systems
493
Disabling the TRC system
If the vehicle gets stuck in mud, dirt or snow, the TRC system may
reduce power from the hybrid system to the wheels. Pressing
to turn the system off may make it easier for you to rock the vehicle in
order to free it.
To turn the TRC system off,
quickly
press and release
The “Traction Control Turned Off”
will be shown on the multi-informa-
tion display.
Press
again to turn the sys-
tem back on.
■ Turning off both TRC and VSC systems
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To turn the TRC and VSC systems off, press and hold
for more than 3
seconds while the vehicle is stopped.
The VSC OFF indicator will come on and the “Traction Control Turned Off”
will be shown on the multi-information display.*
Press
again to turn the systems back on.
*: Pre-crash brake assist and pre-crash braking will also be disabled. The
PCS warning light will come on and the message will be shown on the
multi-information display. (P. 643)
■ When the message is displayed on the multi-information display show-
ing that TRC has been disabled even if
has not been pressed
TRC cannot be operated. Contact any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
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5-5. Using the driving support systems
■ Sounds and vibrations caused by the ABS, brake assist, VSC, TRC and
hill-start assist control systems
● A sound may be heard from the engine compartment when the brake pedal
is depressed repeatedly, when the hybrid system is started or just after the
vehicle begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard also after the vehicle comes to a stop.
■ECB operating sound
ECB operating sound may be heard in the following cases, but it does not
indicate that a malfunction has occurred.
● Operating sound heard from the engine compartment when the brake pedal
is operated.
● Motor sound of the brake system heard from the front part of the vehicle
when the driver’s door is opened.
● Operating sound heard from the engine compartment when one or two min-
utes passed after the stop of the hybrid system.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur, refrain
from excessive steering input or stop the vehicle and turn the hybrid system
off. The EPS system should return to normal within 10 minutes.
■ Electric power steering system warning light (warning buzzer)
P. 642
■ Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically
re-enabled in the following situations:
● When the power switch is turned off
● If only the TRC system is turned off, the TRC will turn on when vehicle
speed increases
If both the TRC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.
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■ Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will
operate:
●The shift position is in a position other than P or N (when starting off forward/
backward on an upward incline)
●The vehicle is stopped
● The accelerator pedal is not depressed
● The parking brake is not engaged
■ Automatic system cancelation of hill-start assist control
The hill-start assist control will turn off in any of the following situations:
● Shift the shift position to P or N
● The accelerator pedal is depressed
● The parking brake is engaged
● Approximately 2 seconds elapse after the brake pedal is released
■ Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal will
operate:
● The emergency flashers are off
●Actual vehicle speed is over 55 km/h (35 mph)
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● The brake pedal is depressed in a manner that cause the system to judge
from the vehicle deceleration that this is a sudden braking operation
■ Automatic system cancelation of emergency brake signal
The emergency brake signal will turn off in any of the following situations:
● The emergency flashers are turned on
● The brake pedal is released
● The system judges from the vehicle deceleration that is not a sudden brak-
ing operation
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5-5. Using the driving support systems
WARNING
■ The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded (such as
excessively worn tires on a snow covered road).
●The vehicle hydroplanes while driving at high speed on wet or slick road.
■ Stopping distance when the ABS is operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the
following situations:
● When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
● When driving over roads with potholes or uneven surfaces
■ TRC/VSC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRC/VSC systems are operating. Drive the
vehicle carefully in conditions where stability and power may be lost.
■ Hill-start assist control does not operate effectively when
●Do not overly rely on hill-start assist control. Hill-start assist control may
not operate effectively on steep inclines and roads covered with ice.
●Unlike the parking brake, hill-start assist control is not intended to hold the
vehicle stationary for an extended period of time. Do not attempt to use
hill-start assist control to hold the vehicle on an incline, as doing so may
lead to an accident.
■ When the TRC, VSC and/or ABS is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.
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WARNING
■ When the TRC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road condi-
tions. As these are the systems to help ensure vehicle stability and driving
force, do not turn the TRC/VSC systems off unless necessary.
■ Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and
total load capacity. In addition, make sure that the tires are inflated to the
recommended tire inflation pressure level.
The ABS, TRC and VSC systems will not function correctly if different tires
are installed on the vehicle.
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional for further information when replacing tires or
wheels.
■ Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction.
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5-6. Driving tips
Winter driving tips
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a man-
ner appropriate to the prevailing weather conditions.
Preparation for winter
● Use fluids that are appropriate to the prevailing outside tempera-
tures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
● Have a service technician inspect the condition of the 12-volt bat-
tery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires are the same size and brand, and that chains match
the size of the tires.
Before driving the vehicle
Perform the following according to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Check for and remove any excess ice or snow that may have accu-
mulated on the exterior lights, vehicle’s roof, chassis, around the
tires or on the brakes.
● Remove any snow or mud from the bottom of your shoes before
getting in the vehicle.
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5-6. Driving tips
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When driving the vehicle
Accelerate the vehicle slowly, keep a safe distance between you and
the vehicle ahead, and drive at a reduced speed suitable to road con-
ditions.
When parking the vehicle
Park the vehicle and shift the shift position to P and block the wheel
under the vehicle without setting the parking brake. The parking brake
may freeze up, preventing it from being released. If the vehicle is
parked without setting the parking brake, make sure to block the
wheels.
Failure to do so may be dangerous because it may cause the vehicle
to move unexpectedly, possibly leading to an accident.
Selecting tire chains
Use the correct tire chain size when mounting the tire chains. Chain
size is regulated for each tire size.
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Side chain
1
3.0 mm (0.12 in.)
2
30.0 mm (1.18 in.)
3
10.0 mm (0.39 in.)
Cross chain
4
4.0 mm (0.16 in.)
5
25.0 mm (0.98 in.)
6
14.0 mm (0.55 in.)
Regulations on the use of tire chains
Regulations regarding the use of tire chains vary depending on loca-
tion and type of road. Always check local regulations before installing
chains.
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5-6. Driving tips
■ Tire chain installation
Observe the following precautions when installing and removing chains:
●Install and remove tire chains in a safe location.
● Install tire chains on the front tires only. Do not install tire chains on the rear
tires.
● Install tire chains on front tires as tightly as possible. Retighten chains after
driving 0.5 - 1.0 km (1/4 - 1/2 mile).
● Install tire chains following the instructions provided with the tire chains.
■ Consumption of fuel and electricity
In cold temperatures, resistance of the parts of a vehicle (transmission, tires,
etc.) generally increases, resulting in increase of energy consumption. As a
result, fuel economy is likely to decrease.
Consumption of fuel and electricity of this vehicle is also likely to become
worse in cold temperatures.
WARNING
■ Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehicle control and cause death or
serious injury.
●Use tires of the specified size.
● Maintain the recommended level of air pressure.
●Do not drive at speeds in excess of the speed limit or the speed limit spec-
ified for the snow tires being used.
●Use snow tires on all, not just some wheels.
■ Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be driven safely,
and may cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being
used, or 50 km/h (30 mph), whichever is lower.
● Avoid driving on bumpy road surfaces or over potholes.
● Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden engine braking.
●Slow down sufficiently before entering a curve to ensure that vehicle con-
trol is maintained.
■ When parking the vehicle
When parking the vehicle without applying the parking brake, make sure to
chock the wheels. If you do not chock the wheels, the vehicle may move
unexpectedly, possibly resulting in an accident.
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5-6. Driving tips
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NOTICE
■ Repairing or replacing snow tires
Request repairs or replacement of snow tires from any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional or
legitimate tire retailers.
This is because the removal and attachment of snow tires affects the opera-
tion of the tire pressure warning valves and transmitters.
■ Fitting tire chains
The tire pressure warning valves and transmitters may not function correctly
when tire chains are fitted.
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5-6. Driving tips
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Interior features
6
6-1.
Using the air conditioning
system and defogger
Automatic air conditioning
system
504
Remote Air Conditioning
System
516
Seat heaters
520
6-2.
Using the interior lights
Interior lights list
522
• Front interior light
523
• Front personal lights
523
• Rear interior light
524
6-3.
Using the storage features
List of storage features
525
• Glove box
526
• Console box
526
• Cup holders
527
• Bottle holders/
door pockets
528
• Auxiliary boxes
529
Luggage compartment
features
530
6-4.
Using the other interior
features
Other interior features
535
• Sun visors
535
• Vanity mirrors
535
• Power outlets
536
• Wireless charger
537
• Coat hooks
543
• Assist grips
543
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6-1. Using the air conditioning system and defogger
Automatic air conditioning system
Air outlets and fan speed are automatically adjusted according
to the temperature setting.
The illustrations below are for left-hand drive vehicles.
The button positions and shapes will differ for right-hand drive
vehicles.
Air conditioning controls
■ Adjusting the temperature setting
Move the temperature setting
knob upwards to increase
the
temperature and downwards to
decreases the temperature.
Temperature
setting knob
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■ Fan speed setting
Move the fan speed setting
knob upwards to increase
the
fan speed and downwards to
decrease the fan speed.
The fan speed is shown on the
display. (7 levels)
Press
to turn the fan off.
Fan speed
setting knob
■ Change the airflow mode
Move the airflow change knob
upwards or downwards to
change the airflow mode.
The air outlets used are
switched each time the knob is
operated.
1
Air flows to the upper body
2
Air flows to the upper body
and feet
3
Air flows to the feet
Airflow change
6
4
Air flows to the feet and the
knob
windshield defogger oper-
ates
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6-1. Using the air conditioning system and defogger
■ S-FLOW mode
In S-FLOW mode, priority for the airflow is given to the front seats,
reducing the airflow and air conditioning effect on the rear seats.
If a passenger is not detected in the front passenger seat, priority
for the airflow will be given to the driver’s seat only.
In this case, the temperature indicator for the front passenger side will
turn off.
However, air will always be blown from the side outlet of the front pas-
senger seat.
S-FLOW mode will be activated automatically according to the set
temperature, outside temperature, etc. (P. 512)
The S-FLOW mode can be turned on/off manually by pressing
The
indicator illuminates when in S-FLOW mode.
■ Other functions
● Switching between outside air and recirculated air modes
(P. 508)
● Defogging the windshield (P. 509)
● Defogging the rear window and outside rear view mirrors
(P. 509)
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Using automatic mode
1
Press
2
Adjust the temperature setting. (P. 504)
3
To stop the operation, press
When in automatic mode, the air outlet modes and fan speed levels
are not displayed in the air conditioning control panel display.
■ Automatic mode indicator
If the fan speed setting or air flow modes are operated, the
indicator goes off. However, automatic mode for functions other
than that operated is maintained.
■ Adjusting the temperature for driver and passenger seats sep-
arately (DUAL mode)
To turn on the DUAL mode, perform the following either operation:
● Press
● Adjust the passenger’s side temperature setting.
6
The
indicator illuminates when the DUAL mode is on.
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6-1. Using the air conditioning system and defogger
Other functions
■ Switching between outside air and recirculated air modes
Press
The mode switches between outside air mode and recirculated air mode
each time
is pressed.
The
indicator illuminates when the recirculated air mode is
selected.
■ Blower customization
Fan speed setting during the automatic mode operation can be cus-
tomized.
To change the fan speed setting mode, press
Each time
is pressed, the fan speed setting mode changes as
follows.
“NORMAL” “ECO” “FAST” “NORMAL”
When “ECO” is displayed on the air conditioning screen, the air condi-
tioning is controlled with low fuel consumption prioritized such as reduc-
ing fan speed, etc.
When “FAST” is displayed on the screen, fan speed will be increased.
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6-1. Using the air conditioning system and defogger
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■ Defogging the windshield
Defoggers are used to defog the windshield and front side win-
dows.
Press
Set
to outside air mode if the recirculated air mode is used. (It
may switch automatically.)
To defog the windshield and the side windows early, turn the air flow and
temperature up.
The
indicator illuminates when the defoggers are on.
To return to the previous mode, press
again when the wind-
shield is defogged. Also, turning the power switch off during operation
can return to the previous mode.
■ Defogging the rear window and outside rear view mirrors
Defoggers are used to defog the rear window and to remove rain-
drops, dew and frost from the outside rear view mirrors.
Press
6
Defoggers switch between on and off each time
is pressed.
The
indicator illuminates when defoggers are on.
The defoggers will automatically turn off after a period of time.
■ Eco score (A/C score)
P. 239
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