2020 TOYOTA PRIUS PRIME fuel

PRIUS PRIME_OM_OM47C77U_(U)
4975-6. Driving tips
5
Driving
■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 tir e chains on the rear
tires.
● Install tire chains on front tires as tightly as possible. Retighten chains after
driving 1/4 - 1/2 mile (0.5 - 1.0 km).
● 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 ca use death or
serious injury.
● Use tires of the specified size.
● Maintain the recommended level of air pressure.
● Do not drive in excess of 75 mph (120 km/h), regardless of the type of
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 d riven safely,
and may cause death or serious injury.
● Do not drive in excess of the speed limit specified for the tir e chains being
used, or 30 mph (50 km/h), 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.
● Do not use LDA (Lane Departure Alert with steering control).
■ When parking the vehicle
When parking the vehicle without applying the parking brake, ma ke sure to
chock the wheels. If you do not chock the wheels, the vehicle m ay move
unexpectedly, possibly resulting in an accident.

PRIUS PRIME_OM_OM47C77U_(U)
5036-1. Using the air conditioning system and defogger
6
Interior features
Press .
Adjust the temperature setting. (P. 5 0 0 )
To stop the operation, press .
■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 operat ed is maintained.
■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.
■
Air conditioning eco mode
The air conditioning system is c ontrolled with low fuel consumption
prioritized such as re ducing fan speed, etc.
Press .
The air conditioning eco mode switches between on and off each time
is pressed.
“ECO” is displayed on the air conditioning screen when the air condi-
tioning eco mode is on.
Using automatic mode
Other functions
1
2
3

5086-1. Using the air conditioning system and defogger
PRIUS PRIME_OM_OM47C77U_(U)■
When driving on dusty roads
Close all windows. If dust thrown up by the vehicle is still drawn into the vehi-
cle after closing the windows, it is recommended that the air intake mode be
set to outside air mode and the fan speed to any setting except off.
■ Outside/recirculated air mode
●Setting to the recirculated air mode temporarily is recommended in prevent-
ing dirty air from entering the vehicle interior and helping to cool the vehicle
when the outside air temperature is high.
● Outside/recirculated air mode may automatically switch dependin g on the
temperature setting or the inside temperature.
■ Fresh air intake system while parking
When parking, the system automatically switches to outside air mode to
encourage better air circulation throughout the vehicle, helpin g to reduce
odors that occur when starting the vehicle.
■ Operation of the air conditioning system in the air conditionin g eco
mode
● In the air conditioning eco mode, the air conditioning system i s controlled as
follows to prioritize fuel efficiency:
• Engine speed and compressor operation controlled to restrict h eating/
cooling capacity
• Fan speed restricted when automatic mode is selected
● To improve air conditioning performance, perform the following operations:
• Adjust the fan speed
• Adjust the temperature setting
• Turn off the air conditioning eco mode
● When the driving mode is set to Eco driving mode, the air condi tioning eco
mode will be turned on automatically. Even in this case, the ai r conditioning
eco mode can be turned off by pressing . ( P. 419)
■ When the outside tempera ture falls to nearly 32F (0 C)
The dehumidification function may not operate even when is pressed.

5146-1. Using the air conditioning system and defogger
PRIUS PRIME_OM_OM47C77U_(U)■
Automatic mode indicator
If the fan speed setting or air flow modes are operated, the
indicator goes off. However, automatic mode for func-
tions other than that o perated is maintained.
■Switching between outside air and recirculated air modes
Select on the air conditioning control screen.
The mode switches between outside air mode and recirculated air mode
each time is selected.
The indicator illuminates when recirculated air mode is
selected.
■
Air conditioning eco mode
The air conditioning system is c ontrolled with low fuel consumption
prioritized such as re ducing fan speed, etc.
Select on the air condit ioning control screen.
The air conditioning eco mode switches between on and off each time
is selected.
The indicator illuminates when the air conditioning eco mode i s
on.
■
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 ai r flow and
temperature up.
The switch indicator illuminates when the defoggers are on.
To return to the previous mode, press again when the windshiel d is
defogged. Also, turning the power switch off during operation can return
to the previous mode.
Other functions

PRIUS PRIME_OM_OM47C77U_(U)
5196-1. Using the air conditioning system and defogger
6
Interior features
■When driving on dusty roads
Close all windows. If dust thrown up by the vehicle is still drawn into the vehi-
cle after closing the windows, it is recommended that the air intake mode be
set to outside air mode and the fan speed to any setting except off.
■ Outside/recirculated air mode
●Setting to the recirculated air mode temporarily is recommended in prevent-
ing dirty air from entering the vehicle interior and helping to cool the vehicle
when the outside air temperature is high.
● Outside/recirculated air mode may automatically switch dependin g on the
temperature setting or the inside temperature.
■ Fresh air intake system while parking
When parking, the system automatically switches to outside air mode to
encourage better air circulation throughout the vehicle, helpin g to reduce
odors that occur when starting the vehicle.
■ Operation of the air conditioning system in the air conditionin g eco
mode
● In the air conditioning eco mode, the air conditioning system i s controlled as
follows to prioritize fuel efficiency:
• Engine speed and compressor operation controlled to restrict h eating/
cooling capacity
• Fan speed restricted when automatic mode is selected
● To improve air conditioning performance, perform the following operations:
• Adjust the fan speed
• Adjust the temperature setting
• Turn off the air conditioning eco mode
● When the driving mode is set to Eco driving mode, the air condi tioning eco
mode will be turned on automatically. Even in this case, the ai r conditioning
eco mode can be turned off by selecting . ( P. 419)
■ When the outside tempera ture falls to nearly 32F (0 C)
The dehumidification function may not operate even when is
selected.
■ Ventilation and air conditioning odors
●To let the fresh air in, set the air conditioning system to the outside air mode.
● During use, various odors from inside and outside the vehicle m ay enter into
and accumulate in the air conditioning system. This may then ca use odor to
be emitted from the vents.
● In order to suppress odors that occur when the air conditioning system
starts, fresh air is automatically taken in when parked.
● To reduce potential odors from occurring, the start timing of t he blower may
be delayed for a short period of time immediately after the air conditioning
system is started in automatic mode.
■ Air conditioning filter
P. 628

564
PRIUS PRIME_OM_OM47C77U_(U)
7-1. Maintenance and care
Cleaning and protecting the vehicle exterior
●Working from top to bottom, liberally apply water to the vehicl e
body, wheel wells and underside of the vehicle to remove any di rt
and dust.
● Wash the vehicle body using a sponge or soft cloth, such as a
chamois.
● For hard-to-remove marks, use car wash soap and rinse thoroughl y
with water.
● Wipe away any water.
● Wax the vehicle when the wate rproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle
body is cool.
■Before car washes
Check that the fuel filler door and charging port lid on your v ehicle are closed
properly.
■ Automatic car washes
●Fold the mirrors before washing the vehicle. Start washing from the front of
the vehicle. Make sure to extend the mirrors before driving.
● Brushes used in automatic car washes may scratch the vehicle su rface and
harm your vehicle’s paint.
● Rear spoiler may not be washable in some automatic car washes. There
may also be an increased risk of damage to vehicle.
■ High pressure car washes
As water may enter the cabin, do not bring the nozzle tip near the gaps
around the doors or perimeter of the windows, or spray these ar eas continu-
ously.
Perform the following to protect the vehicle and maintain it in
prime condition:

572
PRIUS PRIME_OM_OM47C77U_(U)
7-1. Maintenance and care
■Caring for leather areas
Toyota recommends cleaning the interior of the vehicle at least twice a year to
maintain the quality of the vehicle’s interior.
■ Shampooing the carpets
There are several commercial foaming-type cleaners available. U se a sponge
or brush to apply the foam. Rub in overlapping circles. Do not use water.
Wipe dirty surfaces and let them dry. Excellent results are obt ained by keep-
ing the carpet as dry as possible.
■ Seat belts
Clean with mild soap and lukewarm water using a cloth or sponge . Also
check the belts periodically for excessive wear, fraying or cut s.
■ Cleaning the air intake vents and filters
●Dust on the air intake vents or filters may interferes cooling of the hybrid bat-
tery (traction battery) and results in poor electricity and fue l consumption.
Clean the air intake vents and filters periodically.
● If continuing to drive the vehicle with “Maintenance required f or Traction bat-
tery cooling parts See owner’s manual” shown on the multi-infor mation dis-
play, the hybrid battery (traction battery) may overheat, leadi ng to
decreasing in distance that can be driven using the electric mo tor. It may
cause poor electricity and fuel consumption or a malfunction. If the warning
message is shown, clean the air intake vents and filters immediately.
● Improper handling may result in damage to the grille or filters. If you have
any concerns about cleaning the filters, contact your Toyota dealer.
● If the warning message on the multi-information display does not disappear
after cleaning the filters, have the vehicle inspected by your Toyota dealer.
● Timing of cleaning filters differs depending on the use environ ment of the
vehicle.

PRIUS PRIME_OM_OM47C77U_(U)
5777-2. Maintenance
7
Maintenance and care
WARNING
■If your vehicle is no t properly maintained
Improper maintenance could result in serious damage to the vehi cle and
possible serious injury or death.
■ Handling of the 12-volt battery
● Engine exhaust, some of its constituents, and a wide variety of automobile
components contain or emit chemicals known to the State of Cali fornia to
cause cancer and birth defects and other reproductive harm. Work in a
well ventilated area.
● Oils, fuels and fluids contained in vehicles as well as waste produced by
component wear contain or emit chemicals known to the State of Califor-
nia to cause cancer and birth defects or other reproductive har m. Avoid
exposure and wash any affected area immediately.
● 12-volt battery posts, terminals and related accessories contain lead and
lead compounds which are known to cause brain damage. Wash your
hands after handling. ( P. 595)