ECO mode TOYOTA PRIUS 2021 Owners Manual (in English)

271-1. For safe use
PRIUS_OM_OM47E09U_(U)
1
For safety and security
WARNING
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering
with the pedals while driving. An unexpectedly high speed may result or it may
become difficult to stop the vehicle. This could lead to an acc ident, resulting in
death or serious injury.
■ When installing the driver’s floor mat
● Do not use floor mats designed for other models or different mo del year
vehicles, even if they are Toyota Genuine floor mats.
● Only use floor mats designed for the driver’s seat.
● Always install the floor mat securely using the retaining hooks (clips) pro-
vided.
● Do not use two or more floor mats on top of each other.
● Do not place the floor mat bottom-side up or upside-down.
■ Before driving
● Check that the floor mat is securely
fixed in the correct place with all the
provided retaining hooks (clips). Be
especially careful to perform this check
after cleaning the floor.
● With the hybrid system stopped and the
shift position in P, fully depress each
pedal to the floor to make sure it does
not interfere with the floor mat.

681-2. Child safety
PRIUS_OM_OM47E09U_(U)
WARNING
■When installing a child restraint system
Observe the following precautions.
Failure to do so may result in death or serious injury.
● Do not allow children to play with the seat belt. If the seat b elt becomes
twisted around a child’s neck, it may lead to choking or other serious inju-
ries that could result in death.
If this occurs and the buckle cannot be unfastened, scissors sh ould be
used to cut the belt.
● Ensure that the belt and plate are securely locked and the seat belt is not
twisted.
● Shake the child restraint system left and right, and forward and backward
to ensure that it has been securely installed.
● After securing a child restraint system, never adjust the seat.
● When a booster seat is installed, always ensure that the should er belt is
positioned across the center of the child’s shoulder. The belt should be
kept away from the child’s neck, but not so that it could fall off the child’s
shoulder.
● Follow all installation instructions provided by the child rest raint system
manufacturer.
● When securing some types of child restraint systems in rear seats, it may
not be possible to properly use the seat belts in positions next to the child
restraint without interfering with it or affecting seat belt ef fectiveness. Be
sure your seat belt fits snugly across your shoulder and low on your hips. If
it does not, or if it interferes with the child restraint, move to a different
position. Failure to do so may result in death or serious injur y.
■ When installing a booster seat
To prevent the belt from going into ALR lock mode, do not fully extend the
shoulder belt. ALR mode causes the belt to tighten only. This c ould cause
injury or discomfort to the child. ( P. 31)
■ Do not use a seat belt extender
If a seat belt extender is used when installing a child restraint system, the
seat belt will not securely hold the child restraint system, which could cause
death or serious injury to the child or other passengers in the event of sud-
den braking, sudden swerving or an accident.

781-3. Emergency assistance
PRIUS_OM_OM47E09U_(U)
■Safety Connect Services Information
●Phone calls using the vehicle’s Bluetooth® technology will not be possible
when Safety Connect is active and in use.
● Safety Connect is available beginning Fall 2009 on select Toyot a models (in
the contiguous United States only). Contact with the Safety Con nect
response center is dependent upon the telematics device being i n operative
condition, cellular connection availability, and GPS satellite signal reception,
which can limit the ability to reach the response center or rec eive emer-
gency service support. Enrollment and Telematics Subscription S ervice
Agreement required. A variety of subscription terms is availabl e; charges
vary by subscription term selected and location.
● Automatic Collision Notification, Emergency Assistance and Stolen Vehicle
Location are available in the United States, including Hawaii a nd Alaska,
Puerto Rico and Canada, and Enhanced Roadside Assistance are av ailable
in the United States, Puerto Rico and Canada.
● Automatic Collision Notification, Emergency Assistance, Stolen Vehicle and
Enhanced Road Assistance are not available in the U.S. Virgin I slands.
For vehicles first sold in the U.S. Virgin Islands, no Safety C onnect services
will function in or outside the U.S. Virgin Islands.
● Safety Connect services are not subject to section 255 of the T elecommuni-
cations Act and the device is not TTY compatible.
■ Languages
The Safety Connect response center will offer support in multip le languages.
The Safety Connect system will offer voice prompts in English, Spanish, and
French. Please indicate your language of choice when enrolling.
■ When contacting the response center
You may be unable to contact the response center if the network is busy.
When the power switch is turned to ON mode, the red indicator l ight
comes on for 2 seconds then turns off. Afterward, the green ind icator
light comes on, indicating t hat the service is active.
The following indicator light patterns indicate specific system usage
conditions:
● Green indicator light on = Active service
● Green indicator light flashing = Safety Connect call in process
● Red indicator light (except at vehicle start-up) = System malfunction
(contact your Toyota dealer)
● No indicator light (off) = Saf ety Connect service not active
Safety Connect LED light Indicators

881-4. Hybrid system
PRIUS_OM_OM47E09U_(U)
Hybrid system precautions
The illustration is an example for explanation and may differ from the
actual item.
Take care when handling the hybrid system, as it is a high volt -
age system (about 600 V at maximum) as well as contains parts
that become extremely hot when the hybrid system is operating.
Obey the warning labels attached to the vehicle.
Warning label
Service plug
Rear inverter (traction motor)
*
Rear electric motor (traction
motor)
*
Hybrid battery (traction battery) High voltage c
ables (orange)
Front electric motor (traction
motor)
Power control unit
Air conditioning compressor*: AWD models only
1
2
3
4
5
6
7
8
9

PRIUS_OM_OM47E09U_(U)
1012. Instrument cluster
2
Instrument cluster
Some information will be displayed automatically according to power
switch operation, vehicle condition, etc.
■When starting the hybrid system
When the hybrid system starts,
an opening animation is dis-
played on the 2 displays.
After the animation ends, the
screens switch to the normal
screen.
The opening animation will be
stopped in any of the following
situations. • When the shift position is changed to other than P
• When the Simple Advanced Parking Guidance System (if equipped)
is turned on
■
After refueling
When the power switch is
turned to ON mode after refuel-
ing, the gasoline price setting
screen* is displayed on the
multi-information display.
After refueling, always set the
gasoline price so that the “Eco
Savings” function ( P. 138) may
operate properly.
Settings related to the “Eco Savings” function can be changed i n the
“Meter Customize” settings. ( P. 153)
*: If the amount of fuel that the vehicle is refueled with is too small, this
screen may not be displayed. ( P. 123)
■
When the driving assist systems are operating
When using driving assist systems such as the dynamic radar
cruise control with full-speed range
* (  P. 326) and LTA (Lane Trac-
ing Assist)
* (  P. 307), information related to each system is auto-
matically displayed on the multi-information display depending on
the situation.
For details regarding the displayed information and the contents of the
display, refer to the explanation page of each system.
*: If equipped
Information automatically displayed

PRIUS_OM_OM47E09U_(U)
1052. Instrument cluster
2
Instrument cluster
■When disconnecting and reconnecting 12-volt battery terminals
The settings of the clock will be reset.
■ Calendar settings
●Until the calendar settings are set, the check screen is displa yed every time
the power switch is turned to ON mode.
● After the calendar information is set, it can be changed in the “Meter Cus-
tomize” settings. ( P. 153)
■ When the menu screen on the navi gation system is operated (vehicles
with 11.6-inch display)
■ Liquid crystal display
Small spots or light spots may appear on the display. This phen omenon is
characteristic of liquid crystal displays, and there is no prob lem continuing to
use the display.
■ Pop-up display
Some functions, such as the driving mode select switch and air conditioning
system, are operation-linked and display pop-up screens on the multi-infor-
mation display. If the pop-up screens of these functions are not desired, they
can be turned off in the “Meter Customize” settings. ( P. 153)
If calendar recording is interrupted due to
replacement of the 12-volt battery or 12-
volt battery discharge, etc., when the
power switch is turned to ON mode after
maintenance, the calendar settings check
screen is automatically displayed on the
multi-information display.
●
If date information is not set, the fuel
consumption record cannot be stored
correctly. When the calendar settings
check screen is displayed, make sure to
always set the settings. ( P. 151)
A pop-up display of the menu screen icon
is displayed on the multi-information dis-
play.
*
*
: The pop-up display on the navigation
system can be turned off in the “Meter
Customize” settings. ( P. 153)

PRIUS_OM_OM47E09U_(U)
1092. Instrument cluster
2
Instrument cluster
*1: These lights turn on when the power switch is turned to ON mode to indi-
cate 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 turn off. Have the veh icle
inspected by your Toyota dealer.
*2: The light flashes or illuminates to indicate a malfunction.
*3: The light flashes to indicate a malfunction.
*1High coolant temperature warning light P. 594
*1, 3PKSB OFF indicator (if equipped)P. 594
Open door warning light P. 594
Low fuel level warning lightP. 594
Driver’s and front passenger’s seat belt
reminder light P. 595
Rear passengers’ seat belt reminder light
(U.S.A.)P. 595
Rear passengers’ seat belt reminder light
(Canada)P. 595
*1Master warning light
P. 595
*1Tire pressure warning lightP. 595
Warning lightsPages

112
PRIUS_OM_OM47E09U_(U)
2. Instrument cluster
*1: These lights turn on when the power switch is turned to ON mode to indi-
cate 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 turn off. Have the veh icle
inspected by your Toyota dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off.
*4: Depending on the operating condition, the color and illuminati ng/flashing
state of the light change.

PRIUS_OM_OM47E09U_(U)
1132. Instrument cluster
2
Instrument cluster
■Main display and multi-information display
*: The displayed indicator changes according to the current driving mode.
■
Multi-information display (symbol display*)
*: These symbols are displayed along with a message. Also, the sy mbol dis-
plays listed here are only an example, and different symbols ma y be dis-
played according to the contents of the multi-information displ ay.
Indicators and symbols displayed on the display
IndicatorsPages
EV drive mode indicator P. 252
*“ECO MODE” indicator P. 347
*“PWR MODE” indicatorP. 347
EV Indicator P. 130
Symbol displayPages
Smart key system P. 245
Brake Override System/Drive-Start
Control/
Parking Support Brake function (if
equipped) P. 596
LTA (Lane Tracing Assist) (if equipped)P. 320
P. 320
Low engine oil pressure warning
(Canada only) P. 596

114
PRIUS_OM_OM47E09U_(U)
2. Instrument cluster
■BSM (Blind Spot Monitor) outsid e rear view mirror indicators
(if equipped) ( P. 349)
• When the BSM function is enabled on the screen of the multi-i nfor-
mation display, the power switch is turned to ON mode.
If the system is functioning correctly, the BSM outside rear vi ew mirror indi-
cators will turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminat e or do not
turn off, there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Toyota deale r.
●
Indicators are also displayed on the out-
side rear view mirrors.
● In order to confirm operation, the BSM
outside rear view mirror indicators illumi-
nate in the following situations:
• When the power switch is in ON
mode, the BSM function is enabled
on the screen of the multi-infor-
mation display.
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning li ght not
come on when you start the hybrid system, this could mean that these sys-
tems are not available to help protect you in an accident, whic h could result
in death or serious injury. Have the vehicle inspected by your Toyota dealer
immediately if this occurs.
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. 656)