2021 TOYOTA PRIUS battery

PRIUS_OM_OM47E09U_(U)
1572. Instrument cluster
2
Instrument cluster
WARNING
■Cautions while setting up the display
As the hybrid system needs to be operating during setting up th e display,
ensure that the vehicle is parked in a place with adequate vent ilation. In a
closed area such as a garage, exhaust gases including harmful c arbon
monoxide (CO) may collect and enter the vehicle. This may lead to death or
a serious health hazard.
NOTICE
■ While setting up the display
To prevent 12-volt battery discharge, ensure that the hybrid sy stem is oper-
ating while setting up the display features.

PRIUS_OM_OM47E09U_(U)
1632. Instrument cluster
2
Instrument cluster
■Enabling/disabling of the head-up display
When the head-up display is turned off with the “HUD” switch, it is not dis-
played until the “HUD” switch is used to turn the head-up displ ay on again.
(Operation of the head-up display is not linked with the power switch.)
■ Display brightness
●The brightness of the head-up display is automatically adjusted according to
the operation status of the headlights (on/off) and the brightn ess of the sur-
roundings.
● When the brightness of the head-up display is adjusted to a cer tain level or
higher, the display automatically dims when the vehicle is stopped. Once the
vehicle starts off and the vehicle speed reaches approximately 3.1 mph
(5 km/h) or more, the display automatically returns to its previous bright-
ness.
■ Vehicle speed display
In extremely cold environments, the display of the speedometer and the vehi-
cle speed of the head-up display may slightly differ.
■ Head-up display
The head-up display may seem dark and hard to see when viewed t hrough
sunglasses, especially polarized sunglasses.
■ When the 12-volt battery is disconnected
The customize settings of the head-up display will be reset.
■ Route guidance display (vehicles with navigation system)
The route guidance is not displayed on both the head-up display and multi-
information display simultaneously. When the route guidance is displayed on
the head-up display, the multi-information display does not dis play the route
guidance even if the navigation system-linked display ( P. 145) is selected
on the multi-information display.

PRIUS_OM_OM47E09U_(U)
1672. Instrument cluster
2
Instrument cluster
These images are examples only, and may vary slightly from actual
conditions.
When the vehicle is charging
the hybrid battery (traction bat-
tery)
When there is no energy flow
Hybrid battery (traction battery)
status
Audio system screen
Low Full

PRIUS_OM_OM47E09U_(U)
1692. Instrument cluster
2
Instrument cluster
These images are examples only, and may vary slightly from actual
conditions.
When the vehicle is charging
the hybrid battery (traction bat-
tery)
When there is no energy flow
Hybrid battery (traction battery)
status
Audio system screen
Low Full

PRIUS_OM_OM47E09U_(U)
1732. Instrument cluster
2
Instrument cluster
■Display the power consumption of the air conditioner
Display “Energy Monitor” screen.
Select on the upper right screen.
When you select the “ ”, and close the screen.
■Function summary
The energy monitor can be used to check the vehicle drive status,
hybrid system operation status and energy regeneration status.
■Flow of energy and display details
When energy is flowing, an arrow appears and a bright point of light
moves to show the direction of the flow of energy. When energy is
not flowing, the bright poin t of light are not displayed.
● The display when the engine is operating is in blue while the
engine is being warmed up and yellow afterwards.
● The arrow from the engine to the motor and tires is displayed i n
red.
● The arrow indicating energy consumption is displayed in yellow
and the arrow indicating energy regeneration or charging is dis -
played in green. Also, the hybrid battery (traction battery)
changes color accordingly.
● There are icons , , on the lower side of the
screen. The screen switches to each point of view when you
select it.
● When you select , this screen is displayed in the lower half of
the screen, it will be displayed together with the navigation
screen.
● These images are examples only, and may vary slightly from
actual conditions.
How to read the energy monitor
1
2

PRIUS_OM_OM47E09U_(U)
1752. Instrument cluster
2
Instrument cluster
*: When the air conditioning compressor is not operating, an arrow does notappear and the bright point of light are not displayed.
When the vehicle is charging the hybrid battery (traction batte ry)
Air Conditioning System use*Hybrid battery (traction battery) sta-
tus
LowFull

182
PRIUS_OM_OM47E09U_(U)
3-1. Key information
■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
● If the battery becomes low, an alarm will sound in the cabin an d a message
will be displayed on the multi-information display when the hyb rid system
stops.
● As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. ( P. 560)
• The smart key system or the wireless remote control does not o perate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
You can replace the battery by yourself ( P. 560). However, as there is a
danger that the electronic key may be damaged, it is recommende d that
replacement is carried out by your Toyota dealer.
● To avoid serious deterioration, do not leave the electronic key within 3 ft.
(1 m) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Table lamps
• Induction cookers

PRIUS_OM_OM47E09U_(U)
1833-1. Key information
3
Operation of each component
■If a message regarding the state of the electronic key or power switch
mode, etc. is shown
To prevent trapping the electronic key inside the vehicle, leav ing the vehicle
without turning off the power switch or other passengers from u nintentionally
taking the key out of the vehicle, etc., a message that prompts the user to
confirm the state of the electronic key or power switch mode ma y be shown
on the multi-information display. In those cases, follow the in structions on the
display immediately.
■ If “Key Battery Low Replace Key Battery” is displayed on the multi-infor-
mation display
The electronic key has a low battery. Replace the electronic ke y battery.
( P. 560)
■ Replacing the battery
P. 560
■ Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask
your Toyota dealer.
■ If “A New Key has been Registered Contact Your Dealer for Detai ls” is
displayed on the multi-information display
This message will be displayed each time the driver’s door is opened when
the doors are unlocked from the outside for approximately 10 da ys after a
new electronic key has been registered.
If this message is displayed but you have not had a new electro nic key regis-
tered, ask your Toyota dealer to check if an unknown electronic key (other
than those in your possession) has been registered.
■ If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.