ECO mode TOYOTA PRIUS PLUG-IN HYBRID 2020 Owner's Manual

1622-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Capacity reduction of the hybrid battery (traction battery)
The capacity of the hybrid battery (traction battery) will decline gradually
when the hybrid battery (traction battery) is in use. The rate at which it
declines will differ in accordance with environmental conditions and the way
in which the vehicle is used. Observing the following can help suppress bat-
tery capacity decline.
●Avoid parking the vehicle in areas with a high temperature under direct sun-
light when the hybrid battery (traction battery) is fully charged.
●Avoid accelerating and decelerating frequently and suddenly when EV driv-
ing.
●Avoid frequent driving near the top speed for EV driving. (P. 1 0 4 )
●Leave a low level of charge in the hybrid battery (traction battery) when
leaving the vehicle undriven for a long period of time.
After confirming that EV mode has switched to HV mode, turn the power
switch off.
●Use the charging schedule function as much as possible in order to fully
charge the hybrid battery (traction battery) immediately before starting off.
(P. 176)
Also, if the hybrid battery (traction battery) capacity reduces, the distance that
can be driven in EV mode decreases. However, vehicle performance does
not significantly become worse.
■When the remaining charge of the hybrid battery (traction battery) is low
after charging
In the following situations, the remaining charge of the hybrid battery (traction
battery) after charging completes may be less than normal in order to protect
the system (the EV driving range after the battery is fully charged may be
shorter).
*
●Charging is carried out when the outside temperature is low or high
●Charging is carried out immediately after high-load driving or in extreme
heat
When none of the above situations apply and there is a drastic drop in the
remaining charge of the hybrid battery (traction battery) after charging com-
pletes, have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
*: When this occurs, even if the remaining charge display of the hybrid battery
(traction battery) shows that it is fully charged, the remaining charge rapidly
decreases faster than normal.
■When the charging amount sent to the hybrid battery (traction battery)
decreases
When the amount of power supplied by the charger is low or operation of the
“Traction Battery Heater”, etc., reduces the charging power sent to the hybrid
battery (traction battery), the charging amount sent to the hybrid battery (trac-
tion battery) may decrease.

1682-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
If the charging indicator flashes
after inserting the charging con-
nector:
The charge schedule is regis-
tered (P. 176). Carry an elec-
tronic key and press the
charging connector lock switch
to unlock the charging connec-
tor.
After temporarily removing the charging connector, reinsert it within
approximately 5 seconds. (P. 168)
If the error warning indicator on the CCID (Charging Circuit Interrupting
Device) flashes during charging, check P. 130 and follow the correction
procedure.
The charging indicator will turn off when charging is completed.
■During charging
●The surface of the CCID (Charging Circuit Interrupting Device) may become
hot, but this does not indicate a malfunction. (When using Mode 2 charging
cable.)
●Depending on radio wave conditions, interference may be heard on the
radio.
●The current charging condition and the estimated time until charging will
complete can be checked on the multi-information display. (P. 159)
●During charging, the hybrid battery (traction battery) status indicator illumi-
nates and flashes, and changes according to the charging amount.
(P. 123)
■If the charging indicator flashes after connecting the charging cable
The charge schedule (P. 176) is registered and charging cannot be per-
formed. To cancel charging using the charging schedule and start charging,
perform any of the following procedures.
●Turn “Charge Now” on (P. 184)
●While the charging indicator is flashing, remove and reconnect the charging
connector within 5 seconds
■When the charging connector cannot be inserted into the charging inlet
P. 145

1782-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■When the charging cable remains connected to the vehicle
Even if multiple consecutive charge schedules are registered, the next
charge will not be carried out according to the charging schedule until the
charging cable is removed and reconnected after charging completes. Also,
when the hybrid battery (traction battery) is fully charged, charging according
to the charging schedule will not be carried out.
■“Climate Prep” (if equipped)
●When the air conditioning-linked setting is turned on, the air conditioning
operates until the set departure time. Therefore, the air conditioning will con-
sume electricity and charging may not complete by the set departure time.
●If the hybrid battery (traction battery) is fully charged, charging will not be
carried out, even if the charge schedule is set. However, if “Climate Prep” is
turned on, the air conditioning will operate only once when it nears the time
set in “Departure”. If this occurs, the air conditioning will consume electricity
and the remaining charge of the hybrid battery (traction battery) when
departing may be decreased.
●When the doors are unlocked, the air conditioning system does not operate.
■When charging schedules are ignored
When the following operations are performed while the charging schedule is
on standby, charging schedule is temporarily canceled and charging is
started.
●When the Remote Air Conditioning System (P. 585) is operated
●When turning “Charge Now” on (P. 184)
●When an operation that temporarily cancels charging using the charging
schedule is performed (P. 168)
■Effects of outside temperature
When the charging mode is set to “Departure”, charging schedule may be
ignored due to the outside temperature and charging may start.
■“Traction Battery Cooler” (if equipped) (P. 155)
When charging is carried out using the charging schedule, the hybrid battery
(traction battery) cooling function may operate according to the temperature
of the hybrid battery (traction battery).
●When the charging mode is set to “Start”, cooling starts at the set charging
start time.
●When the charging mode is set to “Departure”, cooling starts approximately
30 minutes before the charging start time. However, if there is no time to fin-
ish charging by the charging schedule, the hybrid battery (traction battery)
cooling time may be shortened and “Traction Battery Cooler” may not oper-
ate.

1942-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
*: Refer to P. 125 for details regarding charging indicator illumination and
flashing.
Refer to the following table and carry out the appropriate correction
procedure.
Charging indicator flashes and charging cannot be carried out.
When charging indicator
flashes
*:
Charge schedule is regis-
tered
When you wish to charge according to the
charging schedule, wait until the set time.
To start charging, set “Charge Now” to “On”.
(P. 184)
When charging indicator rap-
idly flashes
*:
Malfunction occurred in an
external power source or the
vehicleStart the hybrid system and follow the
instructions displayed by the message on
the multi-information display. (P. 197)
When charging schedule function does not operate normally
Likely causeCorrection procedure
Cannot charge at desired time
Vehicle clock is not properly
adjustedCheck the clock settings and adjust it to the
proper time. (P. 210)
The vehicle calendar is not
set correctly.Check the calendar setting and set it to the
correct date. (P. 212)
Charging cable is not con-
nected to vehicleBefore using the charging schedule, con-
nect the charging cable.
Incorrect charging mode
selected
Check the charging mode setting. (P. 1 7 6 )
When the charging mode is “Start”, charging
starts at the set time, but when it is “Depar-
ture”, charging is completed by the set time.
(The charging start time is automatically
controlled by the system.)
Likely causeCorrection procedure

1952-2. Charging
2
Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Charging starts, even though charge schedule is registered
“Charge Now” is set to “On”
When charging according to the charging
schedule, set “Charge Now” to “Off”.
(P. 184)
Charge schedule is set to
“Off”Check that charge schedule is not set to
“Off”. (P. 1 8 2 )
Charging mode is set to
“Departure” and schedule
departure time is close to
current timeWhen the system determines that there is
no time to finish charging by the set sched-
uled departure time, it starts charging.
Check the charge schedules.
Charging cable was
removed and reinserted
while charging indicator was
flashingIf the charging cable is removed and rein-
serted while the charging indicator is flash-
ing, the charging schedule is canceled
(P. 168). Temporarily remove the charging
cable, and then reconnect it.
The Remote Air Conditioning
System was operated
When the Remote Air Conditioning System
is operated, the system will start charging,
even if the charge schedule is registered. To
carry out charging using the charging
schedule, stop the Remote Air Conditioning
System, and then reconnect the charging
cable.
“Traction Battery Heater”
(P. 154) operated
When the charging mode is set to “Depar-
ture”, “Traction Battery Heater” may operate
before charging starts. Check the status of
the charging indicator. (P. 125)
Charging ends earlier than time set in “Departure”
Charging end time does not
match estimated end time
due to condition of power
source or outside tempera-
tureIf sudden changes in temperature or
changes in the condition of the power
source occur while charging, charging may
end earlier than the time estimated by the
system.
Likely causeCorrection procedure

2123. Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■The meters and display illuminate when
The power switch is in ON mode.
■Adjusting the instrument cluster brightness (P. 206)
●The brightness levels that can be selected differ depending on whether the
tail lights are on and surrounding brightness levels, as shown in the table
below.
*: 22 levels of the brightness are displayed on the setting screen. However,
the brightness setting will be the brightest when other than 1st level (the
darkest) is selected. If other than 1st or 22nd level is selected, when the
tail lights are turned on in a dark place, the instrument cluster brightness
setting will be the selected level.
●If the taillights are illuminated in a dark environment, the instrument cluster
light dims. However, when the brightness of the instrument cluster is set to
minimum or maximum (1st or 22nd level of the instrument cluster bright-
ness), even if the taillights are illuminated, the instrument cluster light will
not dim.
■When disconnecting and reconnecting 12-volt battery terminals
The settings of the clock will be reset.
■Calendar setting
●Until the calendar setting is completed, the check screen is displayed every
time the power switch is turned to ON mode.
●After the calendar information is set, it can be changed in the “Meter Custo-
mize” settings. (P. 260)
The tail lights are offThe tail lights are on
In a bright place2 levels*2 levels*
In a dark place22 levels
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 setting check
screen is automatically displayed on the
multi-information display.
●If date information is not set, the electric-
ity and fuel consumption record cannot
be stored correctly. Also, the charging
schedule function can not operate prop-
erly. When the calendar setting check
screen is displayed, make sure to com-
plete the calendar setting. (P. 257)

2163. Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
*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 vehicle
inspected by any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer.
*2: The light flashes or illuminates to indicate a malfunction.
*3: The light flashes to indicate a malfunction.
The indicators inform the driver of the operating state of the vehicle’s
various systems.
Low fuel level warning light P. 717
Driver’s and front passenger’s seat belt
reminder lightP. 717
Rear passengers’ seat belt reminder light P. 717
*1Master warning light P. 717
*1Tire pressure warning light P. 718
Indicators
Warning lightsPages
IndicatorsPages
Turn signal indicator P. 385
Tail light indicator P. 387
Parking brake indicator P. 386
Headlight high beam indicator P. 387

2183. Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
*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 vehicle
inspected by any authorized Toyota re tailer or Toyota authorized repairer,
or any reliable repairer.
*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 illuminating/flashing
state of the light change.
Toyota parking assist-sensor indicator
(if equipped) P. 499
*1, 3PKSB OFF indicator (if equipped) P. 512
*1S-IPA indicator (if equipped) P. 527
*1“PASSENGER AIR BAG” indicator P. 51
IndicatorsPages

2193. Instrument cluster
3
Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Main display and multi-information display
*1: The displayed indicator changes according to the current plug-in hybrid
system operation mode.
*2: The displayed indicator changes according to the current driving mode.
Indicators and symbols displayed on the display
IndicatorsPages
*1EV drive mode indicator P. 98
*1EV City mode indicator P. 98
*1Hybrid battery charge mode indicator P. 99
*2“ECO MODE” indicator P. 468
*2“PWR MODE” indicator P. 468
Speed limiter indicator P. 470
EV indicator P. 238

2203. Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Multi-information display (symbol display*)
*: These symbols are displayed along with a message. Also, the symbol dis-
plays listed here are only an example, and different symbols may be dis-
played according to the contents of the multi-information display.
■BSM (Blind Spot Monitor) outside rear view mirror indicators
(if equipped) (P. 473)
• When the BSM function is enabled on the screen of the multi-infor-
mation display, the power switch is turned to ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indi-
cators will turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not
turn off, there may be a malfunction in the system.
If this occurs, have the vehicle inspected by any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer.
Symbol displayPages
Smart entry & start system P. 373
Brake Override System/Drive-Start
Control/Parking Support Brake function
(if equipped)P. 719
LTA (Lane Tracing Assist)P. 443
P. 443
●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.