2023 TOYOTA PRIUS PRIME auxiliary battery

1372-2. Charging
2
Plug-in hybrid system
driving.
The electrical consumption of
the hybrid battery (traction
battery) is suppressed
increasing EV driving dis-
tance by supplementing
power consumption for the
auxiliary systems using solar
power.Solar roof
12-volt battery
Solar ECU
Hybrid battery (traction bat-
tery)
Information related to the solar
charging system can be
checked on the multi-informa-
tion display and Multimedia Dis-
play. ( P.173)
■Solar charging system
●In the following cases, charging
the hybrid battery (traction battery)
via the solar charging system is
not performed.
• The power switch is not off • The “Battery Heater” is operating
( P.108)
• AC charging has started
• The hybrid battery (traction bat-
tery) is fully charged
• The hybrid battery (traction bat-
tery) is completely discharged
●In the following cases, the solar
charging system stops solar
power generation and power sup-
ply to the hybrid battery (traction
battery) and auxiliary systems.
• The temperature preservation function of the solar charging sys-
tem operates
• There is a malfun ction in the solar
charging system
• When the temperature of the hybrid battery (traction battery) is
approximately 23°F (-5°C) or less
●The amount of power generated
by the solar roof differs according
to the season, climate, weather
conditions, vehicle angle and sur-
rounding conditions.
●If even part of the solar roof is in
the shade, there may be an
extreme drop in power generation.
●Please adhere to the following in
order to allow full performance of
the solar roof.
• Clean the roof on a routine basis
(Especially fallen leaves and bird
droppings can lead to a substan-
tial decrease in power generation)
• Remove snow from the roof as soon as possible
• Do not attach any seals or stickers
to the roof
It is recommended not to install a
roof carrier etc. unless it is neces-
sary.
●When the hybrid battery (traction
battery) is fully charged, charging
the battery via the solar charging
system is not performed. When it
is not necessary to perform
charging from an external power
source, charge the vehicle as
much as possible using the solar
charging system during the day
Displaying information
related to the solar
charging system
A
B
C
D

1472-2. Charging
2
Plug-in hybrid system
■If “Charging Stopped High Energy Use See Owner’s Manual”
is shown
■If “Charging System Malfunction See Owner’s Manual” is
shown
■If “The Traction Battery Temp is low System put priority on
charging to preserve battery condition” is shown (Alaska and
Canada only)
Likely causeCorrection procedure
Power is being consumed by electri-
cal components of vehicle
Check the following items, and then
carry out charging again.
If the headlights and audio are
turned on, turn them off.
 Turn the power switch off.
If charging cannot be carried out,
even after performing the above, the
auxiliary battery may not be suffi-
ciently charged. Operate the hybrid
system for approximately 15 minutes
or more to charge the 12-volt battery.
Likely causeCorrection procedure
Malfunction occurred in charging
systemHave the vehicle inspected by your
Toyota dealer.
Likely causeCorrection procedure
The Hybrid battery (traction battery)
warming control was operated
(  P.109)
When the hybrid battery (traction
battery) warming control operates,
the charging schedule is not used
and charging is performed.
This is a control to protect the hybrid
battery (traction battery), and not a
malfunction.

656Alphabetical Index
IdentificationEngine .................................. 601
Vehicle ................................. 600
Ignition switch (power switch) ............................................... 251Auto power off function ........ 255
Changing the power switch modes ................................ 254
If your vehicle has to be stopped in an emergency................. 547
Starting the hybrid system.... 251
Illuminated entry system ....... 446
Illumination notification ......... 448
Immobilizer system .................. 70
Indicators ................................ 150
Initialization ............................ 634 Items to initialize................... 634
Maintenance......................... 495
Power back door .................. 199
Power windows .................... 227
Inside rear view mirror........... 216
Instrument panel light control ............................................... 160
Instrument panel ornament lights...................................... 446
Interior lights .......................... 446
Intuitive parking assist Function ............................... 363
Warning message ................ 365
J
JackPositioning a floor jack ......... 502
Vehicle-equipped jack .. 527, 575
Jack handle ..................... 527, 575
Jam protection function Memory recall function ......... 234
Power back door .................. 197
Power easy access system .. 231
Power windows .................... 227
Seat position memory .......... 231
K
Keyless entrySmart key system .................203
Wireless remote control........182
Keys .........................................180 Battery-saving function .........204
Electronic key .......................180
If the electronic key does not operate properly .................587
If you lose your keys.............586
Key number plate .................180
Keyless entry ................182, 203
Mechanical key.....................182
Power switch ........................251
Replacing the battery ...........538
Warning buzzer .. ..................204
Wireless remote control key .182
Knee airbags .............................35
L
Lane Tracing Assist (LTA) .....305 Operation..............................305
LATCH anchors ........................60
Lever Auxiliary catch le ver .............501
Hood lock releas e lever ........501
Shift lever .............................256
Tilt and telescopic steering lock release lever .......................215
Turn signal lever ...................262
Wiper lever ...........................275
License plate lights Replacing exterior lights .......543
Switch ...................................269
Lights AHB (Automatic High Beam) 272
Footwell lights.......................446
Front personal lights .............447
Headlight switch ...................269
Illuminated entry system .......446
Illumination notification .........448