2023 TOYOTA COROLLA HYBRID charging

3236-3. Do-it-yourself maintenance
6
Maintenance and care
Check the 12-volt battery as fol-
lows.
■12-volt battery exterior
Make sure that the 12-volt bat-
tery terminals are not corroded
and that there are no loose con-
nections, cracks, or loose
clamps.
Terminals
Hold-down clamp
■Before recharging
When recharging, the 12-volt bat-
tery produces hydrogen gas which
is flammable and explosive. There-
fore, observe the following precau-
tions before recharging:
●If recharging with the 12-volt bat-
tery installed on the vehicle, be
sure to disconnect the ground
cable.
●Make sure the charger is off when
connecting and disconnecting the
charger cables to the 12-volt bat-
tery.
■After recharging/reconnecting
the 12-volt battery (vehicles
with a smart key system)
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the 12-volt battery. If this
happens, use the wireless remote
control or the mechanical key to
lock/unlock the doors.
●Start the hybrid system with the
power switch in ACC. The hybrid
system may not start with the
power switch turned off. However,
the hybrid system will operate nor-
mally from the second attempt.
●The power switch mode is
recorded by the vehicle. If the
12-volt battery is reconnected, the
vehicle will return the power
switch mode to the status it was in
before the 1 2-volt battery was dis-
connected. Make sure to turn off
the power before disconnecting
the 12-volt battery. Take extra
care when connecting the 12-volt
battery if the power switch mode
prior to discharge is unknown.
If the system will not start even after
multiple attempts, contact your Toy-
ota dealer.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level
to go down slightly as the brake
pads wear out or when the fluid
level in the accumulator is high.
If the reservoir needs frequent
refilling, there may be a serious
problem.
12-volt battery
WARNING
■Chemicals in the 12-volt bat-
tery
The 12-volt battery contains poi-
sonous and corrosive sulfuric acid
and may produce hydrogen gas
which is flammable and explosive.
To reduce the risk of death or seri-
ous injury, take the following pre-
cautions while working on or near
the 12-volt battery:

3246-3. Do-it-yourself maintenance
Add washer fluid in the following
situations:
A washer does not work.
 The warning message
appears on the multi-informa-
tion display.
WARNING
●Do not cause sparks by touch-
ing the 12-volt battery terminals
with tools.
●Do not smoke or light a match
near the 12-volt battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the 12-volt
battery.
●Keep children away from the
12-volt battery.
■Where to safely charge the
12-volt battery
Always charge the 12-volt battery
in an open area. Do not charge
the 12-volt battery in a garage or
closed room where there is insuf-
ficient ventilation.
■Emergency measures regard-
ing electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean
water for at least 15 minutes
and get immediate medical
attention. If possible, continue
to apply water with a sponge or
cloth while traveling to the near-
est medical facility.
●If electrolyte gets on your skin
Wash the affected area thor-
oughly. If you fee l pain or burn-
ing, get medical attention
immediately.
●If electrolyte gets on your
clothes
It can soak through clothing on
to your skin. Immediately take
off the clothing and follow the
procedure above if necessary.
●If you accidentally swallow elec-
trolyte
Drink a large quantity of water
or milk. Get emergency medical
attention immediately.
■When disconnecting the
12-volt battery
Do not disconnect the negative (-)
terminal on the body side. The
disconnected negative (-) terminal
may touch the positive (+) termi-
nal, which may cause a short and
result in death or serious injury.
NOTICE
■When recharging the 12-volt
battery
Never recharge t he 12-volt bat-
tery while the hybrid system is
operating. Also, be sure all acces-
sories are turned off.
Adding the washer fluid

3737-2. Steps to take in an emergency
7
When trouble arises
■Hybrid system overheat warning light* (warning buzzer)
*: This light illuminat es on the multi-information display.
■Charging system warning light
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Malfunction indicator lamp (warning buzzer)
Warning lightDetails/Actions
Indicates that the temperature of the hybrid system is
excessively high
Stop the vehicle in a safe place.
Handling method ( P.414)
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
Indicates that the engine oil pressure is excessively low
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
The hybrid system;
 The electronic engine control system; or
 The electronic thrott le control system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.

3867-2. Steps to take in an emergency
ual Supplement” for the mainte-
nance interval applicable to your
vehicle.
■If “Maintenance Required Visit
Your Dealer” is displayed
Indicates that all maintenance is
required to correspond to the driven
distance on the maintenance sched-
ule
*.
Comes on approximately 5000
miles (8000 km) after the message
has been reset. (The indicator will
not work properly unless the mes-
sage has been reset.) Perform the
necessary maintenance. Please
reset the message after the mainte-
nance is performed. ( P.309)
*: Refer to the separate “Scheduled
Maintenance” or “Owner’s Man-
ual Supplement” for the mainte-
nance interval applicable to your
vehicle.
■If “Engine Maintenance
Required Visit Your Dealer” is
shown
The engine or an engine component
is malfunctioning. Have the vehicle
inspected by your Toyota dealer
immediately.
■If a message that indicates the
need for visiting your Toyota
dealer is displayed
The system or part shown on the
multi-information display is malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer immediately.
■If a message that indicates the
need for referring to Owner’s
Manual is displayed
●If “Engine Coolant Temp High” is
displayed, follow the instructions
accordingly. ( P.414)
●If any of the following messages
are displayed on the multi-infor-
mation display, it may indicate a
malfunction. Have the vehicle
inspected by you r Toyota dealer immediately.
• “Smart Key System Malfunction”
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunc- tion”
• “Accelerator System Malfunction”
●If any of the following messages
are displayed on the multi-infor-
mation display, it may indicate a
malfunction. Immediately stop the
vehicle and contact your Toyota
dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
●If any of the following messages
are shown on the multi-informa-
tion display, the vehicle may have
run out of fuel. Stop the vehicle in
a safe place and, if the fuel level is
low, refuel the vehicle. ( P. 8 2 )
• “Hybrid System Stopped”
• “Engine Stopped”
●If “Maintenance Required for Trac-
tion Battery Cooling Parts See
Owner's Manual” is shown, the fil-
ters may be clogged, the air intake
vent may be blocked, or there may
be a gap in the duct. Therefore,
perform the follo wing correction
procedure.
• Cleaning the hybrid battery (trac-
tion battery) air intake vents.
( P.347)
If the warning message is shown
even if the vents are cleaned,
have the vehicle inspected by
your Toyota dealer.
NOTICE
■If “High Power Consumption
Power to Climate Temporar-
ily Limited” is displayed fre-
quently
There is a possible malfunction
relating to the charging system or
the 12-volt battery may be deteri-
orating. Have the vehicle
inspected by you r Toyota dealer.

4127-2. Steps to take in an emergency
■To prevent 12-volt battery dis-
charge
●Turn off the headlights and the
audio system while the hybrid sys-
tem is off.
●Turn off any unnecessary electri-
cal components when the vehicle
is running at a low speed for an
extended period, such as in heavy
traffic.
■When the 12-volt battery is
removed or discharged
●Information stored in the ECU is
cleared. When the 12-volt battery
is depleted, have the vehicle
inspected at you r Toyota dealer.
●Some systems may require initial-
ization. (P.452)
■When removing the 12-volt bat-
tery terminals
When the 12-volt battery terminals
are removed, the information stored
in the ECU is cleared. Before
removing the 12-volt battery termi-
nals, contact your Toyota dealer.
■Charging the 1 2-volt battery
The electricity stor ed in the 12-volt
battery will discharge gradually even
when the vehicle is not in use, due
to natural discharge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the 12-volt battery may dis-
charge, and the hybrid system may
be unable to start. (The 12-volt bat-
tery recharges aut omatically while
the hybrid system is operating.)
■When recharging or replacing
the 12-volt battery (vehicles
with a smart key system)
●In some cases, it may not be pos-
sible to unlock the doors using the
smart key system when the
12-volt battery is discharged. Use
the wireless remote control or the
mechanical key to lock or unlock
the doors.
●The hybrid system may not start
on the first att empt after the 12-volt battery has recharged but
will start normally after the second
attempt. This is not a malfunction.
●The power switch mode is memo-
rized by the vehicle. When the
12-volt battery is reconnected, the
system will return to the mode it
was in before the 12-volt battery
was discharged. Before discon-
necting the 12-volt battery, turn
the power switch off.
If you are unsure what mode the
power switch was in before the
12-volt battery discharged, be
especially careful when recon-
necting the 12-volt battery.
■When replacing t
he 12-volt bat-
tery
●Use a 12-volt battery that con-
forms to European regulations.
●Use a 12-volt battery that the case
size is same as the previous one
(LN1), 20 hour rate capacity
(20HR) is equivalent (45Ah) or
greater, and per formance rating
(CCA) is equivalent (295A) or
greater.
• If the sizes differ, the 12-volt bat-
tery cannot be properly secured.
• If the 20 hour rate capacity is low,
even if the time p eriod where the
vehicle is not used is a short time,
the 12-volt battery may discharge
and the hybrid system may not be
able to start.
●For details, cons ult your Toyota
dealer.
WARNING
■When removing the 12-volt
battery terminals
Always remove the negative (-)
terminal first. If the positive (+) ter-
minal contacts any metal in the
surrounding area when the posi-
tive (+) terminal is removed, a
spark may occur, leading to a fire
in addition to ele ctrical shocks
and death or serious injury.

4248-1. Specifications
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
Ignition system (spark plug)
MakeDENSO FC16HR-CY9
Gap0.035 in. (0.9 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system (12-volt battery)
Open voltage at 68°F (20°C):
12.0 V or higher
(Turn the power switch off and turn on the
high beam headlights for 30 seconds.)
Charging rates5 A max.
Hybrid transmission
Fluid capacity*3.1 qt. (3.0 L, 2.6 Imp. qt.)
Fluid typeToyota Genuine e-Transaxle fluid TE
NOTICE
■Hybrid transmission fluid type
Using transmission fluid other than the above type may cause ab normal
noise or vibration, or ultimately damage the transmission of yo ur vehicle.
Rear differential (AWD models)
Fluid capacity*1.3 qt. (1.2 L, 1.1 Imp. qt.)
Fluid typeToyota Genuine e-Transaxle fluid TE

477Alphabetical Index
Replacing ............................. 398
Rotating tires ........................ 327
Size ...................................... 426
Snow tires ............................ 273
Spare tire.............................. 398
Tire pressure warning system........................................... 328
Warning light ........................ 376
Tools ................................ 388, 399
Top tether strap ........................ 68
Total load capacity ................. 420
To w i n g Dinghy towing....................... 169
Emergency towing................ 366
Towing eyelet ....................... 369
Trailer towing ........................ 169
Toyota Safety Sense AHB (Automatic High Beam) 191
Cruise control ....................... 244
Dynamic radar cruise control 236
Emergency Driving Stop System........................................... 247
LDA (Lane Departure Alert) .. 223
LTA (Lane Tracing Assist) ..... 218
PCS (Pre-Collision System) . 207
RSA (Road Sign Assist) ....... 234
Toyota Safety Sense 3.0[Toyota Safety Sense 3.0]PDA (Proactive driving assist) [PDA (Proactive driving assist)]........................................... 228
TRAC (Traction Control) ........ 266
Traction battery (hybrid battery) Hybrid battery (traction battery) air vents................................ 85
Location.................................. 82
Specification ......................... 422
Warning message .................. 86
Traction Control (TRAC) ........ 266
Traction motor (electric motor)77
Trailer towing .......................... 169 Transmission
Driving mode select switch ...264
Hybrid transmission ..............180
If th e s hif t le ver ca n no t b e s hif te d from P .................................181
Trip meters ........................97, 101
Trunk ........................................133 Internal trunk rele ase lever ...135
Smart key system .................134
Trunk light .............................135
Trunk opener ........................134
Wireless remote control........134
Trunk light ...............................135 Wattage ................................428
Turn signal lights Replacing light bulbs ............357
Turn signal lever ...................182
Wattage ................................428
U
USB charging port ..................291
V
Vanity lights ............................298Wattage ................................428
Vanity mirrors .........................298
Vehicle data recording ...............6
Vehicle identification number420
Vehicle information display .107, 11 3
Vehicle Stability Control (VSC) ...............................................266
VSC (Vehicle Stability Control) ...............................................266
W
Warning buzzers ABS ......................................374
Airbags .................................374
Approach warning ................243

478Alphabetical Index
Brake hold ............................ 379
Brake Override System ........ 374
Brake system ....................... 372
Charging system .................. 373
Drive-Start Control ............... 374
Electric power steering ......... 375
Engine .................................. 373
High coolant temperature ..... 372
Hybrid system ...................... 373
Hybrid system overheat ....... 373
Key reminder ........................ 171
LDA (Lane Departure Alert) 223, 377
Low engine oil pressure ....... 373
LTA (Lane Tracing Assist) ... 218, 377
Open door ......... ........... 129, 131
PDA (Proactive Driving Assist) ........................................... 377
Seat belt ....................... 375, 376
Warning label ............................ 82
Warning lights ........................ 372 ABS ...................................... 374
Brake hold operated indicator........................................... 379
Brake Override System ........ 374
Brake system ....................... 372
Charging system .................. 373
Cruise control indicator ........ 378
Drive-Start Control ............... 374
Driving assist information indica- tor ....................................... 378
Dynamic radar cruise control indicator.............................. 377
Electric power steering ......... 375
High coolant temperature ..... 372
Hybrid system overheat ....... 373
LDA indicator ........................ 377
Low engine oil pressure ....... 373
Low fuel level ....................... 375
LTA indicator ......................... 377
Malfunction indicator lamp ... 373 Parking brake indicator.........379
PDA indicator........................377
Pre-collision syst
em .............377
Seat belt reminder light 375, 376
Slip indicator .........................378
SRS ......................................374
Tire pressure ...... ..................376
Warning messages .................382
Washer Checking ..............................324
Preparing and checking before winter ..................................273
Switch ...................................194
Washing and waxing ..............302
Weight Cargo capacity .....................168
Load limits ............................168
Wheels .....................................344 Replacing .............................344
Size ......................................426
Window lock switch ...............152
Windows Power windows ....................150
Rear window defogger .........280
Washer .................................194
Windshield wiper de-icer .......282
Windshield wipers ..................194
Winter driving tips ..................273
Wireless charger.....................292
Wireless remote control Battery-Saving Function .......137
Locking/Unlocking ................124
Replacing the battery ...........350