2023 SUBARU SOLTERRA battery replacement

1624-1. Key information
Owners Manual_USA_M42C01_en
4-1.Key information
The following keys are provided
with the vehicle.Electronic keys
• Operating the smart key system ( P.187)
• Operating the wireless remote control function ( P.164)
• Operating the Remote Air Condi- tioning System ( P.409)
Mechanical keys
Key number plate
■When riding in an aircraft
When bringing an electronic key
onto an aircraft, make sure you do
not press any buttons on the elec-
tronic key while inside the aircraft
cabin. If you are carrying an elec-
tronic key in your bag, etc., ensure
that the buttons are not likely to be
pressed accidentally. Pressing a
button may cause the electronic key
to emit radio waves that could inter-
fere with the oper ation of the air-
craft.
■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 and a message will be disp
layed on the
multi-information display when the
EV system stops.
●To reduce key battery depletion
when the electronic key is to not
be used for long periods of time,
set the electronic key to the bat-
tery-saving mode. ( P.188)
●As the electronic key always
receives radio waves, the battery
will become depleted even if the
electronic key is not used. The fol-
lowing symptoms indicate that the
electronic key battery may be
depleted. Replace the battery
when necessary.
• The smart key system or the wire- less remote contro l does not oper-
ate.
• The detection area becomes smaller.
• The LED indicator on the key sur-
face does not turn on.
You can replace the battery by your-
self ( P.497). However, as there is
a danger that the electronic key may
be damaged, it is recommended
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 electri-
cal appliances that produce a
magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Table lamps
• Induction cookers
●If the electronic key is near the
vehicle for longer than necessary,
even if the smart key system is not
operated, the key battery may
become depleted faster than nor-
mal.
■If a message regarding the state
of the electronic key or power
switch mode, e tc. is shown
To prevent trapping the electronic
Keys
Key types

3935-5. Driving tips
Owners Manual_USA_M42C01_en
5
Driving
5-5.Driving tips
 Use fluids that are appropriate
to the prevailing outside tem-
peratures.
• Power control unit coolant
• Heater coolant
• Washer fluid
Have a service technician
inspect the condition of the
12-volt battery.
 Have the vehicle fitted with
four snow tires or purchase a
set of tire chains for the front
tires.
Ensure that all tires are the same
size and brand, and that chains
match the size of the tires.
Perform the following according
Winter driving tips
Carry out the necessary
preparations and inspec-
tions before driving the
vehicle in winter. Always
drive the vehicle in a man-
ner appropriate to the pre-
vailing weather conditions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions
to reduce the risk of accidents.
Failure to do so m ay result in a
loss of vehicle control and cause
death or serious injury.
●Use tires of the specified size.
●Maintain the recommended
level of air pressure.
●Do not drive in excess of 75
mph (120 km/h), regardless of
the type of snow tires being
used.
●Use snow tires on all, not just
some wheels.
■Driving with tire chains
Observe the following precautions
to reduce the risk of accidents.
Failure to do so may result in the
vehicle being unable to be driven
safely, and may cause death or
serious injury.
●Do not drive in excess of the
speed limit specifi ed for the tire
chains being used, or 30 mph
(50 km/h), whichever is lower.
●Avoid driving on bumpy road
surfaces or over potholes.
●Avoid sudden acceleration,
abrupt steering, sudden brak-
ing and shifting operations that
cause sudden regenerative
braking.
●Slow down sufficiently before
entering a curve to ensure that
vehicle control is maintained.
●Do not use LTA (Lane Tracing
Assist).
NOTICE
■Repairing or replacing snow
tires
Request repairs or replacement of
snow tires from your Toyota
dealer or legitimate tire retailers.
This is because the removal and
attachment of snow tires affects
the operation of the tire pressure
warning valves and transmitters.
Before driving the vehicle

4066-1. Using the air conditioning system and defogger
Owners Manual_USA_M42C01_en
1Press the automatic mode
switch.
The dehumidification function begins to operate. Air outlets and
fan speed are automatically
adjusted according to the tempera-
ture setting and humidity.
2
Adjust the temperature set-
ting.
3 To stop the operation, press
the “OFF” switch.
If the fan speed setting or air
flow modes are operated, the
automatic mode indicator goes
off. However, automatic mode
for functions other than that
operated is maintained.
■Using automatic mode
Fan speed is adjusted automati-
cally according to the temperature
setting and the ambient conditions.
Therefore, the fan may stop for a
while until warm or cool air is ready
to flow immediately after the auto-
matic mode switch is pressed.
To turn on the “SYNC” mode,
perform any of the following pro-
cedures:
 Press the “SYNC” mode
switch.
 Adjust the front passenger’s
side temperature setting.
The indicator comes on when the
“SYNC” mode is on.
WARNING
■To prevent the windshield
from fogging up
Do not use the windshield defog-
ger switch during cool air opera-
tion in extremely humid weather.
The difference between the tem-
perature of the outside air and
that of the windshield can cause
the outer surface of the wind-
shield to fog up, blocking your
vision.
■To prevent burns
●Do not touch the rear view mir-
ror surfaces when the outside
rear view mirror defoggers are
on.
●Vehicles with windshield wiper
de-icer: Do not touch the glass
at lower part of the windshield
or to the side of the front pillars
when the windshield wiper de-
icer is on.
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the air conditioning
system on longer than necessary
when the EV system is off.
■When repairing/replacing
parts of the air conditioning
system
Have repair/replacement per-
formed by your Toyota dealer.
When a part of the air conditioning
system, such as the evaporator, is
to be replaced, it must be
replaced with a new one.
Using automatic mode
Adjusting the temperature
for driver and front pas-
senger seats separately
(“SYNC” mode)

4557-2. Maintenance
Owners Manual_USA_M42C01_en
7
Maintenance and care
7-2.Maintenance
■Repair and replacement
It is recommended that genuine
Toyota parts be used for repairs to
ensure performanc e of each sys-
tem. If non-Toyota parts are used in
replacement or if a repair shop other
than a Toyota dealer performs
repairs, confirm the warranty cover-
age.
■Allow inspection and repairs to
be performed by a Toyota
dealer
●Toyota technicians are well-
trained specialists and are kept up
to date with the latest service
information. They are well
informed about the operations of
all systems on your vehicle.
●Keep a copy of the repair order. It
proves that the maintenance that
has been performed is under war-
ranty coverage. If any problem
should arise while your vehicle is
under warranty, your Toyota
dealer will promptly take care of it.
General maintenance should be
performed on a daily basis. This
can be done by yourself or by a
Toyota dealer.
Scheduled maintenance should
be performed at specified inter-
vals according to the mainte-
nance schedule.
For details about maintenance
items and schedules, refer to the
“Scheduled Maintenance Guide” or
“Owner’s Manual Supplement”.
You can perform some mainte-
nance procedures by yourself.
Please be aware that do-it-your-
self maintenance may affect
Maintenance require-
ments
To ensure safe and econom-
ical driving, day-to-day care
and regular maintenance
are essential. It is the
owner’s responsibility to
perform regular checks.
Toyota recommends the fol-
lowing maintenance:
WARNING
■If your vehicle is not properly
maintained
Improper maintenance could
result in serious damage to the
vehicle and possible death or seri-
ous injury.
■Handling of the 12-volt bat-
tery
●Oils and fluids contained in
vehicles as well as waste pro-
duced by component wear con-
tain or emit chemicals known to
the State of California to cause
cancer and birth defects or
other reproductive harm. Avoid
exposure and wash any
affected area immediately.
●12-volt battery posts, terminals
and related accessories con-
tain lead and lead compounds
which are known to cause brain
damage. Wash your hands after
handling. ( P.468)
General maintenance
Scheduled maintenance
Do-it-yourself mainte-
nance

5458-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
8
When trouble arises1 Stop the vehicle in a safe
place and turn off the air con-
ditioning system.
2 Leave the EV system operat-
ing and carefully lift the hood.
3 Check if the cooling fan is
operating.
If the fan is operating:
Wait until the “EV System
overheated Output power
reduced” message disap-
WARNING
■When replacing the 12-volt
battery
●When the vent plug is close to
the hold down cl amp, the bat-
tery fluid (acid) may leak.
●For information regarding bat-
tery replacement, contact your
Toyota dealer.
NOTICE
■When handling jumper cables
When connecting the jumper
cables, ensure that they do not
become entangled in the cooling
fan.
If your vehicle over-
heats
When “EV System over-
heated Output power
reduced” is shown on the
multi-information display,
your vehicle may be over-
heating.
NOTICE
■Cooling system coolant
The radiator coolant is exclusive
for radiator usage. Damage may
occur when water or any other
type of coolant is used, so never
use any other fluid. When there is
no “Toyota Genuine Traction Bat-
tery Coolant”, immediately contact
your Toyota dealer.
Correction procedures

5529-1. Specifications
Owners Manual_USA_M42C01_en
*1: 2WD models
*2: AWD models
*1: The coolant capacity is the quantity of reference.
If replacement is ne cessary, contact your Toyota dealer.
*2: 2WD models
*3: AWD models
Rear electric motor (traction motor) (AWD models)
Model1YM
Ty p ePermanent magnet synchronous motor
Maximum output80 kW
Maximum torque124.3 ft•lbf (168.5 N•m, 17.2 kgf•m)
Traction battery
Ty p eLithium-ion battery
Voltage3.7 V/cell
Capacity201 Ah*1
205 Ah*2
Quantity96 cells
Nominal voltage355.2 V
Cooling system
Capacity*16.2 qt. (5.9 L, 5.2 Imp. qt.)*2
7.8 qt. (7.4 L, 6.5 Imp. qt.)*3
Coolant type
Use either of the following:
• “Toyota Genuine Tra ction Battery Cool-
ant”
• Similar high-quality ethylene glycol- based, low electric conductivity coolant,
non-amine and non-b orate coolant with
azole additives.
Do not use plain water alone.