2020 TOYOTA HIGHLANDER HYBRID battery location

4166-3. Do-it-yourself maintenance
HIGHLANDER HV_U
The 12-volt battery is located in
the right-hand side of luggage
compartment.
Open the deck board.
Disengage the 8 claws and pull
the side deck board to remove
it. Make sure that the 12-volt bat-
tery terminals are not corroded
and that there are no loose con-
nections, cracks, or loose
clamps.
Te r m i n a l s
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 power switch on
the charger is off when connecting
and disconnecting the charger
cables to the 12-volt battery.
12-volt batter y
Location
Before removing the
12-volt battery cover
Removing the 12-volt bat-
tery cover
Exterior

4186-3. Do-it-yourself maintenance
HIGHLANDER HV_U
Check if the treadwear indica-
tors are showing on the tires.
Also check the tires for uneven
wear, such as excessive wear
on one side of the tread.
Check the spare tire condition
and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators
is shown by a “TWI” or “ ” mark,
WA R N I N G
●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 replacing the 12-volt
battery
Use a 12-volt battery designed for
this vehicle. Failure to do so may
cause gas (hydrogen) to enter the
passenger compartment, causing
a fire or explosion.
For replacement of the 12-volt
battery, contact your Toyota
dealer.
■When handling the 12-volt
battery
P. 4 9 5
NOTICE
■When recharging the 12-volt
battery
Never recharge the 12-volt bat-
tery while the hybrid system is
operating. Also, b e sure all acces-
sories are turned off.
Tires
Replace or rotate tires in
accordance with mainte-
nance schedules and tread-
wear.
Checking tires

4867-2. Steps to take in an emergency
HIGHLANDER HV_U
One of the following may be the
cause of the problem:
The electronic key may not be
functioning properly.
( P.489)
 There may not be sufficient
fuel in the vehicle’s tank.
Refuel the vehicle.
 There may be a malfunction
in the immobilizer system.
( P.79)
 There may be a malfunction
in the steering lock system.
 The hybrid system may be
malfunctioning due to an elec-
trical problem such as elec-
tronic key battery depletion or
a blown fuse. However,
depending on the type of mal-
function, an interim measure
is available to start the hybrid
system. ( P.487)
NOTICE
●Securely tighten the spare tire
clamp bolt to hold the spare
wheel carrier by the hook.
●Stow the flat tire in the spare tire
location. Failure to do so may
cause damage to the spare tire
carrier. Proper storage reduces
the possibility of i njury in a colli-
sion or during sudden braking.
●Have the flat tire repaired and
the spare tire replaced with it as
soon as possible.
■Proper storage of the spare
tire
●If the hoist assembly is slanted
when stowing a tire, the hoist
assembly may become stuck in
the wheel opening and the tire
may not be raised properly,
causing damage to the wheel or
the wire cable.
●Do not attempt to turn the spare
tire clamp bolt without a tire on
the hoist assembly, as doing so
may cause the wire cable to slip
off of the shaft inside the unit
and the wire cable may not be
able to be raised or lowered. If
the spare tire c lamp bolt has
been turned without a tire on the
hoist assembly and the wire
cable cannot be raised or low-
ered, contact your Toyota
dealer.
If the hybrid system
will not star t
Reasons for the hybrid sys-
tem not starting vary
depending on the situation.
Check the following and
perform the appropriate
procedure:
The hybrid system will not
start even though the cor-
rect starting procedure is
being followed. ( P.213)

560Alphabetical Index
HIGHLANDER HV_U
Rear automatic air conditioning system ................................ 348
Seat heaters ......................... 352
High mounted stoplight Replacing light bulbs ............ 443
High-voltage components ....... 75
Hill-start assist control .......... 319
Hood Open .................................... 408
Hooks Cargo net hooks ................... 364
Coat hooks ........................... 377
Retaining hooks (floor mat) .... 24
Horn ......................................... 165
Hybrid battery (tr action battery)
Location.................................. 75
Specification ......................... 508
Warning message .................. 78
Hybrid battery (traction battery) air vents .................................. 77
Hybrid system .......................... 71 Acoustic Vehicle Alerting System............................................. 73
Emergency shut off system .... 78
Energy monitor/consumption screen ................................ 117
EV drive mode...................... 218
High voltage components....... 75
Hybrid system precautions ..... 75
If the hybrid sy stem will not start
........................................... 486
Overheating.......................... 498
Power (ignition) switch ......... 213
Regenerative braking ............. 72
Starting the hybrid system.... 213
Hybrid System Indicator .. 90, 115
Hybrid transmission .............. 220 S mode ................................. 222
Hybrid vehicle driving tips .... 325
I
I/M test ..................................... 404 Identification
Engine ..................................506
Vehicle ..................................504
Ignition switch (power switch) ...............................................213Auto power off fun ction .........216
Changing the power switch modes.................................216
If your vehicle has to be stopped in an emergency .................452
Immobilizer system ..................79
Indicators ..................................86
Initialization Items to initialize ...................538
Maintenance .................401, 412
Power windows ....................179
Tire pressure w arning system
...........................................424
Inside rear view m irror ...166, 167
Instrument panel light control .92
Interior lights...........................356 Front interior light .................356
Rear interior light ..................356
Intuitive parking assist Function................................286
Warning message.................289
J
JackPositioning a floor jack .........409
Vehicle-equipped jack ..........475
Jack handle .............................475
Jam protection function Electronic roof sunshade ......186
Moon roof .............................182
Panoramic moon r oof ...........186
Power back door ..................140
Power windows ....................179

567Alphabetical Index
HIGHLANDER HV_U
Traction battery (hybrid battery) Hybrid battery (traction battery) air vents................................ 77
Location.................................. 75
Specification ......................... 508
Warning message .................. 78
Traction Control (TRAC) ........ 319
Traction motor (electric motor)71
Trail Mode ............................... 317
Trailer Sway Control .............. 319
Trailer towing .......................... 201
Transmission Driving mode select switch... 316
Hybrid transmission.............. 220
If the shift lever cannot be shifted from P................................. 221
S mode ................................. 222
Trip meters ................................ 91
Turn signal lights Replacing light bulbs ............ 443
Turn signal lever ................... 223
U
USB charging ports................ 368
V
Vanity lights ............................ 382
Vanity mirrors ......................... 382
VDIM (Vehicle Dynamics Inte-grated Management) ............ 320
Vehicle data recording ............... 6
Vehicle Dynamics Integrated Management (VDIM) ............. 320
Vehicle identifi cation number504
Vehicle information display ... 96, 106
Vehicle Stability Control (VSC) ............................................... 319
Ventilators (seat ventilators) . 352
VSC (Vehicle Stability Control) ............................................... 319
W
Warning buzzers ABS ......................................462
Airbags .................................462
Approach warning ................277
Brake hold ............................467
Brake Override System ........462
Brake system ........................460
Charging system ..................461
Downshifting .........................222
Drive-Start Control ................462
Electric power steering .........463
Engine ..................................461
Hands off steering wheel warn- ing (LTA) .............................265
High coolant temperature .....460
Hybrid system .......................461
Hybrid system overheat ........461
Intuitive parking assist .290, 293, 465
Low engine oil pressure .......461
LTA (Lane Tracing Assist) ...257, 260, 464
Open door ....................132, 134
PKSB (Parking Support Brake) ...........................................465
Pre-collision braking .............250
RCTA (Rear Cross Traffic Alert) ...........................................465
RCTA function.......................295
Seat belt .......................463, 464
Warning label ............................75
Warning lights .........................460 ABS ......................................462
Brake hold operated indicator...........................................467
Brake Override System ........462
Brake system ........................460
Charging system ..................461
Drive-Start Control ................462
Electric power steering .........463