2023 TOYOTA HIGHLANDER HYBRID fuel type

3104-5. Using the driving support systems
■Trail Mode
●Trail Mode is intended for use
when driving on bumpy roads. Do
not turn the switch on in other situ-
ations.
●Trail Mode controls the vehicle so
that it can use the maximum
amount of drive force when driving
on bumpy roads. As a result, fuel
efficiency may diminish when
compared to driving with Trail
Mode off.
●If Trail Mode is continuously used
for a long period of time, the load
on related parts increases and the
system may be un able to operate
effectively.
■When Trail Mode is canceled
In the following situations, Trail
Mode is automatically canceled
even if it is turned on.
●When the driving mode is
changed (P.308)
●When the power switch is turned
off
■During Trail Mode operation
The following types of situations
may occur, but they are not malfunc-
tions.
●Vibrations may be felt throughout
the vehicle or steering wheel
●Operating noise may be heard
from the engine compartment
■When an inspection at your
Toyota dealer is necessary
In the following si tuations, the sys- tem may be malf
unctioning. Have
the vehicle inspected by your Toyota
dealer immediately.
●When the slip indicator illuminates
while Trail Mode is on
●When the Trail Mode indicator
does not illuminat e even though
the Trail Mode switch is pressed

3315-1. Using the air conditioning system and defogger
5
Interior features
recirculated air mode is used.
■When driving on dusty roads
Close all windows. If dust thrown up
by the vehicle is still drawn into the
vehicle after closing the windows, it
is recommended that the air intake
mode be set to outside air mode and
the fan speed to any setting except
off.
■Outside/recirculated air mode
●Setting to the r ecirculated air
mode temporarily is recom-
mended in preventing dirty air
from entering the vehicle interior
and helping to c ool the vehicle
when the outside air temperature
is high.
●Outside/recirculated air mode may
automatically switch depending on
the temperature setting or the
inside temperature.
■Operation of the air condition-
ing system in Eco drive mode
●In Eco drive mode, the air condi-
tioning system is controlled as fol-
lows to prioritize fuel efficiency:
• Engine speed and compressor operation controlled to restrict
heating/cooling capacity
• Fan speed restr icted when auto-
matic mode is selected
●To improve air co nditioning perfor-
mance, perform the following
operations:
• Adjust the fan speed
• Turn off Eco drive mode ( P.308)
■When the outside temperature
is low
The dehumidification function may
not operate even when the “A/C”
switch is pressed.
■Ventilation and air conditioning
odors
●To let fresh air in, set the air condi-
tioning system to the outside air
mode.
●During use, various odors from
inside and outside the vehicle may enter into and accumulate in the
air conditioning system. This may
then cause odor
to be emitted
from the vents.
●To reduce potential odors from
occurring:
• It is recommended that the air conditioning system be set to out-
side air mode prior to turning the
vehicle off.
• The start timing of the blower may
be delayed for a short period of
time immediately after the air con-
ditioning system is started in auto-
matic mode.
●When parking, the system auto-
matically switches to outside air
mode to encourage better air cir-
culation throughout the vehicle,
helping to reduce odors that occur
when starting the vehicle.
■Air conditioning filter
 P.418
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of
the air conditioning system is
attached to the loc ation shown in
the following illustration.
●The meaning of each symbol on
the label are as follows:
Caution
Air conditioning sys-
tem
Air conditioning sys-
tem lubricant type

4747-2. Steps to take in an emergency
One of the following may be the
cause of the problem:
The electronic key may not be
functioning properly.
( P.477)
 There may not be sufficient
fuel in the vehicle’s tank.
Refuel the vehicle.
 There may be a malfunction
in the immobilizer system.
( P. 7 7 )
 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.474) One of the following may be the
cause of the problem:

The 12-volt battery may be
discharged. ( P.479)
 The 12-volt battery terminal
connections may be loose or
corroded. ( P.402)
One of the following may be the
cause of the problem:
 One or both of the 12-volt bat-
tery terminals may be discon-
nected. ( P.402)
 The 12-volt battery may be
discharged. ( P.479)
Contact your Toyota dealer if the
problem cannot be repaired, or if
repair procedures are unknown.
When the hybrid system does
not start, the following steps can
be used as an interim measure
to start the hybrid system if the
power switch is functioning nor-
mally.
Do not use this starting proce-
If the hybrid system
will not start
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.207)
The interior lights and
headlights are dim, or the
horn does not sound or
sounds at a low volume.
The interior lights and
headlights do not turn on,
or the horn does not
sound.
Starting the hybrid sys-
tem in an emergency

4918-1. Specifications
8
Vehicle specifications
vehicle.
Top left of the instrument
panel
The vehicle identification number is
stamped.
Left-hand side center pillar
This number is also on the Certifi-
cation Label.
■Engine number
The engine number is stamped
on the engine block as shown.
Engine
ModelA25A-FXS
Ty p e4-cylinder in line , 4-cycle, gasoline
Bore and stroke3.44  4.07 in. (87.5  103.48 mm)
Displacement151.8 cu. in. (2487 cm3)
Valve clearance (engine cold)Automatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating87 (Research Octane Number 91) or
higher
Fuel tank capacity
(Reference)17.1 gal. (65 L, 14.2 Imp. gal.)

4938-1. Specifications
8
Vehicle specifications
Outside temperature
SAE 0W-16 is the best choice
for good fuel economy and good
starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.
Oil viscosity (0W-16 is explained
here as an example):
• The 0W in 0W-16 indicates the characteristic of the oil
which allows cold startability.
Oils with a lower value before the W allow for easier starting
of the engine in cold weather.
• The 16 in 0W-16 indicates the viscosity characteristic of the
oil when the oil is at high tem-
perature. An oil with a higher
viscosity (one with a higher
value) may be better suited if
the vehicle is operated at high
speeds, or under extreme
load conditions.
How to read oil container label:
API registered mark is added to
some oil containers to help you
select the oil you should use.
Cooling system
Capacity
Gasoline
engine10.5 qt. (9.9 L , 8.7 Imp. qt.)
Power con-
trol unit2.0 qt. (1.9 L, 1.7 Imp. qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality et hylene glycol-based
non-silicate, non -amine, non-nitrite, and
non-borate coolant with long-life hybrid organic
acid technology
Do not use pla in water alone.

4998-1. Specifications
8
Vehicle specifications
adversely affected.
The malfunction indicator lamp on
the instrument cluster may come on.
If this happens, contact your Toyota
dealer for service.
■If your engine knocks
●Consult your Toyota dealer.
●You may occasionally notice light
knocking for a short time while
accelerating or driving uphill. This
is normal and there is no need for
concern.
NOTICE
■Notice on fuel quality
●Do not use impro per fuels. If
improper fuels are used, the
engine will be damaged.
●Do not use leaded gasoline.
Leaded gasoline can cause
damage to your vehicle’s
three-way catalytic converters
causing the emission control
system to malfunction.
●Do not use gasohol other than
the type previously stated.
Other gasohol may cause fuel
system damage or vehicle per-
formance problems.
●Using unleaded gasoline with
an octane number or rating
lower than the l evel previously
stated may cause persistent
heavy knocking.
At worst, this may lead to
engine damage.
■When refueling with gasohol
Take care not to spill gasohol. It
can damage your vehicle’s paint.
■Fuel-related poor driveability
If poor driveability (poor hot start-
ing, vaporization, engine knock-
ing, etc.) is encountered after
using a different type of fuel, dis-
continue the use of that type of
fuel.

5128-2. Customization
Units*2miles (MPG)
km (km/L)
OO—km (L/100 km)
miles (MPG Impe-rial)
Meter Type*32-dial1-dial—O—non-dial
Meter Style*3Smart
Casual
—O—Tough
Sporty
Dial Type*7SpeedometerHybrid System Indi- cator—O—
EV indicatorOnOff—O—
Eco Accelerator Guid-
ance
*3OnOff—O—
Drive information items
(First item)
*3Distance
Average vehicle speed
—O—
Elapsed time
Drive information items
(Second item)
*3Elapsed time
Average vehicle speed
—O—
Distance
Speedometer display*4OnOff—O—
Gadget content*4Off
Average vehicle speed
—O—Distance
Elapsed time
Fuel economy type*4Trip (after start)Total (after reset)*5
—O—
Tank (after refuel)*6
Fuel economy*3
Total average (Average fuel consumption [after reset])Trip average (Aver- age fuel consump- tion [after start])
—O—
Function*1Default settingCustomized setting

545Alphabetical Index
F
Flat tireTire pressure warning system........................................... 407
Vehicles with a spare tire ..... 461
Floor mats ................................. 24
Fluid Brake .................................... 495
Hybrid transmission.............. 494
Washer ................................. 401
Fog lights Switch................................... 229
Footwell light .................... ...... 343
Front passenger occupant clas- sification system .................... 43
Front seats Adjustment ........................... 147
Cleaning ............................... 383
Correct driving posture ........... 25
Driving position memory....... 153
Head restraints ..................... 156
Memory recall function ......... 155
Seat heaters ......................... 341
Seat position memory .......... 153
Seat ventilators .................... 341
Front side marker light Light switch .......................... 223
Front side marker lights Replacing light bulbs ............ 428
Front turn signal lights Replacing light bulbs ............ 428
Turn signal lever ................... 216
Fuel Capacity ............................... 491
Fuel gauge ....................... 87, 91
Information ........................... 498
Refueling .............................. 234
Type ..................................... 491
Warning light ........................ 448
Fuel consumption Average fuel economy ... 97, 109 Current fuel consumption97, 109
Fuel economy ...................97, 109
Fuel filler door If the fuel filler door cannot be opened ...............................476
Refueling ..............................234
Fuel gauge...........................87, 91
Fuses .......................................425
G
Garage door opene r ...............370
Gauges ................................87, 91
Glove box ................................347
Glove box light........................347
H
Head restraints .......................156
Headlight aim ..........................427
Headlights Adaptive Front-lighting System (AFS) ..................................225
Automatic High Beam system ...........................................226
Light switch...........................223
Replacing light bulbs ............428
Head-up display ...................... 114 Driving information display area........................................... 114
Hybrid System Indicator ....... 117
Navigation system-linked display ........................................... 117
Settings ................................ 116
Heated steering wheel............341
Heaters Automatic air conditioning sys-tem .....................................328
Heated steering wheel..........341
Outside rear view mirrors .....330
Rear automatic air conditioning system ................................337
Seat heaters ....... ..................341