Page 519 of 604

5197-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_HV_U (OM48D74U)
WARNING
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
■ 12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
● When working with the 12-volt battery, always wear safety glasses and
take care not to allow any 12-volt battery fluids (acid) to come into contact
with skin, clothing or the vehicle body.
● Do not lean over the 12-volt battery.
● In the event that 12-volt battery fluid comes into contact with the skin or
eyes, immediately wash the affected area with water and seek medical
attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the 12-volt battery support, termi-
nals, and other battery-related parts.
● Do not allow children near the 12-volt battery.
■ After recharging the 12-volt battery
Have the 12-volt battery inspected at your Toyota dealer as soon as possi-
ble.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, which may be detrimental to the health of
passengers.
■ When replacing the 12-volt battery
P. 4 1 1
Page 531 of 604
5318-1. Specifications
8
Vehicle specifications
HIGHLANDER_HV_U (OM48D74U)
Fuel
Fuel typeUnleaded gasoline only
Octane rating87 (Research Octane Number 91) or higher
Fuel tank capacity
(Reference)17.1 gal. (65.0 L, 14.2 Imp. gal.)
Front electric motor (traction motor)
Ty p ePermanent magnet synchronous motor
Maximum output123 kW
Maximum torque247 ft•lbf (335 N•m, 34.2 kgf•m)
Rear electric motor (traction motor)
Ty p ePermanent magnet synchronous motor
Maximum output50 kW
Maximum torque103 ft•lbf (139 N•m, 14.2 kgf•m)
Hybrid battery (traction battery)
Ty p eNickel-Metal hydride battery
Voltage9.6 V/module
Capacity6.5 Ah (3HR)
Quantity30 modules
Overall voltage288 V
Page 534 of 604
5348-1. Specifications
HIGHLANDER_HV_U (OM48D74U)
Cooling system
Capacity (reference)
Gasoline engine
Power control unit13.5 qt. (12.8 L, 11.2 Imp. qt.)
2.0 qt. (1.9 L, 1.7 Imp. qt.)
Coolant typeUse either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK20HR11
Gap0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
12-volt battery
Open voltage at 68 F
(20 C): 12.6 12.8 V Fully charged
12.2
12.4 V Half charged
11 . 8
12.0 V Discharged
(Voltage is checked 20 minutes after the hybrid
system and all lights are turned off.)
Charging rates5 A max.
Page 551 of 604

5518-1. Specifications
8
Vehicle specifications
HIGHLANDER_HV_U (OM48D74U)
Production options
weight
The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty 12-volt battery, and special trim
Rim
A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a
rim by style or code
Rim widthNominal distance between rim flanges
Vehicle capacity
weight (Total load
capacity)The rated cargo and luggage load plus 150 lb.
(68 kg) times the vehicle’s designated seating
capacity
Vehicle maximum load
on the tire
The load on an individual tire that is deter-
mined by distributing to each axle its share of
the maximum loaded vehicle weight, and
dividing by two
Vehicle normal load on
the tire
The load on an individual tire that is deter-
mined by distributing to each axle its share of
curb weight, accessory weight, and normal
occupant weight (distributed in accordance
with Table 1* below), and dividing by two
Weather sideThe surface area of the rim not covered by the
inflated tire
Bead
The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separationA breakdown of the bond between compo-
nents in the bead
Tire related termMeaning
Page 566 of 604

5668-2. Customization
HIGHLANDER_HV_U (OM48D74U)
■Vehicle customization
●When the smart key system is off, the entry unlock function cannot be cus-
tomized.
● When the doors remain closed after unlocking the doors and the timer acti-
vated automatic door lock function activates, signals will be generated in
accordance with the operation buzzer volume and operational signal (Emer-
gency flashers) function settings.
■ Changing of the power back door opening angle
The opening angle setting can be changed through operation of either the
power back door switch or the audio system screen.
However, if the power switch is on and the power back door switch is used to
change the opening angle setting, the changed opening angle will not be
reflected on the audio system screen until the power switch is turned off and
then on again.
■ When customizing on the audio system screen
Stop the vehicle in a safe place, apply the parking brake, and shift the shift
lever to P. Also, to prevent 12-volt battery discharge, leave the hybrid system
operating while customizing the features.
WARNING
■ During customization
As the hybrid system needs to be oper ating during customization, ensure
that the vehicle is parked in a place with adequate ventilation. In a closed
area such as a garage, exhaust gases including harmful carbon monoxide
(CO) may collect and enter the vehicle. This may lead to death or a serious
health hazard.
NOTICE
■ During customization
To prevent 12-volt battery discharge, ensure that the hybrid system is oper-
ating while customizing features.
Page 567 of 604
5678-2. Customization
HIGHLANDER_HV_U (OM48D74U)
8
Vehicle specifications
Items to initialize
The following items must be initialized for normal system opera-
tion after such cases as the 12-volt battery being reconnected,
or maintenance being performed on the vehicle:
ItemWhen to initializeReference
Power back door
• After reconnecting or chang- ing the battery
• After changing a fuse
P. 134
Maintenance data
(U.S.A. only)After the maintenance is per-
formedP. 387
Tire pressure warning sys-
temWhen changing the tire infla-
tion pressure by changing trav-
eling speed or load weight, etc.
P. 414
Page 584 of 604

584
HIGHLANDER_HV_U (OM48D74U)
What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your keys or mechanical keys, new genuine keys can be made
by your Toyota dealer. (P. 125)
●If you lose your electronic keys, the risk of vehicle theft increases signifi-
cantly. Contact your Toyota dealer immediately. ( P. 127)
●Is the electronic key battery weak or depleted? (P. 428)
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. ( P. 230)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
●The function may not operate properly due to the condition of the radio
wave. (P. 151)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. (P. 131)
If you have a problem, check the following before contacting
your Toyota dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
Page 585 of 604
585What to do if... (Troubleshooting)
HIGHLANDER_HV_U (OM48D74U)
●Did you press the power switch while firmly depressing the brake pedal?
(P. 229)
●Is the shift lever in P? ( P. 232)
●Is the electronic key anywhere detectable inside the vehicle?
(P. 149)
●Is the steering wheel unlocked? ( P. 232)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way.
(P. 514)
●Is the 12-volt battery discharged? ( P. 516)
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( P. 512)
●It is locked automatically to prevent theft of the vehicle. ( P. 232)
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress
the brake pedal
The steering wheel cannot be tu rned after the hybrid system
is stopped