Page 486 of 608
4867-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
OnceContin-
uous
An attempt was made to lock
either front door by opening a
door and putting the inside lock
button into the lock position,
then closing the door with the
electronic key still inside the
vehicle.
Retrieve the electronic key
from the vehicle and lock
the doors again.
Once
The electronic key has a low
battery.
Replace the electronic key
battery. ( P. 432)
Once
The steering lock could not be
released within 3 seconds of
the power switch being
pressed.
Press the power switch
while depressing the brake
pedal and moving the
steering wheel left and
right.
Once
Indicates a malfunction in the
smart key system
Have the vehicle inspected
by your Toyota dealer.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
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Page 488 of 608

4887-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
*: The hybrid system may not be restarted depending on the vehicle condi-tion.
Once
The power switch has been
turned off with the shift lever in
a position other than P.
Shift the shift lever to P.
Once
After the power switch has
been turned off with the shift
lever in a position other than P,
the shift lever has been shifted
to P.
Turn the power switch off.
Power was turned off due to the
automatic power off function.
Next time when starting
the hybrid system,
increase the engine speed
slightly and maintain that
level for approximately 5
minutes to recharge the
12-volt battery.
Con-
tinu-
ous
Indicates that the hybrid system
was stopped in an emergency
while driving
To restart the hybrid sys-
tem, shift the shift lever to
N and turn the power
switch to ON mode.
*
Once
Indicates that the power switch
has been pressed while driving
Except when emergency
stopping of the vehicle is
needed, immediately
release the power switch.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
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(Flashes)
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Page 514 of 608

5147-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. ( P. 518)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● There may be a malfunction in the immobilizer system. (P. 9 1 )
● There may be a malfunction in the steering lock system.
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 515)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 520)
● The 12-volt battery terminal conn ections may be loose or corroded.
If the hybrid system will not star t
Reasons for the hybrid system not starting vary depending on
the situation. Check the follo wing and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 229)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.
Page 515 of 608
5157-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
One of the following may be the cause of the problem:
●One or both of the 12-volt batter y terminals may be disconnected.
● The 12-volt battery may be discharged. ( P. 520)
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 st art the hybrid system if the power
switch is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer.
The interior lights and headlight s do not turn on, or the horn
does not sound.
Emergency start function
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Page 517 of 608

5177-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
Use the mechanical key (P.
125) in order to perform the fol-
lowing operations:
Locks all the doors
Closes the windows and moon
roof
*1 (turn and hold)*2
( P. 181, 184)
Unlocks the door
Turning the key rearward unlocks the driver’s door. Turning the key once
again within 5 seconds unlocks the other doors.
Opens the windows and moon roof*1 (turn and hold)*2
( P. 181, 184)
*1: If equipped
*2: This setting must be customized at your Toyota dealer.
If the electronic key does not operate
properly
If communication between the electronic key and vehicle is
interrupted ( P. 151) or the electronic key cannot be used
because the battery is depleted, the smart key system, push but-
ton start and wireless remote control cannot be used. In such
cases, the doors can be opened and the hybrid system can be
started by following the procedure below.
Locking and unlocking the doors and key linked functions
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Page 519 of 608

5197-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when
stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
( P. 432)
■ Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 230)
■ When the electronic key does not work properly
●Make sure that the smart key system has not been deactivated in the cus-
tomization setting. If it is off, turn the function on.
(Customizable features P. 560)
● Check if battery-saving mode is set. If it is set, cancel the function.
(P. 150)
WARNING
■ When using the mechanical key an d operating the power windows or
moon roof
Operate the power window or moon roof after checking to make sure that
there is no possibility of any passenger having any of their body parts
caught in the window or moon roof.
Also, do not allow children to operate the mechanical key. It is possible for
children and other passengers to get caught in the power window or moon
roof.
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Page 520 of 608
5207-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Vehicles with an alarm, confirm
that the electronic key is being
carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and doors locked. ( P. 95)
Open the hood and fuse box
cover.
Open the exclusive jump start-
ing terminal cover.
If the 12-volt batter y is discharged
The following procedures may be used to start the hybrid sys-
tem if the 12-volt battery is discharged.
You can also call your Toyota de aler or a qualified repair shop.
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2
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Page 521 of 608

5217-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
Connect the jumper cables according to the following procedure:Connect a positive jumper cabl e clamp to the exclusive jump
starting terminal on your vehicle.
Connect the clamp on the other e nd of the positive cable to the
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metallic point away from the exclusive
jump starting terminal and any moving parts, as shown in the
illustration.
Start the engine of the second vehicle. Increase the engine speed
slightly and maintain at that le vel for approximately 5 minutes to
recharge the 12-volt battery of your vehicle.
Open and close any of the doors of your vehicle with the power
switch off.
Maintain the engine speed of t he second vehicle and start the
hybrid system of your vehicle by turning the power switch to ON
mode.
Make sure the “READY” indicato r comes on. If the indicator does
not come on, contact your Toyota dealer.4
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