Page 540 of 716

5407-3. Do-it-yourself maintenance
HIGHLANDER_HV_U (OM48F12U)
■Use a CR2032 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appliance
shops or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur:
●The smart key system and wireless remote control will not function properly.
● The operational range will be reduced.
WARNING
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
● Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.
Page 559 of 716
559
8When trouble arises
HIGHLANDER_HV_U (OM48F12U)8-1. Essential information
Emergency flashers .......... 560
If your vehicle has to be stopped in an
emergency ...................... 561
8-2. Steps to take in an emergency
If your vehicle needs to be towed ..................... 562
If you think something is wrong .............................. 566
If a warning light turns on or a warning buzzer
sounds ............................ 567
If a warning message is displayed......................... 577
If you have a flat tire.......... 597
If the hybrid system will not start ..................... 621
If the electronic key does not operate
properly ........................... 623
If the 12-volt battery is discharged ...................... 626
If your vehicle overheats ........................ 631
If the vehicle becomes stuck ............................... 635
Page 591 of 716

5918-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
InteriorbuzzerExterior buzzerWarning messageDetails/Actions
Once ⎯ An attempt was made to start
the hybrid system with the shift
lever in an incorrect position.
→
Shift the shift lever to P
and start the hybrid sys-
tem.
Con-
tinu-
ous
⎯
The driver’s door was opened
when the shift lever was not in
P and the power switch was not
turned off.
→Shift the shift lever to P.
Con-
tinu-
ousContin-
uous
The driver’s door was opened
and closed while the electronic
key was not in the vehicle, the
shift lever was not in P and the
power switch was not turned
off.
→Shift the shift lever to P.
→ Bring the electronic key
back into the vehicle.
OnceContin-
uous
An attempt was made to exit
the vehicle with the electronic
key and lock the doors without
first turning the power switch off
when the shift lever was in P.
→Turn the power switch off
and lock the doors again.
(Flashes)
(Flashes)
(Displayed alternately)
(Flashes)
(Displayed alternately)
(Flashes)
Page 592 of 716

5928-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
Once3 times
The driver’s door was opened
and closed while the electronic
key was not in the vehicle, the
shift lever was in P and the
power switch was not turned
off.
→Turn the power switch off.
→ Bring the electronic key
back into the vehicle.
The electronic key was carried
outside the vehicle and a door
other than the driver’s door was
opened and closed while the
power switch was in a mode
other than off.
→Bring the electronic key
back into the vehicle.
Once⎯
The electronic key is not
detected when an attempt is
made to start the hybrid sys-
tem.
→Start the hybrid system
with the electronic key
present.
9
times⎯
An attempt was made to drive
when the electronic key was not
inside the vehicle.
→Confirm that the elec-
tronic key is inside the
vehicle.
⎯Contin-
uous
An attempt was made to lock
the doors using the smart key
system while the electronic key
was still inside the vehicle.
→Retrieve the electronic key
from the vehicle and lock
the doors again.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)
Page 593 of 716
5938-2. Steps to take in an emergency
8
When trouble arises
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. 539)
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)
(Flashes)
(Flashes)
Page 594 of 716

5948-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
Once⎯
• When the doors wereunlocked with the mechanical
key and then the power
switch was pressed, the elec-
tronic key could not be
detected in the vehicle.
• The electronic key could not be detected in the vehicle
even after the power switch
was pressed two consecu-
tive times.
→ Touch the electronic key to
the power switch while
depressing the brake
pedal.
Once⎯
During a hybrid system starting
procedure in the event that the
electronic key was not function-
ing properly ( →P. 623), the
power switch was touched with
the electronic key.
→ Press the power switch
within 10 seconds of the
buzzer sounding.
⎯⎯
Indicates that:
• With the power switch off, the
doors were unlocked and
then the driver’s door was
opened and closed;
• The power switch was turned to ACCESSORY mode with-
out starting the hybrid sys-
tem; or
• The shift lever was shifted to P from another position with
the power switch in ON
mode.
→ Press the power switch
while depressing the brake
pedal.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
Page 601 of 716
6018-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
Pull the strap upwards to open
the center deck board.
To secure the center deck
board, remove the hook on the
backside of the center deck
board and attach the hook to
the head restraint on the third
seats as shown.
Remove the mat.
Remove the cover.
If it is difficult to remove the
cover, you can use your key.
Taking out the spare tire
1
2
3
4
Page 621 of 716

6218-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. ( →P. 624)
● 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. 622)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( →P. 626)
● The 12-volt battery terminal connections may be loose or corroded.
(→ P. 517)
If the hybrid system will not start
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. 225)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.