Page 516 of 716
5167-3. Do-it-yourself maintenance
HIGHLANDER_HV_U (OM48F12U)
If any washer does not work or the
warning message appears on the
multi-information display, the
washer tank may be empty. Add
washer fluid.
Washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the hybrid system is hot or operating as
washer fluid contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces.
■ Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid bot-
tle.
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5287-3. Do-it-yourself maintenance
HIGHLANDER_HV_U (OM48F12U)■
Situations in which the tire pressure warning system may not oper-
ate properly
●In the following cases, the tire pr
essure warning system may not operate
properly.
• If non-genuine Toyota wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equip- ment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• An auxiliary-supported run- flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel housings.
• If the tire inflation pressure is extremely higher than the specified level.
• If the spare tire is in a location subject to poor radio wave signal
reception.
*
• If a large metallic object which ca n interfere with signal reception is
put in the luggage compartment.
*
*
: Vehicles with a full- size spare tire only
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large
display, airport or other facility that generates strong radio waves or
electrical noise
• When carrying a portable radio, cellular phone, cordless phone or
other wireless communication device
●When the vehicle is parked, the time taken for the warning to start or go
off could be extended.
●When tire inflation pressure declines rapidly for example when a tire has
burst, the warning may not function.
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 562 of 716
562
HIGHLANDER_HV_U (OM48F12U)
8-2. Steps to take in an emergency
The following may indicate a problem with your transmission. Contact
your Toyota dealer or commercial towing service before towing.
● A warning message for the hybrid system is shown on the multi-
information display and the vehicle does not move.
● The vehicle makes an abnormal sound.
Do not tow with a sling-type truck
to prevent body damage.
If your vehicle needs to be towed
If towing is necessary, we re commend having your vehicle
towed by your Toyota dealer or commercial towing service,
using a wheel-lift type truck or flatbed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws.
If towing your vehicle with a wheel-lift type truck, use a towing
dolly. (→ P. 563, 564)
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck
Page 577 of 716
5778-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the multi-
information display.
Multi-information display
If any of the warning message or indicator comes on again after the
following actions have been performed, contact your Toyota dealer.
If a warning mess age is displayed
If a warning message is shown on the multi-information display,
stay calm and perform the following actions:
1
2
Page 586 of 716

5868-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
Indicates that the power switch is turned off or
turned to ACCESSORY mode and the driver’s
door is opened while the lights are turned onA buzzer also sounds.
→ Turn the lights off.
(If equipped)
Indicates that the moon roof or panoramic moon
roof is not fully closed (with the power switch off,
and the driver’s door open)
A buzzer also sounds.
→ Close the moon roof or panoramic moon
roof.
Indicates a malfunction in the brake override sys-
tem
A buzzer also sounds.
→ Have the vehicle inspect ed by your Toyota
dealer.
Indicates that the hybrid system has overheated This message may be displayed when driving
under severe operating conditions. (For exam-
ple, when driving up a long steep hill.)
A buzzer also sounds.
→ Stop and check. ( →P. 631)
Indicates a malfunction in the Automatic High
Beam system
A buzzer also sounds.
→ Have the vehicle inspect ed by your Toyota
dealer.
Warning messageDetails/Actions
(Flashes)
(Flashes)
Page 590 of 716
5908-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
*1: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s ManualSupplement” for the maintenance interval applicable to your vehicle.
*2: For the EV drive mode operating conditions: →P. 231
■Messages displays
The message illustrations used are intended as examples, and may differ
from the image that is actually displayed on the multi-information display.
■ Conditions that the tire pressure warning system may not function prop-
erly
→P. 528
■ Warning buzzer
→P. 573
Indicates that the EV drive mode has been auto-
matically canceled
*2
The reason the EV drive mode is not available
(the hybrid battery [traction battery] charge is
low, speed is higher than the EV drive mode
operating speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.
→ Drive the vehicle for a while.
Warning messageDetails/Actions
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)