Page 522 of 604
5227-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48D74U)
The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.Reservoir
“FULL”
“LOW”
Radiator cap
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fans operate and to check for
coolant leaks from th e radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact your Toyota
dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Toyota dealer.
4
1
2
3
4
5
6
7
Page 524 of 604

5247-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48D74U)
■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.
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● After the hybrid system has been turned off, check that the “READY” indi-
cator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fan may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fan,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the radiator cap and the coolant reservoir caps while the
hybrid system and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently.
Adding cool coolant to a hot hybrid system too quickly can cause damage to
the hybrid system.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additive.
Page 593 of 604

593Alphabetical index
HIGHLANDER_HV_U (OM48D74U)
If the shift lever cannot be shifted from P .... 512
If you have a flat tire ............. 486
If you think something is wrong.................................. 456
If your vehicle becomes stuck ................................... 525
If your vehicle has to be
stopped in an emergency ... 451
If your vehicle needs to be towed .................................. 452
If your vehicle overheats ....... 521
Energy monitor ........................ 117
Engine....................................... 530 Accessory mode ................... 230
Compartment ........................ 399
Hood ..................................... 396
How to start the hybrid system ......... ....................... 229
Identification number ............ 530
If the hybrid system
will not start ........................ 510
Ignition switch
(power switch) .................... 229
Overheating .......................... 521
Power switch......................... 229
Engine coolant ......................... 403
Capacity ................................ 534
Checking ............................... 403
Preparing and checking before winter....................... 316
Engine coolant temperature gauge...................................... 103 Engine oil ................................. 400
Capacity................................ 532
Checking............................... 400
Oil pressure warning light ..... 457
Oil pressure warning
message............................. 474
Preparing and checking before winter ...................... 316
Engine switch .......................... 229
Enhanced VSC ......................... 291
EPS (Electric Power Steering) ..... 292 Function ................................ 292
Warning light......................... 458
EV drive mode ......................... 235
Event data recorder (EDR)........ 11
Flat tire ..................................... 486
Floor mats .................................. 28
Fluid Brake .................................... 535
Hybrid transmission .............. 535
Washer ................................. 406
Fog lights ................................. 254 Replacing light bulbs ............ 434
Switch ................................... 254
Wattage ................................ 539
Front automatic air conditioning system ............. 326
Front door courtesy lights Location ................................ 339
Wattage ................................ 539
Front fog lights ........................ 254 Replacing light bulbs ............ 434
Switch ................................... 254
Wattage ................................ 539
Front passenger occupant classification system .............. 54
F
Page 597 of 604

597Alphabetical index
HIGHLANDER_HV_U (OM48D74U)
Multi-information display (with color display) ............... 111
Audio system-linked.............. 111
Driving information ................ 113
Dynamic radar cruise control................................. 269
Energy monitor ..................... 117
LDA (Lane Departure Alert)........ 284
Navigation system-linked ...... 111
Settings display..................... 114
Switching the display ............ 112
Warning message ................. 466
Multi-information display
(with monochrome display) Driving information ................ 107
Settings display..................... 109
Warning message ................. 466
Navigation system
*
Noise from under vehicle............ 8
Odometer.................................. 103
Oil Engine oil .............................. 532
Opener Back door.............................. 135
Fuel filler door ....................... 261
Glass hatch ........................... 144
Hood ..................................... 396
Outer foot lights....................... 339
Outside rear view mirrors ....... 177
Adjusting and folding ............ 177
BSM (Blind spot monitor) ...... 304
Mirror position memory ......... 165
Outside rear view mirror defoggers ........................... 328 Outside temperature
display.................................... 353
Overheating, Hybrid system... 521
Panoramic moon roof ............. 187 Jam protection function ........ 189
Operation .............................. 187
Parking assist sensors (intuitive parking assist)
*
Parking brake........................... 243 Operation .............................. 243
Parking brake engaged warning buzzer ................... 472
Parking brake engaged warning message ............... 472
Parking lights........................... 244
Light switch ........................... 244
Replacing light bulbs ............ 434
Wattage ................................ 539
PCS (Pre-Collision System).......... 297 Function ................................ 297
PCS OFF switch ................... 298
Warning light......................... 458
Personal lights......................... 340 Wattage ................................ 539
Power back door ..................... 134
Power control unit ..................... 85
Power control unit coolant ..... 403 Capacity................................ 534
Checking............................... 403
Preparing and checking before winter ...................... 316
Power outlets ........................... 354
Power steering (Electric power steering) ...... 292 Warning light......................... 458
Power switch ........................... 229
N
O
P
*: Refer to “Navigation and Multimedia System Owner’s Manual”