2016 TOYOTA HIGHLANDER HYBRID radiator

5257-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
●The needle of the engine coolant temperature gauge ( P. 103)
enters the red zone or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
● “Hybrid System Overh eat” is shown on the multi-information dis-
play.
● Steam comes out from under the hood.
■If the needle of the engine coolant temperature gauge enters
the red zone
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

5267-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
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

5277-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_HV_U (OM48F12U)■
If “Hybrid System Overheat” is shown on the multi-information
display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has
cooled down, inspect the
hoses and radiator core
(radiator) for any leaks.Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.Reservoir
“FULL”
“LOW”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and check the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
Have the vehicle in spected at the nearest Toyota dealer.
1
2
3
1
2
4
1
2
3
5
6

5287-2. Steps to take in an emergency
HIGHLANDER_HV_U (OM48F12U)
■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.

602Alphabetical index
HIGHLANDER_HV_U (OM48F12U)
Power windows........................ 179Door lock linked
window operation ............... 181
Jam protection function......... 180
Operation .............................. 179
Window lock switch............... 180
Pre-Collision System (PCS) ...................................... 300
Function ................................ 300
PCS OFF switch ................... 301
Warning light ......................... 462
Radar cruise control (dynamic radar cruise control) ............. 271
Radiator .................................... 407
Radio
*
Rear automatic air conditioning system ............. 335
Rear personal lights ................ 342
Wattage ................................ 543
Rear seat .................................. 158 Adjustment ............................ 158
Folding down ................ 160, 162
Rear seat entertainment system
*
Rear side marker lights ........... 244 Light switch ........................... 244
Replacing light bulbs............. 438
Wattage ................................ 543
Rear sunshade ......................... 359
Rear turn signal lights............. 242 Replacing light bulbs............. 438
Turn signal lever ................... 242
Wattage ................................ 543
Rear view mirror
Inside rear view mirror .......... 175
Outside rear view mirrors...... 177
Rear view monitor system
*
Rear window defogger ............ 330
Rear window wiper .................. 259 Refueling .................................. 261
Capacity................................ 535
Fuel types ............................. 535
If the fuel filler door cannot be opened .............. 264
Opening the fuel tank cap..... 263
Replacing Electronic key battery ........... 432
Fuses .................................... 434
Light bulbs ............................ 438
Tires...................................... 490
Reporting safety defects for U.S. owners...................... 574
Resetting the message
indicating maintenance is
required.................................. 390
Road accident cautions ............ 89
Roof rails .................................. 208
R