2008 TOYOTA HIGHLANDER HYBRID engine coolant

434 4-3. Do-it-yourself maintenance
Radiator and condenserCheck the radiators and condenser and clear any foreign objects.
If either of the above parts are ex tremely dirty or you are not sure of
their condition, have your vehicl e checked by your Toyota dealer.
Brake fluid
■ Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
If the level is low, take your vehi-
cle to a Toyota dealer as soon as
possible. Do not drive your vehi-
cle if the red brake system warn-
ing light is on. Call a Toyota
dealer for assistance.
CAUTION
■When the hybrid system is hot
Do not touch the radiators or condenser as they may be hot and may cause
burns.
■ When the electric cooling fan is operating
Do not touch the engine compartment.
The electric cooling fan may keep rotating for about 3 minutes even after the
“POWER” switch is OFF.
With the “POWER” switch in ON mode, the electric cooling fan may automat-
ically start to run if the air conditioning is on and/or the coolant temperature
is high. Be sure the “POWER” switch is OFF when working near the electric
cooling fan.

488
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Toyota dealer as soon as
possible.
■ Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air cond itioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature g auge needle continually points
higher than normal
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, s pongy feeling, pedal almost
touches the floor

5
When trouble arises
523
5-2. Steps to take in an emergency
If your vehicle overheats
Correction procedures■ 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 condition-
ing system.
Check to see if steam is coming out from the engine area.
If you see steam:
Stop the hybrid system and carefully lift the hood.
If you do not see steam: Leave the hybrid system operating and carefully lift the
hood.
Check if the cooling fans are operating.
If the fans are operating: Wait until the engine coolant temperature gauge begins to
fall and then stop the hybrid system.
If the fans are not operating: Stop the hybrid system immediately and call your Toyota
dealer.
The following may indicate that your vehicle is overheating:
●The needle of the engine coolant temperature gauge enters the
red zone:
The engine may be overheating.
● “Hybrid System Overheat” is shown on the multi-information dis-
play:
The power control unit may be overheating.
Follow the correction procedure as described below.
STEP1
STEP2
STEP3

524 5-2. Steps to take in an emergency
After the hybrid system has
cooled down, check the engine
coolant level and inspect the
cooling system for leaks.Engine coolant reservoir
Radiator
If necessary, add engine coolant
up to the “FULL” line.
Water can be used in an emer-
gency if engine coolant is unavail-
able. ( P. 535)
STEP4
STEP5

526 5-2. Steps to take in an emergency
■Overheating
The following symptoms may occur when your vehicle is overheating:
●Hybrid system output decreases.
● Steam is coming from the engine area.
CAUTION
■To prevent an accident or injury when inspecting under the hood of
your vehicle
● With a hybrid vehicle, there are times when the gasoline engine automati-
cally starts to run or the cooling fans suddenly start to operate. Do not
touch or approach the rotating parts of the belt or fans. Doing so may lead
to fingers, clothes or tools getting caught, resulting in an accidental injury.
● Do not loosen the coolant reservoir cap while the hybrid system and radia-
tor are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
■When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem too quickly can cause damage to the hybrid system.

535
6-1. Specifications
6
Vehicle specifications
Cooling system
Capacity (Reference)
Gasoline engine
Power control unit Without rear air conditioning system
11.2 qt. (10.6 L, 9.3 Imp.qt.)
With rear air conditioning system
13.5 qt. (12.8 L, 11.3 Imp.qt.)
3.6 qt. (3.4 L, 3.0 Imp.qt.)
Coolant type Use either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.

553
6-1. Specifications
6
Vehicle specifications
Warning: The temperature grades for this tire are established for a
tire that is properly inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either sepa-
rately or in combination, can caus e heat buildup and possible tire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold inflated
pressure to which a
tire may be inflated, s hown on the sidewall of
the tire
Recommended infla-
tion pressure Cold tire inflation pressure recommended by a
manufacturer
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight

570 Alphabetical index
DoorsDoor glasses ......................... 110
Door lock ..................... 44, 65, 74
Side mirrors ........................... 108
Driver's seat belt reminder
light ......................................... 494
Driving Break-in tips .......................... 165
Correct posture ..................... 128
Procedures ............................ 164
Winter driving tips.................. 230
DVD player ................................ 308
“ECON” switch ......................... 181
Eco Driving Mode..................... 181
Electric power steering ........... 215
Electronic key If your electronic key battery is discharged .......................... 517
Emergency, in case of If the back door opener is inoperative ............................79
If the electronic key does not operate properly.................. 517
If the hybrid system will
not start ............................... 513
If the shift lever cannot be shifted from P...................... 515
If the vehicle has discharged 12-volt battery ..................... 519
If the warning buzzer
sounds ................................ 491
If the warning light turns on ........................................ 491
If the warning message is displayed............................. 500
If you have a flat tire ............. 501
If you lose your keys ............. 516 If you think something is
wrong .................................. 488
If your vehicle becomes stuck ................................... 527
If your vehicle needs to be
towed .................................. 482
If your vehicle overheats ....... 523
Engine
Compartment ........................ 424
Engine switch ........................ 174
Hood ..................................... 420
How to start the hybrid system ..................... 174
Identification number............. 531
If the hybrid system will
not start............................... 513
Ignition switch ....................... 174
Overheating .......................... 523
“POWER” switch ................... 174
Engine compartment cover .... 425
Engine/power control unit coolant
Capacity ................................ 535
Checking ............................... 431
Preparing and checking before winter .................................. 230
Engine coolan t temperature
gauge ...................................... 184
Engine oil Capacity ................................ 534
Checking ............................... 427
Preparing and checking before winter .................................. 230
Engine oil maintenance data ......................................... 429
Engine switch........................... 174
EPS............................................ 215
EV-Drive Mode ......................... 178
Event data recorder ................. 489
E