engine overheat TOYOTA HIGHLANDER HYBRID 2009 XU40 / 2.G Owners Manual

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4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 412
Cleaning and protecting the vehicle interior............. 415
4-2. Maintenance Maintenance requirements ..................... 418
General maintenance.......... 420
Emission inspection and maintenance (I/M)
programs........................... 423
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ....................... 424
Hood ................................... 428
Positioning a floor jack ........ 430
Engine compartment ........... 432
Tires .................................... 447
Tire inflation pressure ......... 455
Wheels ................................ 459
Air conditioning filter............ 461
Electronic key battery.......... 464
Checking and replacing fuses ................................. 467
Light bulbs........................... 478 5-1. Essential information
Emergency flashers............ 490
If your vehicle needs to be towed........................... 491
If you think something is wrong ............................ 497
Event data recorder ............ 498
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds... .......................... 500
If a warning message is displayed .......................... 509
If you have a flat tire ........... 510
If the hybrid system will not start ............................ 522
If the shift lever cannot be shifted from P ................... 524
If you lose your keys........... 525
If the electronic key does not operate properly ......... 526
If the 12-volt battery is discharged........................ 528
If your vehicle overheats .... 532
If the vehicle becomes stuck ................................. 536
4Maintenance and care5When trouble arises

173
2-1. Driving procedures
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When driving
CAUTION
●
Do not under any circumstances shift the shift lever to P, R or N while the
vehicle is moving.
Doing so can cause significant damage to the transmission system and
may result in a loss of vehicle control.
● Do not shift the shift lever to N while the vehicle is moving.
Doing so may cause the engine brake to not operate properly and lead to
an accident.
● Do not turn the hybrid system off while driving.
The power steering system will not operate properly if the hybrid system is
off.
● Use engine braking to maintain a safe speed when driving down a steep
hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( →P. 184)
● When stopped on an inclined surface, use the brake pedal and parking
brake to prevent the vehicle from rolling backward or forward and causing
an accident.
● Do not adjust the position of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control that can cause accidents
that may result in death or serious injury.
● Always check that all passengers' arms, heads or other parts of their bod-
ies are not outside the vehicle, as this may result in death or serious injury.
● Do not drive in excess of the speed limit. Even if the legal speed limit per-
mits it, do not drive over 85 mph (140 km/h) unless your vehicle has high-
speed capability tires. Driving over 85 mph (140 km/h) may result in tire
failure, loss of control and possible injury. Be sure to consult a tire dealer
to determine whether the tires on your vehicle are high-speed capability
tires or not before driving at such speeds.
■ When driving on slippery road surfaces
●Sudden braking, acceleration and steering may cause tire slippage and
reduce your ability to control the vehicle, resulting in an accident.

190 2-2. Instrument cluster
Instrument panel light controlThe brightness of the instrument panel lights can be adjusted. Brighter
Darker
When the headlight switch is
turned on, the brightness will
be reduced slightly unless the
control dial is turned fully up.
Odometer/Trip meterOdometer
Displays the total distance the vehicle has been driven.
Trip meter
Displays the distance the v ehicle has been driven since the
meter was last reset. Trip meters A and B can be used to
record and display differ ent distances independently.
■Power meter “CHARGE” zone
The “CHARGE” zone indicates regeneration* status. Regenerated energy
will be used to charge the battery.
*: When used in this manual, “regeneration” refers to the conversion of
energy created by the movement of the vehicle into electrical energy.
NOTICE
■To prevent damage to the engine and its components
The gasoline engine may be overheating if the temperature gauge is in the
red zone (H). In this case, immediately stop the vehicle in a safe place, and
check the engine after it has cooled completely. (
→P. 532)

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2-5. Driving information
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When driving
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Note that when making a turn, th e trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by making
a larger than normal turning radius.
● Crosswinds and rough roads will adversely affect handling of your
vehicle and trailer, causing sway . Periodically check the rear to
prepare for being passed by large trucks or buses, which may
cause your vehicle and trailer to sway. If swaying occurs, firmly grip
the steering wheel, reduce speed immediately but gradually, and
steer straight ahead. Never increase speed. If you make no
extreme correction with the stee ring or brakes, your vehicle and
trailer will stabilize.
● Take care when passing other vehi cles. Passing requires consider-
able distance. After pass ing a vehicle, do not forget the length of
your trailer, and be sure you hav e plenty of room before changing
lanes.
● Due to the added load of the trailer, your vehicle's hybrid system
may overheat on hot days (at temperatures over 85°F [30°C])
when driving up a long or steep grade. If the engine coolant tem-
perature gauge indicates overheati ng, immediately turn off the air
conditioning (if in use), pull your vehicle off the road and stop in a
safe spot. ( →P. 532)
● Always place wheel blocks under both the vehicle and the trailer
wheels when parking. Apply the parking brake firmly, and put the
transmission in P. Avoid parking on a slope, but if unavoidable, do
so only after performing the following:
Apply the brakes and keep them applied.
Have someone place wheel blocks under both the vehicle and
trailer wheels.
When the wheel blocks are in pl ace, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the hybrid system.
STEP1
STEP2
STEP3
STEP4
STEP5

532
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 plac e 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. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
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

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When trouble arises
535
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
●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, caus-
ing serious injury such as burns.
● 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.

580 Alphabetical index
“ECON” switch ......................... 185
Eco Driving Mode..................... 185
Electric power steering ........... 220
Electronic keyIf your electronic key battery is
discharged .......................... 526
Emergency flashers Switch.................................... 490
Emergency, in case of If the back door opener is inoperative ............................81
If the electronic key does not operate properly.................. 526
If the hybrid system will
not start ............................... 522
If the shift lever cannot be shifted from P...................... 524
If the vehicle has a discharged 12-volt
battery ................................. 528
If the warning buzzer sounds ................................ 500
If the warning light turns
on ........................................ 500
If the warning message is displayed............................. 509
If you have a flat tire ............. 510
If you lose your keys ............. 525
If you think something is wrong .................................. 497
If your vehicle becomes stuck ................................... 536
If your vehicle needs to be towed .................................. 491
If your vehicle overheats ....... 532 Engine
Compartment ........................ 432
Engine switch ........................ 178
Hood ..................................... 428
How to start the
hybrid system ..................... 178
Identification number............. 539
If the hybrid system will not start............................... 522
Ignition switch ....................... 178
Overheating .......................... 532
Power switch ......................... 178
Engine compartment cover .... 433
Engine/power control unit coolant Capacity ................................ 543
Checking ............................... 439
Preparing and checking before winter .................................. 236
Engine coolan t temperature
gauge ...................................... 189
Engine oil Capacity ................................ 542
Checking ............................... 435
Preparing and checking before winter .................................. 236
Engine oil maintenance
data ......................................... 437
Engine switch........................... 178
EPS............................................ 220
EV-Drive Mode ......................... 182
Event data recorder ................. 498E

583
Alphabetical index
Maintenance
Do-it-yourself
maintenance ...................... 424
General maintenance ........... 420
Maintenance data ................. 538
Maintenance requirements ... 418
Meter Instrument panel light
control ................................ 190
Meters .................................. 189
Mirrors
Conversation mirror .............. 388
Inside rear view mirror .......... 109
Side mirror heaters ............... 275
Side mirrors .......................... 111
Vanity mirrors ....................... 387
Moon roof................................. 115
MP3 disc................................... 295
Multi-information display ................................... 195
Off-road precautions............... 226
Odometer ................................. 189
Oil Engine oil.............................. 435
Opener Back door ............................... 78
Fuel filler door....................... 118
Glass hatch ............................ 84
Hood ..................................... 428
Outside rear view mirrors
Adjusting and folding ............ 111
Outside temperature display ................................... 195
Overhead console ................... 375
Overheating, Hybr id system .. 532 Parking brake ...........................187
Parking lights
Replacing light bulbs .............478
Switch....................................205
Wattage .................................551
Personal/interior lights Switch....................................370
Wattage .................................551
Power outlet .............................389
Power switch ............................178
Power windows ........................113M
O
P

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What to do if...
What to do if...
A tire puncturesP. 510If you have a flat tire
The hybrid system does not
startP. 522If the hybrid system will not start
P. 123Immobilizer system
P. 528If the 12-volt battery is discharged
The shift lever cannot be
moved outP. 524If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 532If your vehicle overheats
The key is lostP. 525If you lose your keys
The 12-volt battery runs outP. 528If the 12-volt battery is discharged
The doors cannot be lockedP. 7 4Side doors
P. 7 8Back door
The horn begins to soundP. 127Alarm
The vehicle is stuck in
mud or sandP. 536If the vehicle becomes stuck