2010 TOYOTA HIGHLANDER HYBRID coolant temperature

191
2
When driving
2-2. Instrument cluster
Gauges and meters
The following gauges and meters illuminate when the “POWER”
switch is in ON mode.Power meter
Displays the instantaneous output from the hybrid system in approxi-
mate kilowatts.
Engine coolant temperature gauge
Displays the engine coolant temperature.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Speedometer
Displays the vehicle speed.
Odometer/trip meter switching and trip meter resetting button
Switches between odometer and trip meter displays. Pushing and hold-
ing the button will reset the trip meter when the trip meter is being dis-
played.

247
2-5. Driving information
2
When driving
●
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 vehicles. Passing requires consider-
able distance. After passing 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. 534)
● 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

443
4-3. Do-it-yourself maintenance
4
Maintenance and care
Radiator and condenser
Check the radiators and condenser, and clear any foreign objects.
If either of the above parts are extremely 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 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 or radiator grille.

5
When trouble arises
499
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

534
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. 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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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

581
Alphabetical index
Doors
Door glasses ........................ 116
Door lock .................... 44, 65, 74
Side mirrors .......................... 114
Driver's seat belt reminder
light ........................................ 505
Driving Break-in tips ......................... 171
Correct posture..................... 134
Procedures ........................... 170
Winter driving tips ................. 238
DVD player ............................... 318
“ECON” switch ........................ 187
Eco Driving Mode .................... 187
Electric power steering........... 222
Electronic key If your electronic key battery is discharged ...................... 528
Emergency flashers Switch ................................... 492
Emergency, in case of
If the back door opener is inoperative ........................... 81
If the electronic key does
not operate properly ........... 528
If the hybrid system will not start .............................. 524
If the shift lever cannot be shifted from P ..................... 526
If the vehicle has a
discharged 12-volt
battery ................................ 530
If the warning buzzer
sounds ............................... 502
If the warning light turns on ....................................... 502
If the warning message is displayed ............................ 511
If you have a flat tire ............ 512
If you lose your keys............. 527
If you think something is
wrong ................................. 499 If your vehicle becomes
stuck ...................................538
If your vehicle needs to be towed ..................................493
If your vehicle overheats .......534
Engine Compartment ........................434
Engine switch ........................180
Hood......................................430
How to start the hybrid system......................180
Identification number .............541
If the hybrid system will not start ...............................524
Ignition switch........................180
Overheating...........................534
Power switch .........................180
Engine compartment cover.....435
Engine/power control unit coolant
Capacity ................................545
Checking ...............................440
Preparing and checking before winter .......................238
Engine coolan t temperature
gauge ......................................191
Engine oil Capacity ................................544
Checking ...............................437
Preparing and checking before winter .......................238
Engine oil maintenance
data .........................................439
Engine switch ...........................180
EPS ............................................222
EV-Drive Mode..........................184
Event data recorder .................500
E

589
What to do if...
What to do if...
A tire puncturesP. 512If you have a flat tire
The hybrid system does not
startP. 524If the hybrid system will not start
P. 126Immobilizer system
P. 530If the 12-volt battery is discharged
The shift lever cannot be
moved outP. 526If 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. 534If your vehicle overheats
The key is lostP. 527If you lose your keys
The 12-volt battery runs outP. 530If the 12-volt battery is discharged
The doors cannot be lockedP. 7 4Side doors
P. 7 8Back door
The horn begins to soundP. 130Alarm
The vehicle is stuck in
mud or sandP. 538If the vehicle becomes stuck