coolant temperature TOYOTA HIGHLANDER 2015 XU50 / 3.G Owners Manual

952. Instrument cluster
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Instrument cluster
HIGHLANDER_U (OM48E98U)
Tachometer
Displays the engine speed in revolutions per minute.
Multi-information display
Presents the driver with a variety of driving-related data.
Speedometer
Fuel gauge
Trip meter reset knob
Switches the trip information.
Outside temperature
Odometer and trip meter display
Shift position and shift range
Displays the selected shift position or selected shift range. (P. 234)
Meter panel lights control button
Engine coolant temperature gauge
Displays the engine coolant temperature.
Switches between the trip meter
“A” and “B” displays. When the trip
meter is displayed, pressing and
holding the knob will reset the trip
meter.
Changing the trip meter display
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962. Instrument cluster
HIGHLANDER_U (OM48E98U)
The brightness of the meter panel lights can be adjusted.
Pressing the button will adjust the
brightness of the meter panel
lights.
The brightness level of the meters
when the surroundings are bright
(day mode) and dark (night mode)
can be adjusted individually. How-
ever, when in day mode, adjusting
the brightness level will also
change the brightness level of
night mode.
■ The meters and display illuminate when
Vehicles without a smart key system
The engine switch is in the “ON” position.
Vehicles with a smart key system
The engine switch is in IGNITION ON mode.
■ Outside temperature display
In the following situations, the correct outside temperature may not be dis-
played, or the display may take longer than normal to change.
●When stopped, or driving at low speeds (less than 12 mph [20 km/h])
● When the outside temperature has changed suddenly (at the entrance/exit
of a garage, tunnel, etc.)
Instrument panel light control
NOTICE
■To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant 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. 626)

2194-1. Before driving
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Driving
HIGHLANDER_U (OM48E98U)
●Due to the added load of the trailer, your vehicle’s engine may over-
heat on hot days (at temperatures over 85 F [30C]) when driving
up a long or steep grade. If t he engine coolant temperature gauge
indicates overheating, immediately turn off the air conditioning (if in
use), pull your vehicle off the road and stop in a safe spot.
(  P. 626)
● Always place wheel blocks under both the vehicle’s and the trailer’s
wheels when parking. Apply the pa rking 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’s and
trailer’s 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 engine.
● When restarting after parking on a slope:
With the transmission in P, start the engine. Be sure to keep the
brake pedal depressed.
Shift into a forward gear. If reversing, shift into R.
Release the parking brake and brake pedal, and slowly pull or
back away from the wheel blocks. Stop and apply the brakes.
Have someone retrieve the blocks.
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5087-3. Do-it-yourself maintenance
HIGHLANDER_U (OM48E98U)
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31 F [-35 C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44 F [-42 C])
For more details about coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock
and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Engine coolant
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5618-2. Steps to take in an emergency
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When trouble arises
HIGHLANDER_U (OM48E98U)
●Fluid leaks under the vehicle.
(Water dripping from the air co nditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points higher
than normal.
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● Engine missing, stumbling or running roughly
● 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, spon gy feeling, pedal almost touches
the floor
If you think something is wrong
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5788-2. Steps to take in an emergency
HIGHLANDER_U (OM48E98U)
Color display only
Indicates that the engine coolant temperature is
too highA buzzer also sounds.
 P. 626
Color display onlyIndicates a malfunction in the vehicle’s charging
system.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
Color display only
(If equipped)
Indicates that the radar sensor is dirty or covered
with ice A buzzer also sounds.
 Clean the sensor.
Color display only
(If equipped)
Indicates that the dynamic radar cruise control
system is unable to judge vehicle-to-vehicle dis-
tance
A buzzer also sounds.
 Turn off snow mode.
If the windshield wipers are on, turn them
off or set them to a mode other than high
speed wiper operation.
(If equipped)
Indicates that the LDA (Lane Departure Alert)
system is suspended (The camera sensor tem-
perature is higher than the operation temperature
range)
A buzzer also sounds.
 Restart the LDA after driving for a while.
(If equipped)
Indicates that a Blind Spot Monitor sensor or the
surrounding area on the bumper is dirty or cov-
ered with ice
A buzzer also sounds.
 Clean the sensor and its surrounding area
on the bumper.
Warning messageDetails/Actions

6268-2. Steps to take in an emergency
HIGHLANDER_U (OM48E98U)
●The needle of the engine coolant temperature gauge ( P. 9 4 )
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle sp eed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficient ly, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact your
Toyota dealer.
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL”
“LOW”
Radiator cap
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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6278-2. Steps to take in an emergency
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When trouble arises
HIGHLANDER_U (OM48E98U)
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans oper ate and to check for coolant leaks
from the 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 condition-
ing system on and off repeatedly. (The fans may not operate in freezing
temperatures.)
If the fans are not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fans are operating:
Have the vehicle in spected at the nearest Toyota dealer.
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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.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fans and belts.
● Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
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699Alphabetical index
HIGHLANDER_U (OM48E98U)
Engine....................................... 635“ACC” position ...................... 225
ACCESSORY mode ............. 229
Compartment ........................ 503
Engine switch................ 225, 228
Hood ..................................... 500
How to start the engine......................... 225, 228
Identification number ............ 634
If the engine will not start ...... 615
Ignition switch (engine switch) ........... 225, 228
Overheating .......................... 626
Engine coolant ......................... 508
Capacity ................................ 638
Checking ............................... 508
Preparing and checking before winter....................... 323
Engine coolant temperature gauge........................................ 94
Engine immobilizer system ...... 80
Engine oil ................................. 505 Capacity ................................ 636
Checking ............................... 505
Oil pressure warning light ..... 563
Oil pressure warning message ............................. 579
Preparing and checking before winter....................... 323
Engine switch .................. 225, 228
Enhanced VSC ......................... 298
EPS (Electric Power Steering)...... 299
Function ................................ 299
Warning light ......................... 564
Event data recorder (EDR) ........ 10 Flat tire ..................................... 590
Floor mats .................................. 26
Fluid
Automatic transaxle .............. 639
Brake .................................... 641
Washer ................................. 514
Fog lights ................................. 252 Replacing light bulbs ............ 539
Switch ................................... 252
Wattage ................................ 645
Front automatic air
conditioning system ............. 428
Front door courtesy lights Location ................................ 444
Wattage ................................ 645
Front fog lights ........................ 252 Replacing light bulbs ............ 539
Switch ................................... 252
Wattage ................................ 645
Front manual air
conditioning system ............. 422
Front passenger occupant classification system .............. 53
Front personal lights............... 445 Wattage ................................ 645
Front seats ............................... 155 Adjustment............................ 155
Cleaning ............................... 487
Correct driving posture ........... 28
Driving position memory ....... 164
Head restraints ..................... 168
Seat heaters ......................... 442
Seat position memory ........... 164
Seat ventilators ..................... 442F