overheating TOYOTA AVALON HYBRID 2020 Owners Manual (in English)

1012. Instrument cluster
2
Instrument cluster
■Engine speed
On hybrid vehicles, engine speed is precisely controlled in ord er to help
improve fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may dif fer even
when vehicle operation and driving conditions are the same.
■ Outside temperature display
In the following situations, the correct outside temperature ma y not be dis-
played, or the display may take longer than normal to change:
● When stopped, or driving at low speeds (less than 16 mph [25 km/h])
● When the outside temperature has changed suddenly (at the entra nce/exit
of a garage, tunnel, etc.)
● When “ ” or “E” is displayed, the system may be malfunctioning.
Take your vehicle to your Toyota dealer.
NOTICE
■ To prevent damage to the engine and its components
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. 492)

1884-1. Before driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When the vehicle is parked
● Do not leave a door or window open if the curved glass is coate d with a
metallized film such as a silver-colored one. Reflected sunligh t may cause
the glass to act as a lens, causing a fire.
● Always apply the parking brake, shift the shift lever to P, stop the hybrid
system and lock the vehicle.
Do not leave the vehicle unattended while the “READY” indicator is illumi-
nated.
If the vehicle is parked with the shift lever in P but the park ing brake is not
set, the vehicle may start to move, possibly leading to an acci dent.
● Do not touch the exhaust pipes while the “READY” indicator is i lluminated
or immediately after turning the hybrid system off.
Doing so may cause burns.
■ When taking a nap in the vehicle
Always turn the hybrid system off. Otherwise, if you accidentally move the
shift lever or depress the accelerator pedal, this could cause an accident or
fire due to hybrid system overheating. Additionally, if the vehicle is parked in
a poorly ventilated area, exhaust gases may collect and enter the vehicle,
leading to death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this ma y cause
one side of the vehicle to brake differently than the other sid e. Also, the
parking brake may not securely hold the vehicle.
● If the electronically controlled brake system does not operate, do not fol-
low other vehicles closely and avoid hills or sharp turns that require brak-
ing.
In this case, braking is still possible, but the brake pedal sh ould be
depressed more firmly than usual. Also, the braking distance wi ll increase.
Have your brakes fixed immediately.
● The brake system consists of 2 or more individual hydraulic systems; if
one of the systems fails, the other(s) will still operate. In this case, the
brake pedal should be depressed more firmly than usual and the braking
distance will increase. Have your brakes fixed immediately.

1994-2. Driving procedures
4
Driving
■Steering lock
After turning the power switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function . Operating the
power switch again automatically cancels the steering lock.
■ When the steering lock cannot be released
■ Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the hybrid system is turned on and off repeatedly in a short period
of time. In this case, refrain from operating the hybrid system . After about 10
seconds, the steering lock motor will resume functioning.
■ When a message requesting the smart key system be inspected is dis-
played on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even a fter perform-
ing the proper procedures for starting the vehicle, contact you r Toyota dealer
immediately.
■ If the hybrid system is malfunctioning
P. 80
■ If the electronic key battery is depleted
P. 439
■ Operation of the power switch
●If the switch is not pressed shortly and firmly, the power switch mode may
not change or the hybrid system may not start.
● If attempting to restart the hybrid system immediately after tu rning the power
switch off, the hybrid system may not start in some cases. After turning the
power switch off, wait a few seconds before restarting the hybrid system.
■ If the smart key system has been d eactivated in a customized setting
P. 482 A message informing the driver that the
steering wheel is locked will be displayed
on the multi-information display.
Check that the shift lever is set in P. Press
the power switch while turning the steer-
ing wheel left and right.

2144-2. Driving procedures
■Parking the vehicle
P. 182
■ Parking brake operation
●When the power switch is not in ON mode, the parking brake cannot be
released using the parking brake switch.
● When the power switch is not in ON mode, automatic mode (automa tic
brake setting and releasing) is not available.
■ Automatic release function
The parking brake is automatica lly released when slowly depress the acceler-
ator pedal.
The parking brake will be released automatically under the foll owing condi-
tions:
● The driver’s door is closed.
● The driver’s seat belt is fastened.
● Shift the shift lever is in a forward or reverse position.
● The malfunction indicator lamp or brake system warning light is not illumi-
nated.
If the automatic release function does not operate, manually re lease the park-
ing brake.
■ If “Parking Brake Temporarily Un available” is displayed on the multi-
information display
If the parking brake is operated repeatedly over a short period of time, the
system may restrict operation to prevent overheating. If this happens, refrain
from operating the parking brake. Normal operation will return after about 1
minute.
■ If “Parking Brake Unavailable” is displayed on the multi-information dis-
play
Operate the parking brake switch. If the message does not disappear after
operating the switch several times, the system may be malfuncti oning. Have
the vehicle inspected by your Toyota dealer immediately.
■ Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■ Parking brake indicator light and parking brake light
●Depending on the power switch mode, the parking brake indicator light and
parking brake light will turn on and stay on as described below:
ON mode: Comes on until the parking brake is released.
Not in ON mode: Stays on for approximately 15 seconds.
● When the power switch is turned off with the parking brake set, the parking
brake indicator light and parking brake light will stay on for about 15 sec-
onds. This does not indicate a malfunction.

2154-2. Driving procedures
4
Driving
■Parking brake engaged warning buzzer
A buzzer will sound if the vehicle is driven with the parking b rake engaged.
“Release Parking Brake” is displayed on the multi-information d isplay.
■ Warning messages and buzzers
Warning messages and buzzers are used to indicate a system malfunction or
to inform the driver of the need for caution. If a warning message is shown on
the multi-information display, read the message and follow the instructions.
■ If the brake system warning light comes on
P. 453
■ Usage in winter time
P. 333
WARNING
■When parking the vehicle
Do not leave a child in the vehicle alone. The parking brake may be
released unintentionally and there is the danger of the vehicle moving that
may lead to an accident resulting in death or serious injury.
■ Parking brake switch
Do not set any objects near the parking brake switch. Objects m ay interfere
with the switch and may lead the parking brake to unexpectedly operate.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift the shift lever to P, set the parking brake
and make sure that the vehicle does not move.
■ When the system malfunctions
Stop the vehicle in a safe place and check the warning messages .
■ When the parking brake cannot be released due to a malfunction
Driving the vehicle with the parking brake set will lead to bra ke components
overheating, which may affect braking performance and increase brake
wear. Contact your Toyota dealer immediately if this occurs.

3274-5. Using the driving support systems
4
Driving
■Automatic reactivation of TRAC and VSC systems
After turning the TRAC and VSC systems off, the systems will be automati-
cally re-enabled in the following situations:
● When the power switch is turned off
● If only the TRAC system is turned off, the TRAC will turn on wh en vehicle
speed increases
If both the TRAC and VSC systems are turned off, automatic re-e nabling will
not occur when vehicle speed increases
■ Secondary Collision Brake operating conditions
The system operates when the SRS airbag sensor detects a collis ion while
the vehicle is in motion.
However, the system does not operate in any of the following si tuations.
● The vehicle speed is below 6 mph (10 km/h)
● Components are damaged
■ Secondary Collision Brake automatic cancellation
The system is automatically canceled in any of the following si tuations.
● The vehicle speed drops below approximately 6 mph (10 km/h)
● A certain amount of time elapses during operation
● The accelerator pedal is depressed a large amount
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the s ystem from
overheating when there is frequent steering input over an exten ded period of
time. The steering wheel may feel heavy as a result. Should thi s occur, refrain
from excessive steering input or stop the vehicle and turn the hybrid system
off. The EPS system should return to normal within 10 minutes.

4927-2. Steps to take in an emergency
■If the needle of the engine coolant temperature gauge enters
the red zone or “Engine Coolant Temp High Stop in a Safe
Place See Owner’s Manual” is shown on the multi-information
display
Stop the vehicle in a safe place and turn off the air condition ing sys-
tem, 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 radiator
core (radiator) for any leaks. Radiator
Cooling fan
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.
● The needle of the engine c oolant temperature gauge (P. 98)
enters the red zone or a loss of hybrid system power is experi-
enced. (For example, the vehic le speed does not increase.)
● “Engine Coolant Temp High Stop in a Safe Place See Owner’s
Manual” or “Hybrid System Overheated Reduced Output Power”
is shown on the multi- information display
● Steam comes out from under the hood.
Correction procedures
1
2
3
1
2

544Alphabetical index
Child safety ................................ 5312-volt battery precautions ................. 413, 490
Airbag precautions .................. 37
Battery precautions ....... 413, 490
Child restraint system ............. 54
How your child should wear the seat belt .......................... 30
Installing child restraints ......... 58
Moon roof precautions .......... 180
Power window lock switch .... 173
Power window precautions ... 176
Rear door child-protectors .... 141
Removed electronic key battery precautions ............. 440
Seat belt extender
precautions ........................... 33
Seat belt precautions .............. 32
Seat heater precautions........ 349
Trunk precautions ................. 146
Child-protectors....................... 141
Cleaning ........................... 386, 389 Aluminum wheels.................. 387
Exterior ................................. 386
Interior................................... 389
Seat belts .............................. 390 Coat hooks ............................... 376
Condenser................................ 408
Console box ............................. 356
Consumption
screen ............................ 106, 128
Coolant Capacity................................ 504
Checking............................... 407
Preparing and checking before winter ...................... 333
Cooling system........................ 407 Hybrid system overheating ........................ 492
Cornering lights....................... 219
Cruise control Dynamic radar cruise control
with full-speed range .......... 264
Cup holders ............................. 358
Curtain shield airbags............... 35
Customizable features ............ 524

547Alphabetical index
EngineACCESSORY mode ............. 197
Compartment ........................ 403
Engine switch........................ 196
Hood ..................................... 401
How to start the hybrid system ......... ....................... 196
Identification number ............ 501
If your vehicle has to be stopped in an
emergency.......................... 447
Ignition switch (power switch) .................... 196
Overheating .......................... 492
Power switch......................... 196
Engine coolant
Capacity ................................ 504
Checking ............................... 407
Preparing and checking before winter....................... 333
Engine coolant temperature gauge........................................ 98
Engine oil Capacity ................................ 503
Checking ............................... 404
Preparing and checking before winter....................... 333
Engine switch .......................... 196
Enhanced VSC ......................... 323
Entune Audio Plus
*
Entune Premium Audio*
EPS
(Electric Power Steering) ..... 324 Warning light......................... 455
EV drive mode ......................... 202
Event data recorder (EDR) ........................................ 10
Exclusive jump starting
terminal .................................. 485
Flat tire ..................................... 469
Floor mats .................................. 24
Fluid Brake .................................... 505
Hybrid transmission .............. 505
Washer ................................. 410
Front interior light ................... 353
Front passenger occupant classification system .............. 48
Front passenger’s seat belt reminder light ........................ 456
Front personal lights............... 353
Front seat heaters ................... 349
Front seats ............................... 155 Adjustment............................ 155
Cleaning ............................... 389
Correct driving posture ........... 26
Driving position memory ....... 159
Head restraints ..................... 164
Power easy access system .......... ...................... 159
Seat heaters ......................... 349
Seat ventilators ..................... 349
F
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

549Alphabetical index
Hybrid system ............................ 75Emergency shut off system .... 80
Energy monitor/consumption screen ........... 128
EV drive mode ...................... 202
High voltage components ....... 79
Hybrid System Indicator........ 100
Hybrid system precautions ..... 79
Hybrid vehicle driving tips ..... 330
If the hybrid system will not start ........................ 480
Overheating .......................... 492
Power (ignition) switch .......... 196
Starting the hybrid system .... 196
Vehicle proximity notification system ......... ......................... 76
Hybrid System Indicator ......... 100
Hybrid transmission ................ 205 If the shift lever
cannot be shifted from P .... 209
Paddle shift switches ............ 208
S mode ................................. 207 I/M test ...................................... 398
ICS (Intelligent Clearance
Sonar)..................................... 300 Warning light......................... 455
Warning messages ............... 311
Identification Engine .................................. 501
Vehicle .................................. 501
Ignition switch (power switch) ....................... 196
Illuminated entry system ........ 354
Immobilizer system ................... 86
Indicators ................................... 95
Initialization Intelligent Clearance Sonar.................................. 311
Items to initialize ................... 533
Tire pressure warning system .... .............. 416
Inside rear view mirror ............ 168
Instrument panel light control ...................................... 99
Intelligent Clearance Sonar (ICS) ............................ 300 Warning light......................... 455
Warning messages ............... 311
Interior lights ........................... 352 Switch ................................... 353
Intuitive parking assist ........... 292I