check engine TOYOTA AVALON 2020 (in English) Service Manual

4607-2. Steps to take in an emergency
■Tr u n k
Turn the mechanical key clock-
wise to open.
Ensure that the shift lever is in P and firmly depress the brake
pedal.
Touch the Toyota emblem side
of the electronic key to the
engine switch.
When the electronic key is
detected, a buzzer sounds and the
engine switch will turn to IGNITION
ON mode.
When the smart key system is
deactivated in customization set-
ting, the engine switch will turn to
ACCESSORY mode.
Firmly depress the brake pedal and check that is displayed
on the multi-information display.
Press the engine switch shortly and firmly.
In the event that the engine still cannot be started, contact your Toyota
dealer.
Starting the engine
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4617-2. Steps to take in an emergency
7
When trouble arises
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when
stopping the engine.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommende d that the
electronic key battery be replaced immediately when the battery is depleted.
( P. 414)
■ Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time t he switch is
pressed. ( P. 185)
■ When the electronic key does not work properly
●Make sure that the smart key system has not been deactivated in the cus-
tomization setting. If it is off, turn the function on.
(Customizable features: P. 497)
● Check if battery-saving mode is set. If it is set, cancel the f unction.
( P. 136)
WARNING
■ When using the mechanical key and operating the power windows o r
moon roof
Operate the power window or moon roof after checking to make su re that
there is no possibility of any passenger having any of their body parts
caught in the window or moon roof. Also, do not allow children to operate
the mechanical key. It is possible for children and other passe ngers to get
caught in the power window or moon roof.
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4677-2. Steps to take in an emergency
7
When trouble arises
The coolant level is satisfactory if it is between the “F” and “L” lines
on the reservoir.
Reservoir
“F” line
“L” line
Radiator cap
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the ai r conditioning system on to check
that the radiator cooling fan operates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fan is operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning
system on and off repeatedly. (The fan may not operate in freez ing tem-
peratures.)
If the fan is not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan is operating:
Have the vehicle ins pected at the nearest Toyota dealer.
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4758-1. Specifications
8
Vehicle specifications
*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. Warm up and turn off the engine, wait more than 5 minutes,
and check the oil level on the dipstick.
■
Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to sat -
isfy the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However,
it must be replaced with SAE 0W-
20 at the next oil change.
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows cold
startability. Oils with a lower value before the W allow for ea sier starting of
the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the oil when the
oil is at high temperature. An oil with a higher viscosity (one with a higher
value) may be better suited if the vehicle is operated at high speeds, or
under extreme load conditions.
Lubrication system
Oil capacity
(Drain and refill ―
reference
*)
With filter
Without filter
5.7 qt. (5.4 L, 4.8 Imp. qt.)
5.6 qt. (5.3 L, 4.7 Imp. qt.)
Outside temperature

4778-1. Specifications
8
Vehicle specifications
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Toyota dealer.
Electrical system
Battery
Specific voltage reading at
68 F (20 C):12.3 V or higher
If the voltage is lower than the standard
value, charge the battery.
(When checking the voltage, after turning
the engine switch off, wait for 30 seconds
with the high beam headlights illuminated,
then turn the high beam headlights off and
check the voltage.)
Charging rates5 A max.
Automatic transaxle
Fluid capacity*7.9 qt. (7.5 L, 6.6 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of the transmission accompanied by
vibration and, ultimately, damage to the vehicle’s transmission .

522What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys can be
made by your Toyota dealer. ( P. 123)
●If you lose your electronic keys, the risk of vehicle theft inc reases signifi-
cantly. Contact your Toyota dealer immediately. ( P. 124)
●Is the key battery weak or depleted? (P. 414)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 185)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
●The function may not operate properly due to the condition of t he radio
wave. ( P. 123, 137)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. ( P. 128)
●The function to prevent the electronic key from being left insi de the trunk
will operate and you can open the trunk as usual. Take the key out from the
trunk. ( P. 132)
If you have a problem, check the following before contacting
your Toyota dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
The trunk lid is closed with the electronic key left inside

524What to do if... (Troubleshooting)
●The seat belt reminder light is flashing
Are the driver and the passenger wearing the seat belts? (P. 433)
●The parking brake indicator is on
Is the parking brake released? (P. 196)
Depending on the situation, other types of warning buzzer may also sound.
( P. 430, 440)
●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 80)
Do one of the following to stop the alarm: • Unlock the doors.
• Open the trunk using the entry function or wireless remote con trol.
• Turn the engine switch to ACCESSORY or IGNITION ON mode, or st art
the engine.
●Is the message displayed on the multi-information display?
Check the message on the multi-information display. ( P. 440)
●When a warning light turns on or a warning message is displayed , refer to
P. 430, 440.
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 445)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 469)
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds w hen leaving the vehicle
A warning light turns on or a warning message is displayed
When a problem has occurred If you have a flat tire
The vehicle becomes stuck

527Alphabetical index
Child safety ................................ 55Airbag precautions .................. 39
Battery precautions ....... 391, 465
Child restraint system ............. 56
How your child should wear the seat belt .......................... 32
Installing child restraints ......... 60
Moon roof precautions .......... 167
Power window lock switch .... 160
Power window precautions ... 163
Rear door child-protectors .... 128
Removed electronic key battery precautions ............. 415
Seat belt extender precautions ........................... 35
Seat belt precautions .............. 34
Seat heater precautions........ 329
Trunk precautions ................. 133
Child-protectors....................... 128
Cleaning ........................... 366, 369
Aluminum wheels.................. 367
Exterior ................................. 366
Interior................................... 369
Seat belts .............................. 370
Coat hooks ............................... 356
Condenser ................................ 388
Console box ............................. 336
Consumption
screen............................... 97, 116
Coolant Capacity ................................ 476
Checking ............................... 387
Preparing and checking before winter....................... 316
Cooling system ........................ 387 Engine overheating ............... 466
Cornering lights ....................... 203
Cruise control
Dynamic radar cruise control with full-speed range .......... 248 Cup holders ............................. 338
Curtain shield airbags............... 37
Customizable features ............ 497
Customized mode ................... 305
Daytime running light
system.................................... 204
Defogger Outside rear view mirrors ..... 324
Rear window ......................... 324
Windshield ............................ 324
Dimensions .............................. 472
Dinghy towing.......................... 183
Display Dynamic radar cruise control
with full-speed range .......... 248
LDA (Lane Departure Alert with steering control) .......... 243
Multi-information display ......... 93
Warning messages ............... 440
Do-it-yourself maintenance .... 379
Door courtesy lights
Location ................................ 332
Wattage ................................ 480
Door lock Doors .................................... 125
Smart key system ................. 125
Wireless remote control ........ 125
Doors ........................................ 125 Automatic door locking
and unlocking systems ....... 128
Door lock .............................. 127
Outside rear view mirrors ..... 157
Rear door child-protector ...... 128
Side doors ............................ 125
Side windows........................ 160
Drive-Start Control .................. 171
Driver’s seat belt reminder light ........................ 433
D

529Alphabetical index
Engine coolantCapacity ................................ 476
Checking ............................... 387
Preparing and checking before winter....................... 316
Engine coolant temperature gauge........................................ 90
Engine immobilizer system ...... 77
Engine oil Capacity ................................ 475
Checking ............................... 384
Preparing and checking before winter....................... 316
Engine switch .......................... 184
Enhanced VSC ......................... 309
Entune Audio Plus
*
Entune Premium Audio*
EPS (Electric Power Steering)...... 310
Warning light ......................... 432
Event data recorder (EDR) ........................................ 11 Flat tire ..................................... 445
Floor mats .................................. 26
Fluid
Automatic transaxle .............. 477
Brake .................................... 478
Washer ................................. 392
Front interior light ................... 333
Front passenger occupant
classification system .............. 50
Front passenger’s seat belt
reminder light ........................ 433
Front personal lights............... 333
Front seat heaters ................... 329
Front seats ............................... 142 Adjustment............................ 142
Cleaning ............................... 369
Correct driving posture ........... 28
Driving position memory ....... 146
Head restraints ..................... 151
Power easy access system .......... ...................... 146
Seat heaters ......................... 329
Seat ventilators ..................... 329
Front side marker lights Light switch ........................... 202
Replacing light bulbs ............ 419
F
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

538Alphabetical index
Vanity lights ............................. 342Wattage ................................ 480
Vanity mirrors .......................... 342 Vanity lights .......................... 342
Vehicle data recording ................ 9
Vehicle identification number ................................... 473
Vehicle Stability Control (VSC) ...................................... 309
VSC
(Vehicle Stability Control) .... 309
Warning buzzers Approach warning ................. 256
Brake system ....... ................. 430
Downshifting ......................... 192
Electric power steering system ......... ....................... 432
Intuitive parking assist .......... 279
Lane departure alert function ............................... 239
Light reminder ....................... 205
Open door ............................. 129
Open hood ............................ 381
Open moon roof .................... 166
Open trunk ............................ 132
Parking brake........................ 432
Pre-collision warning............. 226
Seat belt reminder ................ 433
Vehicle sway warning ........... 240 Warning lights ........................... 85
ABS ...................................... 431
Brake hold operated indicator.............................. 432
Brake Override System ........ 431
Brake system ....... ................. 430
Charging system................... 430
Drive-Start Control ................ 431
Driver’s seat belt reminder ............................. 433
Electric power steering ......... 432
Front passenger’s seat belt reminder ...................... 433
High coolant temperature ..... 430
ICS OFF indicator ................. 433
LDA indicator ........................ 432
Low engine oil pressure........ 430
Low fuel level ........................ 433
Malfunction indicator lamp .... 431
Master warning light ............. 433
Parking brake indicator ......... 432
PCS warning light ................. 432
Rear passengers’ seat belt reminder light ..................... 433
Seat belt reminder light......... 433
Slip indicator ......................... 433
SRS ...................................... 431
Tire pressure ........................ 434
Warning messages.................. 440
Washer ..................................... 210 Checking............................... 392
Preparing and checking
before winter ...................... 316
Switch ................................... 210
V
W