sensor TOYOTA AVALON 2019 (in English) Repair Manual

3024-5. Using the driving support systems
■Sounds and vibrations caused by the ABS, brake assist, VSC, TRA C and
hill-start assist control systems
● A sound may be heard from the engine compartment when the brake pedal
is depressed repeatedly, when the engine is started or just aft er the vehicle
begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions may occur when the above system s are
operating. None of these indicates that a malfunction has occur red.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard also after the vehicle comes to a s top.
• The brake pedal may pulsate slightly after the ABS is activate d.
• The brake pedal may move down slightly after the ABS is activa ted.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring so und) may be
heard. This does not indicate a malfunction.
■ 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 engine 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 vehicle speed is approximately 6 mph (10 km/h) or more and the airbag
sensor detects a collision. (The Secondary Collision Brake will not operate
when the vehicle speed is below approximately 6 mph [10km/h].)
■ Secondary Collision Brake automatic cancellation
The Secondary Collision Brake is automatically canceled in the following situ-
ations:
●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 this occur, refrain from excessive steering input or sto p the vehicle
and turn the engine off. The EPS system should return to normal within 10
minutes.

4257-2. Steps to take in an emergency
7
When trouble arises
(Flashes)(U.S.A.)
(Flashes)
(Canada)
Parking brake indicator (warning buzzer)*2
It is possible that the parking brake is not fully engaged or
released
 Operate the parking brake once again.
This light comes on when the parking brake is not
released. If the light turns off after the parking brake is ful ly
released, the system is operating normally.
(Flashes)
Brake hold operated indicator Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Red/yellow)
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Amber)
LDA indicator
Indicates a malfunction in the LDA
 When “LDA Unavailable” is displayed on the multi-
information display, turn the LDA system off, drive
the vehicle for a short time, and then turn the LDA
system back on. ( P. 232)
When a message other than above is displayed, fol-
low the instructions displayed in the message.
(Flashes or
illuminates)
PCS warning light
Indicates a malfunction in the PCS (Pre-Collision System)
or that the system is temporarily unavailable due to the
vehicle being extremely hot/cold, or dirt around a front
sensor, etc. ( P. 226, 433)
 Follow the instructions displayed on the multi-infor-
mation display. (P. 226, 433)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P. 227
Warning lightWarning light/Details/Actions

4267-2. Steps to take in an emergency
(If equipped)(Flashes)
ICS OFF indicator
When a buzzer sounds:
Indicates a malfunction in the Intelligent Clearance Sonar
system
 Have the vehicle inspected by your Toyota dealer
immediately.
When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.
 Clear the dirt, etc.
Slip indicator
Indicates a malfunction in:
• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system; or
• The ABS
The light will flash when the VSC or TRAC
system is oper-
ating.
 Have the vehicle inspected by your Toyota dealer
immediately.
Low fuel level warning light
Indicates that remaining fuel is approximately 2.2 gal. (8.3
L, 1.6 Imp. gal.)
*3
Indicates that remaining fuel is approximately 2.4 gal. (9.1
L, 2.0 Imp. gal.)
 Refuel the vehicle.
Driver’s and front passenger’ s seat belt reminder light
(warning buzzer)
*4
Warns the driver and/or front passenger to fasten their
seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.
Rear passengers’ seat belt reminder lights (warning
buzzer)
*5
Warns the rear passengers to fasten their seat belts.
 Fasten the seat belt.
Master warning light (warning buzzer)
A buzzer sounds and the warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.
 P. 433
Warning lightWarning light/Details/Actions

4287-2. Steps to take in an emergency
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (front), side
impact sensors (rear), driver’s seat position sensor, driver’s seat belt buckle
switch, front passenger occupant classification system (ECU and sensors),
“AIR BAG ON” indicator light, “A IR BAG OFF” indicator light, seat belt preten-
sioners, airbags, interconnecting wiring and power sources. (P. 36)
■ Front passenger detection sensor, seat belt reminder and warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.
■ Electric power steering system w arning light (warning buzzer)
When the battery charge becomes insufficient or the voltage tem porarily
drops, the electric power steering system warning light may com e on and the
warning buzzer may sound.

4968-2. Customization
■Automatic light control system (P. 1 9 2 )
■Lights ( P. 192)
*: Except for Canada
■
Intuitive parking assist* (  P. 266)
*: If equipped
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2OO
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
Off
OO60 seconds
90 seconds
12
FunctionDefault settingCustomized setting
Daytime running light
systemOnOff*OO
Welcome lightingOnOff—O
Windshield wiper linked
headlight illuminationOnOff—O
12
FunctionDefault settingCustomized setting
Detection distance of the
front center sensorFarNear—O
Detection distance of the
rear center sensorFarNear—O
12

518What to do if... (Troubleshooting)
●The seat belt reminder light is flashing
Are the driver and the passenger wearing the seat belts? (P. 426)
●The parking brake indicator is on
Is the parking brake released? (P. 186)
Depending on the situation, other types of warning buzzer may also sound.
( P. 423, 433)
●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 72)
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. 433)
●When a warning light turns on or a warning message is displayed , refer to
P. 423, 433.
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 438)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 462)
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

531Alphabetical index
Seats ................................. 132, 134Adjustment .................... 132, 134
Adjustment precautions ................. 133, 135
Child seats/child restraint system installation . ............... 61
Cleaning................................ 363
Driving position memory ....... 136
Folding down the rear seatbacks ........................... 134
Front seat heaters................. 317
Head restraints ..................... 141
Power easy access system ......... ....................... 136
Properly sitting in the seat ...... 26
Rear seat heaters ................. 317
Seat ventilators ..................... 317
Secondary Collis ion Brake ..... 299
Sensor
Automatic headlight system ......... ....................... 194
Automatic High Beam
system ......... ....................... 196
Camera sensor ..................... 210
Inside rear view mirror .......... 146
Intuitive parking assist .......... 266
LDA (Lane Departure Alert with steering control) .......... 228
Radar sensor ........................ 210
Service reminder indicators ................................. 76
Shift lever ................................. 179 Automatic transmission......... 179
If the shift lever cannot be shifted from P ................ 183
S mode ................................. 180
Shift lock system ..................... 182
Side airbags ............................... 35
Side marker lights ................... 192 Light switch ........................... 192
Replacing light bulbs............. 413 Side mirrors ............................. 147
Adjusting and folding ............ 147
BSM (Blind Spot Monitor) ..... 251
Heaters ................................. 312
Side turn signal lights Replacing light bulbs ............ 413
Turn signal lever ................... 185
Smart key system .................... 125 Antenna location ................... 125
Entry functions .............. 115, 121
Starting the engine ............... 174
Snow tires ................................ 307
Spare tire .................................. 438 Inflation pressure .................. 472
Storage location.................... 439
Spark plug ................................ 470
Specifications .......................... 466
Speedometer.............................. 82
Sport mode .............................. 295
Steering lock
Column lock release ............. 176
Steering wheel ......................... 143
Adjustment............................ 143
Heated steering wheel .......... 317
Meter control switches ............ 86
Power easy access system .......... ...................... 136
Stoplights
Replacing light bulbs ............ 413
Storage feature ........................ 323
Storage precautions................ 323
Stuck If the vehicle becomes stuck ................................... 462
Sun visors ................................ 330
Sunshade Roof ...................................... 155
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.