2021 TOYOTA AVALON HYBRID horn

1673-4. Adjusting the steering wheel and mirrors
3
Operation of each component
To sound the horn, press on or
close to the mark.
■The steering wheel can be adjusted when (power type)
The power switch is in ACCESSORY or ON mode.
■Automatic adjustment of the steering position (vehicles with driving
position memory)
A desired steering position can be entered to memory and recalled automati-
cally by the driving position memory system. (P. 159)
■Power easy access system (vehicles with driving position memory)
The steering wheel and driver’s seat move in accordance with power switch
mode and the driver’s seat belt condition. (→P. 159)
Horn
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an acci-
dent, resulting in death or serious injury.
■After adjusting the steering wheel (manual type)
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an
accident, and resulting in death or serious injury. Also, the horn may not
sound if the steering wheel is not securely locked.

2984-5. Using the driving support systems
WARNING
■Sensors
Certain vehicle conditions and the surrounding environment may affect the
ability of a sensor to correctly detect an object. Particular instances where
this may occur are listed below.
●There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)
●The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an
abnormal display, or objects may not be detected.
●The sensor is covered in any way.
●The vehicle is leaning considerably to one side.
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●The vicinity of the vehicle is noisy due to vehicle horns, motorcycle
engines, air brakes of large vehicles, or other loud noises producing ultra-
sonic waves.
●There is another vehicle equipped with parking assist sensors in the vicin-
ity.
●The sensor is coated with a sheet of spray or heavy rain.
●The sensor is drenched with water on a flooded road.
●The vehicle is equipped with a fender pole or wireless antenna.
●Towing eyelets are installed.
●The bumper or sensor receives a strong impact.
●The vehicle is approaching a tall or curved curb.
●The detection range is reduced due to an object such as a sign.
●In harsh sunlight or intense cold weather.
●The area directly under the bumpers is not detected.
●If objects draw too close to the sensor.
●A non-genuine Toyota suspension (lowered suspension, etc.) is installed.
●A backlit license plate is installed.
In addition to the examples above, there are instances in which, because of
their shape, signs and other objects may be judged by a sensor to be closer
than they are.

3094-5. Using the driving support systems
4
Driving
■Situations in which the Intelligent Clearance Sonar function may operate
even if there is no possibility of a collision
In some situations such as the following, the Intelligent Clearance Sonar
function may operate even though there is no possibility of a collision.
●Vehicle surroundings
• When driving toward a banner, flag, low-hanging branch or boom barrier
(such as those used at railroad crossings, toll gates and parking lots).
• When driving on a narrow path surrounded by a structure, such as in a
tunnel or on an iron bridge
• When parallel parking
• When there is a rut or hole in the surface of the road
• When driving on a metal cover (grating), such as those used for drainage
ditches
• When driving on a steep slope
• If a sensor is hit by a large amount of water, such as when driving on a
flooded road
●Weather
• If a sensor is covered with ice, snow, dirt, etc. (when cleared, the system
will return to normal)
• If heavy rain or water strikes a sensor
• When driving in inclement weather such as fog, snow or a sandstorm
●Other ultrasonic waves sources
• When vehicle horns, vehicle detectors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of other vehicles or other devices
which produce ultrasonic waves are near the vehicle
• If a sticker or an electronic component, such as a backlit license plate
(especially fluorescent type), fog lights, a fender pole or wireless antenna
is installed near a sensor • When driving on a narrow road
• When driving on a gravel road or in
an area with tall grass

3114-5. Using the driving support systems
4
Driving
●Other ultrasonic waves sources
• When vehicle horns, vehicle detectors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of other vehicles or other devices
which produce ultrasonic waves are near the vehicle
• If a sticker or an electronic component, such as a backlit license plate
(especially fluorescent type), fog lights, a fender pole or wireless antenna
is installed near a sensor
●Changes in the vehicle posture
• If the vehicle is significantly tilted
• If the front of the vehicle is raised or lowered due to the carried load
• If the orientation of a sensor has been changed due to a collision or other
impact
■If a 12-volt battery terminal has been disconnected and reconnected
The system needs to be initialized.
To initialize the system, drive the vehicle straight ahead for 5 seconds or more
at a speed of approximately 22 mph (35 km/h) or more.
■If “ICS Unavailable” is displayed on the multi-information display and
the ICS OFF indicator is flashing
Initialization may not have been performed after a 12-volt battery terminal
was disconnected and reconnected. Initialize the system. (P. 3 1 1 )
If this message continues to be displayed even after initialization, have the
vehicle inspected by your Toyota dealer.
■If “ICS Unavailable” and “Parking Assist Unavailable Clean Parking
Assist Sensor” are displayed on the multi-information display and the
ICS OFF indicator is flashing
●A sensor may be covered with ice, snow, dirt, etc. In this case, remove the
ice, snow, dirt, etc., from the sensor to return the system to normal. If this
message is shown even after removing dirt from the sensor, or shown when
the sensor was not dirty to begin with, have the vehicle inspected at your
Toyota dealer.
●A sensor may be frozen. Once the ice melts, the system will return to nor-
mal.
●Water may be continuously flowing over the sensor surface, such as in a
heavy rain. When the system determines that it is normal, the system will
return to normal.

4827-2. Steps to take in an emergency
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 485)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system.
(P. 86)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. (P. 483)
●The temperature of the hybrid battery (traction battery) may be
extremely low (below approximately -22°F [-30°C]). (P. 81, 198)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. (P. 487)
●The 12-volt battery terminal connections may be loose or corroded.
(P. 411)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on
the situation. Check the following and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. (P. 196)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

4837-2. Steps to take in an emergency
7
When trouble arises
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. (P. 487)
●One or both of the 12-volt battery terminals may be disconnected.
(P. 411)
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
When the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the power
switch is functioning normally.
Do not use this starting procedure except in case of emergency.
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer.
The interior lights and headlights do not turn on, or the horn
does not sound.
Emergency start function
1
2
3
4

542What to do if... (Troubleshooting)
●The seat belt reminder light is flashing
Are the driver and the passenger wearing the seat belts? (P. 458)
●The parking brake indicator is on
Is the parking brake released? (P. 212)
Depending on the situation, other types of warning buzzer may also sound.
(P. 455, 465)

●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (P. 88)
Do one of the following to stop the alarm:
• Unlock the doors.
• Open the trunk using the entry function or wireless remote control.
• Turn the power switch to ACCESSORY or ON mode, or start the hybrid
system.
●Is the message displayed on the multi-information display?
Check the message on the multi-information display. (P. 465)
●When a warning light turns on or a warning message is displayed, refer to
P. 455, 465.
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

549Alphabetical index
Garage door opener ................ 377
Gauges ....................................... 98
Glove box ................................. 356
Grocery bag hooks .................. 361
Head restraints ........................ 164
Head-up display ....................... 121
Headlights ................................ 218
Automatic High Beam ........... 222
Light switch ........................... 218
Replacing light bulbs............. 445
Windshield wiper linked
headlight illumination .......... 220
Heated steering wheel............. 349
Heaters
Automatic air
conditioning system ............ 338
Outside rear view mirrors...... 343
Seat heaters ......................... 349
High mounted stoplight
Replacing .............................. 445
High voltage components......... 79
Hill-start assist control............ 323
Hood ......................................... 401
Hooks
Coat hooks............................ 376
Grocery bag hooks ............... 361
Retaining hooks (floor mat)..... 24
Horn .......................................... 167
HUD (Head-up display)............ 121
Hybrid battery
(traction battery)...................... 79
Hybrid battery
(traction battery) air
intake vent ....................... 80, 434Hybrid system............................ 75
Acoustic Vehicle Alerting
System ................................. 76
Emergency 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 ........................ 482
Overheating .......................... 494
Power (ignition) switch.......... 196
Starting the hybrid system .... 196
Hybrid System Indicator ......... 100
Hybrid transmission................ 205
If the shift lever
cannot be shifted from P .... 209
Paddle shift switches ............ 208
S mode ................................. 207
G
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