key battery TOYOTA AVALON HYBRID 2022 Owner's Manual

4907-2. Steps to take in an emergency
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along wit h a message
shown on the multi-information display.
● Malfunction in the ABS
The ABS warning light comes on. ( P. 479)
● Malfunction in the brake system
The brake system warning light (yellow) comes on. ( P. 478)
● Malfunction in the tire pressure warning system
The tire pressure warning light comes on. ( P. 482)
● Remaining fuel level is low
The low fuel level warning light comes on. ( P. 481)
■ If a message instructing to refer to the Owner’s Manual is disp layed
● If the following messages are shown, there may be a malfunction .
Immediately stop the vehicle in a safe place and contact your T oyota dealer.
Continuing to drive the vehicle may be dangerous.
• “Low Braking Power Stop in a Safe Place See Owner’s Manual”
• “Oil Pressure Low Stop in a Safe Place See Owner’s Manual”
• “Charging System Malfunction Stop in a Safe Place See Owner’s Man-
ual”
● If the following message is shown, there may be a malfunction.
Immediately have the vehicle inspected by your Toyota dealer.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
• “Smart Key System Malfunction”
● If “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
displayed, follow the instructions accordingly. ( P. 517)
● If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is displayed, follow the instructions accordingly. ( P. 456)

4927-2. Steps to take in an emergency
■If “Auto Power Off to Con serve Battery” is displayed
Power was turned off due to the automatic power off function.
Next time when starting the hybrid system, operate the hybrid s ystem for
approximately 5 minutes to recharge the 12-volt battery.
■ If “A New Key has been Registered Contact Your Dealer for Detai ls” is
displayed
This message will be displayed each time the driver’s door is opened when
the doors are unlocked from the outside for approximately one week after a
new electronic key has been registered.
If this message is displayed but you have not had a new electro nic key regis-
tered, ask your Toyota dealer to check if an unknown electronic key (other
than those in your possession) has been registered.
■ When “Headlight System Malfunction Visit Your Dealer” is displa yed
The following systems may be malfunctioning. Have the vehicle i nspected by
your Toyota dealer immediately.
● The LED headlight system
● AHB (Automatic High Beam)
■ If “Radar Cruise Control Unavailable See Owner's Manual” is sho wn
The dynamic radar cruise control with full-speed range system is suspended
temporarily or until the problem shown in the message is resolv ed. (causes
and coping methods: P. 244)
■ If “Radar Cruise Control Unavailable” is shown
The dynamic radar cruise control with full-speed range system c annot be
used temporarily. Use the system when it becomes available agai n.
■ If a message that indicates the mal function of front camera is displayed
The following systems may be suspended until the problem shown in the
message is resolved.
● PCS (Pre-Collision System)
● LTA (Lane Tracing Assist)
● AHB (Automatic High Beam)
● RSA (Road Sign Assist) (if equipped)
● Dynamic radar cruise control with full-speed range
■ If a message that indicates the malfunction of radar sensor is displayed
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 244, 478)
● PCS (Pre-Collision System)
● LTA (Lane Tracing Assist)
● Dynamic radar cruise control with full-speed range (if equipped )

5057-2. Steps to take in an emergency
7
When trouble arises
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly. (P. 508)
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle.
● There may be a mal function in the immobilizer system.
(  P. 86)
● There may be a malfunction i n the steering lock system.
● The hybrid system may be malfunc tioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. H ow-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 506)
● The temperature of the hybrid battery (traction battery) may be
extremely low (below appro ximately -22°F [-30°C]). (P. 81, 202)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 510)
● The 12-volt battery terminal conn ections may be loose or corroded.
(  P. 433)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on
the situation. Check the followi ng and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 200)
The interior lights and headlights are dim, or the horn does no t
sound or sounds at a low volume.

5077-2. Steps to take in an emergency
7
When trouble arises
■Doors
Using the mechanical key (P.
139) in order to perform the fol-
lowing operations (driver’s door
only):
Locks all doors
Closes the windows and the
moon roof
*1 (turn and
hold)
*2
Unlocks the door
Turning the key rearward unlocks the driver's door. Turning the key once
again unlocks the other doors.
Opens the windows and the moon roof*1 (turn and hold)*2
*1: If equipped
*2: This setting must be customized at your Toyota dealer.
If the electronic key does not operate
properly
If communication between the electronic key and vehicle is
interrupted (P. 155) or the electronic key cannot be used
because the battery is depleted, the smart key system and wire-
less remote control cannot be used. In such cases, the doors
and trunk can be opened and the hybrid system can be started
by following the procedure below.
Locking and unlocking the doors, unlocking the trunk and key
linked functions
1
2
3
4

5097-2. Steps to take in an emergency
7
When trouble arises
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when
stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 461)
■ Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 201)
■ 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. 548)
● Check if battery-saving mode is set. If it is set, cancel the f unction.
( P. 154)
WARNING
■ When using the mechanical key and operating the power windows or
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.
3

5107-2. Steps to take in an emergency
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by foll owing the
steps below.
Confirm that the electronic key
is being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and doors locked. ( P. 90)
Open the hood and remove the
fuse box cover.
Push the tabs in and lift the lid off.
Open the exclusive jump start-
ing terminal cover.
If the 12-volt batter y is discharged
The following procedures may be used to start the hybrid sys-
tem if the vehicle’s 12-volt battery is discharged.
You can also call your Toyota de aler or a qualified repair shop.
1
2
3

5137-2. Steps to take in an emergency
7
When trouble arises
■Starting the hybrid system when the 12-volt battery is discharg ed
The hybrid system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid s ystem is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic .
■ When the 12-volt battery is removed or discharged
● Information stored in the ECU is cleared. When the 12-volt batt ery is
depleted, have the vehicle inspected at your Toyota dealer.
● Some systems may require initialization. ( P. 557)
■ When removing the 12-vo lt battery terminals
When the 12-volt battery terminals are removed, the information stored in the
ECU is cleared. Before removing the 12-volt battery terminals, contact your
Toyota dealer.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gr adually even when
the vehicle is not in use, due to natural discharge and the dra ining effects of
certain electrical appliances. If the vehicle is left for a lon g time, the 12-volt
battery may discharge, and the hybrid system may be unable to start. (The
12-volt battery recharges automatically while the hybrid system is operating.)
■ When recharging or replacing the 12-volt battery
●In some cases, it may not be possible to unlock the doors using the smart
key system when the 12-volt battery is discharged. Use the wire less remote
control or the mechanical key to lock or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt battery
has recharged but will start normally after the second attempt. This is not a
malfunction.
● The power switch mode is memorized by the vehicle. When the 12- volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt bat-
tery discharged, be especially careful when reconnecting the 12 -volt battery.

562What 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. 139)
●If you lose your electronic keys, the risk of vehicle theft inc reases signifi-
cantly. Contact your Toyota dealer immediately. ( P. 141)
●Is the key battery weak or depleted? (P. 461)
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. ( P. 201)
●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. 155)
●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. 145)
●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. 149)
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 t he electronic key left inside

563What to do if... (Troubleshooting)
●Did you press the power switch while firmly depressing the brake pedal?
( P. 200)
●Is the shift lever in P? ( P. 202)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 152)
●Is the steering wheel unlocked? (P. 203)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way.
(P. 508)
●Is the 12-volt battery discharged? ( P. 510)
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake p edal with the
power switch in ON mode. ( P. 213)
●It is locked automatically to prevent theft of the vehicle. ( P. 203)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be oper-
ated if the window lock switch is pressed. ( P. 177)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a peri od of
time. ( P. 202)
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress
the brake pedal
The steering wheel cannot be t urned after the hybrid system
is stopped
The windows do not open or close by operating the power
window switches
The power switch is turned off automatically

568Alphabetical index
Child safety ................................ 5312-volt battery precautions ................. 435, 515
Airbag precautions .................. 37
Battery precautions ....... 435, 515
Child restraint system ............. 54
How your child should wear the seat belt .......................... 30
Installing child restraints ......... 58
Moon roof precautions .......... 184
Power window lock switch .... 177
Power window precautions ... 180
Rear door child-protectors .... 145
Removed electronic key battery precautions ............. 462
Seat belt extender
precautions ........................... 33
Seat belt precautions .............. 32
Seat heater precautions........ 371
Trunk precautions ................. 150
Child-protectors....................... 145
Cleaning ........................... 408, 411 Exterior ................................. 408
Interior................................... 411
Seat belts .............................. 412
Wheels and wheel ornaments .......................... 409 Coat hooks ............................... 398
Condenser................................ 430
Connected Services
*
Console box ............................. 378
Consumption
screen ............................ 106, 130
Coolant
Capacity................................ 528
Checking............................... 429
Preparing and checking before winter ...................... 354
Cooling system........................ 429 Hybrid system
overheating ........................ 517
Cornering lights....................... 223
Cruise control Dynamic radar cruise control with full-speed range .......... 281
Cup holders ............................. 380
Curtain shield airbags............... 35
Customizable features ............ 548