2017 TOYOTA AVALON key battery

3396-3. Do-it-yourself maintenance
6
Maintenance and care
■After recharging/reco nnecting the battery
The engine may not start. Follow the procedure below to initialize the system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.
● Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors.
● Start the engine with the engine switch in ACCESSORY mode. The engine
may not start when the engine switch turned from off. However, the engine
will operate normally from the second attempt.
● The engine switch mode is recorded by the vehicle. If the battery is recon-
nected, the vehicle will return the engine switch mode to the status it was in
before the battery was disconnected. Make sure to turn off the engine
before disconnect the battery. Take extra care when connecting the battery
if the engine switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact your Toyota
dealer.
WARNING
■ Chemicals in the battery
Batteries contain poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death
or serious injury, take the following precautions while working on or near the
battery:
● Do not cause sparks by touching the battery terminals with tools.
● Do not smoke or light a match near the battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the battery.
● Keep children away from the battery.
1
2
3

3606-3. Do-it-yourself maintenance
●Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2032
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
Electronic key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2
3

3616-3. Do-it-yourself maintenance
6
Maintenance and care
■Use a CR2032 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appliance
shops or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to local laws.
■ If the electronic key battery is depleted
The following symptoms may occur:
●The smart key system and wireless remote control will not function properly.
● The operational range will be reduced.
WARNING
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
● Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.

379
When trouble arises7
7-1. Essential informationEmergency flashers .......... 380
If your vehicle has to be stopped in an
emergency ...................... 381
7-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 382
If you think something is wrong .......................... 386
Fuel pump shut off system ............................ 387
If a warning light turns on or a warning buzzer
sounds ............................ 388
If a warning message is displayed......................... 396
If you have a flat tire.......... 397
If the engine will not start ................................. 409
If the electronic key does not operate
properly ........................... 411
If the vehicle battery is discharged ...................... 414
If your vehicle overheats ........................ 418
If the vehicle becomes stuck ............................... 421

4097-2. Steps to take in an emergency
7
When trouble arises
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(→ P. 160)
● There may be a malfunction in the engine immobilizer system.
(→ P. 68)
One of the following may be the cause of the problem:
● The battery may be discharged. ( →P. 414)
● The battery terminal connections may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical
problem such as electronic key battery depletion or a blown fuse.
However, an interim measure is available to start the engine.
( → P. 410)
If the engine w ill not start
If the engine will not start eve n though correct starting proce-
dures are being followed ( →P. 160), consider each of the follow-
ing points:
The engine will not start even though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over

4117-2. Steps to take in an emergency
7
When trouble arises
■Doors
Use the mechanical key (→P.
93) in order to perform the fol-
lowing operations:
Locks all the doors
Unlocks the door
Turning the key rearward
unlocks the driver’s door. Turn-
ing the key once again within 5
seconds unlocks the other
doors.
■
Tr u n k
→ P. 1 0 6
If the electronic key does not operate
properly
If communication between the electronic key and vehicle is
interrupted ( →P. 114) 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 engine can be started by fol-
lowing the procedure below.
Locking and unlocking the doors and unlocking the trunk
1
2

4137-2. 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 recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(→P. 360)
■ 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 the switch is
pressed.( →P. 161)
■ 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. 449)
● Check if battery-saving mode is set. If it is set, cancel the function.
(→P. 113)
3

4147-2. 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 following 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. 71)
Open the hood ( →P. 328)
Remove the engine cover.
If the vehicle bat tery is discharged
The following procedures may be used to start the engine if the
vehicle’s battery is discharged.
You can also call your Toyota de aler or a qualified repair shop.
1
2
3