Page 453 of 577
452
4-3. Do-it-yourself maintenance
Key batter y
Replace the battery with a new one if it is discharged.
■You will need the following items:
●Flathead screwdriver (To prevent damage to the key, cover
the tip of the screwdriver with rag.)
● Small Phillips-hea d screwdriver
● Lithium battery CR2032 (vehicles without smart key system),
CR1632 (vehicles with smart key system)
■ Replacing the battery (vehicles without smart key system)
Remove the cover using a
coin protected with tape etc.
Remove the discharged trans-
mitter battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2
Page 454 of 577
453
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Replacing the battery (vehicles with smart key system)
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2
STEP3
Page 455 of 577

454 4-3. Do-it-yourself maintenance
■If the key battery is discharged
The following symptoms may occur.
●The smart key system and wireless remote control will not function prop-
erly.
● The operational range is reduced.
■ Use a CR2032 (vehicles without sm art key system) or CR1632 (vehicles
with smart key system) lithium battery
● Batteries can be purchased at your Toyota dealer, jewelers, or camera
stores.
● Replace only with the same or equivalent type recommended by your
Toyota dealer.
● Dispose of used batteries according to the local laws.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
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 components inside the remote control.
● Do not bend either of the battery terminals.
Page 478 of 577

When trouble arises5
477
5-1. Essential information ................... 478
If your vehicle needs to be towed ........................ 478
If you think something is wrong ......................... 485
Fuel pump shut off system ........................... 486
Event data recorder ......... 487 5-2. Steps to take in an
emergency .................... 489
If a warning light turns on or a warning buzzer
sounds... ....................... 489
If a warning message is displayed (vehicles with
multi-information
display) .......................... 498
If you have a flat tire......... 499
If the engine will not start ................................ 510
If the shift lever cannot be shifted from P............ 512
If you lose your keys/ wireless remote control
transmitter ...................... 513
If the electronic key does not operate properly
(vehicles with smart
key system).................... 514
If the battery is discharged ..................... 516
If your vehicle overheats ....................... 520
If the vehicle becomes stuck .............................. 523
Page 511 of 577

510
5-2. Steps to take in an emergency
If the engine will not star t
If the engine still does not start after following the correct starting
procedure (P. 164, 168) or releasing the steering lock ( P. 166,
169), confirm the fo llowing points.
■The engine will not start even when the starter motor oper-
ates normally.
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 once more following correct starting
procedures. ( P. 164, 168)
● There may be a malfunction in the engine immobilizer system.
( P. 1 1 0 )
■ The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.
One of the following may be the cause of the problem.
●The battery may be discharged. ( P. 516)
● The battery terminal connec tions may be loose or corroded.
■ The starter motor does not turn over (vehicles with smart
key system).
The engine starting system may be malfunctioning due to an
electrical problem such as an open circuit or a blown fuse. How-
ever, an interim measure is available to start the engine.
( P. 511)
Page 512 of 577

5
When trouble arises
511
5-2. Steps to take in an emergency
Emergency start function (vehicles with smart key system)
When the engine does not start, the following steps can be used as
an interim measure to start the engine if the “ENGINE START STOP”
switch is functioning normally. Set the parking brake.
Shift the shift lever to P.
Set the “ENGINE START STOP” switch to the ACC mode.
Push and hold the “ENGINE START STOP” switch about 15
seconds while depressing the brake pedal firmly.
Even if the engine can be start ed using the above steps, the system
may be malfunctioning. Have the vehicle checked by your Toyota
dealer.
■ The starter motor does not turn over, the interior lights and
headlights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 516)
● There may be a malfunction in the steering lock system (vehi-
cles with smart key system).
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4
Page 515 of 577

514
5-2. Steps to take in an emergency
If the electronic key does not operate properly (vehicles with smart key system)
Locking and unlocking the doors, and mechanical key linked functions
Locks all doors
Unlocks all doors
Turning the key rearward unlocks
the driver’s door. Turning the key
once again unlocks the other
doors.
Changing “ENGINE START STOP” switch modes and starting the engine
Shift the shift lever to P and apply the brakes.
Touch the Toyota emblem side of
the electronic key to the
“ENGINE START STOP” switch.
An alarm will sound to indicate
that the start function cannot
detect the electronic key that is
touched to the “ENGINE START
STOP” switch if any of the doors
is opened and closed while the
key is touched to the switch.
If communication between the electronic key and vehicle is inter-
rupted (P. 37) or the electronic key cannot be used because the
battery is depleted, the smart key system and wireless remote con-
trol cannot be used. In such cases, the doors can be opened or the
engine can be started by following the procedure below.
STEP1
STEP2
Page 516 of 577
5
When trouble arises
515
5-2. Steps to take in an emergency
To change “ENGINE START STOP” switch modes: Within 5
seconds of the buzzer soundin
g, release the brake pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the sw itch is pressed. (P. 164)
To start the engine: Press the “ENGINE START STOP” switch
within 5 seconds after the buzz er sounds, keeping the brake
pedal depressed.
In the event that the “ENGINE ST ART STOP” switch still cannot be
operated, contact your Toyota dealer.
■ Stopping the engine
Shift the shift lever to P and press the “ENGINE START STOP” switch as
you normally do when stopping the engine.
■ Replacing the key battery
As the above procedure is the temporary measure, it is recommended that
the electronic key battery be replaced immediately when the battery
depletes. ( P. 452)
STEP3