2015 TOYOTA COROLLA key battery

4978-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (OM12F00U)
OnceContinuous
(5 seconds)
(Flashes in yel- low)
Smart key system indicator light
An attempt was made to exit the vehicle with
the electronic key and lock the doors without
first turning the engine switch off.
 Turn the engine switch off and lock the
doors again.
Once 
(Flashes in yel-
low for 15 sec- onds)
Smart key system indicator light
Indicates that the electronic key is not present
when attempting to start the engine.
 Confirm the location of the electronic key.
9 times
(Flashes in yel-
low)
Smart key system indicator light
An attempt was made to drive when the regu-
lar key was not inside the vehicle.
 Confirm that the el ectronic key is inside
the vehicle.
Once(Flashes in yel- low for 15 sec-
onds)
Smart key system indicator light
Indicates that the electronic key battery is low.
 Replace the battery.
(P. 463)
Once(Flashes quickly
in green for 15 seconds)
Smart key system indicator light
Indicates that the steering lock has not been
released.
 Release the steering lock. (P. 169)
Once(Flashes in yel-
low for 30 sec- onds)
Smart key system indicator light
• When the doors were unlocked with themechanical key and then the engine switch
was pressed, the electronic key could not be
detected in the vehicle.
• The electronic key could not be detected in the vehicle even after the engine switch was
pressed two consecutive times.
 Vehicles with a continuously variable
transmission: Touch the electronic key to
the engine switch while depressing the
brake pedal.
Vehicles with a manual transmission:
Touch the electronic key to the engine
switch while depressing the clutch pedal.
Interior
buzzerExterior buzzerWarning lightWarning light/Details/Action

5088-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM12F00U)
9
times
An attempt was made to drive
when the regular key was not
inside the vehicle.
Confirm that the elec-
tronic key is inside the
vehicle.

Contin-
uous
(5 sec-
onds)
An attempt was made to lock
the doors using the smart key
system while the electronic key
was still inside the vehicle.
 Retrieve the electronic key
from the vehicle and lock
the doors again.
Once
Contin-
uous
(5 sec-
onds)
An attempt was made to lock
either front door by opening a
door and putting the inside lock
button into the lock position,
then closing the door by pulling
on the outside door handle with
the electronic key still inside the
vehicle.
 Retrieve the electronic key
from the vehicle and lock
the doors again.
Once
The electronic key has a low
battery.
Replace the electronic key
battery. ( P. 463)
Interior
buzzerExterior
buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5258-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (OM12F00U)
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. 164)
● There may be a malfunction in the engine immobilizer system.
( P. 66)
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 531)
● 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. 526)
If the engine will not start
If the engine will not start even though correct starting proce-
dures are being followed ( P. 161, 164), consider each of the fol-
lowing 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 (vehicles with a smart key
system)

5268-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM12F00U)
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. 531)
● There may be a malfunction in the steering lock system (vehicles
with a smart key system).
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the engine switch is functioning
normally:
Set the parking brake.
Shift the shift lever to P (continuously variable transmission) or N
(manual transmission).
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while
depressing the brake pedal and cl utch pedal (manual transmission)
firmly.
Even if the engine can be started using the above steps, the system
may be malfunctioning. Have the v ehicle inspected by your Toyota
dealer.
The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound.
Emergency start function (vehicles with a smart key system)
1
2
3
4

5288-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM12F00U)
Use the mechanical key
( P. 93) in order to perform the
following 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.
If the electronic key does not operate properly
(vehicles with a smar t key system)
If communication between the electronic key and vehicle is
interrupted ( P. 115) 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
can be opened and the engine ca n be started by following the
procedure below.
Locking and unlocking the doors
1
2

5308-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM12F00U)
■Stopping the engine
Shift the shift lever to P (continuously variable transmission) or N (manual
transmission) 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. 463)
■ Changing engine switch modes
Release the brake pedal (continuously variable transmission) or clutch pedal
(manual transmission) 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. 166)
■ 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. 570)
● Check if battery-saving mode is set. If it is set, cancel the function.
(P. 114)
3

5348-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM12F00U)
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■ To prevent battery discharge
●Turn off the headlights and the audio system while the engine 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.
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
■ When recharging or replacing the battery
●Vehicles with a smart key system: In some cases, it may not be possible to
unlock the doors using the smart key system when the battery is dis-
charged. Use the wireless remote control or the mechanical key to lock or
unlock the doors.
● The engine may not start on the first attempt after the battery has recharged
but will start normally after the second attempt. This is not a malfunction.
● Vehicles with a smart key system: The engine switch mode is memorized by
the vehicle. When the battery is reconnected, the system will return to the
mode it was in before the battery was discharged. Before disconnecting the
battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery dis-
charged, be especially careful when reconnecting the battery.
● Make sure that the key is not inside the vehicle when recharging or replac-
ing the battery. The key may be locked in the vehicle if the alarm is acti-
vated. ( P. 69)

594
COROLLA_TMMMS_TMMC_U (OM12F00U)
What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your keys or mechanical keys, new genuine keys or mechanical
keys can be made by your Toyota dealer. (P. 94)
●If you lose your keys or electronic keys, the risk of vehicle theft increases
significantly. Contact your Toyota dealer immediately. ( P. 96)
●Is the key battery weak or depleted? (P. 463)
●Vehicles with a smart key system:
Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 166)
●Vehicles with a smart key system:
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 the radio
wave. ( P. 115)
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