2014 Lexus IS250 key

4928-2. Steps to take in an emergency
IS250_EE(OM53C51E)
Once3 times
The electronic key was carried out-
side the vehicle and a door other
than the driver’s door was opened
and closed while the engine switch
was in a mode other than off.
→Bring the electronic key back
into the vehicle.
The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
in P and the engine switch was not
turned off.
→Turn the engine switch off.
→Bring the electronic key back
into the vehicle.
9 times
An attempt was made to drive when
the electronic key was not inside the
vehicle.
→Confirm that the electronic key
is inside the vehicle.
Con-
tinuous
An attempt was made to lock the
doors using the smart entry & start
system while the electronic key was
still inside the vehicle.
→Retrieve the electronic key
from the vehicle and lock the
doors again.
OnceCon-
tinuous
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.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Vehicles with the entry function)
(Flashes)

4938-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
Once
The electronic key has a low battery.
→Replace the electronic key bat-
tery. (→P. 4 4 2 )
Once
The steering lock could not be
released within 3 seconds of the
engine switch being pressed.
→Press the engine switch while
depressing the brake pedal and
moving the steering wheel left
and right.
Once
Indicates a malfunction in the smart
entry & start system
→Have the vehicle inspected by
any authorized Lexus dealer or
repairer, or another duly quali-
fied and equipped professional.
Once
• When the doors were unlocked
with the mechanical 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.
→Touch the electronic key to the
engine switch while depressing
the brake pedal.
Once
During an engine starting procedure
in the event that the electronic key
was not functioning properly (→P.
525), the engine switch was touched
with the electronic key.
→Press the engine switch within
10 seconds of the buzzer sound-
ing.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5218-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
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. 1 9 2 )
●There may be a malfunction in the engine immobilizer system.
(→P. 77)
One of the following may be the cause of the problem:
●The battery terminal connections may be loose or corroded.
●The battery may be discharged. (→P. 5 2 7 )
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. 522)
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed (→P. 192), consider each of the following points:
The engine will not start even though the starter motor operates nor-
mally.
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.
The starter motor does not turn over

5248-2. Steps to take in an emergency
IS250_EE(OM53C51E)
■Doors
Use the mechanical key (→P. 113) in
order to perform the following oper-
ations:
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks all the doors
Opens the windows and moon
roof (turn and hold)
*
*
: This setting must be customized at any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
■Tr u n k
Turn the mechanical key clockwise
to open.
If the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted (→P.
132) or the electronic key cannot be used because the battery is depleted,
the smart entry & start system and wireless remote control cannot be used. In
such cases, the doors and trunk can be opened and the engine can be started
by following the procedure below.
Locking and unlocking the doors, unlocking the trunk and key linked
functions
1
2
3
4

5258-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a
buzzer sounds and the engine switch
will turn to IGNITION ON mode.
When the smart entry & start system is
deactivated in customization setting, the
engine switch will turn to ACCESSORY
mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the engine switch.
In the event that the engine still cannot be started, contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
Starting the engine
1
2
3
4

5268-2. Steps to take in an emergency
IS250_EE(OM53C51E)
■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. 4 4 2 )
■Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set, the alarm
may be triggered.
■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. 1 9 3 )
■When the electronic key does not work properly
●Make sure that the smart entry & start system has not been deactivated in the customi-
zation setting. If it is off, turn the function on.
(Customizable features →P. 551)
●Check if battery-saving mode is set. If it is set, cancel the function. (→P. 131)
CAUTION
■When using the mechanical key and operating the power windows and moon roof
Operate the power window or moon roof after checking to make sure 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 passengers to get caught in power window and moon roof.
3

5298-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as soon
as possible.
■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 certain 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
●For vehicles with an alarm: Make sure that the key is not inside the vehicle when
recharging or replacing the battery. The key may be locked in the vehicle if the alarm is
activated. (→P. 8 5 )
●In some cases, it may not be possible to unlock the doors using the smart entry & start
system when the battery is discharged. Use the wireless remote control or the mechan-
ical 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.
●The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, 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 discharged, be
especially careful when reconnecting the battery.
4
5
6
7

5549-2. Customization
IS250_EE(OM53C51E)
■Door lock (→P. 118, 125, 524)
■Smart entry & start system and wireless remote control (→P. 118, 125)
FunctionDefault settingCustomized setting
Unlocking using a mechanical
keyAll doors
unlocked in
one stepDriver’s door
unlocked in one
step, all doors
unlocked in two
steps
——O
Speed-detecting automatic door
lock functionOnOffO—O
Shifting gears to position other
than P locks all doorsOffOnO—O
Shifting gears to P unlocks all
doorsOffOnO—O
Opening driver's door unlocks
all doorsOnOffO—O
Locking/unlocking of the trunk
when all doors are locked/
unlocked
OnOff——O
123
FunctionDefault settingCustomized setting
Operation signal
(Emergency flashers)OnOffO—O
Time elapsed before automatic
door lock function is activated if
door is not opened after being
unlocked
30 seconds
60 seconds
——O120 seconds
Open door warning buzzerOnOff——O
123