2019 Lexus IS300 key

5538-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U
InteriorbuzzerExteriorbuzzerWarning messageDetails/Actions
Con-
tinuous  The driver’s door was opened when
the shift lever was
not in P and the
engine switch was not turned off.
 Shift the shift lever to P.
Con-
tinuousCon-
tinuous
The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
not in P and the engine switch was
not turned off.
Shift the shift lever to P.
 Bring the electronic key back
into the vehicle.
Once  The electronic key is not detected
when an attempt is made to start the
engine.

Start the engine with the elec-
tronic key present.
(Flashes)
(Displayed alternately)
(Flashes)

5548-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
OnceCon-
tinuous
An attempt was made to exit the
vehicle with the electronic key and
lock the doors without first turning
the engine switch off when the shift
lever was in P.
Turn the engine switch off and
lock the doors again.
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.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
(Displayed alternately)
(Flashes)

5558-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U
Con-
tinuous
An attempt was made to lock the
doors using the smart access system
with push-button start 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 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 bat-
tery. ( P. 502)
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.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)

5568-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
Once
• When the doors were unlockedwith the mechanical key and then
the engine swit ch 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 proce-
dure in the event that the electronic
key was not functioning properly
( P. 573), the engine switch was
touched with the electronic key.
 Press the engine switch within
10 seconds of the buzzer sound-
ing.

Indicates that:
• With the engine switch off, the
doors were unlocked and then the
driver's door was opened and
closed.
• The engine switch was turned to ACCESSORY mode without
starting the engine.
• The shift lever wa s shifted to P or
N from another shift position with
the engine switch in IGNITION
ON mode.
 Press the engine switch while
depressing the brake pedal.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions

5708-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
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. 186)
●There may be a malfunction in th e engine immobilizer system. (P. 76)
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. 575)
The engine starting system may be malfun ctioning due to an electrical problem
such as electronic key battery depletio n or a blown fuse. However, an interim
measure is available to start the engine. ( P. 571)
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed ( P. 186), consider each of the following points:
The engine will not start even thoug h 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

5728-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
■Doors
Use the mechanical key (P. 119) in
order to perform the following oper-
ations:
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key once
again within 5 seconds unlocks the
other doors.
Opens the windows and moon roof (turn and hold)*
*
: This setting must be custom ized at your Lexus dealer.
■Trunk
Turn the mechanical key clockwise
to open. (P. 79)
If the electronic key does not operate properly
If communication between the electron ic key and vehicle is interrupted (P.
137) or the electronic key cannot be us ed because the battery is depleted, the
smart access system with push-button st art and wireless remote control can-
not be used. In such cases, the doors and trunk can be opened and the engine
can be started by follow ing the procedure below.
Locking and unlocking the doors, unlocking the trunk and key linked
functions
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5738-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U
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 access system with
push-button start is deactivated in cus-
tomization 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 your Lexus dealer.
Starting the engine
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2
3
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5748-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
■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. 502)
■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. 187)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features:  P. 613)
●Check if battery-saving mode is set. If it is set, cancel the function. (P. 136)
WARNING
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r 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 op erate the mechanical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
3