2018 Lexus IS300 ECU

711-2. Theft deterrent system
1
For safety and security
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
The alarm uses light and sound to give an alert when an intrusion is detected.
The alarm is triggered in the following situations when the alarm is set:
●A locked door is unlocked or opened in any way other than using the entry
function, wireless remote control or mech anical key. (The doors will lock again
automatically.)
●The trunk is opened in any way other th an using the entry function or wireless
remote control.
●The hood is opened.
Close the doors, trunk and hood, and
lock all the doors. The system will be set
automatically after 30 seconds.
The indicator light changes from being
on to flashing when the system is set.
Do one of the following to de activate or stop the alarm:
●Unlock the doors.
●Open the trunk using the entry func tion or wireless remote control.
●Turn the engine switch to ACCESSOR Y or IGNITION ON mode, or start
the engine. (The alarm will be deactivat ed or stopped after a few seconds.)
Alarm
The alarm
Setting the alarm system
Deactivating or stopping the alarm

731-2. Theft deterrent system
1
For safety and security
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation of
the system cannot be guaranteed.

792. Instrument cluster
2
Instrument cluster
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
started, or after a few seconds. There may be a malfunction in a system if a light does
not come on, or turn off. Have the ve hicle inspected by your Lexus dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off.
*4, 5
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators (→P. 276)*9
(if equipped)
“SPORT” indicator
(→ P. 288)
*6Security indicator
(→ P. 68, 71)*9
(if equipped)
“SPORT S” indicator
(→ P. 288)
*7Low outside temperature
indicator ( →P. 81)*9
(if equipped)
“SPORT S+” indicator
(→ P. 288)
*1Eco Driving Indicator Light
(→ P. 101)*9
(if equipped)
“CUSTOMIZE” indicator
(→ P. 288)
*8Eco drive mode indicator
(→ P. 288) Snow mode indicator
(
→ P. 184)
*9Eco drive mode indicator
(→ P. 288)*1, 6
(U.S.A.)
“AIR BAG ON/OFF”
indicator ( →P. 46)
*8“SPORT” indicator
(→ P. 288)*1, 6
(Canada)
“AIR BAG ON/OFF”
indicator ( →P. 46)

1123-1. Key information
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Panic mode
■Card key (if equipped)
●The card key is not waterproof.
●The mechanical key that is stored inside the card key should be used only if a problem
arises, such as when the card key does not operate properly.
●If it is difficult to take out the mechanical key, push down the lock release button using a
pen tip etc. If it is still difficult to pull it out, use a coin etc.
■When required to leave the vehicle’s key with a parking attendant
Set the luggage security system ( →P. 123) on and lock the glove box ( →P. 422) as cir-
cumstances demand.
Remove the mechanical key for your own use and provide the attendant with the elec-
tronic key only.
■If you lose your mechanical keys
New genuine mechanical keys can be made by your Lexus dealer using another
mechanical key and the key number stamped on your key number plate. Keep the plate
in a safe place such as your wallet, not in the vehicle.
When is pressed for longer than about
one second, an alarm will sound intermittently
and the vehicle lights will flash to deter any per-
son from trying to break into or damage your
vehicle.
To stop the alarm, press any button on the elec-
tronic key.
●To store the mechanical key in the card key,
insert it while pressing the lock release button.
●If the battery cover is not installed and the bat-
tery falls out or if the battery was removed
because the key got wet, reinstall the battery
with the positive terminal facing the Lexus
emblem.

116
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
3-2. Opening, closing and
locking the doors and trunk
◆Smart access system with push-button start
Carry the electronic key to enable this function.
Grip the driver’s door handle to
unlock the door. Grip the passen-
ger’s front door handle to unlock
all the doors.*
Make sure to touch the sensor on the
back of the handle.
The doors cannot be unlocked for 3
seconds after the doors are locked.
*: The door unlock settings can be changed. ( →P. 120)
Touch the lock sensor (indentation on the upper part of the front door han-
dle) to lock all the doors.
Check that the door is securely locked.
◆Wireless remote control
Locks all the doors
Check that the door is securely
locked.
Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the button
again within 5 seconds unlocks the
other doors.
Press and hold to open the windows
and moon roof.
*
*
: This setting must be customized at your Lexus dealer.
Doors
Unlocking and locking the doors from the outside
1
2
1
2

1173-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Operation signals
A buzzer sounds and the emergency flashers flash to indicate that the doors have been
locked/unlocked. (Locked: once; Unlocked: twice)
A buzzer sounds to indicate that th e windows and moon roof are operating.
■Security feature
If a door is not opened within approximately 60 seconds after the vehicle is unlocked, the
security feature automatically locks the vehicle again.
■Welcome light illumination control
The front position, tail and license plate lights automatically turn on at night when the
doors are unlocked using the entry function or wireless remote control if the light switch
is in the “AUTO” position.
■When the door cannot be locked by the lock sensor on the upper part of the door han-
dle
■Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a buzzer sounds
continuously for 5 seconds. Fully close the d oor to stop the buzzer, and lock the vehicle
once more.
■Setting the alarm
Locking the doors will set the alarm system. ( →P. 71)
■If the smart access system with push-button start or the wireless remote control does
not operate properly
Use the mechanical key to lock and unlock the doors. ( →P. 569)
Replace the key battery with a new one if it is depleted. ( →P. 500)
If the door will not lock even when the topside
sensor area is touched, try touching both the
topside and underside sensor areas at the same
time.

1233-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Using the trunk grip, lower the trunk
without applying force to the side and
push the trunk down from the outside
to close it.
To protect luggage stored in the trunk ag ainst theft, the luggage security system
can be set to on.
Move the luggage security system
levers to the lock position.
To disable the trunk opener, turn the
main switch in the glove box offOn
Off
When the main switch is off, the trunk
lid cannot be opened even with the
wireless remote co ntrol or entry
function.
When closing the trunk
Luggage security system
1
2
1
2

1263-2. Opening, closing and locking the doors and trunk
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
WARNING
■Using the trunk
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in serious injury.
●Remove any heavy loads, such as snow and ice, from the trunk lid before opening it.
Failure to do so may cause the trunk lid to suddenly shut again after it is opened.
●When opening or closing the trunk lid, thoroughly check to make sure the surround-
ing area is safe.
●If anyone is in the vicinity, make sure they are safe and let them know that the trunk is
about to open or close.
●Use caution when opening or closing the tr unk lid in windy weather as it may move
abruptly in strong wind.
●Do not attach any accessories other than genuine Lexus parts to the trunk lid. Such
additional weight on the trunk lid may cause the lid to suddenly shut again after it is
opened.
●The trunk lid may suddenly shut if it is not
opened fully. It is more difficult to open or
close the trunk lid on an incline than on a level
surface, so beware of the trunk lid unexpect-
edly opening or closin g by itself. Make sure
that the trunk lid is fully open and secure
before using the trunk.
●When closing the trunk li d, take extra care to
prevent your fingers etc. from being caught.
●When closing the trunk lid, make sure to
press it lightly on its outer surface. If the trunk
handle is used to fully close the trunk lid, it
may result in hands or arms being caught.