2015 Lexus ES300h ECU

851-3. Theft deterrent system
ES350_300h_OM_OM33B99U_(U)
1
For safety and security
■Certifications for the engine immobilizer system
For vehicles sold in the U.S.A.
For vehicles sold in Canada
CAUTION
■Certifications for the engine immobilizer system
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper operation
of the system cannot be guaranteed.

861-3. Theft deterrent system
ES350_300h_OM_OM33B99U_(U)
Immobilizer system (hybrid vehicles)
The indicator light flashes after the
“POWER” switch has been turned
off to indicate that the system is
operating.
The indicator light stops flashing
after the “POWER” switch has been
turned to ACCESSORY or ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key to the security system (key with a
built-in transponder chip) of another vehicle
The vehicle’s keys have built-in tr ansponder chips that prevent the
hybrid system from starting if a key has not been previously registered
in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help pr event vehicle theft but does not guar-
antee absolute security against all vehicle thefts.

871-3. Theft deterrent system
ES350_300h_OM_OM33B99U_(U)
1
For safety and security
■Certifications for the immobilizer system
For vehicles sold in the U.S.A.
For vehicles sold in Canada
CAUTION
■Certifications for the immobilizer system
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper operation
of the system cannot be guaranteed.

891-3. Theft deterrent system
ES350_300h_OM_OM33B99U_(U)
1
For safety and security
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the fol-
lowing:
●Nobody is in the vehicle.
●The windows and moon roof are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
●The 12-volt battery is recharged or re placed when the vehicle is locked.
(  P. 682, 686)
●A person inside the vehicle opens a door,
the trunk or hood.
Gasoline vehicles
Hybrid vehicles

127
ES350_300h_OM_OM33B99U_(U)
3-2. Opening, closing and locking the doors and trunk
3
Operation of each component
Smart access system with push-button start
The following operations can be perf ormed simply by carrying the elec-
tronic key on your person, for exam ple in your pocket. (The driver should
always carry the electronic key.)
■Operation signals
A buzzer sounds and the emergency flashe rs flash to indicate that the doors have
been locked/unlocked. (Locked: once; Unlocked: twice)
■Security feature
If a door is not opened within approx imately 60 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.
■Welcome light illumination control
The side marker, parking, tail and license plate lights automatically turn on at night
when the doors are unlocked using the entr y function or wireless remote control if
the light switch is in the “AUTO” position.
Function summary
Hybrid vehiclesGasoline vehicles
Locks and unlocks the doors ( P. 1 2 8 )
Opens the trunk ( P. 1 2 8 )
Starts the engine ( P. 205)
Starts the hybrid system ( P. 212)1
2
3

128
ES350_300h_OM_OM33B99U_(U)
3-2. Opening, closing and locking the doors and trunk
Grip the driver’s door handle to
unlock the door. Grip the passen-
ger’s 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. 1 3 2 )
Touch the lock sensor (the indenta-
tion on the upper part of the door
handle) to lock all the doors.
Check that the door is securely
locked.
Press the button.
If the vehicle is equipped with power
trunk opener and closer, the trunk lid
automatically opens fully.
Unlocking and locking the doors
Opening the trunk

141
ES350_300h_OM_OM33B99U_(U)
3-2. Opening, closing and locking the doors and trunk
3
Operation of each component
Wireless remote control
The wireless remote control can be used to lock and unlock the vehicle.
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.
Opens the windows and moon
roof (press and hold)
*
Opens the trunk
(press and hold)
If the vehicle is equipped with a power
trunk opener and closer, the trunk lid
automatically opens fully.
Sounds the alarm
(press and hold) ( P. 1 4 2 )
*: This setting must be customized at
your Lexus dealer.
Function summary
1
2
3
4
5

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ES350_300h_OM_OM33B99U_(U)
3-2. Opening, closing and locking the doors and trunk
■Operation signals
Doors:
A buzzer sounds and the emergency flashe rs flash to indicate that the doors have
been locked/unlocked. (Locked: once; Unlocked: twice)
Tr u n k :
A buzzer sounds to indicate that the trunk has been opened.
Windows and moon roof:
A buzzer sounds to indicate that the windows and moon roof are operating.
■Welcome light illumination control
 P. 1 2 7
■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 se conds. Fully close the door to stop the buzzer, and lock
the vehicle once more.
■Pa n i c m o d e
■Security feature
 P. 1 2 7
■Alarm
Using the wireless remote control to lo ck the doors will set the alarm system.
(  P. 88)
■Conditions affecting operation
P. 1 3 4
■If the wireless remote control does not operate properly
Locking and unlocking the doors and open ing the trunk: Use the mechanical key.
(  P. 6 7 7 )
When is pressed for longer than about
one second, an alarm will sound intermittently
and the vehicle lights will flash to deter any
person from trying to break into or damage
your vehicle.
To stop the alarm, press any button on the
electronic key.