2016 Lexus GS300h ECU

841-3. Theft deterrent system
GS450h_300h_OM_OM30F00E_(EE)
Immobilizer system
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 indi-
cate 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 transp onder chips that prevent the hybrid sys-
tem 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 prev ent vehicle theft but does not guarantee
absolute security against all vehicle thefts.

851-3. Theft deterrent system
1
GS450h_300h_OM_OM30F00E_(EE)
For safety and security
■Certifications for the immobilizer system

871-3. Theft deterrent system
1
GS450h_300h_OM_OM30F00E_(EE)
For safety and security

89
1
1-3. Theft deterrent system
GS450h_300h_OM_OM30F00E_(EE)
For safety and security
Double locking system
Vehicles employing this system have
labels on the window glass of both front
doors.
Turn the power switch off, have all the passengers exit the vehicle and ensure that
all the doors are closed.
Using the entry function:
Touch the sensor area on the outside door handle twice within 5 seconds.
Using the wireless remote control:
Press twice within 5 seconds.
Using the entry function: Hold the outside door handle.
Using the wireless remote control: Press .
Unauthorized access to the vehicle is prevented by disabling the door unlock-
ing function from both the interior and exterior of the vehicle.
Setting the double locking system
Canceling the double locking system
WA R N I N G
■Double locking system precaution
Never activate the double locking system when there are people in the vehicle
because all the doors cannot be opened from inside the vehicle.

911-3. Theft deterrent system
1
GS450h_300h_OM_OM30F00E_(EE)
For safety and security
Do one of the following to deactivate or stop the alarm:
●Unlock the doors or open the trunk using the entry function or wireless
remote control.
●Turn the power switch to ACCESSORY or ON mode, or start the hybrid sys-
tem. (The alarm will be deactivated or stopped after a few seconds.)
■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 follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof (if equipped) are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
Deactivating or st opping the alarm

931-3. Theft deterrent system
1
GS450h_300h_OM_OM30F00E_(EE)
For safety and security
●The intrusion sensor detects intruders or movement in the vehicle.
●The tilt sensor detects changes in vehicle inclination, such as when the vehicle
is towed away.
This system is designed to deter and pr event vehicle theft but does not guarantee
absolute security against all intrusions.
■Setting the intrusion sensor and tilt sensor
The intrusion sensor and tilt sensor will be set automatically when the alarm is
set. ( →P. 9 0 )
■Canceling the intrusion sensor and tilt sensor
If you are leaving pets or other moving things inside the vehicle, make sure to
stop the intrusion sensor and tilt sensor before setting the alarm, as they will
respond to movement inside the vehicle.
Turn the power switch off.
Press the intrusion sensor and tilt
sensor cancel switch.
A message will be shown on the
multi-information display in the
instrument cluster.
Press the switch again to re-enable
the intrusion sensor and tilt sensor.
Intrusion sensor (if equipped) and tilt sensor (if equipped)
1
2

951-3. Theft deterrent system
1
GS450h_300h_OM_OM30F00E_(EE)
For safety and security
■Tilt sensor detection considerations (if equipped)
The sensor may trigger the alarm in the following situations:
●The vehicle is transported by a ferry, trailer, train, etc.
●The vehicle is parked in a parking garage.
●The vehicle is inside a car wash that moves the vehicle.
●Any of the tires loses air pressure.
●The vehicle is jacked up.
●An earthquake occurs or the road caves in.
NOTICE
■To ensure the intrusion sensor function correctly
●Installing accessories other than genuine Lexus parts or leaving objects between the
driver’s seat and front passenger’s seat may reduce the detection performance.
●To ensure that the sensors operate properly,
do not touch or cover them.
●Do not spray air fresheners or other products
directly into the sensor holes.

1012. Instrument cluster
2
Instrument cluster
GS450h_300h_OM_OM30F00E_(EE)
The indicators inform the driver of the operating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator
(→ P. 2 3 0 ) Rear fog light indicator
(
→ P. 2 4 9 )
Tail light indicator
( → P. 2 3 6 ) Cruise control indicator
(
→ P. 311, 323, 327)
Headlight high beam
indicator ( →P. 2 3 7 )
(If equipped)
Dynamic radar cruise
control indicator
(→ P. 303, 315)
(If equipped)
Automatic High Beam
indicator ( →P. 2 4 5 ) /
Adaptive High-beam
System indicator
( → P. 2 4 1 ) Cruise control “SET”
indicator
(
→ P. 303, 315, 327)
Front fog light indicator
( → P. 2 4 9 )
(If equipped)
LDA indicator ( →P. 2 9 3 ) /
LKA indicator ( →P. 2 8 5 )
*1
(If equipped)
Lexus parking assist-sensor
indicator*2
Brake hold operated
indicator ( →P. 2 3 4 )
*3
(If equipped)
“AFS OFF” indicator
(→ P. 2 3 8 ) *4Security indicator
(→ P. 8 4 , 9 0 )
*2, 5
Slip indicator ( →P. 3 4 6 )*6Low outside temperature
indicator ( →P. 1 0 4 )
*2VSC OFF indicator
(→ P. 3 4 7 )“READY” indicator
(→ P. 2 1 7 )
*3, 7
(If equipped)
PCS (Pre-Crash Safety
system) warning light
(→ P. 2 7 2 ) EV indicator ( →P. 76 )