Lexus GS350 2012 Manual Online

801-2. Theft deterrent system
GS350/250_EE (OM30C36E)
Engine immobilizer system
The indicator light flashes after
the engine switch has been
turned off to indicate that the
system is operating.
The indicator light stops flashing
after the engine switch has been
turned to ACCESSORY or
IGNITION ON mode to indicate
that the system has been can-
celed.
System maintenance
The vehicle has a maintenance-free type engine 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 transponder chips that prevent the
engine 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.

811-2. Theft deterrent system
1
GS350/250_EE (OM30C36E)
For safety and security
Certifications for the engine immobilizer system

821-2. Theft deterrent system
GS350/250_EE (OM30C36E)

831-2. Theft deterrent system
1
GS350/250_EE (OM30C36E)
For safety and security

841-2. Theft deterrent system
GS350/250_EE (OM30C36E)
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.

85
1 1-2. Theft deterrent system
GS350/250_EE (OM30C36E)
For safety and security
Double locking system
Vehicles employing this system
have labels on the window glass
of both front doors.
Turn the engine 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 unlocking function from both the interior and exterior of the
vehicle.
Setting the double locking system
Canceling the double locking system
CAUTION
Double locking system precaution
Never activate the double locking system when there are people in the vehi-
cle because all the doors cannot be opened from inside the vehicle.

861-2. Theft deterrent system
GS350/250_EE (OM30C36E)
Alarm
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 or wireless remote control. (The door will lock
again automatically.)
A trunk is opened in any way other than using the entry function,
wireless remote control or mechanical key.
The hood is opened.
The tilt sensor detects a change of vehicle inclination. (if
equipped)
Close the doors, trunk and hood,
and lock all the doors using the
entry function or wireless remote
control. The system will be set
automatically after 30 seconds.
The indicator light changes from
being on to flashing when the sys-
tem is set.
: If equipped
The alarm
Setting the alarm system

871-2. Theft deterrent system
1
GS350/250_EE (OM30C36E)
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 engine switch to ACCESSORY or IGNITION ON
mode, or start the engine. (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 following:
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 stopping the alarm

881-2. Theft deterrent system
GS350/250_EE (OM30C36E)
Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
Alarm-operated door lock
When the alarm is operating, the doors are locked automatically to prevent
intruders.
Customization
The alarm can be set to deactivate when the mechanical key is used to
unlock.
(Customizable features: P. 855)
The doors are unlocked using the
mechanical key.
A person inside the vehicle opens a
door, the trunk or hood.
The battery is recharged or replaced
when the vehicle is locked. (P. 826)
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.

891-2. Theft deterrent system
1
GS350/250_EE (OM30C36E)
For safety and security
The intrusion sensor detects intruders or movement in the vehi-
cle.
The tilt sensor detects changes in vehicle inclination, such as
when the vehicle is towed away. (if equipped)
This system is designed to deter and prevent 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. 86)
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 set-
ting the alarm, as they will respond to movement inside the vehi-
cle.
Turn the engine 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 and tilt sensor
1
2