2019 LEXUS GS300H stop start

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1-3. Theft deterrent system
GS450h_300h_OM_OM30F92E_(EE)
For safety and security
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 transpon der 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.

921-3. Theft deterrent system
GS450h_300h_OM_OM30F92E_(EE)
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

1082. Instrument cluster
GS450h_300h_OM_OM30F92E_(EE)
■The meters and display illuminate when
The power switch is in ON mode.
■Instrument panel brightness adjustment
The instrument panel brightness levels when th e tail lights are on and off can be adjusted
individually. However, when the surroundings ar e bright (daytime, etc.), turning on the tail lights will not change the in strument panel brightness.
■Limitation of brightness adjustment
The brightness of the instrument panel lights is automatically adjusted based on the light sensor detecting how bright the surroundings are. However, if the instrument panelbrightness has been manually set to either the brightest or darkest setting, the automatic
adjustment will not be performed.
■Hybrid System Indicator
Charge area
Shows regenerative charging.
Hybrid Eco area
Shows that gasoline engine power is not being used very often.
The gasoline engine will automatically stop
and restart under various conditions.
Eco area
Shows that the vehicle is being driven in an
Eco-friendly manner.
Power area
Shows that an Eco-friendly driving range is
being exceeded (during full power driving etc.)
●Hybrid System Indicator is displayed when the
driving mode is other than the sport mode.
●By keeping the indicator needle within Eco area, more Eco-friendly driving can be
achieved.
●Charge area indicates regeneration* status. Regenerated energy will be used to charge
the battery.
*: When used in this manual, “regeneration”
refers to the conversion of energy created by
the movement of the vehicle into electrical
energy.
Except F SPORT models
F SPORT models
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1232. Instrument cluster
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Instrument cluster
GS450h_300h_OM_OM30F92E_(EE)
Charge area
Shows regenerative charging.
Hybrid Eco area
Shows that gasoline engine power is not being used very often.
The gasoline engine will automatically
stop and restart under various condi- tions.
Eco area
Shows that the vehicle is being dr iven in an Eco-friendly manner.
Power area
Shows that an Eco-friendly driving range is being exceeded (during full power driving etc.)
When the vehicle approaches an inter-
section, the direction the vehicle should
go is guided by the arrow.
When the vehicle approaches an inter-
section, the route guidance will start
and the distance* to the intersection
will also be displayed.
*: The distance decrea ses in increments of
50 m (164 ft.) and the distance indication
will disappear when the vehicle passes
through the intersection.
Hybrid System Indicator
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Route guidance display (vehic les with navigation system)
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1363-1. Key information
GS450h_300h_OM_OM30F92E_(EE)
■When required to leave the vehicle’s key with a parking attendant
Turn the trunk opener main switch off and lock the glove box as circumstances demand. ( P. 148, 370)
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 any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer using the other mechanical key and the keynumber stamped on your key number plate. K eep the plate in a safe place such as your
wallet, not in the vehicle.
■When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any but-
tons on the electronic key while inside the ai rcraft cabin. If you are carrying an electronic key in your bag etc., ensure that the buttons are not likely to be pressed accidentally.Pressing a button may cause the electronic key to emit radio waves that could interfere
with the operation of the aircraft.
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year and a
half.)
●If the battery becomes low, an alarm will sound in the cabin when the hybrid system stops. ( P. 496)
●As the electronic key always receives radio waves, the battery will become depleted even if the electronic key is not used. The following symptoms indicate that the elec-tronic key battery may be depleted. Replace the battery when necessary. ( P. 435)
• The smart entry & start system or the wireless remote control does not operate. • The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
●To avoid serious deterioration, do not leave the electronic key within 1 m (3 ft.) of the
following electrical appliances that produce a magnetic field:
•TVs •Personal computers
• Cellular phones, cordless phones and battery chargers • Recharging cellular phones or cordless phones• Table lamps
• Induction cookers
■Replacing the battery
 P. 435
■Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask any autho- rized Lexus retailer or Lexus authorized repa irer, or any reliable repairer for details.
■If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.

1403-2. Opening, closing and locking the doors and trunk
GS450h_300h_OM_OM30F92E_(EE)
■Operation signals
The emergency flashers flash to indicate that the doors have been locked/unlocked. (Locked: once; Unlocked: twice)
■Security feature
If a door is not opened within approximately 30 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 (vehicles with entry function)
■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 door to stop the buzzer, and lock the vehicle once more.
■Setting the alarm
Locking the doors will set the alarm system. ( P. 91)
■If the smart entry & start system or wireless remote control does not operate properly
●Use the mechanical key to lock and unlock the doors. (P. 527)
●Replace the key battery with a new one if it is depleted. (P. 435)
If the door will not lock even when the topside sensor area is touched, try touching both thetopside and underside sensor areas at the same
time.

1493-2. Opening, closing and locking the doors and trunk
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Operation of each component
GS450h_300h_OM_OM30F92E_(EE)
■Jam protection function (vehicles with power trunk lid)
While the trunk lid is closing automatically, the trunk lid will stop closing and open if something gets caught.
■If the smart entry & start system or wireless remote control does not operate properly
●Use the mechanical key to open the trunk. ( P. 527)
●Replace the key battery with a new one if it is depleted. (P. 435)
■When leaving a key to the vehicle with a parking attendant
 P. 136
■Customization
The trunk unlocking operation can be changed. (Customizable features: P. 566)
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■Before driving
●Make sure that the trunk lid is fully closed. If the trunk lid is not fully closed, it may open unexpectedly while driv ing and hit near-by objects or luggage in the trunk may
be thrown out, causing an accident.
●Do not allow children to play in the trunk. If a child is accidentally locked in the trunk, they could suffer from heat exhaustion,
suffocation or other injuries.
●Do not allow a child to open or close the trunk lid. Doing so may cause the trunk lid to open unexpectedly, or cause the child’s hands,
head, or neck to be caught by the closing trunk lid.
■Important points while driving
Never let anyone sit in the trunk. In the event of sudden braking or a collision, they are
susceptible to death or serious injury.

1513-2. Opening, closing and locking the doors and trunk
3
Operation of each component
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■Trunk easy closer
■Power trunk lid (if equipped)
Observe the following precautions when operating the power trunk lid. Failure to do so may cause serious injury.
●Check the safety of the surrounding area to make sure there are no obstacles or any-
thing that could cause any of your belongings to get caught.
●If anyone is in the vicinity, make sure they are safe and let them know that the trunk is about to open or close.
●If the trunk closer switch is pressed while the trunk lid is opening during automatic operation, the trunk lid stops opening. Take extra care when on an incline, as the trunklid may open or close suddenly.
●On an incline, the trunk lid may suddenly shut after it opens automatically. Make surethe trunk lid is fully open and secure before using the trunk.
●In the following situations, the power trunk lid may detect an abnormality and auto-
matic operation may be stopped. In this case, the trunk lid has to be operated manu- ally. Take extra care in this situation, as the stopped trunk lid may suddenly shut,causing an accident.
• When the trunk lid contacts an obstacle • When the 12-volt battery voltage suddenly drops, such as when the power switchis turned to ON mode or the hybrid system is started during automatic operation
●Do not attach any accessories other than genuine Lexus parts to the trunk lid. Thepower trunk lid may not operate, causing itse lf to malfunction, or the trunk lid may
suddenly shut again after it is opened.
■Jam protection function (vehicles with power trunk lid)
Observe the following precautions.
Failure to do so may cause serious injury.
●Never use any part of your body to intent ionally activate the jam protection function.
●The jam protection function may not work if something gets caught just before the
trunk lid fully closes. Be careful not to catch fingers or anything else in the trunk lid.
●The jam protection function may not work depending on the shape of the object that is caught. Be careful not to catch fingers or anything else.
In the event that the trunk lid is left slightly open,
the trunk easy closer will automatically close it to the fully closed position. It takes several sec-onds before the trunk easy closer begins to
operate. Be careful not to catch fingers or any- thing else in the trunk lid, as this may causebone fractures or other serious injuries.