2017 Lexus GS300h charging

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1-2. Hybrid system
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GS450h_300h_OM_OM30F92E_(EE)
For safety and security
◆When stopped/during start off
The gasoline engine stops * when the vehicle is stopped. During start off, the
electric motor (traction motor) drives the vehicle. At slow speeds or when
traveling down a gentle slope, the engine is stopped *
and the electric motor
(traction motor) is used.
When shift lever is in N, the hybrid battery (traction battery) is not b eing
charged.
* : When the hybrid battery (traction battery) requires charging or the engine is
warming up, etc., the gasoline engine will not automatically stop. ( P. 78)
◆During normal driving
The gasoline engine is predominantly used. The electric motor (traction
motor) charges the hybrid battery (traction battery) as necessary.
◆When accelerating sharply
When the accelerator pedal is depressed heavily, the power of the hybrid bat-
tery (traction battery) is added to that of the gasoline engine via the electric
motor (traction motor).
◆When braking (regenerative braking)
The wheel operate the electric motor (t raction motor) as a power generator,
and the hybrid battery (traction battery) is charged.

781-2. Hybrid system
GS450h_300h_OM_OM30F92E_(EE)
■Regenerative braking
In the following situations, kinetic energy is converted to electric energy and decelera-
tion force can be obtained in conjunction with the recharging of the hybrid battery (trac-
tion battery).
●The accelerator pedal is released while driving with the shift lever in D or S.
●The brake pedal is depressed while driving with the shift lever in D or S.
■EV indicator
■Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop automati-
cally in the following conditions:
●During gasoline engine warm-up
●During hybrid battery (traction battery) charging
●When the temperature of the hybrid battery (traction battery) is high or low
●When the heater is switched on
■Charging the hybrid battery (traction battery)
As the gasoline engine charges the hybrid battery (traction battery), the battery does not
need to be charged from an outside source. However, if the vehicle is left parked for a
long time the hybrid battery (traction battery ) will slowly discharge. For this reason, be
sure to drive the vehicle at least once every few months for at least 30 minutes or 16 km
(10 miles). If the hybrid battery (traction battery) becomes fully discharged and you are
unable to start the hybrid system, contact any authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
■Charging the 12-volt battery  P. 533
■After the 12-volt battery has discharged or when the terminal has been removed and
installed during exchange, etc.
The gasoline engine may not stop even if the vehicle is being driven by the hybrid battery
(traction battery). If this continues for a few days, contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
The EV indicator comes on when the vehicle is
driven using only
the electric motor (traction
motor) or the gasoline engine is stopped.

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1-3. Theft deterrent system
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GS450h_300h_OM_OM30F92E_(EE)
For safety and security
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, the door may automatically lock:
●When a person remain ing in the vehicle unlocks the d oor and the alarm is activated.
●While the alarm is activated, a person re maining in the vehicle unlocks the door.
●When recharging or replacing the 12-volt battery.
■Customization
The alarm can be set to deactivate when the mechanical key is used to unlock.
(Customizable features: P. 561)
●The doors are unlocked using the mechanical
key, or the trunk is opened using the mechani-
cal key.
●A person inside the vehicle opens a door, the
trunk or hood, or unlocks the vehicle using an
inside lock button.
●The 12-volt battery is recharged or replaced
when the vehicle is locked. ( P. 533)
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.

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2. Instrument cluster
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Instrument cluster
GS450h_300h_OM_OM30F92E_(EE) Warning lights inform the driver of malfunctions in the indicated vehicle’s sys-
tems.
Warning lights
*
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Brake system warning light ( P. 460) *
2, 3
(If equipped)
“AFS OFF” indicator (
 P. 462)
* 2, 4
Charging system warning
light (P. 460) *
1, 3
Brake hold operated
indicator (
P. 462)
* 2
Malfunction indicator
lamp ( P. 460) *
3
Parking brake indicator (
 P. 462)
* 2
SRS warning light ( P. 460) *
1
Brake system warning light (
 P. 462)
* 1
ABS warning light ( P. 461)
Low fuel level warning light ( P. 462)
* 2
Electric power steering
system warning light (
 P. 461)Seat belt reminder light ( P. 462)
* 2, 3
(If equipped)
PCS (Pre-Crash Safety
system) warning light (
 P. 461) *
2
Master warning light ( P. 462)
* 1
Slip indicator (
P. 461) *
2
(If equipped)
Tire pressure warning light (
 P. 463)
(If equipped)
LKA warning light ( P. 463)

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 panel
brightness 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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2. 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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1282. Instrument cluster
GS450h_300h_OM_OM30F92E_(EE) These images are examples only, and may
vary slightly from actual conditions.
When the vehicle is charging the hybrid battery (traction battery)
When there is no energy flow
Hybrid battery (traction battery) status
LowFullLowFull
Remote Touch screenMulti-information display

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6-3. Do-it-yourself maintenance
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Maintenance and care
GS450h_300h_OM_OM30F92E_(EE) The meanings of each caution symbol on the top of the 12-volt battery are as fol-
lows:
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to disconnect the
ground cable.
●Make sure the power switch on the charger is off when connecting and disconnecting
the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery
●The hybrid system may not start. Follow the procedure below to initialize the system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the hybrid system.
●Unlocking the doors using the smart entry & start system may not be possible immedi-
ately after reconnecting the 12-volt battery. If this happens, use the wireless remote
control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the power switch in ACCESSORY mode. The hybrid sys-
tem may not start with the power switch turned off. However, the hybrid system will
operate normally from the second attempt.
●The power switch mode is recorded by the vehicle. If the 12-volt battery is reconnected,
the vehicle will return the power switch mode to the status it was in before the 12-volt
battery was disconnected. Make sure to tu rn off the power switch before disconnect
the 12-volt battery. Take extra care when connecting the 12-volt battery if the power
switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts at all methods above, contact any
authorized Lexus retailer or Lexus author ized repairer, or any reliable repairer.
Caution symbols
No smoking, no naked
flames, no sparks12-volt battery acid
Shield eyesNote operating instructions
Keep away from childrenExplosive gas
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