Page 8 of 1014

8
GS450h_300h_OM_OM30D53E_(EE)
For your information
Please note that this manual applies to all models and explains all equipment,
including options. Therefore, you may find some explanations for equipment
not installed on your vehicle.
All specifications provided in this manual are current at the time of printing.
However, because of the Lexus policy of continual product improvement, we
reserve the right to make changes at any time without notice.
Depending on specifications, the vehicle shown in the illustrations may differ
from your vehicle in terms of color and equipment.
Both genuine Lexus and a wide variety of other spare parts and accessories
for Lexus vehicles are currently available on the market. Should it be deter-
mined that any of the genuine Lexus parts or accessories supplied with the
vehicle need to be replaced, Lexus recommends that genuine Lexus parts or
accessories, be used to replace them. Other parts or accessories of matching
quality can also be used. Lexus cannot accept any liability or guarantee spare
parts and accessories which are not genuine Lexus products, nor for replace-
ment or installation involving such parts. In addition, damage or performance
problems resulting from the use of non-genuine Lexus spare parts or accesso-
ries may not be covered under warranty.
Main Owner’s Manual
Accessories, spare parts and modification of your Lexus
Page 35 of 1014

351-1. For safe use
1
For safety and security
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering
with the pedals while driving. An unexpectedly high speed may result or it
may become difficult to stop the vehicle, leading to an accident, or leading to
death or a serious injury.
When installing the driver’s floor mat
Do not use floor mats designed for other models or different model year
vehicles, even if they are Lexus Genuine floor mats.
Only use floor mats designed for the driver’s seat.
Always install the floor mat securely using the retaining hooks (clips) pro-
vided.
Do not use two or more floor mats on top of each other.
Do not place the floor mat bottom-side up or upside-down.
Before driving
Check that the floor mat is securely
fixed in the correct place with all the
provided retaining hooks (clips). Be
especially careful to perform this check
after cleaning the floor.
With the hybrid system stopped and the
shift lever in P, fully depress each pedal
to the floor to make sure it does not
interfere with the floor mat.
Page 99 of 1014
981-3. Theft deterrent system
GS450h_300h_OM_OM30D53E_(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 system. (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
Page 107 of 1014

1062. Instrument cluster
GS450h_300h_OM_OM30D53E_(EE)
*1: These lights turn on when the power switch is turned to ON mode to indi-
cate that a system check is being performed. They will turn off after the
hybrid system is on, or after a few seconds. There may be a malfunction in
a system if the lights do not come on, or turn off. Have the vehicle
inspected by any authorized Lexus dealer or repairer, or another duly qual-
ified and equipped professional.
*2: The light flashes to indicate a malfunction.
The indicators inform the driver of the operating state of the vehi-
cle’s various systems.
Open door warning light
(P. 833)*1Master warning light
(P. 833)
Low fuel level warning
light (P. 8 3 3 )
*1
(if
equipped)
Tire pressure warning
light
(P. 834)
Seat belt reminder light
(P. 833)
Indicators
Turn signal indicator
(P. 264)
(if
equipped)
Automatic High Beam
indicator (P. 277)
Tail light indicator
(P. 272)
(if
equipped)
Front fog light indicator
(P. 283)
Headlight high beam
indicator (P. 272)Rear fog light indicator
(P. 283)
Page 109 of 1014

1082. Instrument cluster
GS450h_300h_OM_OM30D53E_(EE)
*1: These lights turn on when the power switch is turned to ON mode to indi-
cate that a system check is being performed. They will turn off after the
hybrid system is on, or after a few seconds. There may be a malfunction in
a system if the lights do not come on, or turn off. Have the vehicle
inspected by any authorized Lexus dealer or repairer, or another duly qual-
ified and equipped professional.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off. The light flashes faster
than usual to indicate that the system is operating.
*4: In order to confirm operation, the BSM outside rear view mirror indicators
illuminate in the following situations:
• When the power switch is turned to ON mode while the BSM main
switch is set to ON.
• When the BSM main switch is set to ON while the power switch is in
ON mode.
If the system is functioning correctly, the BSM outside rear view mirror
indicators will turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not
turn off, there may be a malfunction with the system.
If this occurs, have the vehicle inspected by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
CAUTION
If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not
come on when you start the hybrid system, this could mean that these sys-
tems are not available to help protect you in an accident, which could result
in death or serious injury. Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped profes-
sional immediately if this occurs.
Page 111 of 1014

1102. Instrument cluster
GS450h_300h_OM_OM30D53E_(EE)
Engine coolant temperature gauge
Displays the engine coolant temperature
Hybrid System Indicator
Displays hybrid system output or regeneration level (P. 1 1 2 )
ECO lamp and SPORT lamp
Changes colors or brightness according to driving mode or way of driving
(P. 113)
Multi-information display
Presents the driver with a variety of driving-related data (P. 1 1 4 )
Speedometer
Displays the vehicle speed
Fuel gauge
Displays the quantity of fuel remaining in the tank
Shift position and shift range
Displays the selected shift position or selected shift range (P. 256)
Odometer and trip meter display
Odometer:
Displays the total distance the vehicle has been driven
Trip meter:
Displays the distance the vehicle has been driven since the meter was last
reset. Trip meters “A” and “B” can be used to record and display different
distances independently.
Tachometer
Displays the engine speed in revolutions per minute
1
2
3
4
5
6
7
8
9
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1122. Instrument cluster
GS450h_300h_OM_OM30D53E_(EE)
The meters and display illuminate when
The power switch is in ON mode.
Instrument panel brightness adjustment
The instrument panel brightness levels when the tail lights are on and off can
be adjusted individually. However, when the surroundings are bright (day-
time, etc.), turning on the tail lights will not change the instrument 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
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. 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 driven
in an Eco-friendly manner.
Power area
Shows that an Eco-friendly driving
range is being exceeded (during full
power driving etc.)
1
2
3
4
Page 114 of 1014

1132. Instrument cluster
2
Instrument cluster
GS450h_300h_OM_OM30D53E_(EE)
ECO lamp and SPORT lamp
When sport mode is selected, SPORT lamp (red) will illuminate.
When all of the following conditions are satisfied and Eco-friendly driving,
ECO lamp (blue) will illuminate. (ECO lamp will become brighter the more
Eco-friendly driving you perform. Also, while the vehicle is stopped or the
acceleration exceeds Zone of Eco driving, ECO lamp turns off. P. 1 1 2 ]
However, when Eco drive mode is selected, while the vehicle is stopped or
the acceleration exceeds Zone of Eco driving, ECO lamp does not turn off.):
• Driving with the shift lever in D
• Paddle shift switch is not operated.
• Either normal mode or Eco drive mode is selected.
• The vehicle speed is approximately 130 km/h (80 mph) or below.
Tachometer
Hybrid System Indicator switches to the tachometer when driving mode is in
sport mode.
Engine speed
On hybrid vehicles, engine speed is precisely controlled in order to help
improve fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may differ even
when vehicle operation and driving conditions are the same.
Customization
Settings (e.g. on/off operation of ECO lamp) can be changed.
(Customizable features: P. 944)
NOTICE
To prevent damage to the engine and its components
Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (P. 915)