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5337-2. Steps to take in an emergency
GS450h_OM_OM30F70U_(U)
7
When trouble arises
Carrying out the corresponding action turns the messages off.
*: For the EV drive mode operating conditions: →P. 2 0 0
Other displayed messages
Displayed messageDetailsCorrection procedure
Maintenance of the
hybrid system (traction
battery) cooling compo-
nent is required
The filter may be
clogged, the air vent
may be blocked or
there may be a gap in
the duct.
Have maintenance per-
formed on the hybrid sys-
tem (traction battery)
cooling component at
your Lexus dealer.
Indicates that the EV
drive mode is not avail-
able
*
The reason the EV
drive mode is not avail-
able (the vehicle is
idling, battery charge is
low, speed is higher
than the EV drive
mode operating speed
range, accelerator
pedal is depressed too
much) may be dis-
played.
Use the EV drive mode
when it becomes avail-
able.
Indicates that the EV
drive mode has been
automatically canceled
*
The reason the EV
drive mode is not avail-
able (the battery
charge is low, speed is
higher than the EV
drive mode operating
speed range, accelera-
tor pedal is depressed
too much) may be dis-
played.
Drive the vehicle for a
while.
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5357-2. Steps to take in an emergency
GS450h_OM_OM30F70U_(U)
7
When trouble arises
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
OnceCon-
tinuous
An attempt was
made to exit the
vehicle with the
electronic key and
lock the doors with-
out first turning the
power switch off
when the shift lever
was in P.
Tu r n t h e
power
switch off
and lock the
doors again.
9
times
An attempt was
made to drive when
the regular key was
not inside the vehi-
cle.Confirm
that the
electronic
key is inside
the vehicle.
Con-
tinuous
The driver’s door
was opened when
the shift lever was
not in P and the
power switch was
not turned off.
Shift the
shift lever to
P.
(Displayed alternately)
(Flashes)
(Flashes)
(Flashes)
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Page 537 of 654
5367-2. Steps to take in an emergency
GS450h_OM_OM30F70U_(U)
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
Con-
tinuousCon-
tinuous
The driver’s door
was opened and
closed while the
electronic key was
not in the vehicle,
the shift lever was
not in P and the
power switch was
not turned off.•Shift the shift lever
to P.
•Bring the elec-
tronic key
back into
the vehi-
cle.
OnceCon-
tinuous
• An attempt wasmade to lock the
doors using the
smart access sys-
tem with push-
button start while
the electronic
key was still
inside the vehicle.
• An attempt was made to lock
either front door
by opening a
door and putting
the inside lock
button into the
lock position,
then closing the
door with the
electronic key
still inside the
vehicle.
Retrieve the
electronic
key from the
vehicle and
lock the
doors again.
(Displayed alternately)
(Flashes)
(Flashes)
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Page 561 of 654
5607-2. Steps to take in an emergency
GS450h_OM_OM30F70U_(U)
■Tr u n k
Turn the mechanical key clock-
wise to open.
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of
the electronic key to the power
switch.
The power switch will turn to ON
mode.
When the smart access system with
push-button start is deactivated in
customization setting, the power
switch will turn to ACCESSORY
mode.
Firmly depress the brake pedal and check that is shown on the
multi-information display.
Press the power switch.
In the event that the hybrid system still cannot be started, contact your
Lexus dealer.
Starting the hybrid system
1
2
3
4
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566
GS450h_OM_OM30F70U_(U)
7-2. Steps to take in an emergency
If your vehicle overheats
■If the needle of the engine coolant temperature gauge enters the red
zone
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect the
hoses and cooling system for leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact your
Lexus dealer.
The following may indicate that your vehicle is overheating.
●The needle of the engine coolant temperature gauge ( →P. 91) enters
the red zone or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
●“Hybrid System Overheat” ( →P. 527) is shown on the multi-informa-
tion display.
●Steam comes out from under the hood.
Correction procedures
1
2
3
1
2
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5697-2. Steps to take in an emergency
GS450h_OM_OM30F70U_(U)
7
When trouble arises
Start the hybrid system and check for the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
■When adding coolant
Add coolant in accordance with the following procedure.
Remove caps A and B.
Add coolant through the inlet of cap A up to the B-line, and then
install cap A.
Add coolant through the inlet of cap B until it is full, and then install
cap B.
Cap A
Cap B
B-line (Target fill line)
6
1
2
3
1
2
3
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600
GS450h_OM_OM30F70U_(U)
8-2. Customization
Some function settings are changed simultaneously with other functions
being customized. Contact your Lexus dealer for further details.
Settings that can be changed using the Remote Touch
Settings that can be changed using the “DISP” button
Settings that can be changed by your Lexus dealer
Definition of symbols: O = Available, — = Not available
Customizable features
1
2
3
ItemFunctionDefaultsettingCustomized setting
Hybrid
system
(→ P. 7 2 )Vehicle proximity noti-
fication system (sound
volume)
Level 0
Level +1
——OLevel +2
Multi-infor-
mation
display
(→ P. 9 6 )
Language*1EnglishFrench—O—Spanish
Units*1miles
(MPG)
km
(km/L)
—O—km
(L/100km)
ECO lamp
ON
(Self-light- ing)Off
—O—On
(Always)
Drive monitorOutside
Fuel
consumption
—O—Cruising range
Tachometer Settings
On
(Self-
changing)
Hybrid System Indicator (Always)
—O—
Tachometer (Always)
Lamp brightnessStandardBright—O—
SPORT lampOnOff—O—
123
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GS450h_OM_OM30F70U_(U)
6018-2. Customization
8
Vehicle specifications
Multi-infor-
mation
display
(→ P. 9 6 )“EV driving Indicator”“ON”“OFF”—O—
“Default settings”“OFF”“ON”—O—
Door lock
(→ P. 1 3 9 ,
559)
Unlocking on second
key turn
(Allows all doors to be
unlocked by turning the
mechanical key twice
in the driver’s door)
On
(Driver’s door
unlocked in
one step, all doors
unlocked in two steps)
Off
(All doors
unlocked in one step)
O—O
Automatic door lock
Shifting the shift lever
to position other than POff
O—O
Vehicle speed is approxi-
mately 12 mph (20 km/h) or higher
Automatic door unlock
Shifting the shift lever to POff
O—ODriver’s door is opened
Locking/unlocking of
the trunk when all
doors are locked/
unlocked
OnOff——O
ItemFunctionDefaultsettingCustomized setting123
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