heating Lexus GS300h 2013 User Guide

4925-2. Using the air conditioning system and defogger
GS450h_300h_OM_OM30D53E_(EE)
The windows may fog up if the recirculated air mode is used.
Outside/recirculated air mode
When driving on dusty roads such as tunnels or in heavy traffic, set the out-
side/recirculated air mode button to the recirculated air mode. This is effec-
tive in preventing outside air from entering the vehicle interior. During
cooling operation, setting the recirculated air mode will also cool the vehi-
cle interior effectively.
Outside/recirculated air mode may automatically switch depending on the
temperature setting or the inside temperature.
Automatic mode for air intake control
In automatic mode, the system detects exhaust gas and other pollutants and
automatically switches between outside air and recirculated air modes.
When the dehumidification function is off, and the fan is operating, turning
automatic mode on will activate the dehumidification function.
Pollen removal mode
In order to prevent the windshield from fogging up when the outside air is
cold, the following may occur:
• Outside air mode does not switch to (recirculated air) mode.
• The dehumidification function operates.
• The operation cancels after approximately 1 minute.
In rainy weather, the windows may fog up. Press .
In extremely humid weather, the windows may fog up.
The pollens are filtered out even if the pollen removal mode is turned off.
Operation of the air conditioning system in Eco drive mode
In the Eco drive mode, the air conditioning system is controlled as follows to
prioritize fuel efficiency:
Engine speed and compressor operation controlled to restrict heating/cool-
ing capacity
Fan speed restricted when automatic mode is selected
To improve air conditioning performance, perform the following opera-
tions:
Adjust the fan speed
Turn off Eco drive mode
When the S-FLOW mode operates
If air flows to the driver’s seat only, the temperature setting for the front pas-
senger’s seat is not displayed.
When the outside temperature falls to nearly 0C (32F)

7085-7. Other interior features
GS450h_300h_OM_OM30D53E_(EE)
The seat heaters/seat ventilators can be used when
The power switch is in ON mode.
Seat heater control (vehicles without automatic mode)
The seat heater automatically changes operations. If the power switch is
turned off while the seat heater is operating, the starting operation of the
heater differs depending on the amount of time that elapses before it is turned
back on.
Automatic operation of the seat heater during Eco drive mode
Eco drive mode controls the heating operations and fan speed of the air con-
ditioning system to enhance fuel efficiency. If the driving mode select switch
is switched to Eco drive mode in cold temperatures, the seat heater may be
automatically operated to assist heating performance.
Automatic operation during S-FLOW mode
The front seat heater and ventilator or the rear seat heater may automatically
turn off when S-FLOW mode is turned on during automatic mode. (P. 488)
Current operation
Starting operation mode and amount of time
elapsed until power switch in ON mode
0 to 15 minutesOver 15 minutes
HiHiHi
MidMidHi
LoLoHi

7095-7. Other interior features
5
Interior features
GS450h_300h_OM_OM30D53E_(EE)
Button lock function (vehicles with rear control panel)
To prevent inadvertent operation, some buttons on the rear armrest can be
locked. (P. 500)
When the switch is disabled (vehicles with rear control panel)
When the rear control panel switch cannot be operated even though the but-
ton lock function is released, check whether the switch is disabled due to
pressing on Remote Touch screen. (P. 488)
Rear control panel illumination off function (vehicles with rear control panel)
Control panel illumination on the rear armrest can be turned off. (P. 500)
Customization
The automatic operation of the front seat heaters (without seat ventilators)
and the automatic mode settings for the front seat heaters and ventilators or
the rear seat heaters can be changed. (Customizable features: P. 950)
CAUTION
Burns (vehicles with seat heaters)
Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
Do not use seat heater more than necessary. Doing so may cause minor
burns or overheating.

8627-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
After taking the specified steps to correct the suspected problem,
check that the warning message and light go off.
(If equipped)
Indicates that the pre-
crash safety system is
not currently functional
because the grille cover
or the sensor is dirty
This message also
appears when the
pre-crash safety sys-
tem is not functional
due to overheating.• Check the grille
cover and the sensor
and clean them if
they are dirty.
• In case of overheat-
ing, the system will
become functional
once the system
cools down.
Have the malfunction repaired immediately.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
Inte-
rior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Once
The electronic
key is not
detected when an
attempt is made to
start the hybrid
system.Start the
hybrid sys-
tem with
the elec-
tronic key
present.
(Flashes)

9177-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
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 condition-
ing system, 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.
The following may indicate that your vehicle is overheating.
The needle of the engine coolant temperature gauge (P. 109)
enters the red zone or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
“Hybrid System Overheat” (P. 856) is shown on the multi-
information display.
Steam comes out from under the hood.
Correction procedures
1
2

965Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Child safety .................................58
12-volt battery
precautions .................752, 916
Airbag precautions..................47
Child restraint system .............59
How your child should
wear the seat belt ............39, 41
Installing child restraints ........71
Moon roof precautions .........221
Power window lock switch...215
Power window precautions...217
Rear door child-protectors ....184
Removed electronic key
battery precautions .............781
Seat belt comfort guide...........39
Seat belt precautions ...............43
Seat heater precautions .........703
Trunk precautions ................190
Child-protectors ........................184
Cleaning ............................720, 724
Aluminum wheels.................721
Exterior .................................720
Interior ..................................724
Seat belts...............................725Clock ........................................ 698
Coat hooks ................................ 715
Condenser ................................ 747
Console box .............................. 690
Console box light...................... 690
Coolant ..................................... 744
Capacity ............................... 933
Checking .............................. 744
Preparing and checking
before winter ..................... 434
Cooling system ......................... 744
Engine overheating .............. 917
Hybrid system overheating .. 917
Cruise control
Cruise control ...................... 298
Dynamic radar cruise control ....
302
Dynamic radar cruise control
with full-speed range ......... 319
Cup holders............................... 691
Curtain shield airbags ................ 45
Customizable features .............. 943

968Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Emergency brake signal ............399
Emergency flashers ...................820
Emergency tire puncture
repair kit ..................................885
Energy monitor..........................131
Engine .......................................928
Accessory mode....................247
Compartment ........................738
Engine switch .......................246
Hood .....................................734
How to start the hybrid
system.................................246
Identification number ...........928
Ignition switch
(power switch)....................246
Overheating ..........................917
Power switch ........................246
Engine compartment cover........740
Engine coolant ...........................744
Capacity ................................933
Checking ...............................744
Preparing and checking
before winter ......................434
Engine coolant temperature
gauge .......................................109
Engine oil ..................................741
Capacity ................................930
Checking ...............................741
Oil level warning message....853
Oil pressure warning
message ..............................841
Preparing and checking
before winter ......................434Engine switch ........................... 246
EPS (Electric Power Steering) . 398
Function ............................... 398
Warning light ....................... 833
Warning message................. 845
EV drive mode.......................... 254
First-aid kit storage net ............. 694
Flat tire
Vehicles with a spare tire..... 871
Vehicles without a spare tire 885
Floor mats ................................... 34
Fluid
Brake.................................... 935
Hybrid transmission............. 934
Washer ................................. 748
Fog lights .................................. 283
Replacing light bulbs ... 805, 818
Switch .................................. 283
Wattage ................................ 940
Follow me home system ........... 273
Footwell light ........................... 684
Front air conditioning system ... 478
Front fog lights ......................... 283
Replacing light bulbs ... 805, 818
Switch .................................. 283
Wattage ................................ 940
Front personal lights ................. 685
Front position lights.................. 272
Light switch ......................... 272
Replacing light bulbs ........... 818
Welcome light illumination
control ............................... 143
F

970Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Hood ..........................................734
Open .....................................734
Warning message..................848
Hooks
Cargo hooks ..........................694
Coat hooks ............................715
Luggage hook .......................694
Retaining hooks (floor mat) ...34
Utility hook...........................717
Horn...........................................275
Hybrid battery (traction battery) .84
Hybrid battery (traction battery)
air vents .....................................85
Hybrid system .............................80
Emergency shut off system ....85
Energy monitor/
consumption screen ............130
EV drive mode......................254
High voltage components .......84
Hybrid System Indicator ......112
Hybrid system precautions .....84
Hybrid vehicle driving tips ...432
If the hybrid system
will not start .......................904
Overheating ..........................917
Power (ignition) switch ........246
Starting the hybrid system ....246
Hybrid System Indicator ...........112
Hybrid transmission ..................258
If the shift lever cannot be
shifted from P .....................906
Paddle shift switches ............261
S mode ..................................263Identification ............................ 927
Engine .................................. 928
Vehicle ................................. 927
Ignition switch (power switch) . 246
Illuminated entry system .......... 686
Immobilizer system .................... 91
Indicators .................................. 106
Initialization
Moon roof ............................ 220
Power windows.................... 216
Tire pressure warning
system................................ 757
Initiators (tire pressure warning
system) ................................... 769
Inside door handle lights .......... 684
Inside rear view mirror ............. 208
Instrument panel light control .. 111
Interior lights ............................ 684
Intrusion sensor and tilt sensor . 100
ISOFIX rigid anchors ................. 71I

973Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Multi-information display .........114
Dynamic radar cruise
control ................................302
Dynamic radar cruise control
with full-speed range..........319
Energy monitor .....................131
Lane-Keeping Assist ............342
Language ..............................118
Switching the display ...........115
Trip information ...................115
Warning message..................839
nanoe system ..........................494
Navigation system
*
Odometer ...................................109
Oil
Differential oil ......................935
Engine oil .............................930
Opener
Hood .....................................734
Trunk ....................................187
Outer foot lights
Location ................................684
Replacing light bulbs ............814
Wattage .................................940Outside rear view mirrors ......... 211
Adjusting and folding .......... 211
BSM (Blind Spot Monitor) .. 418
Linked mirror function
when reversing .................. 213
Mirror position memory ...... 199
Outside rear view mirror
defoggers .......................... 501
Outside temperature display ..... 115
Overheating .............................. 917
Paddle shift switches ................ 261
Parking assist sensors ............... 348
Parking brake............................ 269
If the parking brake cannot
be released ......................... 907
Operation ............................. 269
Parking brake engaged
warning buzzer .................. 850
Parking brake engaged
warning message ............... 850
PCS
(Pre-Crash Safety system)...... 406
Function ............................... 406
PCS OFF switch .................. 408
Warning light ....................... 833
Warning message. 842, 855, 862
Personal lights .......................... 685
Pollen removal mode ................ 488
Power control unit ...................... 84
N
O
P
*: For vehicles with a navigation system, refer to the
“Navigation System Owner’s Manual”.