2017 Lexus GS300h air condition

489
7-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE) Carrying out the corresponding action turns the messages off.
Air conditioning, heater and other operations are tem-
porarily limited due to high power consumption 
Turn off unnecessary electronic equipment to
reduce power consumption.
Please wait until the power supply returns to nor-
mal.
If this item is frequently displayed, have the vehicle
inspected by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer imme-
diately.
(If equipped)
Indicates that part of the PC S (Pre-Crash Safety system)
sensor is dirty, covered with ice, etc.
A buzzer also sounds.
 Remove any dirt, ice, etc.
Other displayed messages
Warning messageDetails/Actions
(Flashes)
(Flashes)
Warning messageDetails/Actions
Maintenance of the hybrid battery (traction battery)
cooling component is required
The filter may be clogged, the air intake vent may be
blocked or there may be a gap in the duct.
 Have maintenance performed on the hybrid battery
(traction battery) cooling component at any autho-
rized Lexus retailer or Lexus authorized repairer, or
any reliable repairer.

535
7
7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( P. 104) enters the
red zone or a loss of hybrid system power is experienced. (For example, the
vehicle speed does not increase.)
● “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” or
“Hybrid System Overheated Reduced Output Power” ( P. 466) is shown on
the multi-information display.
● Steam comes out from under the hood.
■If the needle of the engine coolant temperature gauge enters the red zone
or “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
shown on the multi-information display
Stop the vehicle in a safe place and turn off the air conditioning 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.
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 any autho-
rized Lexus retailer or Lexus
authorized repairer, or any reli-
able repairer.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

537
7-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE) Start the hybrid system and turn the air conditioning system on to check
that the radiator cooling fans operate and to check for coolant leaks from
the radiator or hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are op
erating by checking the fan sound and air
flow. If it is difficult to check these, tu rn the air conditioning system on and off
repeatedly. (The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
■If “Hybrid System Overheated Reduced Output Power” is shown on the
multi-information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and radiator
core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho-
rized Lexus retailer or Lexus
authorized repairer, or any reli-
able repairer.
6
7
1
2
3
1
2

5708-2. Customization
GS450h_300h_OM_OM30F92E_(EE)
■Lexus parking assist-sensor *1, 2
* 1
:If equipped
* 2
: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MAN-
UAL”.
■Driving mode select switch (vehicles with Adaptive Variable Suspension
system) ( P. 312)
FunctionDefault
settingCustomized setting
Detection distance of the front
center sensorFarNearO—O
Detection distance of the rear
center sensorFarNearO—O
Buzzer volume31 to 5O—O
Display setting
(when Lexus parking assist-
sensor is operating)All sensors displayedDisplay offO—O
123
FunctionDefaultsettingCustomized setting
Power train controlNormalPowerO——Eco
Chassis controlNormalSportO——
Air conditioning operationNormalEcoO——
123

571
8
8-2. Customization
Vehicle specifications
GS450h_300h_OM_OM30F92E_(EE)
■Automatic air conditioning system (P. 346)
■Front seat heaters (without seat ventilators) * ( P. 363)
* : If equipped
FunctionDefault
settingCustomized setting
Switching between outside air
and recirculated air mode
linked to “AUTO” switch * oper-
ation
OnOffO—O
A/C Auto switch operationOnOffO—O
Exhaust gas sensor sensitivityStandard-3 to 3O—O
* : This is the switch for turning on and off the auto-
matic mode of the air conditioning system, not
the outside air or recirculated mode switch.
123
FunctionDefaultsettingCustomized setting
Automatic operation of front
seat heaterOffOn——O
123

578What to do if... (Troubleshooting)
GS450h_300h_OM_OM30F92E_(EE)
What to do if... (Troubleshooting)
● 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. ( P. 136)
● If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact any authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer immediately. ( P. 137)
● Is the electronic key battery weak or depleted? ( P. 435)
● Vehicles with entry function
Is the power switch in ON mode?
When locking the doors, turn the power switch off. ( P. 218)
● Vehicles with entry function
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your person.
● The function may not operate properly due to the condition of the radio wave.( P. 155)
● Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock. ( P. 143)
If you have a problem, check the following before contacting any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
The doors cannot be locked, un locked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

582Alphabetical index
GS450h_300h_OM_OM30F92E_(EE)
Alphabetical index
A/C ............................................................ 346
Air conditioning filter........................ 433
Changing the rear seat settings.................................................353
Front automatic air
conditioning system ...................... 346
nanoe™ system ..................................356
Pollen removal mode ...................... 352
Rear air conditioning system ...... 358
S-FLOW mode.................................. 347
ABS (Anti-lock Brake System) ....... 324
Function .................................................. 324
Warning light .........................................461
Warning message.............................466
Adaptive Front-lighting System
(AFS) ..................................................... 239
Adaptive Variable Suspension
system (AVS) ...................................... 325
AFS (Adaptive Front-lighting
System) .................................................. 239
AHS (Adaptive High-beam
System) ................................................... 241
Air conditioning filter .......................... 433
Air conditioning system ..................... 346 Air conditioning filter........................ 433
Changing the rear seat settings.................................................353
Front automatic air conditioning system ...................... 346
nanoe™ system ..................................356
Pollen removal mode ...................... 352
Rear air conditioning system ...... 358
S-FLOW mode.................................. 347 Airbags ........................................................ 43
Airbag manual on-off system......... 54
Airbag operating conditions ...........49
Airbag precautions for
your child .............................................. 45
Airbag warning light ........................ 460
Correct driving posture.................... 36
Curtain shield airbag operating
conditions ..............................................49
Curtain shield airbag
precautions ........................................... 47
General airbag precautions ........... 45
Locations of airbags ............................43
Modification and disposal of
airbags.................................................... 48
Side airbag operating
conditions ..............................................49
Side airbag precautions .................... 45
Side and curtain shield airbags operating conditions ........................49
Side and curtain shield airbags precautions .......................................... 45
SRS airbags ..............................................43
Airbag manual on-off system ............. 54
Alarm .............................................................. 91 Alarm ............................................................ 91
Warning buzzer.....................460, 466
Anchor brackets ...................................... 66
Antennas (smart entry & start system) .........................................153
Anti-lock Brake System (ABS)....... 324 Function...................................................324
Warning light......................................... 461
Warning message ............................ 466
A

587
Alphabetical index
GS450h_300h_OM_OM30F92E_(EE) Engine coolant temperature
gauge....................................................... 105
Engine oil..................................................406 Capacity ................................................ 550
Checking .............................................. 406
Oil level warning message ...........466
Oil pressure warning message..............................................466
Preparing and checking before winter .................................... 334
Engine switch ...........................................217 Auto power off function ...................219
Changing the power switch modes ................................................... 218
If your vehicle has to be stopped in an emergency..........453
Starting the hybrid system............... 217
EPS (Electric Power Steering)........ 325
Function .................................................. 325
Warning light .........................................461
Warning message.............................466
EV drive mode ....................................... 222
First-aid kit storage net....................... 375
Flat tire
Vehicles with spare tire ................. 498
Vehicles without spare tire .......... 509
Floor mats ................................................... 34
Fluid Brake........................................................554
Hybrid transmission .........................553
Washer ...................................................... 411 Fog lights .................................................. 250
Replacing light bulbs ....................... 449
Switch ...................................................... 250
Follow me home system .................... 238
Footwell light .......................................... 366
Front air conditioning system .......... 346
Front fog lights ....................................... 250 Replacing light bulbs ....................... 449
Switch ...................................................... 250
Wattage ................................................. 449
Front personal lights............................ 367
Front position lights ............................. 237 Light switch............................................ 237
Replacing light bulbs ....................... 449
Welcome light illumination control ................................................... 140
Front seats ................................................. 175 Adjustment ............................................. 175
Cleaning ................................................ 394
Correct driving posture.................... 36
Driving position memory ................ 178
Head restraints .....................................183
Power easy access system............. 178
Seat heaters.......................................... 362
Seat position memory ....................... 178
Seat ventilators ................................... 362
Front turn signal lights ..........................231 Replacing light bulbs ........... 443, 449
Turn signal lever................................... 231
Wattage .................................................558
F
*: Refer to the “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.