2018 Lexus GS450h air condition

461
GS450h_OM_OM30G62U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( →P. 88) enters the red
zone or a loss of hybrid system power is experienced. (For example, the vehi-
cle 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. 410) 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 your Lexus
dealer.
The following may indicate that your vehicle is overheating.
Correction procedures
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4627-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines
on the reservoir.
Reservoir
“FULL”
“LOW”
Coolant inlet cap
Add coolant if necessary.
(→ P. 464)
Water can be used in an emergency
if engine coolant is unavailable.
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 operating 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 your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
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GS450h_OM_OM30G62U_(U)
4898-1. Specifications
8
Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing the tire’s
resistance to the generation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the ma terial of the tire to degenerate and
reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of perfor mance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory test
wheel than the minimum required by law.
Warning: The temperature grades of a tire assume that it is properly inflated and
not overloaded.
Excessive speed, underi nflation, or excessive loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of hybrid transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are avail-
able as factory-installed eq uipment (whether installed
or not)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows

502
GS450h_OM_OM30G62U_(U)
8-2. Customization
■Intuitive parking assist*1, 2
*1: If equipped
*2: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
■Driving mode select switch (→P. 258)
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 intuitive parkin g assist is operat-
ing)All sensors displayedDisplay offO—O
123
FunctionDefault
settingCustomized setting
Power train controlNormalPowerO——Eco
Chassis controlNormalSportO——
Air conditioning operationNormalEcoO——
123

GS450h_OM_OM30G62U_(U)
5038-2. Customization
8
Vehicle specifications
■Automatic air conditioning system (→P. 287)
■Front seat heaters and ventilators/rear seat heaters* (→ P. 302)
*: If equipped
FunctionDefault
settingCustomized setting
A/C Auto switch operationOnOffO—O
Exhaust gas sensor informationStandard-3 to 3O—O
123
FunctionDefaultsettingCustomized setting
Adjustment of the front seat heater tem-
perature or the ventilator fan speed
during automatic operation (individual
seat adjustment available)
Level 3
(standard)Level 1 (low) to level 5 (high)O—O
Adjustment of the re ar seat heater tem-
perature during automatic operation
(individual seat ad justment available)Level 3
(standard)
Level 1
(low) to level 5 (high)
O—O
Rear seat heater start-up conditions
when the power switch is in ON mode
(individual seat adju stment available)
OffOn
(AUTO)O—O
123

528Alphabetical index
GS450h_OM_OM30G62U_(U)
Alphabetical index
A/C ............................................................ 287Air conditioning filter....................... 380
Changing the rear seat settings .................................................294
Front automatic air conditioning system ..................................................287
Micro dust and pollen filter ...........293
Rear air conditioning system....... 298
S-FLOW mode ................................. 288
ABS (Anti-lock Brake System)....... 268 Function ................................................. 268
Warning light ...................................... 404
Warning message .............................. 410
Adaptive Front-lighting System (AFS) ....................................................... 201
Adaptive Variable Suspension system (AVS)...................................... 269
AFS (Adaptive Front-lighting System) ................................................... 201
Air conditioning filter ..........................380
Air conditioning system ..................... 287 Air conditioning filter....................... 380
Changing the rear seat settings .................................................294
Front automatic air conditioning system ..................................................287
Micro dust and pollen filter ...........293
Rear air conditioning system....... 298
S-FLOW mode ................................. 288 Airbags ........................................................ 35
Airbag operating conditions ...........42
Airbag precautions for your child ....................................... 38
Airbag warning light ........................ 404
Correct driving posture .................... 28
Curtain shield airbag operating conditions ........................42
Curtain shield airbag precautions .......................................... 40
Front passenger occupant classification system......................... 46
General airbag precautions ........... 38
Locations of airbags............................ 35
Modification and disposal of airbags................................................. 41
Side airbag operating conditions ..............................................42
Side airbag precautions .................... 38
Side and curtain shield airbags operating conditions ........................42
Side and curtain shield airbags precautions .......................................... 38
SRS airbags ............................................. 35
Alarm ............................................................ 77 Alarm ........................................................... 77
Warning buzzer...................... 404, 410
Anchor brackets....................................... 57
Antennas (smart access system with push-button start) ..................... 135
Anti-lock Brake System (ABS) ...... 268 Function .................................................. 268
Warning light ....................................... 404
Warning message...............................410
A

534Alphabetical index
GS450h_OM_OM30G62U_(U)
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ....................................... 150
Headlight cleaner.......................208, 210
Headlights ...............................................200 Adaptive Front-lighting System (AFS) .................................... 201
Headlight leveling warning message ............................ 410
Light switch .......................................... 200
Replacing light bulbs ........................393
Headlights aim ............................. 389, 521
Head-up display..................................... 103
Heated steering wheel ........................ 301
Heaters Air conditioning system ..................287
Heated steering wheel ................... 302
Seat heaters ......................................... 302
Outside rear view mirrors .............293
High-voltage components .................. 70
Hood ........................................................... 351 Open ......................................................... 351
Warning message .............................. 410
Hooks Cargo hooks ..........................................312
Coat hooks .......................................... 320
Luggage hook .......................................312
Retaining hooks (floor mat) ............. 26 Horn............................................................. 153
Hybrid battery (traction battery)
Location .................................................... 70
Specification ..........................................472
Hybrid battery (traction battery) air vents .....................................................70
Hybrid system............................................66 Emergency shut off system ............... 71
Energy monitor/consumption screen...................... 109
EV drive mode .....................................187
High voltage components ............... 70
Hybrid System Indicator ................... 92
Hybrid system precautions ............. 70
Hybrid vehicle driving tips .............274
If the hybrid system will not start .......................................450
Overheating...........................................461
Power (ignition) switch.....................182
Regenerative braking ..........................67
Starting the hybrid system...............182
Vehicle proximity notification system ......................................................67
Hybrid System Indicator .......................92
Hybrid transmission ..............................189 If the shift lever cannot be shifted from P ..............193
Paddle shift switches........................... 191
S mode...................................................... 192
H

539Alphabetical index
GS450h_OM_OM30G62U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 243
Radiator .................................................... 359
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 298
Rear door sunshades ........................... 318
Rear personal lights.............................305
Rear side marker lights ......................200 Light switch .......................................... 200
Replacing light bulbs ........................393
Welcome light illumination cont rol ..........................123
Rear seat heaters.................................. 302
Rear sunshade ........................................ 318 Operation ............................................... 318
Reverse operation feature.............. 319
Rear turn signal lights .......................... 195 Replacing light bulbs ........................393
Turn signal lever .................................. 195
Rear view mirror Inside rear view mirror ..................... 154
Outside rear view mirrors .............. 156
Rear view monitor system
*
Rear window defoggers .................... 293
Refueling ....................................................213 Capacity ................................................. 472
Fuel types ............................................... 472
Opening the fuel tank cap...............214
When the fuel filler door cannot be opened .......................... 215 Regenerative braking............................. 67
Remote Touch
*.................................... 282
Replacing Electronic key battery ..................... 382
Fuses ........................................................384
Light bulbs...............................................391
Tires ............................................................ 441
Reporting safety defects for U.S. owners ....................................510
Resetting the message indicating maintenance is required .................344
Rev indicator ............................................. 90
Rev peak ..................................................... 90
Road accident cautions ......................... 72
Seat belts .................................................... 30 Adjusting the seat belt........................ 30
Automatic Locking Retractor .......... 31
Child restraint system installation ............................................. 59
Cleaning and maintaining the seat belt ......................................... 341
Emergency Locking Retractor (ELR) ................................... 31
How to wear your seat belt............. 30
How your child should wear the seat belt ...........................................32
Pregnant women, proper seat belt use ......................................... 33
Reminder light and buzzer ...........406
Seat belt extender .................................32
Seat belt pretensioners........................ 31
SRS warning light .............................. 404
R
S
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.