2019 Lexus GX460 air conditioning

516
GX460_OM_OM60Q84U_(U)7-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle
continually points higher than nor-
mal
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●Engine missing, stumbling or running roughly
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches the floor
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

562
GX460_OM_OM60Q84U_(U)7-2. Steps to take in an emergency
If your vehicle overheats
Stop the vehicle in a safe place and tu
rn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down suff iciently, inspect the hoses and radiator
core (radiator) for any 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. 87) enters the
red zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●Steam is coming from under the hood.
Correction procedures
1
2
3
1
2

5637-2. Steps to take in an emergency
GX460_OM_OM60Q84U_(U)
7
When trouble arises
The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir. Reservoir
“F”
“L”
Radiator cap
Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Start the engine and turn the air conditio ning system on to check that the radi-
ator 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, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
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3
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600
GX460_OM_OM60Q84U_(U)8-2. Customization
■Meters (P. 87)
■Front automatic air conditioning system (P. 390)
*: If equipped
■Driving position memory (P. 139)
FunctionDefault settingCustomized
setting
Sensitivity of the ambient
light sensor used for dim-
ming the meter lights etc.
Standard-2 to 2——O
Sensitivity of the ambient
light sensor used for bright-
ening the meter lights etc.
Standard-2 to 2——O
123
FunctionDefault settingCustomized setting
Switching between outside
air and recirculated air
mode linked to automatic
mode switch operation
*
AutoManual—OO
A/C automatic mode
switch operationAutoManual—OO
Exhaust gas sensor sensitiv-
ityStandard-3 to 3—OO
123
FunctionDefault settingCustomized setting
Driver’s seat movement
when exiting the vehicleFull
Off
—OO
Partial
Selecting the door linking
driving position memory
with door unlock operationDriver’s doorAll doors——O
123

624Alphabetical index
GX460_OM_OM60Q84U_(U)
Alphabetical index
A/C ................................................ 390, 400Air conditioning filter........................487
ABS (Anti-lock Brake System)....... 355 Function ................................................. 355
Warning light ........................................ 518
Active Traction Control .................... 356
Air conditioning filter .......................... 487
Air conditioning system ......... 390, 400 Air conditioning filter........................487
Micro dust and pollen filter .......... 395
Airbags ........................................................ 36 Airbag operating conditions ........... 44
Airbag precautions for your child........................................ 39
Airbag warning light .......................... 518
Correct driving posture .................... 28
Curtain shield airbag operating conditions........................ 44
Curtain shield airbag precautions ........................................... 39
General airbag precautions............ 39
Locations of airbags ............................ 36
Modification and disposal of airbags ............................ 43
Side airbag operating conditions .............................................. 44
Side airbag precautions..................... 39
Side and curtain shield airbags operating conditions........................ 44
Side and curtain shield airbags precautions ........................................... 39
SRS airbags.............................................. 36
SRS warning light................................ 518
Alarm Alarm........................................................... 79
Warning buzzer .................................. 518 Anchor brackets...................................... 59
Antennas (smart access system
with push-button start) ...................... 119
Anti-lock brake system (ABS) ..................................................... 355 Function ..................................................355
Warning light ........................................ 518
Armrest ...................................................... 431
Assist grip .................................................432
Audio input
*
Audio system*
Automatic headlight leveling system ................................... 209
Automatic High Beam ......................... 210
Automatic light control system ...... 206
Automatic transmission.......................198 If the shift lever cannot be shifted from P ................................... 202
S mode....................................................200
AUX port
*
Auxiliary boxes ....................................... 414
AVS ........................................................... 345
Back door ..................................................109
Back-up lights Replacing light bulbs .......................503
Wattage ................................................. 577
Battery .......................................................470 Battery checking ................................ 470
If the vehicle battery is discharged.........................................559
Preparing and checking before winter ..................................... 381
Warning light ........................................ 518
Bluetooth
®*
A
B

628Alphabetical index
GX460_OM_OM60Q84U_(U)
Fuel ............................................................. 570Capacity ................................................ 570
Fuel gauge ................................................ 87
Fuel pump shut off system.............. 517
Information ........................................... 578
Refueling................................................. 225
Type ............................................. 225, 570
Warning light ...................................... 520
Fuel consumption information ........... 96
Fuel filler door ........................................ 225 Refueling................................................. 225
Fuel gauge .................................................. 87
Fuel pump shut off system...................517
Fuses ............................................................491
Garage door opener .......................... 437
Gauges ........................................................ 87
Glass hatch ................................................ 114
Glove box ................................................. 410
Hands-free system (for cellular phone)
*
Head restraints ........................................144
Headlights ............................................... 206 Light switch .......................................... 206
Replacing light bulbs ....................... 498
Wattage .................................................. 577
Headlights cleaner............................... 224
Heaters Automatic air conditioning system .................................... 390, 400
Seat heaters ......................................... 404
Outside rear view mirrors ............ 395 Height control ......................................... 341
Hill-start assist control ....................... 356
Hood ......................................................... 460
Hooks
Cargo hooks ...............................416, 417
Coat hooks ........................................... 432
Retaining hooks (floor mat)............. 26
Horn............................................................. 147
I/M test ..................................................... 456
Identification Engine ..................................................... 570
Vehicle ....................................................569
Ignition switch (engine switch) ......... 193
Ignition switch light .............................. 406
Illuminated entry system ................... 408
Immobilizer system ................................. 77
Indicators .................................................... 82
Initialization Moon roof .............................................. 158
Power windows................................... 155
Inside rear view mirror......................... 149
Instrument panel light control ............ 88
Interior lights .......................................... 406 Switch ...................................................... 407
Wattage ................................................. 577
Jack Vehicle-equipped jack .....................541
Jack handle ............................................. 544
Jam protection function Moon roof .............................................. 158
Power windows................................... 155
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