2019 LEXUS LS500 fuel consumption

314 5-3. Using the air conditioning system and defogger
LS500_OM_(U)_1810 ■
Changing the air flow mode
 P.316 ■
Switching between outside air and
recirculated air modes
Press the outside/recirculated air
mode switch. The mode changes as follows each time
the switch is pressed.
automatic mode  (outside air
mode)  (recirculated air mode)
 automatic mode
When the system is switched to automatic
mode, the air conditioning system operates
automatically. ■
Defogging the windshield
Defoggers are used to defog the wind-
shield and front side windows.
Press the windshield defogger switch. Set the outside/reci rculated air mode
switch to outside air mode if the recircu-
lated air mode is used. (It may switch auto-
matically.)
To defog the windshield and the side win-
dows quickly, turn the air flow and tem-
perature up.
To return to the previous mode, press the
windshield defogger switch again when the
windshield is defogged.
■
Defogging the rear window and
outside rear view mirrors
Defoggers are used to defog the rear
window, and to remove raindrops, dew
and frost from the outside rear view
mirrors.
Press the rear window and outside rear
view mirror defoggers switch.
The defoggers will automatically turn off after a while. The operation time changes
according to the ambient temperature and
vehicle speed. ■
Windshield wiper de-icer (if
equipped)
 P.319 ■
When the outside temperature exceeds
75°F (24°C) and the air conditioning
system is on ●
In order to reduce the air conditioning
power consumption, the air conditioning
system may switch to recirculated air
mode automatically. This may also
reduce fuel consumption. ●
It is possible to switch to outside air mode
at any time by pressing the outside/recir-
culated air mode switch. ■
Fogging up of the windows
The windows will easily fog up when the
humidity in the vehicle is high. Turning
“A/C” on will dehumidify the air from the
outlets and defog the windshield effectively. ●
If you turn “A/C” off, the windows may
fog up more easily. ●
The windows may fog up if the recircu-
lated air mode is used. ■
Outside/recirculated air mode ●
When driving on dusty roads such as tun-
nels or in heavy traffic, set the out-
side/recirculated air mode switch to the
recirculated air mode. This is effective in
preventing outside air from entering the
vehicle interior. During cooling opera-
tion, setting the recirc ulated air mode will
also cool the vehicle interior effectively.
●
Outside/recirculated air mode may auto-
matically switch depending on the tem-
perature setting or the inside
temperature.
■
Registering air conditioning settings to
electronic keys
●
Unlocking the vehicle using an electronic
key and turning the engine switch to
IGNITION ON mode will recall that
key’s registered air conditioning settings.

498 Alphabetical Index
LS500_OM_(U)_1810 Brightness control
Instrument panel light control ........75, 79
BSM (Blind Spot Monitor)....................... 250
Buzzer
Hands off steering wheel alert (LTA)
............................................................. 236, 236 C
Card key ............................................................ 96
Care
Aluminum wheels ..................................... 358
Exterior .......................................................... 358
Interior ...............................................................361
Seat belts..........................................................361
Cargo capacity............................................... 162
Cargo net ....................................................... 340
Center Display ............................................. 306
Chains ............................................................... 301
Child restraint system
Fixed with a LATCH system .................. 53
Fixed with a seat belt................................... 49
Front passenger occupa nt classification
system ............................................................. 40
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation
method ........................................................... 46
Using an anchor bracket .......................... 55
Child safety
Airbag precautions...................................... 34
Battery precautions ....................... 381, 439
Child restraint system................................. 46
Heated steering wheel and seat heater
precautions................................................ 327
How your child should wear the seat belt
............................................................................ 25
Moon roof precautions ............................146
Panoramic moon roof precautions ... 150
Power window lock switch..................... 144
Power window precautions ................... 143
Rear door child-protectors ................... 103 Removed electronic key battery precau-
tions .............................................................. 400
Seat belt extender precautions.............. 25
Seat belt precautions .................................. 45
Trunk precautions....................................... 104
Child-protectors........................................... 103
Cleaning
Aluminum wheels ..................................... 358
Exterior........................................................... 358
Interior .............................................................. 361
Radar sensor .......................................192, 198
Seat belts ......................................................... 361
Clock ................................................ 73, 76, 345
Clock light ........................................................331
Coat hooks..................................................... 344
Coin holder .................................................... 337
Condenser ..................................................... 378
Console box .................................................. 338
Consumption screen ...................................... 91
Cooling system..............................................377
Engine overheating.................................. 440
Cornering lights .............................................. 181
Cruise control
Dynamic radar cruise control with
full-speed range .......................... 237, 247
Cup holders ................................................... 337
Current fuel consumption .......................... 82
Curtain shield airbags .................................. 29
Customizable features .............................. 466
D
Daytime running light system ................... 179
Defogger
Outside rear view mirrors.......................314
Rear window ..................................................314
Windshield ......................................................314
Differential
Front differential oi l............. ...................... 450
Rear differential oil. .................... ........... ...... 451
Dimension ...................................................... 446
Dinghy towing.................................................163

5011-1. What to do if... (Troubleshooting)
LS500_OM_(U)_1810 501Alphabetical Index
Front side marker light
Light switch ..................................................... 179
Replacing light bulbs................................404
Front turn signal lights
Replacing light bulbs................................404
Turn signal lever ........................................... 173
Fuel
Capacity ......................................................... 447
Fuel gauge ............................................... 73, 76
Fuel pump shut off system ...................... 414
Information ....................................................455
Refueling ......................................................... 189
Type.................................................................. 447
Warning light ................................................ 418
Fuel consumption
Average fuel economy .............................. 82
Current fuel consumption........................ 82
Fuel filler door
If the fuel filler door cannot be opened
......................................................................... 432
Refueling ......................................................... 189
Fuel gauge ..................................................73, 76
Fuel pump shut off system..........................414
Fuses .................................................................. 401
G
Garage door opener ................................. 350
Gauges ........................................................73, 76
Gear Position................................................... 84
G-force............................................................... 84
Glove box ....................................................... 336
Glove box light ............................................. 337
H
Hands Free Power Trunk Lid ...................107
Head restraints ...............................................135
Headlights
Adaptive Front-lighting System (AFS)
............................................................................ 181
Automatic High Beam system..............182
Light switch ..................................................... 179 Replacing light bulbs ............................... 404
Head-up display.............................................. 87
Driving information display area ........... 87
Driving support system display area ..90
Eco Driving Indicator....................................91
HUD (Head-up display) switch ............89
Navigation system-linked display ........ 87
Pop-up display ...............................................90
Settings...............................................................89
Heated steering wheel .............................. 326
Heaters
Front automatic air conditioning system
........................................................................... 313
Heated steering wheel ............................326
Outside rear view mirrors.......................314
Rear automatic air conditioning system
.......................................................................... 323
Seat heaters ..................................................326
Height control
Electronically modulated air suspension
.......................................................................... 292
Hill-start assist control ............................... 295
Hood
Open..................................................................371
Pop Up Hood.................................................38
Hooks
Coat hooks ................................................... 344
Retaining hooks (floor mat) ..................... 22
Horn ................................................................... 138
HUD (Head-up display) switch ................ 89
I
I/M test ............................................................ 368
Identification
Engine.............................................................. 447
Vehicle ............................................................446
Ignition switch (engine switch).................164
Auto power off function........................... 166
Changing the engine switch modes . 166
If your vehicle has to be stopped in an
emergency ................................................ 406
Indicators ........................................................... 70