
518 6-2. Using the air conditio ning system and defogger
RX450h_RX450hL _U_OM48F85U■
Registering air conditioning settings to electronic keys●
Unlocking the vehicle using an electronic key and turning the power switch to ON
mode will recall that ke y’s registered air co nditioning settings.●
When the power switch is turned off, the cu rrent air conditioning settings will automati-
cally be registered to the electronic key that was used to unlock the vehicle. ●
The system may not operate correctly if more th an one electronic key is in the vicinity or
if the smart access system with push-button start is used to unlock a passenger door.●
The doors that can recall the air conditioni ng setting when unlocked using the smart
access system with push-b utton start can be changed.
* For details, contact your Lexus
dealer.
* : The doors that can recall the driving positi on memory are changed at the same time.■
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the ambi-
ent conditions.
Therefore, the fan may stop for a while until wa rm or cool air is ready to flow immediately
after the “AUTO” button is pressed or “AUTO” is selected. ■
How the system judges if a passenger is in the vehicle when in S-FLOW mode
In S-FLOW mode, the system judges if a passenger is in the vehicle as follows:
• Front passenger seat: A passeng er is judged to be in the front passenger seat when the
system detects an object on the front passe nger seat, fastening of the front passenger
seat belt, changing of the set temperature for the front passenger seat or the opening
and closing of the front passenger door. (However, when only opening and closing of
the front passenger door is detected, the sy stem will judge that a passenger is not in
the front passenger seat after the vehicl e speed reaches approximately 12 mph (20
km/h) or more.)
• Rear seats (automatic S-FLOW mode only): A passenger is judged to be in a rear seat
when the system detects the opening and closin g of a rear door or the operation of the
rear air conditioning system (RX450hL).
If a passenger is judged to be in the vehicl e, the system will retain the judgement for a
certain amount of time after th e power switch is turned off.■
Operation of automatic S-FLOW mode
When the system is operating in automati c S-FLOW mode, if the system detects the
opening and closing of a rear door or the op eration of the rear air conditioning system
(RX450hL), S-FLOW mode will be disabled. To enable S-FLOW mode, select
on the option control screen. (In this case , the system will operate in manual S-FLOW
mode.) ■
Changing from manual S-FLOW mode to automatic S-FLOW mode
Select on the option control screen to disable S-FLOW mode.
Turn the power switch off.
Wait for 60 minutes or more and change the power switch to ON mode. ■
Using the voice command system
Air conditioning system can be operated using voic e commands. For details, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”. 1
2
3

742 9-2. Customization
RX450h_RX450hL _U_OM48F85U■
Driving position memory ( → P. 181)
■
Steering wheel ( → P. 189)■
Outside rear view mirrors ( → P. 193)Function Default setting Customized setting
Driver’s seat movement when
exiting the vehicle Standard Off
O O
Partial
Selecting doors linked to the
memory recall function Driver’s door All doors — O 1 2
Function Default setting Customized setting
Auto tilt away function On Off — O 1 2
Function Default setting Customized setting
Automatic mirror folding and
extending operation Linked to the lock-
ing/unlocking of the
doors Off
— O
Linked to operation
of the power switch 1 2

775Alphabetical index
RX450h_RX450hL _U_OM48F85UDrive information .................................. 105
Drive-start control ..................... 213, 249
Driver’s seat belt reminder light ..... 662
Driver’s seat position memory ........... 181
Driving
Break-in tips ...........................................214
Correct posture.....................................30
Driving mode select switch ..........379
Hybrid vehicle driving tips............ 388
Procedures ............................................. 212
Winter drive tips ................................ 390
Driving position memory...................... 181
Memory recall function.................... 184
Power easy access system .............. 181
Dynamic radar cruise control
with full-speed range ....................... 306 E-Four ....................................................... 383
ECB (Electronically Controlled
Brake System) .................................... 382
Eco drive mode......................................379
EDR (Event data recorder).....................11
Electric motor
Location .....................................................74
Specification ........................................... 712
Electric Power Steering (EPS) ....... 383
Warning light .........................................661
Electronic key .......................................... 132
Battery-saving function ....................159
If the electronic key does not
operate properly ............................ 692
Replacing the battery ......................630
Electronically Controlled
Brake System (ECB) ....................... 382
Emergency flashers ............................ 652 E

777Alphabetical index
RX450h_RX450hL _U_OM48F85UFlat tire ...................................................... 673
Floor mats ................................................... 28
Fluid
Brake ..........................................................716
Transmission...........................................716
Washer .................................................. 604
Fog lights
Replacing light bulbs ........................637
Switch.......................................................266
Front automatic air
conditioning system ......................... 507
Front passenger footwell
hooks ...................................................... 557
Front passenger occupant
classification system .............................47
Front passenger’s seat belt
reminder light ..................................... 662
Front seat heaters................................. 526
Front seats ................................................. 167
Adjustment ..............................................167
Cleaning ................................................ 584
Correct driving posture ....................30
Driving position memory .................. 181
Head restraints ..................................... 186
Power easy access system .............. 181
Seat heaters ..........................................526
Seat position memory......................... 181
Front side marker lights
Light switch .......................................... 258
Replacing light bulbs ........................637
Wattage ....................................................719 Front turn signal lights
Replacing light bulbs ....................... 637
Turn signal lever ................................. 252
Wattage ................................................... 719
Fuel
Capacity................................................... 712
Fuel gauge ............................................... 96
Information............................................ 720
Refueling .................................................274
Type............................................................ 712
Fuel filler door......................................... 274
Refueling .................................................274
When the fuel filler door
cannot be opened ..........................277
Fuses...........................................................632
Garage door opener.......................... 560
Gauges.........................................................96
Glove box ............................................... 534
Grocery bag hooks............................... 541F
G

785Alphabetical index
RX450h_RX450hL _U_OM48F85US-FLOW mode .......................................514
Seat belts..................................................... 32
Adjusting the seat belt ........................ 32
Automatic Locking
Retractor ................................................ 33
Child restraint system
installation ..............................................55
Cleaning and maintaining the
seat belt .............................................. 585
Emergency Locking
Retractor ................................................ 33
How to wear your seat belt ............. 32
How your child should
wear the seat belt .............................. 33
Pregnant women, proper seat
belt use.................................................... 34
Reminder light and buzzer ...........662
Seat belt extender................................. 33
Seat belt instructions
for Canadian owners ...................753
Seat belt pretensioners ...................... 33
SRS warning light.............................. 660 Seat position memory ........................... 181
Seat ventilators.......................................527
Seating capacity ....................................223
Seats
Adjustment.............................................. 167
Adjustment precautions................... 167
Child seats/child restraint
system installation ............................. 55
Cleaning.................................................584
Driving position memory.................. 181
Folding down the rear
seatbacks ............................................ 168
Front seat heaters.............................. 526
Head restraint....................................... 186
Power easy access system .............. 181
Properly sitting in the seat ................ 30
Rear seat heaters ............................... 527
Seat position memory ........................ 181
Seat ventilators.................................... 527S
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

787Alphabetical index
RX450h_RX450hL _U_OM48F85USwitches
Audio remote control
switches .............................................. 406
Automatic High Beam switch ..... 262
Brake hold switch ..............................256
Cruise control
switch................................................... 306
Door lock switch ................................. 138
Driving mode select switch ..........379
Driving position memory
switches .................................................. 181
Electronic sunshade switch ..........204
Emergency flashers switch ...........652
EV drive mode switch ..................... 244
Fog light switch ...................................266
Garage door opener
switches .............................................. 560
Heated steering wheel
switch....................................................526
HUD (Head-up display)
switches .................................................. 118
Ignition switch ......................................239
Light switch .......................................... 258
LKA (Lane-Keeping Assist)
switch..................................................... 301
Meter control switches .................... 103
Moon roof switches......................... 200
“ODO/TRIP” switch ......................... 104
Outside rear view mirror
switches ................................................ 193 Paddle shift switches............ 247, 248
Panoramic moon roof
switches .............................................. 204
Parking brake switch ....................... 253
Power back door opener
and closer switch .................. 143, 145
Power switch ....................................... 239
Power window switch .......................196
Rear window and
outside rear view mirror
defoggers switch..............................516
Rear window wiper and
washer switch ...................................272
Seat heater switches ............ 526, 527
Seat ventilator switches .................. 527
“SOS” button ......................................... 571
Talk switch................................... 471, 493
Telephone switch ................................ 471
Vehicle-to-vehicle
distance button................................306
VSC OFF switch ...............................384
Window lock switch ..........................196
Windshield wiper and
washer switch .................................. 267