2021 LEXUS RX450h fuel cap

3TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
Trailer towing (vehicles with towing package) ........................................ 173
Dinghy towing ................................ 183
4-2. Driving procedures Power (ignition) switch ............... 184
EV drive mode ............................... 189
Hybrid transmission ...................... 191
Turn signal lever............................. 194
Parking brake ................................. 195
Brake Hold....................................... 198
4-3. Operating the lights and wipers Headlight switch ........................... 200
AHB (Automatic High Beam) ........................................................... 203
Fog light switch ............................. 206
Windshield wipers and washer ........................................................... 206
Rear window wiper and washer ............................................................ 210
4-4. Refueling Opening the fuel tank cap.......... 211
4-5. Using the driving support systems Lexus Safety System + 2.0 ........ 214
PCS (Pre-Collision System).... 220
LTA (Lane Tracing Assist)........ 227
RSA (Road Sign Assist) ............. 236
Dynamic radar crui se control with
full-speed range......................... 238
BSM (Blind Spot Monitor) ....... 247
PKSA (Parking Support Alert) ........................................................... 253
Intuitive parking assist ................ 255
RCTA (Rear cross traffic alert) function ........................................... 261
PKSB (Parking Support Brake) ........................................................... 266Parking Support Brake function
(static objects) .............................. 271
Parking Support Brake function (rear-crossing vehicles) .......... 277
Driving mode select switch ...... 281
Driving assist systems ................ 283
4-6. Driving tips Hybrid vehicle driving tips ....... 289
Winter driving tips ......................... 291
Utility vehicle precautions........ 293
5-1. Remote Touch/Display Remote Touch............................... 298
Center Display.............................. 300
5-2. Lexus Climate Concierge Lexus Climate Concierge........ 303
5-3. Using the air conditioning system and defogger
Front automatic air conditioning system ............................................ 304
Rear automatic air conditioning system ............................................. 315
Heated steering wheel/seat heat- ers/seat ventilators.................... 318
5-4. Using the interior lights Interior lights list ............................. 321
5-5. Using the storage features List of storage features .
.............324
Luggage compartment features .......................................................... 329
5-6. Using the other interior features Other interior features .............. 334
Garage door opener ................. 346
Compass ......................................... 352
5Interior features

13Pictorial index
Precautions for winter season .......................................................................................P.291
To prevent freezing (windshield wiper de-icer)
*.................................................... P.311
Precautions for car wash ............................................................................................... P.357
Fuel filler door ........................................................................................................... P.211
Refueling method ............................................................................................................... .P.211
Fuel type/fuel tank capacity ...... ................................................................................... P.462
Tires.......................................................................................................................... .P.380
Tire size/inflation pressure ............................ ................................................... P.380, 466
Winter tires/tire chains ....................................................................................................P.2 91
Checking/rotation/tire pressure warning system............................................. P.380
Coping with flat tires........................................................................................................ P .432
Hood ..........................................................................................................................P.369
Opening ........................................................................................................................ ....... P.369
Engine oil ..................................................................................................................... ......... P.463
Coping with overheating ............................................................................................... P.454
Warning messages .......................................................................................................... P.428
Headlights/front turn signal lights/front side marker lights ........... P.194, 200
Side turn signal lights ............................................................................................. P.194
Parking lights/daytime running lights............................................................. P.200
Fog lights/cornering lights
*.....................................................................P.200, 206
Rear side marker lights ....................................................................................... P.200
Stop/tail lights ........................................................................................................ P.200
Back-up lights/rear turn signal lights ..................................................... P.194, 200
Shifting the shift lever to R ................................................................................................ P. 191
License plate lights ............................................................................................... P.200
*:If equipped
Light bulbs of the exterior lights for driving
(Replacing method: P.399, Watts: P.468)
E
F
G
H
I
J
K
L
M
N
O

163
4
4
Driving
Driving
.4-1. Before drivingDriving the vehicle ..................... 164
Cargo and luggage ................... 169
Vehicle load limits ...................... 172
Trailer towing (vehicles without towing package) ...................... 173
Trailer towing (vehicles with tow- ing package).............................. 173
Dinghy towing ............................. 183
4-2. Driving procedures Power (ignition) switch ............ 184
EV drive mode ............................ 189
Hybrid transmission ................... 191
Turn signal lever.......................... 194
Parking brake .............................. 195
Brake Hold.................................... 198
4-3. Operating the lights and wipers Headlight switch ........................ 200
AHB (Automatic High Beam) ........................................................ 203
Fog light switch .......................... 206
Windshield wipers and washer ........................................................ 206
Rear window wiper and washer ......................................................... 210
4-4. Refueling Opening the fuel tank cap....... 211
4-5. Using the driving support sys- tems
Lexus Safety System + 2.0 ..... 214PCS (Pre-Collision System)
....................................................... 220
LTA (Lane Tracing Assist) ..... 227
RSA (Road Sign Assist).......... 236
Dynamic radar cruise control with full-speed range...................... 238
BSM (Blind Spot Monitor) .... 247
PKSA (Parking Support Alert) ....................................................... 253
Intuitive parking assist ............. 255
RCTA (Rear cross traffic alert) function........................................ 261
PKSB (Parking Support Brake) ....................................................... 266
Parking Support Brake function (static objects) ........................... 271
Parking Support Brake function (rear-crossing vehicles) ...... 277
Driving mode select switch ... 281
Driving assist systems.............. 283
4-6. Driving tips Hybrid vehicle driving tips .... 289
Winter driving tips ..................... 291
Utility vehicle precautions..... 293

1654-1. Before driving
4
Driving
hybrid system output may be restrained.
●A warning message is displayed on the
multi-information display and head-up
display (if equipped) while the system is
operating.
■Restraining sudden start (Drive-Start
Control)
●When the following unusual operation is
performed, the hybrid system output may
be restrained.
• When the shift lever is shifted from R to D,
D to R, N to R, P to D, or P to R (D
includes S) with the accelerator pedal
depressed, a warning message appears
on the multi-information display and
head-up display (if equipped). If a warn-
ing message is shown on the multi-infor-
mation display and head-up display (if
equipped), read the message and follow
the instructions.
• When the accelerator pedal is depressed
too much while the vehicle is in reverse.
●While Drive-Start Control is being acti-
vated, your vehicle may have trouble
escaping from the mud or fresh snow. In
such case, deactivate TRAC ( P.285)
to cancel Drive-Start Control so that the
vehicle may become able to escape from
the mud or fresh snow.
■Breaking in your new Lexus
To extend the life of the vehicle, observing
the following precautions is recommended:
●For the first 200 miles (300 km):
Avoid sudden stops.
●For the first 500 miles (800 km):
Do not tow a trailer.
●For the first 1000 miles (1600 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low gears.
• Do not drive at a constant speed for extended periods.
■Operating your vehicle in a foreign
country
Comply with the relevant vehicle registra-
tion laws and confirm the availability of the
correct fuel. ( P.462)
■Eco-friendly driving
 P.85
WARNING
Observe the following precautions.
Failure to do so may result in death or
serious injury.
■When starting the vehicle
Always keep your foot on the brake
pedal while stopped with the “READY”
indicator is illuminated. This prevents the
vehicle from creeping.
■When driving the vehicle
●Do not drive if you are unfamiliar with
the location of the brake and accelera-
tor pedals to avoid depressing the
wrong pedal.
• Accidentally depressing the accelera- tor pedal instead of the brake pedal
will result in sudden acceleration that
may lead to an accident.
• When backing up, you may twist your body around, leading to a difficulty in
operating the pedals. Make sure to
operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the vehicle
only slightly. This allows you to depress
the brake and accelerator pedals
properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal
using your left foot may delay
response in an emer gency, resulting in
an accident.
●The driver should pay extra attention
to pedestrians when the vehicle is
powered only by the electric motor
(traction motor). As there is no engine
noise, the pedestrians may misjudge
the vehicle’s movement. Even though
the vehicle is equipped with the
Acoustic Vehicle Alerting System,
drive with care as pedestrians in the
vicinity may still not notice the vehicle if
the surrounding area is noisy.

2114-4. Refueling
4
Driving
4-4.Refueling
Close all the doors and windows,
and turn the power switch off.
 Confirm the type of fuel.
■Fuel types
 P.469
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehi-
cle has a fuel tank opening that only accom-
modates the special nozzle on unleaded
fuel pumps.
Opening the fuel tank cap
The fuel tank of your vehicle has a
special structure, which requires a
reduction in fuel tank pressure
before refueling. After the opener
switch has been pressed, it will take
several seconds until the vehicle is
ready for refueling.
Before refueling the vehicle
WARNING
■When refueling the vehicle
Observe the following precautions while
refueling the vehicle. Failure to do so may
result in death or serious injury.
●After exiting the vehicle and before
opening the fuel door, touch an
unpainted metal surface to discharge
any static electricity. It is important to
discharge static electricity before refu-
eling because sparks resulting from
static electricity can cause fuel vapors
to ignite while refueling.
●Always hold the grips on the fuel tank
cap and turn it slowly to remove it.
A whooshing sound may be heard
when the fuel tank cap is loosened.
Wait until the sound cannot be heard
before fully removing the cap. In hot
weather, pressurized fuel may spray
out of the filler neck and cause injury.
●Do not allow anyone that has not dis-
charged static electricity from their
body to come close to an open fuel
tank.
●Do not inhale vaporized fuel.
Fuel contains substances that are
harmful if inhaled.
●Do not smoke while refueling the vehi-
cle.
Doing so may cause the fuel to ignite
and cause a fire.
●Do not return to the vehicle or touch
any person or object that is statically
charged.
This may cause static electricity to
build up, resulting in a possible ignition
hazard.
■When refueling
Observe the following precautions to
prevent fuel overflowing from the fuel
tank:
●Securely insert the fuel nozzle into the
fuel filler neck.
●Stop filling the tank after the fuel noz-
zle automatically clicks off.
●Do not top off the fuel tank.
NOTICE
■Refueling
●Finish refueling within 30 minutes. If
more than 30 minutes passes, the
internal valve closes. In this condition,
fuel may overflow during the refueling
process.
Press the fuel filler door opener switch
again.

2124-4. Refueling
1Press the switch to open the fuel
filler door.
The fuel filler door will open within about
10 seconds of the sw itch being pressed.
Before refueling is possible, a message will
be shown on the multi-information display
in the instrument clus ter to indicate the
progress of the fuel filler door opener.
2 Open the fuel filler door until it is
securely locked.
3 Turn the fuel tank cap slowly and
remove it, then put it into the holder
on the fuel filler door.
■If the fuel filler door cannot be opened
 P.446
1 After refueling, turn the fuel tank
cap until you hear a click. Once the
cap is released, it will turn slightly in
the opposite direction.
2 Close the fuel filler door.
NOTICE
●Do not spill fuel during refueling.
Doing so may damage the vehicle,
such as causing the emission control
system to operate abnormally or dam-
aging fuel system components or the
vehicle’s painted surface.
Opening the fuel tank cap
NOTICE
■When refueling
When refueling your vehicle, make sure
that the fuel filler door lock is not pushed
by the fuel nozzle boot, etc., as this may
cause a valve to close, possibly resulting
in a fuel spill.
If the fuel filler door lock has been
pushed, operate the fuel filler door
opener switch in the vehicle before con-
tinuing to refuel.
Closing the fuel tank cap

2134-4. Refueling
4
Driving
WARNING
■When replacing the fuel tank cap
Do not use anything but a genuine Lexus
fuel tank cap designed for your vehicle.
Doing so may cause a fire or other inci-
dent which may result in death or serious
injury.

3075-3. Using the air conditioning system and defogger
5
Interior features
push-button start is used to unlock a pas-
senger door.
●The doors that can recall the air condi-
tioning setting when unlocked using the
smart access system with push-button
start can be changed.
* For details, con-
tact your Lexus dealer.
*: The doors that can recall the driving
position memory are changed at the
same time.
■Operation of the air conditioning sys-
tem in Eco drive mode
In Eco drive mode, the air conditioning sys-
tem is controlled as follows to prioritize fuel
efficiency:
●Engine speed and compressor operation
controlled to restri ct heating/cooling
capacity
●Fan speed restricted when automatic
mode is selected
To improve air condit ioning performance,
perform the following operations:
●Adjust the fan speed
●Turn off Eco drive mode ( P.281)
■When the outside temperature falls to
nearly 32°F (0°C)
The dehumidification function may not
operate even when “A/C” is selected.
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning
system to the outside air mode.
●During use, various odors from inside and
outside the vehicle may enter into and
accumulate in the air conditioning sys-
tem. This may then cause odor to be
emitted from the vents.
●To reduce potential odors from occur-
ring:
• It is recommended that the air condition- ing system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time imme-
diately after the air conditioning system is
started in automatic mode or with the
micro dust and pollen filter on.
■Using the voice command system
Air conditioning system can be operated
using voice commands. For details, refer to
“NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.
■Air conditioning filter
 P.390
■Air conditioning system refrigerant
●A label regarding the refrigerant of the
air conditioning system is attached to the
hood at the location shown in the follow-
ing illustration.
●The meaning of each symbol on the label
are as follows:
■Customization
Some functions can be customized.
(  P.480)
Caution
Air conditioning system
Air conditioning system
lubricant type
Requires registered tech-
nician to service air condi-
tioning system
Flammable refrigerant