2018 LEXUS RX450h fuel cap

3 1
987432
10
RX450h_RX450hL _U_OM48F85U 654-1. Before driving
Driving the vehicle ......................212
Cargo and luggage .................. 220
Vehicle load limits ..................... 223
Trailer towing (vehicles
with towing package)............ 224
Trailer towing (vehicles
without towing
package)..................................... 237
Dinghy towing ............................. 238
4-2. Driving procedures
Power (ignition) switch............ 239
EV drive mode ............................ 244
Hybrid transmission.................. 246
Turn signal lever ......................... 252
Parking brake .............................. 253
Brake Hold ................................... 256
4-3. Operating the lights and
wipers
Headlight switch ........................ 258
Automatic High Beam............. 262
Fog light switch ........................... 266
Windshield wipers and
washer ......................................... 267
Rear window wiper and
washer ..........................................272 4-4. Refueling
Opening the fuel tank cap ......274
4-5. Using the driving support
systems
Lexus Safety System+ .............. 279
PCS
(Pre-Collision System) ......... 286
LKA
(Lane-Keeping Assist).......... 297
Dynamic radar cruise
control with full-speed
range ............................................ 306
BSM (Blind Spot Monitor).......319
• BSM function......................... 323
• RCTA function...................... 327
Intuitive parking assist.............. 332
Intelligent Clearance Sonar
(ICS)............................................. 342
Lexus parking assist
monitor........................................ 363
Driving mode select
switch ........................................... 379
Driving assist systems .............. 382
4-6. Driving tips
Hybrid vehicle driving tips .....388
Winter driving tips..................... 390
Utility vehicle precautions ..... 3944
Driving

17Pictorial index
RX450h_RX450hL _U_OM48F85UWindshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 267 Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 390
To prevent freezing (windshield wiper de-icer)
* . . . . . . . . . . . . . . . . . . . . . . . . P. 516
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 582
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 274Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 276
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 712
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 611Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 717
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 39 0
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . . . P. 611
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 673
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 595Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 595
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 713
Coping with overheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 702
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 2 52
Parking lights/daytime running lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Front side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Fog lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 266
Cornering lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 259
Stop/tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Back-up lights Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 246
Rear side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258 4
5
6
7
Light bulbs of the exte rior lights for driving
(Replacing method: P. 637, Watts: P. 719)
* : If equipped8
9
10
11
12
13
14
15
16
17

211
4 Driving
RX450h_RX450hL _U_OM48F85U4-3. Operating the lights and
wipers
Headlight switch ........................ 258
Automatic High Beam ............. 262
Fog light switch ...........................266
Windshield wipers and
washer.......................................... 267
Rear window wiper and
washer.......................................... 272
4-4. Refueling
Opening the fuel tank cap...... 274 4-5. Using the driving support
systems
Lexus Safety System+ .............. 279
PCS
(Pre-Collision System) ......... 286
LKA
(Lane-Keeping A ssist) .......... 297
Dynamic radar cruise
control with full-speed
range ............................................306
BSM (Blind Spot Monitor) ...... 319
• BSM function ......................... 323
• RCTA function...................... 327
Intuitive parking assist .............. 332
Intelligent Clearance Sonar
(ICS) ............................................. 342
Lexus parking assist
monitor ........................................ 363
Driving mode select
switch ........................................... 379
Driving assist systems ..............382
4-6. Driving tips
Hybrid vehicle driving
tips ................................................ 388
Winter driving tips .....................390
Utility vehicle
precautions................................ 394

2134-1. Before driving
4
Driving
RX450h_RX450hL _U_OM48F85UWith the brake pedal depressed, shift the shift lever to D. ( → P. 246)
Pull the parking brake switch and parking brake is set manually. ( → P. 254)
Release the brake pedal and gently de press the accelerator pedal to acceler-
ate the vehicle.
Press the parking brake switch and pa rking brake is released manually.
( → P. 254) ■
When starting off on a uphill
The hill-start assist control will activate. ( → P. 382)■
For fuel-efficient driving
Keep in mind that hybrid vehicles are simila r to conventional vehicles, and it is necessary
to refrain from activities su ch as sudden acceleration. ( → P. 388)■
Driving in the rain ●
Drive carefully when it is ra ining, because visibility will be reduced, the windows may
become fogged-up, and the road will be slippery. ●
Drive carefully when it starts to rain, beca use the road surface will be especially slip-
pery. ●
Refrain from high speeds when driving on an expressway in the rain, because there may
be a layer of water between the tires and th e road surface, preventing the steering and
brakes from operating properly. ■
Restraining the hybrid system output (Brake Override System)●
When the accelerator and brake pedals are depressed at the same time, the hybrid sys-
tem output may be restrained. ●
A warning message is displayed on the mult i-information display while the system is
operating. If a warning messa ge is shown on the multi-in formation display, read the
message and follow the instructions. ■
Restraining sudden start (Drive-Start Control)●
When the following unusual operation is pe rformed, 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 acce lerator pedal depressed, a warning message appears on
the multi-information display. If a warning message is shown on the multi-informa-
tion display, read the message and follo w the instructions.
• When the accelerator pedal is depressed t oo much while the vehicle is in reverse.●
While Drive-Start Control is being activated, your vehicle may have trouble escaping
from the mud or fresh snow. In such case, deactivate TRAC ( → P. 384) to cancel Drive-
Start Control so that the vehicle may beco me able to escape from the mud or fresh
snow.Starting off on a uphill 1
2
3
4

274
RX450h_RX450hL _U_OM48F85U4-4. Refueling
●
Close all the doors and windows, and turn the power switch off.●
Confirm the type of fuel. ■
Fuel types
→ P. 720 ■
Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehi cle has a fuel tank opening that only accom-
modates the specia l nozzle on unleaded fuel pumps.
Opening the fuel tank cap The fuel tank of your vehicle has a special structure, which requires a reduc-
tion in fuel tank pressure before refu eling. After the opener switch has been
pressed, it will take several seconds un til the vehicle is ready for refueling.
Before refueling the vehicle

2754-4. Refueling
4
Driving
RX450h_RX450hL _U_OM48F85UWARNING ■
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 discha rge static electricity
before refueling because sparks resulting fr om 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 fu el 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 discharged static electricity from their body to come
close to an open fuel tank. ●
Do not inhale vaporized fuel.
Fuel contains substances th at are harmful if inhaled.●
Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire. ●
Do not return to the vehicle or touch any pe rson 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 nozz le into the fuel filler neck.●
Stop filling the tank after the fuel nozzle automatically clicks off.●
Do not top off the fuel tank.
NOTICE ■
Refueling ●
Finish refueling within 30 minutes. If more than 30 minutes passe s, the internal valve
closes. In this condition, fuel may overflow during the refueling process. Press the fuel
filler door opener switch again. ●
Do not spill fuel during refueling.
Doing so may damage the vehicle, such as causing the emission control system to
operate abnormally or damaging fuel syst em components or the vehicle’s painted
surface.

276 4-4. Refueling
RX450h_RX450hL _U_OM48F85UPress the switch to open the fuel
filler door. The fuel filler door wi ll 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 cluster to indi-
cate the progress of the fuel filler door
opener.
Open the fuel filler door until it is securely locked.
Turn the fuel tank cap slowly and
remove it, then put it into the holder
on the fuel filler door.Opening the fuel tank cap 1
2
3

2774-4. Refueling
4
Driving
RX450h_RX450hL _U_OM48F85U■
When the fuel filler door cannot be opened by pressing the inside switch
RX450h 
RX450hL ●
If the fuel filler door cannot be opened by
pressing the rear edge of the fuel filler door
with the doors unlocked, remove the cover
inside the luggage compartment and pull the
lever to open the fuel filler door. ●
Using the lever to open the fuel filler door may
not allow for an adequate reduction in fuel
tank pressure before refueling. To prevent fuel
from spilling out, turn the cap slowly when
removing it.
During refueling, fuel may spill out from the
filler opening due to ai r being discharged from
inside the fuel tank. Therefore, fill the fuel tank
carefully and slowly.
If the fuel filler door cannot be opened by press-
ing its rear edge with the doors unlocked,
remove the cover inside the luggage compart-
ment using a tool, such as a flathead screw-
driver, and pull the lever to open the fuel filler
door.
When using a screwdriver, make sure to wrap its
tip with tape to protect the cover.
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 continuing to refuel.