2019 LEXUS RX450H rear

2774-4. Refueling
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Driving
RX450h_RX450hL_U
■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 air 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.

2834-5. Using the driving support systems
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Driving
RX450h_RX450hL_U
WARNING
●Do not subject the camera sensor to a strong impact.
●Do not change the installation position or direction of the camera sensor or remove it.
●Do not disassemble the camera sensor.
●Do not modify any components of the vehi cle around the camera sensor (inside rear
view mirror, et c.) or ceiling.
●Do not attach any accessories that may obstruct the camera sensor to the hood, front
grille or front bumper. Contact your Lexus dealer for details.
●If a surfboard or other long object is to be mounted on the roof, make sure that it will
not obstruct the camera sensor.
●Do not modify the head lights or other lights.

2944-5. Using the driving support systems
RX450h_RX450hL_U
■Situations in which the system may not operate properly
●In some situations such as the following, a vehicle may not be detected by the radar
sensor and camera sensor, preventing the system from operating properly:
• If an oncoming vehicle is approaching your vehicle
• If a vehicle ahead is a motorcycle or bicycle
• When approaching the side or front of a vehicle
• If a preceding vehicle has a small rear end, such as an unloaded truck
• If a vehicle ahead is carrying a load which protrudes past its rear bumper
• If a vehicle ahead is irregularly shap ed, such as a tractor or side car
• If the sun or other light is shin ing directly on a vehicle ahead
• If a vehicle cuts in front of your ve hicle or emerges from beside a vehicle
• If a vehicle ahead makes an abrupt maneuver (such as sudden swerving, accelera-
tion or deceleration)
• When suddenly cutting behind a preceding vehicle
• When driving in inclement we ather such as heavy rain, fog, snow or a sandstorm
• When the vehicle is hit by water, sn ow, dust, etc. from a vehicle ahead
• When driving through steam or smoke
• When driving in a place where the surrounding brightness changes suddenly, such as at the entrance or exit of a tunnel
• When a very bright light, such as the sun or the headlights of on coming traffic, shines
directly into the camera sensor
• When the surrounding area is dim, such as at dawn or dusk, or while at night or in a tunnel
• If a preceding vehicle has a low rear end,
such as a low bed trailer
• If a vehicle ahead has extremely high ground clearance
• When a vehicle ahead is not directly in front of your vehicle

2954-5. Using the driving support systems
4
Driving
RX450h_RX450hL_U• After the hybrid system has started the
vehicle has not been driven for a certain
amount of time
• While making a left/right turn and for a few seconds after making a left/right turn
• While driving on a curve and for a few seconds after driving on a curve
• If your vehicle is skidding
• If the wheels are misaligned
• If a wiper blade is blocking the camera sensor
• The vehicle is wobbling.
• The vehicle is being driven at extremely high speeds.
• When driving on a hill
• If the radar sensor or ca mera sensor is misaligned
●In some situations such as the following, sufficient braking forc e may not be obtained,
preventing the system from performing properly:
• If the braking functions cannot operate to their full extent, such as when the brake parts are extremely cold, extremely hot, or wet
• If the vehicle is not properly maintained (brakes or tires are excessively worn,
improper tire inflation pressure, etc.)
• When the vehicle is being driven on a gravel road or other slippery surface
●Some pedestrians such as the following may not be detected by the radar sensor and
camera sensor, preventing the system from operating properly:
• Pedestrians shorter than approximately 3.2 ft. (1 m) or taller than approximately 6.5
ft. (2 m)
• Pedestrians wearing oversized clothing (a ra in coat, long skirt, etc.), making their sil-
houette obscure
• Pedestrians who are carrying large baggage, holding an umbrella, etc., hiding part
of their body
• Pedestrians who are bending forward or squatting
• Pedestrians who are pushing a stroller , wheelchair, bicycle or other vehicle
• Groups of pedestrians which are close together
• Pedestrians who are wearing white and look extremely bright
• Pedestrians in the dark, such as at night or while in a tunnel
• Pedestrians whose clothing appears to be nearly the same color or brightness as
their surroundings
• Pedestrians near walls, fences , guardrails, or large objects
• Pedestrians who are on a metal object (manhole cover, steel plate, etc.) on the road
• Pedestrians who are walking fast
• Pedestrians who are changing speed abruptly
• Pedestrians running out from be hind a vehicle or a large object
• Pedestrians who are extremely close to the side of the vehicle (outside rear view mirror, etc.)
• If the front of the vehicle is raised or low-
ered

3174-5. Using the driving support systems
4
Driving
RX450h_RX450hL_U
■Automatic cancelation of constant speed control mode
Constant speed control mode is automatica lly canceled in the following situations:
●Actual vehicle speed is more than approxim ately 10 mph (16 km/h) below the set vehi-
cle speed.
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off.
●Pre-collision braking is activated.
If constant speed control mode is automati cally canceled for any other reason, there may
be a malfunction in the system . Contact your Lexus dealer.
■Warning messages and buzzers for dynamic radar cruise control with full-speed range
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for ca ution while driving. If a warning message is shown on the
multi-information display, read the message and follow the instructions.
■When the sensor may not be correctly detecting the vehicle ahead
In the case of the following and depending on the conditions, operate the brake pedal
when deceleration of the system is insuff icient or operate the accelerator pedal when
acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles, the approach
warning ( P. 314) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same lane
●Vehicles with small rear ends (traile rs with no load on board, etc.)

3194-5. Using the driving support systems
4
Driving
RX450h_RX450hL_U
The Blind Spot Monitor is a system that has 2 functions:
●The BSM (Blind Spot Monitor) function
Assists the driver in making a decision when changing lanes
●The RCTA (Rear Cross Traffic Alert) function
Assists the driver when backing up
These functions use same sensors.
BSM (Blind Spot Monitor)
: If equipped
Summary of the Blind Spot Monitor

3204-5. Using the driving support systems
RX450h_RX450hL_U
Multi-information display
Turning the BSM function/RCTA function on/off. ( P. 321)
The RCTA function is available when the BSM function is on.
Outside rear view mirror indicators
BSM function:
When a vehicle is detected in a blind spot of the outside rear view mirrors or
approaching rapidly from behind into a blin d spot, the outside rear view mirror indi-
cator on the detected side will illuminate. If the turn signal lever is operated toward
the detected side, the outside rear view mirror indicator flashes.
RCTA function:
When a vehicle approaching from the right or left at the rear of the vehicle is
detected, both outsid e rear view mirror indicators will flash.
“BSM” indicator/“RCTA” indicator
When the BSM function/RCTA function is turned on, the indicator illuminates.
Monitor screen display (RCTA function only)
If a vehicle approaching from the right or left at the rear of the vehicle is detected, the
RCTA icon ( P. 328) for the detected side will be displayed on the monitor screen.
This illustration shows an example of a vehi cle approaching from the left at the rear of
the vehicle.
RCTA buzzer (RCTA function only)
If a vehicle approaching from the right or left at the rear of the vehicle is detected, a
buzzer will sound. The buzzer also sounds for approximately 1 second immediately
after the BSM function is operated to turn the system on.
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3214-5. Using the driving support systems
4
Driving
RX450h_RX450hL_U
Press “” or “ ” of the meter control switches, select .
Press “ ” or “ ” of the meter control switches, select “BSM”.
Press “ ” or “ ” of the meter control switch es, select “BSM” or “RCTA”.
■Outside rear view mirror indicator visibility
In strong sunlight, the outside rear view mirror indicator may be difficult to see.
■Hearing the RCTA buzzer
The RCTA buzzer may be difficult to hear over loud noises, such as if the audio system
volume is high.
■When there is a malfunction in the Blind Spot Monitor
If a system malfunction is detected due to any of the following, a warning message will be
displayed: ( P. 667)
●A sensor is malfunctioning
●A sensor is dirty or covere d with snow or a sticker
●The outside temperature is extremely high or low
●Sensor voltage is abnormal
●A sensor is misaligned
■Certification for the Blind Spot Monitor
For vehicles sold in the U.S.A.
For vehicles sold in Canada
Turning the BSM function/RCTA function on/off
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