RCTA LEXUS RX450H 2019 Owners Manual

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RX450h_RX450hL_U
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4-1. 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 ..... 394
4Driving

932. Instrument cluster
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Instrument cluster
RX450h_RX450hL_ULKA indicator (
P. 297)
(U.S.A.)
Parking brake indicator
( P. 253, 254)
*4
LKA indicator ( P. 297)
(Canada)
Parking brake indicator
( P. 253)
(if equipped)
Intuitive parking assist
indicator ( P. 332)*1Brake hold standby
indicator ( P. 256)
*1, 5
(if equipped)
ICS OFF indicator
( P. 345)*1Brake hold operated
indicator ( P. 256)
(if equipped)
“BSM” indicator ( P. 319) EV indicator ( P. 76)
(if equipped)
“RCTA” indicator
( P. 319)*6
Security indicator
( P. 83, 86)
*2, 3
(if equipped)
BSM outside rear view
mirror indicators
( P. 319) “READY” indicator
(
 P. 239)
*1, 4
Slip indicator ( P. 384)*7
Low outside temperature
indicator ( P. 96)
*1, 5VSC OFF indicator
( P. 385)*1, 6
(U.S.A.)
“AIR BAG ON/OFF”
indicator ( P. 47)
*1, 5PCS warning light
( P. 290)*1, 6
(Canada)
“AIR BAG ON/OFF”
indicator ( P. 47)

1092. Instrument cluster
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Instrument cluster
RX450h_RX450hL_U
■ PCS (Pre-Collision System) (P. 286)
The following pre-collision syst em settings can be changed:
■ BSM (Blind Spot Monitor) (if equipped) ( P. 319)
The following Blind Spot Monitor settings can be changed:
*: The Rear Cross Traffic Alert function can be enabled/disabled only when the Blind Spot Monitor function is enabled.
■ Intuitive parking assist (if equipped) ( P. 332)
ItemSettingsDetails
PCS On
Select to enable/disable the pre-colli-
sion system.
Off
Warning sensitivitySelect to change the warning timing.
ItemSettingsDetails
BSM On
Select to enable/disable the Blind
Spot Monitor function.
Off
RCTA*OnSelect to enable/disable the Rear
Cross Traffic Alert function.
Off
ItemSettingsDetails
Intuitive parking assist On
Select to enable/disable the intuitive
parking assist.
Off

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4Driving
RX450h_RX450hL_U
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 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

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
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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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3274-5. Using the driving support systems
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Driving
RX450h_RX450hL_U
The RCTA function uses radar sensors to detect vehicles approaching from the
right or left at the rear of the vehicle and alerts the driver of the presence of such
vehicles by flashing the outside rear view mirror indicators and sounding a
buzzer.
Approaching vehicles
Detection areas of approaching vehicles
■Rear Cross Traffic Auto Brake function
When the Intelligent Clearance Sonar wi th Rear Cross Traffic Auto Brake is
enabled and a vehicle approaching from the right or left at the rear of the vehi-
cle is detected, the Rear Cross Traffic Auto Brake function will perform brake
control to reduce the likelihood of an impact with the approaching vehicle.
Intelligent Clearance Sonar with Re ar Cross Traffic Auto Brake: P. 342
RCTA function
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3284-5. Using the driving support systems
RX450h_RX450hL_U
■RCTA icon display
When a vehicle approaching from the right or left at the rear of the vehicle is
detected, the following will be displayed on the audio system screen.
DisplayContent
A vehicle is approaching from the left at the rear of the vehicle
A vehicle is approaching from the right at the rear of the vehicle
Vehicles are approaching from both sides of the vehicle
The RCTA function is malfunctioning
( P. 321)
WARNING
■Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, taking care to
observe your surroundings.
The RCTA function is only a supplementary function which alerts the driver that a vehi-
cle is approaching from the right or left at the rear of the vehicle. As the RCTA function
may not function correctly under certain cond itions, the driver’s own visual confirma-
tion of safety is necessary. Over reliance on this function may lead to an accident
resulting death or serious injury.

3294-5. Using the driving support systems
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Driving
RX450h_RX450hL_U
The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver of faster vehicles approaching from farther away.
Example:
■The RCTA function is operational when
The RCTA function operates when all of the following conditions are met:
●The RCTA function is on.
●The shift lever is in R.
●The vehicle speed is less than approximately 5 mph (8 km/h).
●The approaching vehicle speed is between approximately 5 mph (8 km/h) and 18 mph
(28 km/h).
RCTA function detection areas
Approaching vehicleSpeedApproximate
alert distance
Fast18 mph (28 km/h)65 ft. (20 m)
Slow5 mph (8 km/h)18 ft. (5.5 m)
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