2016 LEXUS RX450H set

2474-2. Driving procedures
4
Driving
RX450h_U_OM0E013U
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake indicator light and parking brake lamp
●Depending on the power switch mode, the parking brake indicator light and parking
brake lamp will turn on and stay on as described below:
ON mode: Comes on until the parking brake is released.
Not in ON mode: Stays on fo r approximately 15 seconds.
●When the power switch is turned off with th e parking brake set, the parking brake indi-
cator light and parking brake la mp will stay on for about 15 seconds. This does not indi-
cate a malfunction.
■Changing the mode
When changing the automatic mode on/off , the message will be shown on the multi-
information display and the buzzer sounds.
■Parking brake engaged warning buzzer
A buzzer will sound if the vehicle is driv en with the parking brake engaged. “Release
Parking Brake” is displayed on the multi-information display.
■Warning messages and buzzers
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution. If a warn ing message is shown on the multi-information
display, read the message and follow the instructions.
■If the brake system warning light comes on
P. 536
■Usage in winter time
P. 391

2484-2. Driving procedures
RX450h_U_OM0E013U
WARNING
■When parking the vehicle
Do not leave a child in the vehicle alone. The parking brake may be released uninten-
tionally and there is the danger of the ve hicle moving that may lead to an accident
resulting in death or serious injury.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift the shif t lever to P, set the parking brake and make
sure that the vehicle does not move.
■When the system malfunctions
Stop the vehicle in a safe place and check the warning messages.
■When the parking brake cannot be released due to a malfunction
Driving the vehicle with the parking brake set will lead to brake components overheat-
ing, which may affect bra king performance and increase brake wear. Contact your
Lexus dealer immediately if this occurs.

2494-2. Driving procedures
4
Driving
RX450h_U_OM0E013U
Turns the brake hold system on
The brake hold standby indicator
(green) comes on. While the system is
holding the brake, the brake hold oper-
ated indicator (yellow) comes on.
■Brake hold system operating conditions
The brake hold system cannot be turn ed on in the following conditions:
●The driver’s door is not closed.
●The driver is not wearing the seat belt.
If any of the conditions above are detected when the brake hold system is enabled, the
system will turn off and the brake hold standby in dicator light will go off. In addition, if any
of the conditions are detected while the sy stem is holding the brake, a warning buzzer
will sound and a message will be shown on th e multi-information display. The parking
brake will then be set automatically.
■Brake hold function
●If the brake pedal is left released for a pe riod of about 3 minutes after the system has
started holding the brake, the parking brake will be set automatically. In this case, a
warning buzzer sounds and a message is shown on the multi-information display.
●To turn the system off while the system is holding the brake, firmly depress the brake
pedal and press the button again.
●The brake hold function may not hold the vehicle when the vehicle is on a steep incline.
In this situation, it may be necessary for the driver to apply the brakes. A warning
buzzer will sound and the mult i-information display will inform the driver of this situa-
tion. If a warning message is shown on the multi-information display, read the message
and follow the instructions.
Brake Hold
The brake hold system keeps the brake appl ied when the shift lever is in D, S or
N with the system on and the brake peda l has been depressed to stop the vehi-
cle. The system releases the brake wh en the accelerator pedal is depressed
with the shift lever in D or S to allow smooth start off.

2504-2. Driving procedures
RX450h_U_OM0E013U
■When the parking brake is set automatically while the system is holding the brakes
The parking brake will not be released auto matically. With the brake pedal depressed,
release the parking brake by operating the pa rking brake switch, making sure that the
parking brake indicator light goes off. ( P. 245)
■If “Brake Hold Fault Depress Brake to Deacti vate Visit Your Dealer” is displayed on the
multi-information display
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately.
■Warning messages and buzzers
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution. If a warn ing message is shown on the multi-information
display, read the message and follow the instructions.
■If the brake hold operated indicator flashes
 P. 536
WARNING
■When the vehicle is on a steep incline
When using the brake hold system on a steep incline exercise caution. The brake hold
function may not hold the vehicle in such a situation.
■When stopped on a slippery road
The system cannot stop the vehicle when the gripping ability of the tires has been
exceeded. Do not use the system when stopped on a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not designed for use when parking the vehicle for a long
period of time. Turning the power switch off while the system is holding the brake may
release the brake, which would cause the vehicle to move. When operating the power
switch, depress the brake pedal, shift the shift lever to P and set the parking brake.

2614-3. Operating the lights and wipers
4
Driving
RX450h_U_OM0E013U
Washer/wiper dual operation
The wipers will automatically operate a
couple of times after the washer squirts.
Vehicles with headlight cleaners:
When the power switch is in ON mode
and the headlights are on, if the lever is
pulled, the headlight cleaners will oper-
ate once. After this, the headlight clean-
ers will operate every 5th time the lever
is pulled.
■The windshield wipers and washer can be operated when
The power switch is in ON mode.
■Dripping prevention wiper sweep
After washing and wiping operation several times, the wipers operate one more time
after a short delay to prevent dripping. However, this function will not operate while driv-
ing.
■Effects of vehicle speed on wiper operation
Vehicle speed affects the Intermittent wiper interval.
■Raindrop sensor
●If the wiper switch is turned to the “AUTO” position while the power switch is in ON
mode, the wipers will operate once to show that AUTO mode is activated.
●When the sensor sensitivity ring is turned toward high while in “AUTO” position, the
wipers will operate once to indicate that the sensor sensitivity is enhanced.
●If the temperature of the raindrop sensor is 194 F (90 C) or higher, or 5 F (-15 C) or
lower, automatic operation may not occur. In this case, operate the wipers in any mode
other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles ar e not blocked if there is washer fluid in the washer fluid
tank.
8
●The raindrop sensor judges the amount of
raindrops.
An optical sensor is ad opted. It may not oper-
ate properly when sunlight from the rising or
setting of the sun inte rmittently strikes the
windshield, or if bugs, etc. are present on the
windshield.

2834-5. Using the driving support systems
4
Driving
RX450h_U_OM0E013U
■Enabling/disabling the pre-collision system
The pre-collision system can be enabled/disabled on (P. 109) of the
multi-information display.
The system is automatically enabled each time the power switch is turned to ON
mode.
If the system is disabled, the PCS
warning light will turn on and a mes-
sage will be displayed on the multi-
information display.
■Changing the pre-collision warning timing
The pre-collision warning timing can be changed on ( P. 109) of the
multi-information display.
The operation timing settin g is retained when the power switch is turned off.
Far
The warning will begin to operate
earlier than with the default timing.
Middle
This is the default setting.
Near
The warning will begin to operate
later than with the default timing.
Changing settings of the pre-collision system
1
2
3

2984-5. Using the driving support systems
RX450h_U_OM0E013U
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the following conditions are met.
• LKA is turned on.
• Vehicle speed is approximatel y 32 mph (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approx imately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or around a gentle curve with a radius of more
than approximately 492 ft. (150 m).
• No system malfunctions are detected. ( P. 536)
●Steering assist function
This function operates when all of the follo wing conditions are met in addition to the
operation conditions for the lane departure alert function.
• Setting for “Steering Assist” in of the multi-information display is set to “On”.
(  P. 109)
• Vehicle is not accelerated or dece lerated by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for changing
lanes.
• ABS, VSC, TRAC and PCS are not operating.
• TRAC or VSC is not turned off.
●Vehicle sway warning
This function operates when all of the following conditions are met.
• Setting for “Sway Warning” in of the multi-information display is set to “On”.
(  P. 109)
• Vehicle speed is approximatel y 32 mph (50 km/h) or more.
• Width of traffic lane is approx imately 9.8 ft. (3 m) or more.
• No system malfunctions are detected. ( P. 536)
●Lane centering function
This function operates when all of the following conditions are met.
• LKA is turned on.
• Setting for “Lane Center” in of the mu lti-information display are set to “On”.
(  P. 109)
• System recognizes white (yellow) lines.
• Dynamic radar cruise control with full-speed range is operating.
• Width of traffic lane is approximately 8.2 to 13.5 ft. (2.5 to 4.1 m).
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or around a gentle curve with a radius of more
than approximately 656 ft. (200 m).
• No system malfunctions are detected. ( P. 536)
• Vehicle does not accele rate or decelerate by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for changing lanes.
• ABS, VSC, TRAC and PCS are not operating.
• TRAC or VSC is not turned off.
• Steering assist function is not operating.

3074-5. Using the driving support systems
4
Driving
RX450h_U_OM0E013U
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the following conditions are met.
• LDA is turned on.
• Vehicle speed is approximatel y 32 mph (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approx imately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or around a gentle curve with a radius of more
than approximately 492 ft. (150 m).
• No system malfunctions are detected. ( P. 536)
●Steering assist function
This function operates when all of the follo wing conditions are met in addition to the
operation conditions for the lane departure alert function.
• Setting for “Steering Assist” in of the multi-information display is set to “On”.
(  P. 109)
• Vehicle is not accelerated or dece lerated by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for changing lanes.
• ABS, VSC, TRAC and PCS are not operating.
• TRAC or VSC is not turned off.
●Vehicle sway warning
This function operates when all of the following conditions are met.
• Setting for “Sway Warning” in of the multi-information display is set to “On”.
(  P. 109)
• Vehicle speed is approximatel y 32 mph (50 km/h) or more.
• Width of traffic lane is approx imately 9.8 ft. (3 m) or more.
• No system malfunctions are detected. ( P. 536)