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2634-2. Driving procedures
4
Driving
RX350/RX200t_EE_OM48F32E
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 indicator 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, th e 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 multi-information disp lay 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 a pplied when the shift lever is in D, M
or N with the system on and the brake pedal has been depressed to stop the
vehicle. The system releases the brake when the accelerator pedal is
depressed with the shift lever in D or M to allow smooth start off.
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2644-2. Driving procedures
RX350/RX200t_EE_OM48F32E
■When the parking brake is set automatically while the system is holding the brakes
The parking brake will not be released aut omatically. 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. 259)
■If “Brake Hold Fault Depress Brake to Deactivate Visit Your Dealer” is displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qua lified and equipped professional 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. 666
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 fo r use when parking the vehicle for a long period of time. Turning the en gine switch off while the system is holding the brake may
release the brake, which would cause the ve hicle to move. When operating the engine switch, depress the brake peda l, shift the shift lever to P and set the parking brake.
Page 301 of 776

3014-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
◆Pre-crash warning
When the system determines that
the possibility of a frontal collision is
high, a buzzer will sound and a warn-
ing message will be displayed on the
multi-information display to urge the
driver to take evasive action.
◆Pre-crash brake assist
When the system determines that the possi bility of a frontal collision is high,
the system applies greater braking force in relation to how strongly the brake
pedal is depressed.
◆Pre-crash braking*3
When the system determines that the possi bility of a frontal collision is high,
the system warns the driver. If the system determines that the possibility of a
frontal collision is extremely high, the brakes are automatically applied to help
avoid the collision or reduce the collision speed.
*3: Depending on the region in which the vehi cle was sold, the pre-crash braking function
may not be available.
◆Suspension control (if equipped)
When the system determines that the possi bility of a frontal collision is high,
the Adaptive Variable Suspension System ( P. 423) will control the damping
force of the shock absorbers to help ma intain an appropriate vehicle posture.
Page 304 of 776
3044-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
■Enabling/disabling the pre-crash safety system
The pre-crash safety system can be enabled/disabled on ( P. 110) of the
multi-information display.
The system is automatically enabled each time the engine switch is turned to IGNI-
TION 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-crash warning timing
The pre-crash warning timing can be changed on (P. 110) of the multi-
information display.
The operation timing setting is retained when the engine 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-crash safety system
1
2
3
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3124-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
●Some pedestrians such as the following may not be detected by the radar sensor and
camera sensor, preventing the system from operating properly*4:
• Pedestrians shorter than approximately 1 m (3 .2 ft.) or taller than approximately 2 m (6.5 ft.)
• Pedestrians wearing oversized clothing (a rain 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 behi nd a vehicle or a large object • Pedestrians who are extremely close to the side of the vehicle (outside rear viewmirror, etc.)
*4: Depending on the region in which the vehicle was sold, the pedestrian detection
function may not be available.
■If the PCS warning light flashes and a warning message is displayed on the multi-infor- mation display
The pre-crash safety system may be temporar ily unavailable or there may be a malfunc-
tion in the system.
●In the following situations, the warning light will turn off, the message will disappear and the system will become operational when normal operating conditions return:
• When the radar sensor or camera sensor or the area around either sensor is hot, such as in the sun• When the radar sensor or camera sensor or the area around either sensor is cold,
such as in an extremely cold environment • When the radar sensor or front grille embl em is dirty or covered with snow, etc. • When the part of the windshield in front of the camera sensor is fogged up or cov-
ered with condensation or ice (Defogging the windshield: P. 542) • If the camera sensor is obstructed, such as when the hood is open or a sticker isattached to the windshield near the camera sensor
●If the PCS warning light continues to flash or the warning message does not disappear,the system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qua lified and equipped professional immediately.
■If VSC is disabled
●If VSC is disabled (P. 425), the pre-crash brake assist and pre-crash braking func-
tions are also disabled.
●The PCS warning light will tu rn on and “VSC Turned Off Pre-Crash Brake System Unavailable” will be displayed on the multi-information display.
Page 314 of 776
3144-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
◆Lane departure alert function
When the system determines that
the vehicle might depart from its
lane, a warning is displayed on the
multi-information display, and either
the warning buzzer sounds or the
steering wheel vibrates to alert the
driver.
When the warning buzzer sounds or the steering wheel vibrates, checkthe surrounding road situation and
carefully operate the steering wheel to move the vehicle back to the cen-ter within the white (yellow) lines.
Functions included in LKA system
Page 315 of 776
3154-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
◆Lane departure control function
When the system determines that
the vehicle might depart from its
lane, the system provides assistance
as necessary by operating the steer-
ing wheel in small amounts for a
short period of time to keep the
vehicle in its lane.
If the system detects that the steering wheel has not been operated for afixed amount of time or the steering
wheel is not being firmly gripped, a warning is displayed on the multi-information display and the function
is temporarily canceled.
◆Vehicle sway warning
When the vehicle is swaying or
appears as if it may depart from its
lane multiple times, the warning
buzzer sounds and a message is dis-
played on the multi-information dis-
play to alert the driver.
Page 316 of 776
3164-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
◆Lane-keeping assist function
This function is linked with radar
cruise control and provides the
required assistance by operating the
steering wheel to keep the vehicle in
its current lane.
When radar cruise control is not operating, the lane-keeping assistfunction does not operate.
Except for Israel: If the system detects that the steering wheel hasnot been operated for a fixed amount
of time or the steering wheel is not being firmly gripped, a warning is dis-played on the multi-information dis-
play and the function is temporarily canceled.
For Israel: If the system detects that
the steering wheel has not been operated for a fixed amount of timeor the steering wheel is not being
firmly gripped, a warning is displayed on the multi-information display andthe warning buzzer sounds.