
77
1
For safety and security
RX350/RX200t_EE_OM48F32E
1-3. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key registered to the security system (key with a built-in transponder chip) of another vehicle
Engine immobilizer system
The vehicle’s keys have built-in tran sponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-
board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help prev ent vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts.

851-3. Theft deterrent system
1
For safety and security
RX350/RX200t_EE_OM48F32E
●The intrusion sensor detects intruders or movement in the vehicle.
●The tilt sensor detects changes in vehicle inclination, such as when the vehicle
is towed away.
This system is designed to deter and pr event vehicle theft but does not guarantee
absolute security against all intrusions.
■Setting the intrusion sensor and tilt sensor
The intrusion sensor and tilt sensor will be set automatically when the alarm is
set. ( P. 83)
■Canceling the intrusion sensor and tilt sensor
If you are leaving pets or other moving things inside the vehicle, make sure to
disable the intrusion sensor and tilt sensor before setting the alarm, as they will
respond to movement inside the vehicle.
Turn the engine switch off.
Press the intrusion sensor and tilt
sensor cancel switch.
A message will be shown on the
multi-information display in the
instrument cluster.
The intrusion sensor and tilt sen-
sor will revert to on each time the
engine switch is turned to IGNI-
TION ON mode.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modi fied or removed, the proper operation of the system cannot be guaranteed.
Intrusion sensor (if equipped) /Intrusion sensor and tilt sensor
(if equipped)
1
2

912. Instrument cluster
2
Instrument cluster
RX350/RX200t_EE_OM48F32E
Warning lights inform the driver of malfunctions in any of the vehicle’s systems.
Warning lights
*1Brake system warning light
( P. 666)
(if equipped)
LKA indicator ( P. 667)
*1
Brake system warning light
( P. 666)*1
Slip indicator ( P. 668)
*1
(if equipped)
Charging system warning
light ( P. 666)
*1, 3
(if equipped)
PCS warning light
( P. 668)
*1
Malfunction indicator lamp
( P. 666)
*1, 3
(if equipped)
ICS OFF indicator
( P. 668)
*1
SRS warning light
( P. 667)
*1, 2, 3
(if equipped)
Stop & Start cancel
indicator ( P. 669)
*1
ABS warning light
( P. 667) Low fuel level warning light
(
P. 669)
*3
Parking brake indicator
( P. 667) Driver’s and front
passenger’s seat belt
reminder light (
P. 669)
*1, 3
Brake hold operated
indicator ( P. 667)
*4
(if equipped)
Rear passengers’ seat
belt reminder light
( P. 669)
*1Electric power steering
system warning light
( P. 667)*1Tire pressure warning light
( P. 669)
*1Electric power steering
system warning light
( P. 667)*1
Master warning light
( P. 669)

952. Instrument cluster
2
Instrument cluster
RX350/RX200t_EE_OM48F32E
*4: This light illuminates on the outside rear view mirrors.
*5: The light flashes to indicate that the system is operating.
*6: The light comes on when the system is turned off.
*7: This light illuminates on the center panel.
*8: When the outside temperature is approximately 3°C (37°F) or lower, the indicator
will flash for approximately 10 seconds, then stay on.
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning lights not come on when you start the engine, this could mean that these systems are not available to help pro-tect you in an accident, which could result in death or serious injury. Have the vehicle
inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional immediately if this occurs.

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.

3204-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
■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 approximately 50 km/h (32 mph) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approximately 3 m (9.8 ft.) 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 150 m (492 ft.).
• No system malfunctions are detected. ( P. 666)
●Lane departure control function
This function operates when all of the follo wing conditions are met in addition to the
operation conditions for the la ne departure alert function.
• Setting for “Steering Assist” in of the multi-information display is set to “On”.
( P. 110)
• Vehicle is not accelerated or decelerated by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for changing
lanes.
• ABS, VSC, TRC and PCS are not operating.
• TRC or VSC is not turned off.
• Except for Israel: Hands off steerin g wheel alert is not displayed. (P. 321)
●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. 110)
• Vehicle speed is approximately 50 km/h (32 mph) or more.
• Width of traffic lane is approximately 3 m (9.8 ft.) or more.
• No system malfunctions are detected. ( P. 666)
●Lane-keeping assist 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. 110)
• System recognizes white (yellow) lines.
• Dynamic radar cruise control with full-speed range is operating.
• Width of traffic lane is approximately 2.5 to 4.1 m (8.2 to 13.5 ft.).
• 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 200 m (656 ft.).
• No system malfunctions are detected. ( P. 666)
• Vehicle does not accelerate or de celerate by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for changing
lanes.
• ABS, VSC, TRC and PCS are not operating.
• TRC or VSC is not turned off.
• Except for Israel: Hands off steering wheel alert ( P. 321) is not displayed.
• Lane departure control function is not operating.

3304-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
WARNING
■Before using dynamic radar cruise control with full-speed range
Driving safely is the sole resp onsibility of the driver. Do not rely solely on the system, and drive safely by always paying careful attention to your surroundings.
The dynamic radar cruise control with full- speed range provides driving assistance to reduce the driver's burden. However, there are limitations to the assistance provided.
Even when the system is functioning norma lly, the condition of the preceding vehicle as
detected by the system may differ from the condition observed by the driver. There- fore, the driver must always remain alert, as sess the danger of each situation and drive safely. Relying on this system or assuming the system ensures safety while driving can
lead to an accident, resulting in death or serious injury.
■Cautions regarding the driving assist systems
Observe the following precautions, as there are limitations to the assistance provided
by the system. Failure to do so may cause an accident resulting in death or serious injury.
●Assisting the driver to measure following distance
The dynamic radar cruise control with full-sp eed range is only intended to help the driver in determining the fo llowing distance between the driver’s own vehicle and a designated vehicle traveling ahead. It is no t a mechanism that allows careless or inat-
tentive driving, and it is not a system that can assist the driver in low-visibility condi- tions. It is still necessary for driver to pay close attention to the vehicle’s surroundings.
●Assisting the driver to judge proper following distance
The dynamic radar cruise control with full-speed range determines whether the fol- lowing distance between the driver’s own vehicle and a designated vehicle traveling ahead is within a set range. It is not capable of making any other type of judgement.
Therefore, it is absolutely necessary for the driver to remain vigilant and to determine whether or not there is a possibility of danger in any given situation.
●Assisting the driver to operate the vehicle
The dynamic radar cruise control with full-speed range has limited capability to pre- vent or avoid a collision with a vehicle trave ling ahead. Therefore, if there is ever any danger, the driver must take immediate and direct control of the vehicle and act
appropriately in order to ensure the safety of all involved.
■To avoid inadvertent dynamic radar cruise control with full-speed range activation
Switch the dynamic radar cruise control wi th full-speed range off using the “ON/OFF”
button when not in use.

3784-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
●The shape of the obstacle may prevent a sensor from detecting it. Pay particular atten- tion to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves • Sharply-angled objects• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your vehi- cle
●The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distance may shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sensor. • There will be a short delay between obst acle detection and display. Even at slow speeds, there is a possibility that the obstacl e will come within the sensor’s detection
areas before the display is shown and the buzzer sounds. • Thin posts or objects lower than the sens or may not be detected when approached, even if they have been detected once.
• It might be difficult to hear beeps due to the volume of audio system or air flow noise of the air conditioning system.
■If “Clean Parking Assist Sensor” is di splayed on the multi-information display
A sensor may be dirty or covered with snow or ice. In such cases, if it is removed from the sensor, the system should return to normal. Also, due to the sensor being frozen at low temperatures, a malfunction display may
appear or an obstacle may not be detected. If the sensor thaws out, the system should return to normal.
■If “Parking Assist Malfun ction” is displayed on the multi-information display
Depending on the malfunction of the sensor , the device may not be working normally. Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
■Customization
Some functions can be customized. ( P. 376,740)
WARNING
■When using the Lexus parking assist-sensor
Observe the following precautions.
Failing to do so may result in the vehicle be ing unable to be driven safely and possibly cause an accident.
●Do not use the sensor at speeds in excess of 10 km/h (6 mph).
●The sensors’ detection areas and reaction times are limited. When moving forward or reversing, check the areas surrounding the vehicle (especially the sides of the vehi-cle) for safety, and drive slowly, using the brake to control the vehicle’s speed.
●Do not install accessories within the sensors’ detection areas.