2017 Lexus IS200t warning

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IS200t_EE(OM53D77E)4-5. Using the driving support systems
◆PCS (Pre-Collision System)

P. 246
◆LDA (Lane Departure Alert with steering control)
P. 260
◆Automatic High Beam
P. 221
◆RSA (Road Sign Assist)
P. 269
◆Dynamic radar cruise control
P. 274
Lexus Safety System+

: If equipped
The Lexus Safety System+ consists of the following drive assist systems and
contributes to a safe and comfortable driving experience:
WARNING
■Lexus Safety System+
The Lexus Safety System+ is designed to operate under the assumption that the driver
will drive safely, and is design ed to help reduce the impact to the occupants and the
vehicle in the case of a collision or assist the driver in normal driving conditions.
As there is a limit to the degree of reco gnition accuracy and control performance that
this system can provide, do no t overly rely on this system. The driver is always responsi-
ble for paying attention to the vehicle's surroundings and driving safely.

2404-5. Using the driving support systems
IS200t_EE(OM53D77E)
Two types of sensors, located behind the front grille and windshield, detect infor-
mation necessary to operate the drive assist systems.
Radar sensor
Camera sensor
Sensors
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WARNING
■To avoid malfunction of the radar sensor
Observe the following precautions.
Otherwise, the radar sensor may not operat e properly, possibly leading to an accident
resulting in death or serious injury.
●Keep the radar sensor and front grille emblem clean at all times.
●Do not attach accessories, stickers (including transparent stickers) or other items to
the radar sensor, front grille emblem or surrounding area.
●Do not subject the radar sensor or surrounding area to a strong impact.
If the radar sensor, front grille, or front bumper has been subjected to a strong impact,
have the vehicle inspected by any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
●Do not disassemble the radar sensor.
●Do not modify or paint the radar sensor, front grille emblem or surrounding area.
●If the radar sensor, front grille, or front bu mper needs to be removed and installed, or
replaced, contact any authorized Lexus reta iler or Lexus authorized repairer, or any
reliable repairer.
Radar sensor
Front grille emblem
If the front of the radar sensor or the front or
back of the front grille emblem is dirty or
covered with water droplets, snow, etc., clean
it.
Clean the radar sensor and front grille
emblem with a soft cloth so you do not mark
or damage them.1
2

2414-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
WARNING
■To avoid malfunction of the camera sensor
Observe the following precautions.
Otherwise, the camera sensor may not operate properly, possibly leading to an acci-
dent resulting in death or serious injury.
●Keep the windshield clean at all times.
• If the windshield is dirty or covered with an oily film, water droplets, snow, etc.,
clear the windshield.
• If a glass coating agent is applied to the windshield, it will still be necessary to use
the windshield wipers to remove water dr oplets, etc. from the area of the wind-
shield in front of the camera sensor.
• If the inner side of the windshield where th e camera sensor is installed is dirty, con-
tact any authorized Lexus retailer or Le xus authorized repairer, or any reliable
repairer.
●If the part of the windshield in front of the camera sensor is fogged up or covered with
condensation or ice, use the windshield de fogger to remove the fog, condensation or
ice. ( P. 458)
●If water droplets cannot be properly removed from the area of the windshield in front
of the camera sensor by the windshield wi pers, replace the wiper insert or wiper
blade.
If the wiper inserts or wiper blades need to be replaced, contact any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●Do not install an antenna or attach stickers
(including transparent stickers) or other items
to the area of the windshield in front of the
camera sensor (shaded area in the illustra-
tion).

2424-5. Using the driving support systems
IS200t_EE(OM53D77E)
WARNING
●Do not attach window tinting to the windshield.
●Replace the windshield if it is damaged or cracked.
If the windshield needs to be replaced, contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
●Do not get the camera sensor wet.
●Do not allow bright lights to shine into the camera sensor.
●Do not dirty or damage the camera sensor.
When cleaning the inside of the windshield, do not allow glass cleaner to contact the
lens. Also, do not touch the lens.
If the lens is dirty or damaged, contact any authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
●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 install an electronic device or device that emits strong electric waves near the
camera sensor.
●Do not modify any components of the vehicle around the camera sensor (inside rear
view mirror, etc.) or ceiling.
●Do not attach any accessories that may obstruct the camera sensor to the hood, front
grille or front bumper. Contact any author ized Lexus retailer or Lexus authorized
repairer, or any reliable repairer 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 headlights or other lights.

2464-5. Using the driving support systems
IS200t_EE(OM53D77E)
◆Pre-collision 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-collision brake assist
When the system determines that the possibility of a frontal collision is high,
the system applies greater braking force in relation to how strongly the brake
pedal is depressed.
PCS (Pre-Collision System)

: If equipped
The pre-collision system uses a radar sensor and camera sensor to detect
vehicles and pedestrians
*1 in front of your vehicle. When the system deter-
mines that the possibility of a frontal collision with a vehicle or pedestrian is
high, a warning operates to urge the driver to take evasive action and the
potential brake pressure is increased to help the driver avoid the collision. If
the system determines that the possibility of a frontal collision with a vehicle or
pedestrian is extremely high, the brakes are automatically applied
*2 to help
avoid the collision or help reduce the impact of the collision.
The pre-collision system can be disabl ed/enabled and the warning timing can
be changed. ( P. 250)
*1: Depending on the region in which the vehicle was sold, the pedestrian detection
function may not be available. Contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer for details.
*2: Depending on the region in which the vehicle was sold, the pre-collision braking
function (automatic braking function) may not be available. Contact any authorized
Lexus retailer or Lexus authorized repair er, or any reliable repairer for details.

2484-5. Using the driving support systems
IS200t_EE(OM53D77E)
WARNING
■Limitations of the pre-collision system
●The driver is solely responsible for safe driving. Always drive safely, taking care to
observe your surroundings.
Do not use the pre-collision system instead of normal braking operations under any
circumstances. This system will not prevent collisions or lessen collision damage or
injury in every situation. Do not overly rely on this system. Failure to do so may lead to
an accident, resulting in death or serious injury.
●Although this system is designed to help avoid a collision or help reduce the impact of
the collision, its effectiveness may change according to various conditions, therefore
the system may not always be able to achieve the same level of performance.
Read the following conditions carefully. Do not overly rely on this system and always
drive carefully.
• Conditions under which the system may oper ate even if there is no possibility of a
collision: P. 255
• Conditions under which the system may not operate properly: P. 257
●Do not attempt to test the operation of the pre-collision system yourself, as the system
may not operate properly, poss ibly leading to an accident.
■Pre-collision braking*3
●When the pre-collision braking function is op erating, a large amount of braking force
will be applied.
●If the vehicle is stopped by the operation of the pre-collision braking function, the pre-
collision braking function operation will be canceled after approximately 2 seconds.
Depress the brake pedal as necessary.
●The pre-collision braking function may not operate if certain operations are per-
formed by the driver. If the accelerator pedal is being depressed strongly or the steer-
ing wheel is being turned, the system may de termine that the driver is taking evasive
action and possibly preven t the pre-collision braking function from operating.
●In some situations, while the pre-collision br aking function is operating, operation of
the function may be canceled if the acceler ator pedal is depressed strongly or the
steering wheel is turned and the system dete rmines that the driver is taking evasive
action.
●If the brake pedal is being depressed, the sy stem may determine that the driver is tak-
ing evasive action and possibly delay the operation timing of the pre-collision braking
function.
*3: Depending on the region in which the vehicle was sold, the pre-collision braking
function may not be available.

2494-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
WARNING
■When to disable the pre-collision system
In the following situations, disable the system, as it may not operate properly, possibly
leading to an accident resulting in death or serious injury:
●When the vehicle is being towed
●When your vehicle is towing another vehicle
●When transporting the vehicle via truck, boat, train or similar means of transportation
●When the vehicle is raised on a lift with th e engine running and the tires are allowed to
rotate freely
●When inspecting the vehicle using a drum tester such as a chassis dynamometer or
speedometer tester, or when using an on vehicle wheel balancer
●When a strong impact is applied to the fron t bumper or front grille, due to an accident
or other reasons
●If the vehicle cannot be driven in a stable manner, such as when the vehicle has been
in an accident or is malfunctioning
●When the vehicle is driven in a sporty manner or off-road
●When the tires are not properly inflated
●When the tires are very worn
●When tires of a size other than specified are installed
●When tire chains are installed
●When a compact spare tire or an emergency tire puncture repair kit is used
●If equipment (snow plow, etc.) that may obstruct the radar sensor or camera sensor is
temporarily installed to the vehicle

2504-5. Using the driving support systems
IS200t_EE(OM53D77E)
■Enabling/disabling the pre-collision system
The pre-collision system can be enabled/disabled on ( P. 107) 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-collision warning timing
The pre-collision warning timing can be changed on ( P. 107) 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-collision system
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