Lexus GS450h 2017 Owner's Manual

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Lexus Safety System+
◆PCS (Pre-Crash Safety system)
 P. 270
◆LKA (Lane-Keeping Assist)
 P. 282
◆AHS (Adaptive High-beam System)
P. 241
◆Automatic High Beam
P. 246
◆RSA (Road Sign Assist)
 P. 291
◆Dynamic radar cruise control with full-speed range
 P. 296
: 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 designed 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.

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The pre-crash safety system is equipped with a sophisticated computer that will
record certain data, such as:
• Accelerator status
• Brake status
• Vehicle speed
• Operation status of the pre-crash safety system functions
• Information (such as the distance and relative speed between your vehicle
and the vehicle ahead or other objects)
The pre-crash safety system does not record conversations, sounds or pictures.
●Data usage
Lexus may use the data recorded in this computer to diagnose malfunctions,
conduct research and development, and improve quality.
Lexus will not disclose the recorded data to a third party except:
• With the consent of the vehicle owner or with the consent of the lessee if
the vehicle is leased
• In response to an official request by the police, a court of law or a govern-
ment agency
• For use by Lexus in a lawsuit
• For research purposes where the data is not tied to a specific vehicle or
vehicle owner
Vehicle data recording

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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 bump er has been subjected to a strong impact, have the vehicle inspected by your any authorized Lexus retailer or Lexus authorizedrepairer, 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 bumper needs to be removed and installed, or
replaced, contact your any authorized Lexus retailer 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., cleanit.
Clean the radar sensor and front grille emblem with a soft cloth so you do not markor damage them.
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WARNING
■To avoid malfunction of the camera sensor
Observe the following precautions.
Otherwise, the camera sensor may not oper ate 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 droplets, 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 defogger to remove the fog, condensation orice. ( P. 352)
●If water droplets cannot be properly removed from the area of the windshield in front of the camera sensor by the windshield wipers, replace the wiper insert or wiperblade.
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 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 Lexusauthorized 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 install an antenna or attach stickers
(including transparent stickers) or other items to the area of the windshield in front of thecamera sensor (shaded area in the illustra-
tion).

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WARNING
●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.

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■Certification

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PCS (Pre-Crash Safety system)
◆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 possibility of a frontal collision is high,
the system applies greater braking force in relation to how strongly the brake
pedal is depressed.
: If equipped
The pre-crash safety 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 dr iver 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-crash safety system can be disabled/enabled and the warning timing
can be changed. ( P. 273)
*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-crash braking func-
tion (automatic braking function) may not be available. Contact any authorized
Lexus retailer or Lexus authorized repair er, or any reliable repairer for details.