Lexus IS300h 2017 Workshop Manual

511-1. For safe use
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For safety and security
IS300h_EE(OM53D89E)
■Types of collisions that may not deploy the SRS airbags (SRS side and curtain shield air-
bags)
The SRS side and curtain shield airbags may not activate if the vehicle is subjected to a
collision from the side at certain angles, or a collision to the side of the vehicle body other
than the passenger compartment.
The SRS side airbags do not generally inflate if the vehicle is involved in a frontal or rear
collision, if it rolls over, or if it is involved in a low-speed side collision.
The SRS curtain shield airbags do not generally inflate if the vehicle is involved in a rear collision, if it rolls over, or if it is involved in a low-speed side or low-speed frontal collision.
●Collision from the side to the vehicle body
other than the passenger compartment
●Collision from the side at an angle
●Collision from the front
●Collision from the rear
●Vehicle rollover
●Collision from the rear
●Vehicle rollover

521-1. For safe use
IS300h_EE(OM53D89E)
■When to contact any authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer
In the following cases, the vehicle will require inspection and/or repair. Contact any
authorized Lexus retailer or Lexus authorized re pairer, or any reliable repairer as soon as
possible.
●Any of the SRS airbags have been inflated.
●The front of the vehicle is damaged or deformed, or was involved in an accident that
was not severe enough to cause the SRS front
airbags to inflate.
●A portion of a door or its surrounding area is damaged or deformed, or the vehicle was
involved in an acciden t that was not severe
enough to cause the SRS side and curtain shield airbags to inflate.
●The pad section of the steering wheel, dash-
board near the front passenger airbag or
lower portion of the instrument panel is scratched, cracked, or otherwise damaged.
●The surface of the seats with the side airbag is
scratched, cracked, or otherwise damaged.
●The portion of the front pillars, rear pillars or
roof side rail garnishes (padding) containing
the curtain shield airbags inside is scratched, cracked, or otherwise damaged.

531-1. For safe use
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For safety and security
IS300h_EE(OM53D89E)
“PASSENGER AIR BAG” indicator
The “ON” indicator light turns on when
the airbag system is on (only when the power switch is in ON mode).
Airbag manual on-off switch
Insert the mechanical key into the cylin-
der and rotate to the “OFF” position.
The “OFF” indicator light turns on (only when the power switch is in ON mode).
Airbag manual on-off system
This system deactivates the front passenger airbag and front passenger knee
airbag.
Only deactivate the airbags when using a child restraint system on the front
passenger seat.
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2
Deactivating the front seat passenger airbag and front passenger knee
airbag

541-1. For safe use
IS300h_EE(OM53D89E)
■“PASSENGER AIR BAG” indicator information
If any of the following problems occur, it is possible that there is a malfunction in the sys-
tem. Have the vehicle inspected by any au thorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●Neither “ON” nor “OFF” comes on.
●The indicator light does not change when th e airbag manual on-off switch is switched to “ON” or “OFF”.
WARNING
■When installing a child restraint system
For safety reasons, always inst all a child restraint system in a rear seat. In the event that the rear seat cannot be used, the front seat can be used as long as the airbag manual
on-off system is set to off.
If the airbag manual on-off system is left on, the strong impact of the airbag deployment (inflation) may cause seriou s injury or even death.
■When a child restraint system is not installed on the front passenger seat
Ensure that the airbag manual on-off system is set to on. If it is left off, the airbag may not deploy in the event of an accident, which may result in
serious injury or even death.

551-1. For safe use
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For safety and security
IS300h_EE(OM53D89E)
When the sensors located at the back of the front bumper detect an impact with
a body, such as a pedestrian, which meets or exceeds the threshold level while
the vehicle is being driven within the operational speed range, the system
becomes operational and raises the rear portion of the hood.
Sensors
Hood
Lifters
Pop Up Hood
In the event of a frontal collision with a body, such as a pedestrian, the Pop Up
Hood system raises the rear portion of the hood to reduce the possibility of a
serious impact to the pedestrian’s he ad area by adding clearance to the
engine compartment.
Pop Up Hood mechanism
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561-1. For safe use
IS300h_EE(OM53D89E)
The Pop Up Hood will operate when the vehicle detects an impact such as the
following:
●The front bumper detects a frontal impact equivalent to or greater than that of
a pedestrian while the vehicle being driv en within the operational speed range
of approximately 25 to 55 km/h (16 to 34 mph). (The system is operated by
an impact of threshold level or greater, even in the case of a minor collision
that may not leave a trace on the fron t bumper. Also, depending on the impact
conditions or vehicle speed , the system may be operated by a collision with a
light or small object or a small animal.)
●In other situations the system may oper ate when an impact is applied to the
lower part of the vehicle or front bumper, such as the following:
• Colliding with a curb
• Falling into a deep hole
•Landing hard
• Hitting the slope of a parking lot, an undulating road, a protruding object or
falling object
Pop Up Hood operational conditions
WARNING
■When the Pop Up Hood is operated
●Do not pull the hood lock release lever. Doing so after the Pop Up Hood has oper-
ated will further raise the h ood and may cause an injury. Do not drive with the hood raised, as doin g so may block the driver’s vision, possibly
causing an accident.
Do not forcibly push down the hood. As the popped up hood cannot be lowered by hand, doing so may deform th e hood or cause an injury.
If the Pop Up Hood has operated, have the vehicle inspected by any authorized
Lexus retailer or Lexus author ized repairer, or any reliable repairer. If the Pop Up Hood has operated, stop the vehicle in a sa fe place and contact any authorized Lexus
retailer or Lexus authorized repa irer, or any reliable repairer.
●Do not touch the lifters immediately after the Pop Up Hood has operated, as the lift- ers may be hot and burn you.

571-1. For safe use
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For safety and security
IS300h_EE(OM53D89E)
■Pop Up Hood precautions
●Before scrapping your vehicle, make sure to contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
●The Pop Up Hood system cannot be reused once it has operated. Have it replaced by
any authorized Lexus retailer or Lexus auth orized repairer, or any reliable repairer.
■Conditions under which the Pop Up Hood may not operate properly
The Pop Up Hood may not operate prop erly under the following conditions:
●If a pedestrian collides with the right or left corner of the front bumper or the side of the
vehicle. As such impacts may be difficult to detect, the system may not operate.
●If the vehicle speed is not detected correctly, such as if the vehicle is sliding sideways,
the system may not operate properly.
■Conditions under which the Pop Up Hood may not operate
The Pop Up Hood may not operate in the following situations:
●Colliding with a lying pedestrian
●A frontal impact applied to the front bumper while driving at speeds outside of the operational speed range
●A side impact or rear impact
●A vehicle rollover (In some accident si tuations, the Pop Up Hood may operate.)
NOTICE
■Pop Up Hood precautions
●Make sure to close the hood before driving, as the system may not operate properly if
the hood is not fully closed.
●Make sure that all 4 tires are of the specif ied size and inflated to the specified tire
pressure ( P. 652). If tires of a different size are used, the system may not operate
properly.
●If something has hit the area around the front bumper, the sensors may be damaged
even if the Pop Up Hood has not operated. Have the vehicle inspected by any autho-
rized Lexus retailer or Lexus authoriz ed repairer, or any reliable repairer.
●Do not remove or repair the parts or wiring of the Pop Up Hood, as doing so may
cause accidental operation or prevent the sy stem from operating properly. If repair or
replacement is necessary, contact any auth orized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●Do not remove such components as th e front bumper, hood or suspension, or
replace them with non-genuine parts, as doing so may prevent the system from oper- ating properly.
●Do not install anything to the front bumper or hood, as doing so may prevent the sen-
sors from detecting an impact correctly an d prevent the system from operating prop- erly.
●Do not close the hood with force or apply load to the lifters, as doing so may damage
the lifters and prevent the system from operating properly.
●Do not modify the suspension, as changes made to the vehicle height may prevent
the system from op erating properly.

581-1. For safe use
IS300h_EE(OM53D89E)
●It is recommended that children sit in the rear seats to avoid accidental con-
tact with the shift lever, wiper switch etc.
●Use the rear door child-pro tector lock or the window lock switch to avoid
children opening the door while drivin g or operating the power window acci-
dentally.
●Do not let small children operate equi pment which may catch or pinch body
parts, such as the power window, hood, trunk, seats etc.
Safety information for children
Observe the following precautions when children are in the vehicle.
Use a child restraint system appropriat e for the child, until the child becomes
large enough to properly wear the vehicle’s seat belt.
WARNING
Never leave children unattended in the vehicl e, and never allow children to have or use
the key.
Children may be able to start the vehicle or shift the vehicle into neutral. There is also a danger that children may injure themselves by playing with the windows, the moon roof
or other features of the vehicle. In addition, heat build-up or extremely cold tempera-
tures inside the vehicle can be fatal to children.

591-1. For safe use
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For safety and security
IS300h_EE(OM53D89E)
Studies have shown that installing a child restraint on a rear seat is much safer
than installing one on th e front passenger seat.
●Choose a child restraint system that suits your vehicle and is appropriate to
the age and size of the child.
●For installation details, follow the instruct ions provided with the child restraint
system.
General installation instructions are provided in this manual. (P. 67)
●If child restraint system regulations exist in the country where you reside,
please contact any authorized Lexus re tailer or Lexus authorized repairer, or
any reliable repairer for the child restraint system installation.
●Lexus recommends that you use a child restraint system which conforms to
the regulation ECE No.44.
Child restraint systems
Lexus strongly urges the use of child restraint systems.
Points to remember

601-1. For safe use
IS300h_EE(OM53D89E)
Child restraint systems are classified into the following 5 groups according to the
regulation ECE No.44:
Group 0: Up to 10 kg (22 lb.) (0 - 9 months)
Group 0+: Up to 13 kg (28 lb.) (0 - 2 years)
Group I: 9 to 18 kg (20 to 39 lb.) (9 months - 4 years)
Group II: 15 to 25 kg (34 to 55 lb.) (4 years - 7 years)
Group III: 22 to 36 kg (49 to 79 lb.) (6 years - 12 years)
In this owner’s manual, the following 3 types of popular child restraint systems
that can be secured with the seat belts are explained:
Types of child restraints
Baby seat Child seat
Equal to Group 0 and 0+ of ECE
No.44
Equal to Group 0+ and I of ECE
No.44
Junior seat
Equal to Group II and III of ECE No.44