steering Lexus IS300h 2017 Owners Manual

5728-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
■While towing
If the hybrid system is off, the power assist for the brakes and steering will not function,
making steering and braking more difficult.
■Wheel nut wrench
Wheel nut wrench is installed in the trunk. ( P. 537)
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■When towing the vehicle
■While towing
●When towing using cables or chains, avoid sudden starts, etc. which place excessive
stress on the towing eyelets, cables or chains. The towing eyelets, cables or chains may become damaged, broken debris ma y hit people, and cause serious damage.
●Do not turn the power switch off.
There is a possibility that the steering wheel is locked and cannot be operated.
■Installing towing eyelet to the vehicle
Make sure that towing eyel et is installed securely.
If not securely installed, towing ey elet may come loose during towing.
Be sure to transport the vehicle with all four
wheels raised off the ground. If the vehicle is
towed with the tires contacting the ground, the
drivetrain and related parts may be damaged, an accident may occur due to a change in
direction of the vehicle or electricity generated
by the operation of the motor may cause a fire to occur depending on the nature of the dam-
age or malfunction.

5738-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
NOTICE
■To prevent damage to the vehicle when towing using a wheel-lift type truck
●Do not tow the vehicle from the rear when the power switch is off. The steering lock
mechanism is not strong enough to hold the front wheels straight.
●When raising the vehicle, ensure adequate ground clearance for towing at the oppo- site end of the raised vehicle. Without ad equate clearance, the vehicle could be dam-
aged while being towed.
■To prevent damage to the vehicle wh en towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the suspension components.

5768-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
SRS warning light Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system  Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.
ABS warning light
Indicates a malfunction in: • The ABS; or
• The brake assist system
 Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer immediately.
Parking brake warning light (warning buzzer)*1
Indicates that the parking brake is engaged
 Release the parking brake.
Electric power steering system warning light (warning buzzer) Indicates a malfunction in the EPS (Electric Power Steering) sys-
tem
 Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer immediately.
(If equipped)
LDA (Lane Departure Alert) indicator
If the LDA indicato r is illuminated:
Indicates a malfunction in the LDA (Lane Departure Alert with
steering control) system.  Check the warning message displayed on the multi-information
display. ( P. 581)
If the LDA indicator flashes:
Indicates that the vehicle has deviated from the lane (while the
LDA [Lane Departure Alert with stee ring control] system is oper- ating)
 Check the area around the vehicle and return the vehicle to
between the lane lines.
Warning lightWarning light/Details/Actions

5798-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insu fficient or the voltage temporarily drops, the electric power steering system warning light may come on and the warning buzzer
may sound.
■When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure an d adjust to the appropriate level.
●If the warning light does not go out even after several minutes, check that the tire infla- tion pressure is at the specifie d level and carry out initialization.
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
■The tire pressure warning light ma y come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caus ed by temperature. In this case, adjusting the tire inflation pressure will turn off the warning light (after a few minutes).
■Conditions that the tire pressure warning system may not function properly
P. 529
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
power switch is turned to ON mode, have it checked by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Warning buzzer
In some cases, the buzzer ma y not be heard due to being in a noisy location or audio
sound.

5808-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus retailer
or Lexus authorized repairer, or any re liable repairer. The vehicle will become
extremely unstable during braking, and the ABS system may fail, which could cause an accident resulting in de ath or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy. When steering wheel operations are heavier than usual, grip the steering wheel firmly
and operate it using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precaution s. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
Vehicles with an emergency tire puncture repair kit
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust- ment, it is probable that you ha ve a flat tire. Check the tires. If a tire is flat, repair the
flat tire by using emergency tire puncture repair kit.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
Vehicles with run-flat tires
●Decelerate to the lowest appropriate speed as soon as possible. Do not drive over 60 km/h (37 mph).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust- ment, it is probable that you have a flat tire. Have the tire replaced by the nearest
authorized Lexus retailer or Lexus author ized repairer, or any reliable repairer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning syst em may not activate immediately.
NOTICE
■To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or makers, as the tire pressure warning system may not operate properly.

5838-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
(If equipped)
Indicates that the vehicle has deviated from the lane (while the LDA [Lane Departure Alert with steering con-
trol] system are operating)
The lane line on the side the vehicle has deviated from flashes in amber.
A buzzer also sounds.
 Check around the vehicle and back to inside of the lane lines.
Indicates that:• The brake fluid level is low; or
• The brake system is malfunctioning
A buzzer also sounds.  Immediately stop the vehicle in a safe place and
contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer. Con- tinuing to drive the vehicle may be dangerous.
Indicates a malfunction in the hybrid system
A buzzer also sounds.
 Immediately stop the vehicle in a safe place and contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
Indicates that one or more of the doors is not fully closed The system also indicates which doors are not fully
closed.
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate that
the door(s) are not yet fully closed.  Make sure that all the doors are closed.
Warning messageDetails/Actions
(Flashes)
(Flashes)

5878-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
Indicates that the vehicle is being driven at 5 km/h (3
mph) or more with the parking brake still engaged A buzzer also sounds.
 Release the parking brake.
Indicates that the shift position was changed and drive
start control was operated wh ile depressing the acceler-
ator pedal A buzzer also sounds.
 Momentarily release the accelerator pedal.
(If equipped)
Indicates that the LDA (Lane Departure Alert with steer-
ing control) system has dete rmined that the driver does
not have their hands on the steering wheel while the steering control function is on
A buzzer also sounds. (For Israel)
 Firmly hold the steering wheel.
(If equipped)
Indicates that steering control function is temporarily canceled due to the LDA (Lane Departure Alert with
steering control) system determining that the driver
does not have their hands on the steering wheel while the steering control function is on
 Firmly hold the steering wheel.
Warning messageDetails/Actions
(Flashes)
(Flashes)

5918-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur- rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
 Clean off the dirt, snow, ice, etc. and drive the vehi- cle with the operation conditions of the BSM func-
tion ( P. 341) satisfied for approximately 10
minutes. If the warning me ssage does not disappear, the sensor may be misaligned. Have the vehicle
inspected by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
(If equipped)
Indicates a malfunction in:
• The cruise control system; or
• The dynamic radar cruise control system Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system. A buzzer also sounds.
 Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
(If equipped)
Indicates a malfunction in the LDA (Lane Departure
Alert with steering control) system
A buzzer also sounds.  Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable
repairer.
(If equipped)
The operation conditions of the camera sensor (tem- perature, etc.) are not met.
 When the operation conditions of the camera sen-
sor (temperature, etc.) are met, the following sys- tems will become available.
• PCS (Pre-Collision System)
• LDA (Lane Departure Alert with steering control) system
•Automatic High Beam
• RSA (Road Sign Assist)
Warning messageDetails/Actions
(Flashes)

5928-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
(If equipped)
Indicates that the system is temporarily unavailable due to a malfunction in a sensor other than the camera sen-
sor
A buzzer also sounds.  Turn the LDA (Lane Departure Alert with steering
control) system off, wait for a little while, and then
turn the LDA (Lane Departure Alert with steering control) system back on.
(If equipped)
Dirt, rain, condensation, ice, snow, etc., are present on the windshield in front of the camera sensor.
The following systems will be temporarily unusable.
• PCS (Pre-Collision System) • LDA (Lane Departure Alert with steering control)
system
•Automatic High Beam • RSA (Road Sign Assist)
 Turn the system off, remove any dirt, rain, condensa-
tion, ice, snow, etc., from the windshield, and then turn the system back on.
(If equipped)
Indicates a malfunction in the PCS (Pre-Collision Sys-tem)
A buzzer also sounds.
 Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
(If equipped)
Indicates a malfunction in the BSM (Blind Spot Monitor)
system
A buzzer also sounds.  Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable
repairer.
Warning messageDetails/Actions
(Flashes)
(Flashes)

5948-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
(If equipped)
Indicates that the LDA (Lane Departure Alert with steer-
ing control) system cannot be used as the vehicle speed is approximately 50 km/h (32 mph) or less
 Drive the vehicle at approximately 50 km/h (32
mph) or more.
(If equipped)
Indicates that LDA (Lane De parture Alert with steering control) system cannot be used due to the vehicle speed
being too high
 Slow down.
Indicates that the hybrid system was stopped while driv-
ing A buzzer also sounds.
 Operate the steering wheel with more force than
usual.
Indicates that the power switch is turned off or turned to
ACCESSORY mode and the driver’s door is opened while the lights are turned on
A buzzer also sounds.
 Turn the lights off.
(If equipped)
Indicates that the moon roof is not fully closed (with the power switch off, and the driver’s door open)
A buzzer also sounds.
 Close the moon roof.
Warning messageDetails/Actions
(Flashes)
(Flashes)