2017 Lexus IS300h horn

1863-4. Adjusting the steering wheel and mirrors
IS300h_EE(OM53D89E)
To sound the horn, press on or close to
the mark.
■The steering wheel can be adjusted when (power type)
The power switch is in ACCESSORY or ON mode*.
*: If the driver’s seat belt is fastened, the steering wheel can be adjusted regardless of
power switch mode.
■Automatic adjustment of the steering position (if equipped)
A desired steering position ca n be entered to memory and recalled automatically by the
driving position memory system. ( P. 177)
■Power easy access system (if equipped)
The steering wheel and driver’s seat move in accordance with power switch mode and
the driver’s seat belt condition. ( P. 177)
Horn
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an accident, result- ing in death or serious injury.
■After adjusting the steering wheel (manual type)
Make sure that the steering wheel is securely locked. Otherwise, the steering wheel may move su ddenly, possibly causing an accident, and
resulting in death or serious injury. Also, th e horn may not sound if the steering wheel is
not securely locked.

3164-5. Using the driving support systems
IS300h_EE(OM53D89E)
WARNING
■Sensor detection information
●The sensor’ detection areas are limited to the areas around the vehicle’ bumper.
●Certain vehicle conditions and surrounding environments, such as the following, may
affect the ability of the sensor s to correctly detect objects. Pay particular attention in the following situations. Failure to do so may result in the vehicle being driven
unsafely, possibly leading to an accident.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve this prob- lem.)
• The sensor is frozen. (Thawing th e area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an abnormal dis- play, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side. • On an extremely bumpy road, on an incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle engines, air
brakes of large vehicles, or other lo ud noises producing ultrasonic waves. • There is another vehicle equipped with parking assist sensors in the vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna. • Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb. • In harsh sunlight or intense cold weather.
• The area directly under the bumpers is not detected.
• If obstacles draw too close to the sensor. • A non-genuine Lexus suspension (low ered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there ar e instances in which, because of their shape, signs and other objects may be judged by a sensor to be closer than they are.
●The shape of the obstacle may prevent a sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materi als that absorb sound waves
• Sharply-angled objects • Low obstacles
• Tall obstacles with upper sections projec ting outwards in the direction of your
vehicle • People, animals and other moving objects
• People wearing certain types of clothing

6268-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 629)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 86)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioning due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. ( P. 627)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 631)
●The 12-volt battery terminal connections may be loose or corroded.
( P. 522)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perfor m the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( P. 219)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.

6278-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. (P. 631)
●One or both of the 12-volt battery terminals may be disconnected.
( P. 522)
Contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer if the problem canno t be repaired, or if repair procedures are unknown.
When the hybrid system does not start, the following steps can be used as an
interim measure to start the hybrid system if the power switch is functioning nor-
mally.
Do not use this starting procedur e except in cases of emergency.
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for ab out 15 seconds while depressing the
brake pedal firmly.
Even if the hybrid system can be starte d using the above steps, the system may
be malfunctioning. Have the vehicle insp ected by any authorized Lexus retailer
or Lexus authorized repairer , or any reliable repairer.
The interior lights and headlights do not turn on, or the horn does not
sound.
Emergency start function
1
2
3
4

670What to do if... (Troubleshooting)
IS300h_EE(OM53D89E)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 193)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
( P. 221)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( P. 577)
●The parking brake indicator is on
Is the parking brake released? ( P. 235)
Depending on the situation, other type s of warning buzzer may also sound.
( P. 575, 581)

●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. ( P. 92)
Do one of the following to deactivate or stop the alarm:
• Unlock the doors or open the trunk using the entry function or wireless
remote control.
• Start the hybrid system.
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds (if equipped)

680Alphabetical index
IS300h_EE(OM53D89E)
Hooks
Cargo hooks....................................... 488
Coat hooks ...........................................495
Retaining hooks (floor mat)............. 34
Horn ............................................................ 186
Hybrid battery (traction battery)........ 81
Hybrid battery (traction battery)
air vents..................................................... 82
Hybrid system ............................................77
Emergency shut off system.............. 82
Energy monitor/
consumption screen ....................... 127
EV drive mode ................................... 224
High voltage components .................81
Hybrid System Indicator ................. 109
Hybrid system precautions................81
Hybrid vehicle driving tips ........... 358
If the hybrid system
will not start ....................................... 626
Overheating .........................................636
Power (ignition) switch .....................219
Starting the hybrid system...............219
Hybrid System Indicator ..................... 109
Hybrid transmission ............................. 226
If the shift lever cannot be
shifted from P ..................................... 231
Paddle shift switches ........................ 228
S mode .................................................... 229
Identification
Engine ..................................................... 645
Vehicle.................................................... 645
Ignition switch (power switch) ..........219
Illuminated entry system .................... 482
Immobilizer system................................. 86
Indicators ...................................................102
Initialization
Engine oil maintenance data .........518
Moon roof ............................................... 199
Multi-information display...................119
Power windows ................................... 194
Tire pressure warning
system...................................................527
Inside door handle lights .................... 481
Inside rear view mirror .........................187
Instrument panel light control .......... 108
Interior lights............................................ 481
Wattage ................................................. 654
Intrusion sensor and tilt sensor .......... 95
ISOFIX rigid anchors .............................67
I