2018 Lexus ES300h horn

1393-4. Adjusting the steering wheel and mirrors
ES300h_OM_OM33D45U_(U)
3
Operation of each component
To sound the horn, press on or close to
the mark.
■The power adjustment type steering wheel can be adjusted when
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 (power adjustment type)
A desired steering position ca n be entered to memory and recalled automatically by the
driving position memory system. (→ P. 130)
■Power easy access system (power adjustment type)
The steering wheel and driver’s seat move in accordance with power switch mode and
the driver’s seat belt condition. ( →P. 130)
■After adjusting the steering wh eel (manual adjustment type)
Make sure that the steering wheel is securely locked.
The horn may not sound if the steer ing wheel is not securely locked.
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 adjustment 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.

ES300h_OM_OM33D45U_(U)
2434-5. Using the driving support systems
4
Driving
■The intuitive parking assist can be operated when
●Front center sensors:
• The power switch is in ON mode.
• The shift lever is in a position other than P or R.
• The vehicle speed is less than about 6 mph (10 km/h).
●Front corner sensors:
• The power switch is in ON mode.
• The shift lever is in a position other than P.
• The vehicle speed is less than about 6 mph (10 km/h).(At any speed when the shift lever is in R)
●Rear corner and rear center sensors:
• The power switch is in ON mode.
• The shift lever is in R.
■Intuitive parking assist display
When an obstacle is de tected while the Lexus parking assist monitor is in use, the warn-
ing indicator will appear in the upper part of the screen even if the display setting has
been set to off.
■Sensor detectio n information
●The sensor’s detection areas ar e limited to the areas around the vehicle’s front corners
and rear bumper.
●Certain vehicle conditions and the surroundi ng environment may affect the ability of
the sensor to correctly detect obstacles. Particular instances where this may occur are
listed below.
• There is dirt, snow or ice on the sensor . (Wiping the sensors will resolve this prob-
lem.)
• The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an abnormal
display, 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 loud 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 re ceives 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 the sensor to be closer than they are.

523
ES300h_OM_OM33D45U_(U)8-2. Steps to take in an emergency
8
When trouble arises
If the hybrid system will not start
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (
→P. 526)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( →P. 76)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioni ng 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. 524)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 527)
●The 12-volt battery terminal connections may be loose or corroded.
(→ P. 457)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 527)
●One or both of the 12-volt battery terminals may be disconnected. ( →P. 457)
Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
Reasons for the hybrid system not star ting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( →P. 168)
The interior lights and headlights are d im, or the horn does not sound or
sounds at a low volume.
The interior lights and headlights do not turn on, or the horn does not
sound.

586What to do if... (Troubleshooting)
ES300h_OM_OM33D45U_(U)
●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. 170)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts? (→P. 504)
●The parking brake indicator is on
Is the parking brake released? ( →P. 181)
Depending on the situation, other types of warning buzzer may also sound.
(→ P. 503, 509)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (→ P. 78)
To stop the alarm, turn the power switch to ON mode or start the hybrid system.
●Is the electronic key left inside the vehicle or the moon roof opened?
Check the message on the multi-information display. (→ P. 509)
●When a warning light turns on or a warning message is displayed, refer to
P. 503, 509. The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

594Alphabetical index
ES300h_OM_OM33D45U_(U)
Hands-free system (for cellular phone)
*........................ 345
Head restraints ....................................... 135
Headlights Adaptive Front-lighting System (AFS) ..................................................... 183
Light switch ............................................ 182
Replacing light bulbs......................................... 485, 492
Wattage ................................................. 546
Heaters Air conditioning system ................................................. 384
Heated steering wheel ................... 395
Seat heaters ......................................... 395
Outside rear view mirrors ............ 388
High-voltage components .................... 71
Hill-start assist control .........................272
Hood .......................................................... 445
Hooks Cargo hooks ....................................... 403
Coat hooks ............................................ 410
Grocery bag hooks......................... 403
Retaining hooks (floor mat) ............. 28
Horn .............................................................139
Hybrid battery (traction battery) .................................... 71
Hybrid battery (traction battery) air vents .................72 Hybrid system............................................ 67
Emergency shut off system .............. 72
Energy monitor/consumption screen ..................................................... 96
EV drive mode ..................................... 173
High voltage components ................. 71
Hybrid System Indicator ...................88
Hybrid system precautions ............... 71
Hybrid vehicle driving tips ............ 278
If the hybrid system will not start ............................................... 523
Overheating...........................................531
“Power” (ignition) switch ................ 168
Starting the hybrid system.............. 168
Vehicle proximity notification system ..................................................... 68
Hybrid System Indicator ...................... 88
Hybrid transmission .............................. 175 If the shift lever cannot be shifted from P .....................................178
H