2014 Lexus IS250 horn

1603-4. Adjusting the steering wheel and mirrors
IS250_EE(OM53C51E)
To sound the horn, press on or close to
the mark.
■The steering wheel can be adjusted when (power type)
The engine switch is in ACCESSORY or IGNITION ON mode
*.
*: If the driver’s seat belt is fastened, the steering wheel can be adjusted regardless of
engine switch mode.
■Automatic adjustment of the steering position (if equipped)
A desired steering position can be entered to memory and recalled automatically by the
driving position memory system. (→P. 1 5 1 )
■Power easy access system (if equipped)
The steering wheel and driver’s seat move in accordance with engine switch mode and
the driver’s seat belt condition. (→P. 151)
Horn
CAUTION
■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 suddenly, possibly causing an accident, and
resulting in death or serious injury. Also, the horn may not sound if the steering wheel is
not securely locked.

2524-5. Using the driving support systems
IS250_EE(OM53C51E)
■Sensor detection information
●The sensor’s detection areas are limited to the areas around the vehicle’s front corner
and rear bumpers.
●Certain vehicle conditions and the surrounding 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 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 (lowered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there are instances in which, because of their shape,
signs and other objects may be judged by the sensor to be closer than they are.
●The shape of the obstacle may prevent the sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your vehi-
cle
●The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distance
may shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obstacle detection and display. Even at slow
speeds, there is a possibility that the obstacle will come within the sensor’s detection
areas before the display is shown and the warning beep sounds.
• Thin posts or objects lower than the sensor may not be detected when approached,
even if they have been detected once.
• It might be difficult to hear beeps due to the volume of the audio system or air flow
noise of the air conditioning system.
■If a message is displayed on the multi-information display
→P. 4 8 4

5218-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(→P. 1 9 2 )
●There may be a malfunction in the engine immobilizer system.
(→P. 77)
One of the following may be the cause of the problem:
●The battery terminal connections may be loose or corroded.
●The battery may be discharged. (→P. 5 2 7 )
The engine starting system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. (→P. 522)
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed (→P. 192), consider each of the following points:
The engine will not start even though the starter motor operates nor-
mally.
The starter motor turns over slowly, the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over

5228-2. Steps to take in an emergency
IS250_EE(OM53C51E)
One of the following may be the cause of the problem:
●One or both of the battery terminals may be disconnected.
●The battery may be discharged. (→P. 5 2 7 )
●There may be a malfunction in the steering lock system.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional if the problem cannot be repaired, or if repair procedures are
unknown.
When the engine does not start, the following steps can be used as an interim
measure to start the engine if the engine switch is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while depressing the
brake pedal firmly.
Even if the engine can be started using the above steps, the system may be mal-
functioning. Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
The starter motor does not turn over, the interior lights and headlights
do not turn on, or the horn does not sound.
Emergency start function
1
2
3
4

566What to do if... (Troubleshooting)
IS250_EE(OM53C51E)
●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. 1 6 7 )
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. (→P. 1 9 4 )
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (→P. 4 7 8 )
●The parking brake indicator is on
Is the parking brake released? (→P. 2 0 5 )
Depending on the situation, other types of warning buzzer may also sound.
(→P. 4 76 , 4 8 2 )

●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. 8 3 )
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds (if equipped)

574Alphabetical index
IS250_EE(OM53C51E)
Fuel consumption
Average fuel economy ...................... 101
Current fuel consumption................ 101
Fuel filler door ..........................................221
If the fuel filler door
cannot be opened ......................... 223
Refueling .................................................. 221
Fuel gauge .................................................. 95
Fuel pump shut off system ................. 475
Fuses .......................................................... 445
Gauges ........................................................ 95
Gear positions ....................................... 202
Glove box ................................................ 392
Glove box light ...................................... 392Hands-free system
(for cellular phone) ........................... 345
Head restraints ........................................156
Headlight cleaner...................................215
Headlights ............................................... 206
Automatic High Beam
system.................................................. 209
Discharge headlights
precautions ....................................... 462
Follow me home system................ 207
Light switch........................................... 206
Replacing light bulbs ......................... 461
Wattage ................................................. 548
Heaters ..................................................... 376
Air conditioning system ................. 376
Heated steering wheel ................... 387
Outside rear view mirrors ............ 382
Seat heaters..........................................388
Hill-start assist control ........................ 265
Hood ............................................................415
Open ......................................................... 415
Pop Up Hood ........................................ 54
Hooks
Cargo hooks ....................................... 395
Coat hooks........................................... 402
Retaining hooks (floor mat) .............32
Horn ............................................................ 160
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