2021 LEXUS LS500 horn

1413-4. Adjusting the steering wheel and mirrors
3
Before driving
3-4.Adjusting the steering wheel and mirrors
Operating the switch moves the steer-
ing wheel in the following directions:
1Up
2 Down
3 Toward the driver
4 Away from the driver
■The steering wheel can be adjusted
when
The engine switch is in ACCESSORY or
IGNITION ON mode
*.
*: If the driver’s seat belt is fastened, the steering wheel can be adjusted regard-
less of engine switch mode.
■Automatic adjustment of the steering
position
A desired steering position can be entered
to memory and recalled automatically by
the driving position memory system.
(  P.133)
■Power easy access system
The steering wheel and driver’s seat move
in accordance with engine switch mode and
the driver’s seat belt condition. ( P.133)
■Customization
Some functions can be customized.
(  P.476)
Press on or close to the mark.
Steering wheel
Adjustment procedure
WARNING
■Caution while driving
Do not adjust the steering wheel while
driving.
Doing so may cause the driver to mis-
handle the vehicle and cause an acci-
dent, resulting in death or serious injury.
Sounding the horn

2754-5. Using the driving support systems
4
Driving
■If a battery terminal has been discon-
nected and reconnected
The system needs to be initialized. To initial-
ize the system, drive the vehicle straight
ahead for 5 seconds or more at a speed of
approximately 22 mph (35 km/h) or more.
Additionally, for vehicles with the Parking
Support Brake function, turn the steering
wheel fully to the left and right with the vehi-
cle stopped.
■Sensor detectio n information
●The following situations may occur
during use.
• The sensors may be able to only detect
objects near the front and rear bumpers.
• Depending on the shape of the object and other factors, the detection distance
may shorten, or detection may be impos-
sible.
• There will be a short delay between
object detection and display. Even at low
speeds, there is a possibility that the
object will come within the sensor’s
detection areas before the display is
shown and the warning beep sounds.
• It might be difficult to hear the buzzer due
to the volume of the audio system or air
flow noise of the air conditioning system.
• It may be difficult to hear the buzzer if
buzzers for other systems are sounding.
■Conditions under which the function
may not function correctly
Certain vehicle conditions and the sur-
rounding environment may affect the ability
of a sensor to correctly detect objects. Par-
ticular instances where this may occur are
listed below.
●There is dirt, snow, water drops or ice on
a sensor. (Cleaning the sensors will
resolve this problem.)
●A sensor is frozen. (Thawing the area will
resolve this problem.)
In especially cold weather, if a sensor is
frozen the sensor display may be dis-
played abnormally, or objects, such as a
wall, may not be detected.
●A sensor is covered in any way.
●When a sensor or the area around a sen-
sor is extremely hot or cold.
●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.
●A sensor is coated with a sheet of spray
or heavy rain.
●If a sensor is hit by a large amount of
water, such as when driving on a flooded
road.
●If the vehicle is significantly tilted.
●The vehicle is approaching a tall or
curved curb.
●If objects draw too close to the sensor.
■Objects which may not be properly
detected
The shape of the object may prevent the
sensor from detectin g it. Pay particular
attention to the following objects:
●Wires, fences, ropes, etc.
●Cotton, snow and other materials that
absorb sound waves
●Sharply-angled objects
●Low objects
●Tall objects with upper sections project-
ing outwards in the direction of your vehi-
cle
People may not be de tected if they are
wearing certain types of clothing.

2924-5. Using the driving support systems
to normal)
• If heavy rain or water strikes a sensor
• When driving in incl ement weather such
as fog, snow or a sandstorm
• When strong winds are blowing
●Other ultrasonic wave sources
• When vehicle horns, vehicle detectors, motorcycle engines, air brakes of large
vehicles, the clearance sonar of other
vehicles or other devices which produce
ultrasonic waves are near the vehicle
• If a sticker or an el ectronic component,
such as a backlit license plate (especially
fluorescent type), fog lights, fender pole
or wireless antenna is installed near a
sensor
●Changes in the vehicle posture
• If the vehicle is significantly tilted
• If the front of the vehicle is raised or low- ered due to the carried load
• If the orientation of a sensor has been changed due to a collision or other
impact
■Situations in which the Parking Support
Brake function (stati c objects) may not
operate properly
In some situations, such as the following, this
function may not operate properly.
●Weather
• When a sensor or the area around a sen-
sor is extremely hot or cold
• When strong winds are blowing
• If a sensor is covered with water drops, ice, snow, dirt, etc. (when cleared, the sys-
tem will return to normal)
• If heavy rain or water strikes a sensor
• When driving in incl ement weather such
as fog, snow or a sandstorm
• When the sensor is frozen (Once the
sensor thaws, the system will return to
normal)
●Vehicle surroundings
• When an object that cannot be detected is between the vehicle and a detected
object
• If an object such as a vehicle, motorcycle, bicycle or pedestrian cuts in front of the
vehicle or runs out from the side of the
vehicle
• The vehicle is approaching a tall or
curved curb.
• On an extremely bumpy road, on an incline, on gravel, or on grass.
• If objects draw too close to the sensor.
●Other ultrasonic waves sources
• When vehicle horns, vehicle detectors, motorcycle engines, air brakes of large
vehicles, the clearance sonar of other
vehicles or other de vices which produce
ultrasonic waves are near the vehicle
• If a sticker or an electronic component,
such as a backlit license plate (especially
fluorescent type), fog lights, fender pole
or wireless antenna is installed near a
sensor
●Changes in the vehicle posture
• If the vehicle is significantly tilted
• If the front of the vehicle is raised or low- ered due to the carried load
• If the orientation of a sensor has been
changed due to a collision or other
impact
• When equipment that may obstruct a sensor is installed, such as a towing eye-
let, bumper protector (an additional trim
strip, etc.), bicycle carrier, or snow plow
• If the suspension has been modified or tires of a size othe r than specified are
installed
• If a sensor has been painted or covered with a sticker, etc.

4397-2. Steps to take in an emergency
7
When trouble arises
■In some conditions (such as at high tem-
peratures)
For XXX/XXRXX size tires: You cannot
continue driving for up to 80 miles (50
km).
For XXX/XXRFXX size tires: You cannot
continue driving for up to 160 miles (100
km).
■For the detailed information on run-flat
tires
See the tire warranty booklet.
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 fol-
lowing correct starting procedures.
( P.174)
 There may be a malfunction in the
engine immobilizer system.
( P.64)
 There may be a malfunction in the
shift control system.
* ( P.177, 437)
*: It may not be possible to shift the shift
position from P.
One of the following may be the cause
of the problem:
 The battery may be discharged.
NOTICE
■When replacing the tires
When removing or fitting the wheels,
tires or the tire pressure warning valve
and transmitter, contact your Lexus
dealer as the tire pr essure warning valve
and transmitter may be damaged if not
handled correctly.
■When driving over bumps
If a vehicle has a flat tire, the vehicle
height will be lower than usual. Ensure
that nothing strikes the bottom of the
vehicle.
■To avoid damage to the tire pressure
warning valves and transmitters
When a tire is repaired with liquid seal-
ants, the tire pressu re warning valve and
transmitter may not operate properly. If a
liquid sealant is used , contact your Lexus
dealer or other qualified service shop as
soon as possible. Make sure to replace
the tire pressure warning valve and trans-
mitter when replacing the tire. ( P.398)
If the engine will not start
If the engine will not start even
though correct starting procedures
are being followed (P.174), con-
sider each of the following points:
The engine will not start even
though the starter motor oper-
ates normally.
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.

4407-2. Steps to take in an emergency
( P.444)
 The battery terminal connections
may be loose or corroded.
( P.391)
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.440)
One of the following may be the cause
of the problem:
 One or both of the battery terminals
may be disconnected. ( P.391)
 The battery may be discharged.
( P.444)
 There may be a malfunction in the
steering lock system.
Contact your Lexus dealer 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 nor- mally.
Do not use this starting procedure
except in cases of emergency.
1
Press the parking brake switch to
check that the parking brake is set.
(P.186)
Parking brake indicator will come on.
2 Turn the engine switch to ACCES-
SORY mode.
3 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
malfunctioning. Have the vehicle
inspected by your Lexus dealer.
The starter motor does not turn
over
The starter motor does not turn
over, the interior lights and head-
lights do not turn on, or the horn
does not sound.
Starting the engine in an emer-
gency

505What to do if... (Troubleshooting)
In this case, the engine can be started in a
temporary way. (P.443)
Is the battery discharged?
( P.444)
 It is locked automatically to prevent
theft of the vehicle. ( P.174)
 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.155)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY mode for a period of
time. ( P.177)
 The seat belt reminder light is flash-
ing
Are the driver and the front passenger
wearing the seat belts? ( P.430)
 The parking brake indicator is on
Is the parking brake released? ( P.186)
Depending on the situation, other
types of warning buzzer may also sound. (
P.427, 436)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.66)
Do one of the following to deactivate
or stop the alarms:
 Except for Canada: Unlock the
doors.
 Except for Canada: Open the trunk.
 For Canada: Unlock the doors or
open the trunk using the entry func-
tion or wireless remote control.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (The alarm will be
deactivated or stopped after a few
seconds.)
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.436)
 When a warning light turns on or a
warning message is displayed, refer
to P.427, 436.
The steering wheel cannot be
turned after the engine is
stopped
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
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed

511Alphabetical Index
Seat heaters .................................................. 336
Seat position memory ...............................133
Seat ventilators............................................ 336
Front side marker light Light switch .................................................... 190
Replacing light bulbs..................................416
Front turn signal lights Replacing light bulbs..................................416
Turn signal lever .......................................... 185
Fuel Capacity ......................................................... 457
Fuel gauge .............................................. 75, 78
Fuel pump shut off system .................... 426
Information ....................................................465
Refueling ........................................................200
Type.................................................................. 457
Warning light ...............................................430
Fuel consumption Average fuel economy .............................. 84
Current fuel consumption........................ 84
Fuel filler door If the fuel filler door cannot be opened........................................................................... 441
Refueling ........................................................200
Fuel gauge ................................................. 75, 78
Fuel pump shut off system........................ 426
Fuses ................................................................... 412
G
Garage door opener ................................. 360
Gauges ....................................................... 75, 78
Gear Position................................................... 86
G-force............................................................... 86
Glove box ....................................................... 345
Glove box light ............................................. 346
H
Hands Free Power Trunk Lid .................. 109
Head restraints .............................................. 138
Headlight aim ..................................................415 Headlights
Adaptive Front-lighting System (AFS)............................................................................192
Automatic High Beam system ............. 193
Light switch .................................................... 190
Replacing light bulbs ................................. 416
Head-up display.............................................. 89 Driving information display area ...........89
Driving support system display area .. 92
Eco Driving Indicator.................................. 93
HUD (Head-up display) switch ..............91
Navigation system-linked display ........89
Pop-up display ............................................... 92
Settings.................................................................91
Heated steering wheel .............................. 336
Heaters Front automatic air conditioning system.......................................................................... 323
Heated steering wheel ............................336
Outside rear view mirrors..................... 324
Rear automatic air conditioning system
..........................................................................333
Seat heaters ..................................................336
Height control Electronically modulated air suspension..........................................................................302
Hill-start assist control ............................... 304
Hood Open................................................................. 381
Pop Up Hood................................................. 37
Hooks Coat hooks ...................................................353
Retaining hooks (floor mat) ..................... 22
Horn ..................................................................... 141
HUD (Head-up display) switch .................. 91
I
I/M test ............................................................ 378
Identification Engine.............................................................. 457
Vehicle ........................................................... 456