Buzzer LEXUS LS500 2018 Workshop Manual

280 4-5. Using the driving support systems
LS500_OM_OM50F54U_(U) • The static object is no longer 6 to 13 ft. (2
to 4 m) away from the vehicle or in the
traveling direction of the vehicle.●
Brake control
• The Parking Support Brake is disabled.
• Approximately 2 seconds have elapsed
since the vehicle was stopped by brake
control.
• The brake pedal is depressed after the
vehicle is stopped by brake control.
• The static object is no longer 6 to 13 ft. (2
to 4 m) away from the vehicle or in the
traveling direction of the vehicle.■
Detection range of the Parking Support
Brake function (static objects)
The detection range of the Parking Support
Brake function (static objects) differs from
the detection range of the intuitive parking
assist. ( → P.261) Therefore, even if the intui-
tive parking assist de tects an object and
provides a warning, the Parking Support
Brake function (static objects) may not start
operating. ■
Objects that the Parking Support Brake
function (static obje cts) may not detect
The sensors may not be able to detect cer-
tain objects, such as the following: ●
Pedestrian●
Cotton cloth, snow, and other materials
that are poor reflectors of ultrasonic
waves●
Objects which are not perpendicular to
the ground, are not perpendicular to the
traveling direction of the vehicle, are
uneven or are waving●
Low objects●
Thin objects such as wires, fences, ropes
and signposts
●
Objects that are extremely close to the
bumper
■
Intuitive parking assist buzzer
Regardless of whether the intuitive parking
assist system is enabled or not ( → P.258), if
the Parking Support Brake function (static
objects) is enabled ( → P.272), the front or
rear sensors detect an object and brake
control is performed, the intuitive parking
assist buzzer will sound to notify the driver of the approximate distance to the object. ■
Situations in which the Parking Support
Brake function (static objects) may
operate even if there is no possibility of a
collision
In some situations, such as the following, the
Parking Support Brake function (static
objects) may operate even though there is
no possibility of a collision. ●
Vehicle surroundings
• When driving on a narrow road
• When driving on a gravel road or in an
area with tall grass
• When driving toward a banner, flag,
low-hanging branch or boom barrier
(such as those used at railroad crossings,
toll gates and parking lots)
• When driving on a narrow path sur-
rounded by a structure, such as in a tun-
nel or on an iron bridge
• When parallel parking
• When there is a rut or hole in the surface
of the road
• When driving on a metal cover (grating),
such as those used for drainage ditches
• When driving on a steep slope
• If a sensor is hit by a large amount of
water, such as when driving on a flooded
road

284 4-5. Using the driving support systems
LS500_OM_OM50F54U_(U) right or left at the re ar of the vehicle at a
traveling speed of less than approxi-
mately 5 mph (8 km/h)●
Vehicles which are approaching from the
right or left at the re ar of the vehicle at a
traveling speed of more than approxi-
mately 15 mph (24 km/h)■
PKSB buzzer
If the Parking Support Brake is enabled and
brake control is performed, a buzzer will
sound to notify the driver. ■
Situations in which the system may
operate even though there is no possi-
bility of a collision
In some situations such as the following, the
Parking Support Brake function
(rear-crossing vehicles) may operate even
though there is no possibility of a collision. ●
When the parking space faces a street
and vehicles are being driven on the
street
●
When a detected vehicle turns while
approaching the vehicle
●
When a vehicle passes by the side of your
vehicle ●
When the distance between your vehicle
and metal objects, such as a guardrail,
wall, sign, or parked vehicle, which may
reflect electrical waves toward the rear of
the vehicle, is short
●
When there are spinning objects near
your vehicle such as the fan of an air con-
ditioning unit ●
When water is spla shed or sprayed
toward the rear bumper, such as from a
sprinkler ■
Situations in which the Parking Support
Brake function (rear-crossing vehicles)
may not operate properly
In some situations, such as the following, the
radar sensors may not detect an object and
this function may not operate properly
●
Stationary objects
●
When a sensor or the area around a sen-
sor is extremely hot or cold
●
If the rear bumper is covered with ice,
snow, dirt, etc.
●
When it is raining he avily or water strikes
the vehicle
●
If the vehicle is significantly tilted
●
When equipment that may obstruct a
sensor is installed, such as a towing eye-

286 4-5. Using the driving support systems
LS500_OM_OM50F54U_(U) *
:If equipped
When a pedestrian is detected behind the vehicle while backing up, the brake
pedal is not depressed or is depressed late.
Displays a message to urge the driver
to take evasive action when a pedes-
trian is detected in the detection area
behind the vehicle. (A message will
also be displayed on the multi-informa-
tion display and head-up display (if
equipped).)
Pedestrian detection icon with
brake reminderParking Support Brake function (rear pedestrians) *
If the rear camera sensor detects a pe destrian behind the vehicle while back-
ing up and the system determines that the possibility of colliding with the
detected pedestrian is high, a buzzer will sound. If the system determines that
the possibility of colliding with the dete cted pedestrian is extremely high, the
brakes will be applied automatically to he lp reduce the impact of the collision.
Examples of system operation
Center Display
A

370 6-2. Maintenance
LS500_OM_OM50F54U_(U) Radiator, con-
denser, inter-
cooler radiator
and intercooler
sub radiator The radiator, con-
denser, intercooler
radiator and inter-
cooler sub radiator
should be free from
foreign objects.
( → P.382)
Washer fluid Is there sufficient
washer fluid?
( → P.383)
Trunk Items Check points
Battery Check the connec-
tions. ( → P.384)
Vehicle interior Items Check points
Accelerator
pedal • The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Automatic trans-
mission “Park”
mechanism •When parked on a
slope and the shift
position is in P, is the
vehicle securely
stopped?Items Check points
Brake pedal •Does the brake
pedal move
smoothly?
•Does the brake
pedal have appro-
priate clearance
from the floor?
•Does the brake
pedal have the cor-
rect amount of free
play?
Brakes • The vehicle should
not pull to one side
when the brakes are
applied.
•The brakes should
work effectively.
• The brake pedal
should not feel
spongy.
• The brake pedal
should not get too
close to the floor
when the brakes are
applied.
Head restraints •Do the head
restraints move
smoothly and lock
securely?
Indicators/buzz-
ers •Do the indicators
and buzzers function
properly?
Lights • Do all the lights
come on?Items Check points

409
LS500_OM_OM50F54U_(U) 7 7
When trouble arises When trouble arises .
7-1. Essential information
Emergency flashers................... 410
If your vehicle has to be stopped in
an emergency ........................... 410
7-2. Steps to take in an emergency
If your vehicle needs to be towed
......................................................... 412
If you think something is wrong
......................................................... 416
Fuel pump shut off system ...... 417
If a warning light turns on or a
warning buzzer sounds ........ 418
If a warning message is displayed
........................................................ 428
If you have a flat tire.................. 432
If the engine wi ll not start ....... 433
If you lose your keys ................. 435
If the fuel filler door cannot be
opened........................................ 435
If the electronic key does not
operate properly .................... 436
If the vehicle battery is discharged
........................................................ 438
If your vehicle overheats ........ 443
If the vehicle becomes stuck
........................................................ 446

418 7-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) ■
Brake system warning light (warning buzzer)
■
Brake system warning light (warning buzzer)
■
High coolant temperature warning light *
(warning buzzer)*
: This light illuminates on the multi-information display.If a warning light turns on or a warning buzzer soundsCalmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu t then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Actions to the warning lights or warning buzzers Warning light Details/Actions(U.S.A.)
or (red)
(Canada) Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and contact your Lexus
dealer. Continuing to drive the vehicle may be dangerous.
Indicates that the brake pads are worn out (only the right-side pads can
be detected)
→ Have the vehicle inspected by your Lexus dealer.
Warning light Details/Actions
(yellow)
Indicates a malfunction in:
 The electronically controlled br ake system (if equipped); or
 The parking brake system
→ Have the vehicle inspected by your Lexus dealer immediately.
Warning light Details/Actions
Indicates that the engine coolant temperature is too high
→ Immediately stop the vehicle in a safe place.
Handling method ( → P.443)

4197-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) 7
When trouble arises ■
Charging system warning light *
(warning buzzer)*
: This light illuminates on the multi-information display. ■
Low engine oil pressure warning light *
(warning buzzer)*
: This light illuminates on the multi-information display. ■
Malfunction indicator lamp (warning buzzer)
■
SRS warning light (warning buzzer) Warning light Details/Actions
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning light Details/Actions
Indicates that the engine oil pressure is too low
→ Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning light Details/Actions
(U.S.A.)
or
(Canada) Indicates a malfunction in:
 The electronic engine control system;
 The electronic throttle control system; or
 The electronic automatic transmission control system
→ Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning light Details/Actions
Indicates a malfunction in:
 The SRS airbag system;
 The front passenger occupant classification system; or
 The seat belt pr etensioner system
→ Have the vehicle inspected by your Lexus dealer immediately.

420 7-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) ■
Pop Up Hood warning light (warning buzzer)
■
ABS warning light (warning buzzer)
■
Brake Override System warning light/Drive-Start Control warning light *

(warning buzzer)
*
: This light illuminates on the multi-information display. Warning light Details/Actions
Indicates that the Pop Up Hood system has operated
→ The Pop Up Hood system cannot be reused once it has operated.
Have it replaced by your Lexus dealer.
Indicates a malfunction in the Pop Up Hood system
→ Have the vehicle inspected by your Lexus dealer immediately.
Warning light Details/Actions(U.S.A.)
or (Canada) Indicates a malfunction in:
 The ABS; or
 The brake assist system
→ Have the vehicle inspected by your Lexus dealer immediately.
Warning light Details/Actions
When a buzzer sounds:
 Brake Override System is malfunctioning;
 Drive-Start Control is operating;
 Drive-Start Control is malfunctioning; or
 Parking Support Brake function (for static objects) is operating
→ Follow the instructions displayed on the multi-information display.
When a buzzer does not sound:
Brake Override System is operating
→ Release the accelerator pedal and depress the brake pedal.

4217-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) 7
When trouble arises ■
Electric power steering system warning light (warning buzzer)
■
Low fuel level warning light
■
Driver’s and front passenger’s seat belt reminder light (warning buzzer) *
*
: Driver’s seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to al ert the driver that his or her seat belt is not
fastened. Once the engine switch is turned to IGNITION ON mode, the buzzer sounds for
6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If
the seat belt is still unfastened after 24 seconds, the buzzer will sound intermittently for 6
seconds. Then, if the seat belt is still unfastened, th e buzzer will sound in a different tone for
90 more seconds.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that his
or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed of 12
mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the buzzer will sound
intermittently for 6 seconds. Th en, if the seat belt is still un fastened, the buzzer will sound in
a different tone for 90 more seconds. Warning light Details/Actions(red)
or (yellow)
Indicates a malfunction in the EPS (Electric Power Steering) system
→ Have the vehicle inspected by your Lexus dealer immediately.
Warning light Details/Actions
Indicates that remaining fuel is approximately 3.4 gal. (13 L, 2.8 Imp.
gal.) or less
→ Refuel the vehicle.
Warning light Details/Actions
Warns the driver and/or front pass enger to fasten their seat belts
→ Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s seat
belt also needs to be fastened to make the warning light (warning
buzzer) turn off.

422 7-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) ■
Rear passengers’ seat belt reminder lights *1
(warning buzzer) *2
*1
: This light illuminates on the center panel. *2
: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt warning buzzer sounds to alert the rear passengers that his
or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed of 12
mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the buzzer will sound
intermittently for 6 seconds. Th en, if the seat belt is still un fastened, the buzzer will sound in
a different tone for 30 more seconds. ■
Tire pressure warning light
■
LTA indicator/LKA indicator (warning buzzer) Warning light Details/Actions
Warns the rear passengers to fasten their seat belts
→ Fasten the seat belt.
Warning light Details/Actions
When the light comes on after blinking for approximately 1 minute:
Malfunction in the tire pressure warning system
→ Have the system checked by your Lexus dealer.
When the light comes on:
Low tire inflation pressure such as
 Natural causes
 Flat tire
→ Immediately stop the vehicle in a safe place.
Handling method ( → P.426)
Warning light Details/Actions
(orange) Indicates a malfunction in the LTA (Lane Tracing Assist) or LKA
(Lane-Keeping Assist)
→ Follow the instructions displayed on the multi-information display.
( → P.229, 237)