warning light LEXUS LS500 2021 Service Manual

1764-2. Driving procedures
TION ON” is not shown on the
meter.
■Automatic engine shut off feature
●The vehicle is equipped with a feature
that automatically shuts off the engine
when the shift position is in P with the
engine running for an extended period.
●The engine will automatically shut off
after approximately 1 hour if it has been
left running while the shift position is in P.
●The timer for the automatic engine shut
off feature will reset if the brake pedal is
depressed or if the shift position is in a
position other than P.
●After the vehicle is parked, if the door is
locked with the door lock switch
(  P.104) from the insi de or the mechani-
cal key from the outside, the automatic
engine shut off feature will be disabled.
The timer for the automatic engine shut
off feature will be re-enabled if the
driver’s door is opened.
■Locking the door from outside with the
engine running
1 With the driver’s door open, pull the
driver’s door handle and insert the
mechanical key.
2 Turn the mechanical key counterclock-
wise. 3
Pull out the mechanical key and close
the door.
■Automatic P position selection function
 P.181
WARNING
■Stopping the engine in an emergency
●If you want to stop the engine in an
emergency while driving the vehicle,
press and hold the engine switch for
more than 2 seconds, or press it briefly
3 times or more in succession.
(
P.418)
However, do not touch the engine
switch while driving except in an emer-
gency. Turning the engine off while
driving will not cause loss of steering
or braking control, however, power
assist to the steering will be lost. This
will make it more difficult to steer
smoothly, so you should pull over and
stop the vehicle as soon as it is safe to
do so.
●If the engine switch is operated while
the vehicle is running, a warning mes-
sage will be shown on the multi-infor-
mation display and a buzzer sounds.
●When restarting the engine after an
emergency shutdown, press the
engine switch.
■When parking
Exhaust gases include harmful carbon
monoxide (CO), which is colorless and
odorless. Observe the following precau-
tions.
Failure to do so may cause exhaust gases
to enter the vehicle and may lead to an
accident caused by light-headedness, or
may lead to death or a serious health
hazard.
●If the vehicle is in a poorly ventilated
area or a closed area, such as a
garage, stop the engine.

1804-2. Driving procedures
Shift lever
Operate the shift lever gently and securely
in the direction of the arrow on the shift
position indicator.
To shift to N, slide the shift lever in the
direction of the arrow and hold it.
Release the shift lever after each shifting
operation to allow it to return to its regular
position ( ).
Shifting to M is only possible when the shift
position is in D.
When shifting from P to N, D or R, from N,
D, M or R to P, from D or M to R, or from R
to D, ensure that the brake pedal is being
depressed and the vehicle is stationary.
Shift position indicator
Meter display:
The current shift position is highlighted.
When any shift position other than D or M
is selected, the arrow toward M and the M
position indicator are displayed in gray. Shift lever display:
The current shift posi
tion is illuminated.
When selecting the sh ift position, make
sure that the shift position has been
changed to the desired position by check-
ing the shift position indicator provided on
the instrument cluster.
P position switch
■When shifting the shift position to P
Fully stop the vehicle and set the park-
ing brake, and then press the P position
switch.
When the shift position is changed to P, the
switch illuminates.
Check that the shift position indicator
shows P.
Shifting the shift lever
A
B
WARNING
■For the shift lever
●Do not remove the shift lever knob or
use anything but a genuine Lexus shift
lever knob. Also, do not hang anything
on the shift lever.
Doing so could prevent the shift lever
from returning to position, causing
unexpected accidents to occur when
the vehicle is in motion.
●In order to prevent the shift position
from accidentally being changed, do
not touch the shift lever when not using
them.
P position switch
C

1874-2. Driving procedures
4
Driving
■Turns automatic mode off
While the vehicle is stopped, pull and
hold the parking brake switch until a
message is shown on the multi-infor-
mation display.
■Parking brake operation
●When the engine swit ch is not in IGNI-
TION ON mode, the parking brake can-
not be released using the parking brake
switch.
●When the engine swit ch is not in IGNI-
TION ON mode, automatic mode (auto-
matic brake setting and releasing) is not
available.
■Parking brake automatic release func-
tion
●When the shift position is shifted from P,
the parking brake will be released in
automatic mode.
●When all of the foll owing conditions are
met in manual mode, the parking brake
can be released by depressing the accel-
erator pedal.
• The driver’s door is closed
• The driver is wearing the seat belt
• The shift position is in D, M or R
■If “EPB Frequently Operated Wait a
Minute” is displayed on the multi-infor-
mation display
If the parking brake is operated repeatedly
over a short period of time, the system may
restrict operation to prevent overheating. If
this happens, refrain from operating the
parking brake. Normal operation will return
after about 1 minute.
■If “EPB Activation Stopped Incom-
pletely” or “EPB Unavailable” is dis-
played on the multi-information display
Operate the parking brake switch. If the
message does not disappear after operat-
ing the switch several times, the system may
be malfunctioning. Have the vehicle
inspected by your Lexus dealer.
■Parking brake operation sound
When the parking brake operates, a motor
sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake operation
●Depending on the engine switch mode,
the parking brake indicator light will turn
on and stay on as described below:
IGNITION ON mode: Comes on until
the parking brake is released.
Not in IGNITION ON mode: Stays on
for approximately 15 seconds.
●When the engine switch is turned off with
the parking brake set, the parking brake
indicator light will stay on for about 15
seconds. This does not indicate a mal-
function.
■When the parking brake switch mal-
functions
Automatic mode (automatic brake setting
and releasing) will be turned on automati-
cally.
■Parking the vehicle
 P.164
■Parking brake engaged warning buzzer
A buzzer will sound if the vehicle is driven
with the parking brake engaged. “EPB
Applied” is displayed on the multi-informa-
tion display. (with the vehicle reached a
speed of 3 mph [5 km/h])
■If the brake system warning light comes
on
 P.427
■Usage in winter time
 P.309

1884-2. Driving procedures
Turns the brake hold system on
The brake hold standby indicator (green) comes on. While the system is holding
the brake, the brake hold operated indica-
tor (yellow) comes on.
■Brake hold system operating conditions
The brake hold system cannot be turned on
in the following conditions:
●The driver’s door is not closed.
●The driver is not wearing the seat belt.
If any of the conditions above are detected
when the brake hold system is enabled, the
system will turn off and the brake hold
standby indicator light will go off. In addi-
tion, if any of the conditions are detected
while the system is holding the brake, a
warning buzzer will sound and a message
will be shown on the multi-information dis-
WARNING
■When parking the vehicle
Do not leave a child in the vehicle alone.
The parking brake may be released unin-
tentionally and there is the danger of the
vehicle moving that may lead to an acci-
dent resulting in death or serious injury.
NOTICE
■When parking the vehicle
Before you leave the vehicle, set the
parking brake, shift the shift position to P
and make sure that the vehicle does not
move.
■When the system malfunctions
Stop the vehicle in a safe place and
check the warning messages.
■When the parking brake cannot be
released due to a malfunction
Driving the vehicle with the parking
brake set will lead to brake components
overheating, which may affect braking
performance and increase brake wear.
Have the vehicle inspected by your
Lexus dealer immediately if this occurs.
Brake Hold
The brake hold system keeps the
brake applied when the shift posi-
tion is in D, M or N with the system
on and the brake pedal has been
depressed to stop the vehicle. The
system releases the brake when the
accelerator pedal is depressed with
the shift position in D or M to allow
smooth start off.
Enabling the system
A
B

1894-2. Driving procedures
4
Driving
play. The parking brake will then be set
automatically.
■Brake hold function
●If the brake pedal is left released for a
period of about 3 minutes after the sys-
tem has started holding the brake, the
parking brake will be set automatically. In
this case, a warning buzzer sounds and a
message is shown on the multi-informa-
tion display.
●To turn the system off while the system is
holding the brake, firmly depress the
brake pedal and press the button again.
●The brake hold function may not hold the
vehicle when the vehicle is on a steep
incline. In this situation, it may be neces-
sary for the driver to apply the brakes. A
warning buzzer will sound and the
multi-information display will inform the
driver of this situation. If a warning mes-
sage is shown on the multi-information
display, read the message and follow the
instructions.
■When the parking brake is set automati-
cally while the system is holding the
brakes
Perform any of the follo wing operations to
release the parking brake.
●Depress the accelerator pedal. (The
parking brake will not be released auto-
matically if the seat belt is not fastened.)
●Operate the parking brake switch with
the brake pedal depressed.
Make sure that the pa rking brake indicator
light goes off. ( P.186)
■When an inspection at your Lexus
dealer is necessary
When the brake hold standby indicator
(green) does not illuminate even when the
brake hold switch is pressed with the brake
hold system operating conditions met, the
system may be malfun ctioning. Have the
vehicle inspected at your Lexus dealer.
■If “Brake Hold Malfunction Press Brake
to Deactivate Visit Your Dealer” or
“Brake Hold Malfunction Visit Your
Dealer” is displayed on the multi-infor-
mation display
The system may be ma lfunctioning. Have
the vehicle inspected by your Lexus dealer.
■Warning messages and buzzers
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution. If a warn-
ing message is shown on the multi-informa-
tion display, read the message and follow
the instructions.
■If the brake hold operated indicator
flashes
 P.433
WARNING
■When the vehicle is on a steep incline
When using the brake hold system on a
steep incline exercise caution. The brake
hold function may not hold the vehicle in
such a situation.
■When stopped on a slippery road
The system cannot stop the vehicle when
the gripping ability of the tires has been
exceeded. Do not use the system when
stopped on a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not designed
for use when parking the vehicle for a
long period of time. Turning the engine
switch off while the system is holding the
brake may release the brake, which
would cause the vehicle to move. When
operating the engine switch, depress the
brake pedal, shift the shift position to P
and set the parking brake.

1934-3. Operating the lights and wipers
4
Driving
1Press the Automatic High Beam
switch.
2 Turn the headlight switch to the
or position.
When the headlight swit ch lever is in the low beam position, the AHB system will be
enabled and the AHB indicator will illumi-
nate.
■Conditions to turn the high beams on/off
automatically
●When all of the follo
wing conditions are
met, the high beams will be turned on
automatically (after approximately 1 sec-
ond):
• The vehicle speed is approximately 21 mph (34 km/h) or more.
• The area ahead of the vehicle is dark.
• There are no vehicles ahead with head-
lights or tail lights turned on.
• There are few streetlights on the road
ahead.
●If any of the following conditions are met,
the high beams will turn off automatically:
• The vehicle speed is below approxi- mately 17 mph (27 km/h).
• The area ahead of the vehicle is not dark.
• Vehicles ahead have their headlights or
tail lights turned on.
• There are many streetlights on the road ahead.
■Camera sensor dete ction information
●The high beams may not be automatically
turned off in the following situations:
• When a vehicle suddenly appears from
around a curve
• When the vehicle is cut in front of by another vehicle
• When vehicles ahead cannot be
detected due to repeated curves, road
dividers or roadside trees
• When vehicles ahead appear in a far-
away lane on a wide road
• When the lights of vehicles ahead are not on
AHB (Automatic High
Beam)
The Automatic High Beam uses a
camera sensor located behind the
upper portion of the windshield to
assess the brightness of the lights of
vehicles ahead, streetlights, etc.,
and automatically turns the high
beams on or off as necessary.
WARNING
■Limitations of the Automatic High
Beam
Do not overly rely on the Automatic High
Beam. Always drive sa fely, taking care to
observe your surroundings and turning
the high beams on or off manually if nec-
essary.
■To prevent incorrect operation of the
Automatic High Beam system
Do not overload the vehicle.
Activating the Automatic High
Beam

1984-3. Operating the lights and wipers
the engine is stopped, the windshield wipers
will operate in high speed operation. After
the vehicle is stopped, operation will return
to normal when the engine switch is turned
to IGNITION ON mode, or operation will
stop when the driver’s door is opened.
■Outside rear view mirror defogger acti-
vation linked to windshield wiper opera-
tion
The outside rear view mirror defoggers
automatically turn on when you operate the
windshield wipers.
The outside rear view mirror defoggers
automatically turn off approximately 15
minutes after the wipers stop.
For details about the outside rear view mir-
ror defoggers:  P.324When the windshield wipers are not
being used, they retract to below the
hood. To enable the windshield wipers
to be lifted when parking in cold condi-
tions or when replacing a windshield
wiper insert, change the rest position of
the windshield wipers to the service
position using the wiper lever.
■Raising the wipers to the service
position
Within approximately 45 seconds of
turning the engine switch off, move the
wiper lever to the (U.S.A.) or
(Canada) position and hold it for
approximately 2 seconds or more.
The wipers will move to the service posi-
tion.
WARNING
■Caution regarding the use of wind-
shield wipers in AUTO mode
The windshield wipers may operate
unexpectedly if the sensor is touched or
the windshield is subject to vibration in
AUTO mode. Take care that your fingers
or anything else do not become caught
in the windshield wipers.
■Caution regarding the use of washer
fluid
When it is cold, do not use the washer
fluid until the windshield becomes warm.
The fluid may freeze on the windshield
and cause low visibility. This may lead to
an accident, resulting in death or serious
injury.
NOTICE
■When there is no washer fluid spray
from the nozzle
Damage to the washer fluid pump may
be caused if the lever is pulled toward
you and held continually.
■When a nozzle becomes blocked
In this case, contact your Lexus dealer.
Do not try to clear it with a pin or other
object. The nozzle will be damaged.
Changing the windshield wiper
rest position/Lifting the wind-
shield wipers

2014-4. Refueling
4
Driving
1Press the opener switch.
2 Turn the fuel tank cap slowly and
remove it, then put it into the holder
on the fuel filler door.
■If the fuel filler door cannot be opened
 P.441
After refueling, turn the fuel tank cap
until you hear a click. Once the cap is
released, it will turn slightly in the oppo-
site direction.
■When “Check Fuel Cap” is displayed on
the multi-information display
The fuel tank cap may be unfastened or
loose. Turn the engine switch off, check the
cap and tighten it securely. If the message
remains, wait a few se conds and then turn
the engine switch off once again.
Opening the fuel tank cap
Closing the fuel tank cap
WARNING
■When replacing the fuel tank cap
Do not use anything but a genuine Lexus
fuel tank cap designed for your vehicle.
Doing so may cause a fire or other inci-
dent which may result in death or serious
injury.

2034-5. Using the driving support systems
4
Driving
WARNING
■To avoid malfunction of the front
radar sensor
Observe the following precautions.
Otherwise, the radar sensor may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.
●Keep the radar sens or and the radar
sensor cover clean at all times.
Radar sensor
Radar sensor cover
If the front of the rada r sensor or the front
or back of the radar sensor cover is dirty
or covered with water droplets, snow,
etc., clean it.
Clean the radar sensor and radar sensor
cover with a soft cloth to avoid damaging
them.
●Do not attach accessories, stickers
(including transpar ent stickers) or
other items to the radar sensor, radar
sensor cover or surrounding area.
A
B
●Do not subject the radar sensor or its
surrounding area to a strong impact.
If the radar sensor is moved even
slightly off position, the system may
malfunction and objects may not be
detected correctly.
If the radar sensor, front grille, or front
bumper has been subjected to a
strong impact, have the vehicle
inspected by your Lexus dealer.
●Do not disassemble the radar sensor.
●Do not modify or paint the radar sen-
sor or radar sensor cover.
●In the following cases, the radar sensor
must be recalibrated. Contact your
Lexus dealer for details.
• When the radar sensor or front grille
are removed and installed, or replaced
• When the front bumper is replaced
■To avoid malfunction of the front side
radar sensors
Observe the following precautions.
Otherwise, the radar sensor may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.

2044-5. Using the driving support systems
WARNING
●Keep the radar sensors and their sur-
rounding areas on the front bumper
clean at all times.
If a radar sensor or its surrounding area
on the front bumper is dirty or covered
with snow, the system may not operate
and a warning message (
P.436) will
be displayed.
If this occurs, clean off the dirt or snow
and drive the vehicle for approximately
10 minutes.
If the warning message does not disap-
pear, have your vehicle inspected by your
Lexus dealer.
●Do not attach accessories, stickers
(including transparen t stickers), alumi-
num tape or other items to the radar
sensors or their surrounding area.
●Do not subject a radar sensor or its
surrounding area on the front bumper
to a strong impact.
If a radar sensor is moved even slightly
off position, the system may malfunction
and vehicles may not be detected cor-
rectly.
In the following situations, have your
vehicle inspected by your Lexus dealer.
• If a radar sensor or its surrounding area is subject to a strong impact
• If the area on the front bumper around a radar sensor is scratched or dented,
or the front bumper has become par-
tially disengaged
●Do not disassemble the radar sensors.
●Do not modify the radar sensors or
their surrounding area on the front
bumper.
●In the following cases, the radar sensor
must be recalibrated. Contact your
Lexus dealer for details.
• When the radar sens or is removed and
installed, or replaced
• When the front bumper is replaced
●Do not paint the front bumper any
color other than an official Lexus color.
■To avoid malfunction of the front cam-
era
Observe the following precautions.
Otherwise, the front camera may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.
●Keep the windshield clean at all times.
• If the windshield is dirty or covered with an oily film, water droplets, snow,
etc., clean the windshield.
• As some glass coating agents may affect the detection performance of
the front camera, consult your Lexus
dealer when using a glass coating
agent.
• If a glass coating agent is applied to the windshield, it will still be necessary to
use the windshield wipers to remove
water droplets, etc. from the area of
the windshield in front of the front
camera.
• If the inner side of the windshield where the front camera is installed is
dirty, contact your Lexus dealer.