2018 LEXUS LS500 light

3956-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care codes. If the system is initialized before
registering the ID co des, the initialized
values will be invalid.●
As the tires will be warm when registra-
tion is completed, ma ke sure to allow the
tires to cool before performing initializa-
tion.■
Canceling ID code registration●
To cancel ID code registration after it has
been started, turn th e engine switch off
before driving the vehicle.
If the vehicle is driven after ID code regis-
tration is started, to cancel registration,
perform the ID code registration start
procedure again and turn the engine
switch off before driving.●
If ID code registration has been canceled,
the tire pressure warning light will blink
for approximately 1 minute when the
engine switch is turned to IGNITION
ON mode and then illuminate. The tire
pressure warning system will be opera-
tional when the tire pressure warning
light turns off.●
If the warning light does not turn off even
after several minutes have elapsed, ID
code registration may not have been can-
celled correctly. To ca ncel registration,
perform the ID code registration start
procedure again and th en turn the engine
switch off before driving.■
If ID codes are not registered properly●
In the following situat ions, ID code regis-
tration may take longer than usual to be
completed or may not be possible. (Usu-
ally, the vehicle will need to be driven for
approximately 10 to 30 minutes to com-
plete ID code registration.)
If ID code registration is not complete
after driving for approximately 30 min-
utes, continue driving for a while.
• If the vehicle is driven on an unpaved
road, it may take longer than normal to
complete registration.
• If the vehicle is backed up while perform-
ing registration, data collected during
registration will be cleared, and it will take
longer than normal to complete.
• If the vehicle is driven in heavy traffic or
another situation where other vehicles
are driven close by, it may take time for the system to recognize the tire pressure
warning valve and transmitters of your
vehicle over those of other vehicles.
•If a wheel with a ti re pressure warning
valve and transmitter in stalled is inside or
near the vehicle, registration of the ID
codes for the installed wheels may not be
possible.
If ID registration is not complete after driv-
ing for approximately 1 hour, park the vehi-
cle in a safe place for approximately 20
minutes and then perform the ID code reg-
istration procedure again. ●
In the following situations, ID code regis-
tration will not be started or was not com-
pleted properly and the system will not
operate properly. Pe rform the ID code
registration procedure again.
• If, when attempting to start ID code regis-
tration, the tire pressure warning light
does not blink slowly 3 times.
• If, when the vehicle has been driven for
about 20 minutes after performing ID
code registration, the tire pressure warn-
ing light blinks for approximately 1 minute
and then illuminates. ●
If ID code registration cannot be com-
pleted after performing the above proce-
dure, contact your Lexus dealer.

3976-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care
1 Chock the tires. 2 Slightly loosen the wheel nuts (one
turn).
3 Turn the tire jack portion by
hand until the notch of the jack is in
contact with the jack point. The jack point guides are located under
the rocker panel. They indicate the jack
point positions.
4 Raise the vehicle until the tire is
slightly raised off the ground.
5 Remove all the wheel nuts and the
tire. When resting the tire on the ground, place
the tire so that the wheel design faces up to WARNING■
Replacing a flat tire for vehicles with
power trunk opener and closer (if
equipped)
In cases such as when replacing tires,
make sure to turn off the trunk opener
main switch ( → P.106). Failure to do so
may cause the trunk lid to operate unin-
tentionally if the power trunk opener and
closer switch is accidentally touched,
resulting in hands and fingers being
caught and injured.
Removing a tire
Tire Wheel chock posi-
tions
Front Left-hand side Behind the rear
right-hand side tire
Right-hand
side Behind the rear
left-hand side tire
Rear Left-hand side In front of the front
right-hand side tire
Right-hand
side In front of the front
left-hand side tire A

4076-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care 
Type D
Normal fuse
Blown fuse ■
After a fuse is replaced●
When installing the lid, make sure that the
tab is installed securely.●
If the lights do not turn on even after the
fuse has been replaced, a bulb may need
replacement.●
If the replaced fuse blows again, have the
vehicle inspected by your Lexus dealer.■
If there is an overload in a circuit
The fuses are designed to blow, protecting
the wiring harness from damage.
WARNING■
To prevent system breakdowns and
vehicle fire
Observe the following precautions.
Failure to do so may cause damage to
the vehicle, and possibly a fire or injury.
●
Never use a fuse of a higher amperage
rating than that indicated, or use any
other object in place of a fuse.
●
Always use a genuine Lexus fuse or
equivalent.
Never replace a fuse with a wire, even
as a temporary fix.
●
Do not modify the fuses or fuse boxes. A
B NOTICE■
Before replacing fuses
Have the cause of electrical overload
determined and repaired by your Lexus
dealer as soon as possible.

408 6-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) ■
LED Lights
The lights consist of a number of LEDs. If
any of the LEDs burn out, take your vehicle
to your Lexus dealer to have the light
replaced. ■
Condensation build-up on the inside of
the lens
Temporary condensation build-up on the
inside of the headlight lens does not indi-
cate a malfunction. Contact your Lexus
dealer for more information in the following
situations: ●
Large drops of water ha ve built up on the
inside of the lens.●
Water has built up inside the headlight.Light bulbs If any lights burn out, have it
replaced by your Lexus dealer.

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

410 7-1. Essential information
LS500_OM_OM50F54U_(U) 7-1.Essential information
Press the switch to flash all of the turn
signal lights. To turn them off, press the switch once
again.
■
Emergency flashers●
If the emergency flashers are used for a
long time while the engine is not running,
the battery may discharge.●
If any of the SRS airbags deploy (inflate)
or in the event of a strong rear impact, the
emergency flashers will turn on automati-
cally.
The emergency flashers will turn off auto-
matically after operating for approxi-
mately 20 minutes. To manually turn the
emergency flashers off, press the switch
twice.
(The emergency flashers may not turn on
automatically depending on the force of
the impact and conditions of the colli-
sion.) 1 Steadily step on the brake pedal
with both feet and firmly depress it. Do not pump the brake pedal repeatedly
as this will increase the effort required to
slow the vehicle.
2 Shift the shift position to N. 
If the shift position is shifted to N
3 After slowing down, stop the vehi-
cle in a safe place by the road.
4 Stop the engine. 
If the shift position cannot be shifted
to N
3 Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.
4 To stop the engine, press and hold
the engine switch for 2 consecutive Emergency flashers The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped on the road due
to a breakdown, etc.
Operating instructions If your vehicle has to be
stopped in an emergency Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:
Stopping the vehicle

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.