warning LEXUS LS500H 2019 Owners Manual

4106-3. Do-it-yourself maintenance
LS500h_OM_(U)_1809
1Take out the mechanical key.
2 Remove the cover.
To prevent damage to the key, cover the tip
of the flathead screwdriver with a tape.
3Remove the depleted battery.
Insert a new battery with the “+” terminal
facing up.
Replacing the batteryWARNING
■Removed battery and other parts
These parts are small and if swallowed by
a child, they can cau se choking. Keep
away from children. Failure to do so
could result in death or serious injury.
NOTICE
■When replacing the battery
Use a flathead screwdriver of appropri-
ate size. Applying excessive force may
deform or damage the cover.
■For normal operation after replacing
the battery
Observe the following precautions to
prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to
rust.
●Do not touch or move any other com-
ponent inside the remote control.
●Do not bend either of the battery ter-
minals.

4136-3. Do-it-yourself maintenance
LS500h_OM_(U)_1809
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.

415
LS500h_OM_(U)_1809
7
7
When trouble arises
When trouble arises
.7-1. Essential informationEmergency flashers................... 416
If your vehicle has to be stopped in an emergency ........................... 416
If the vehicle is trapped in rising water............................................. 417
7-2. Steps to take in an emergency If your vehicle needs to be towed......................................................... 419
If you think something is wrong ........................................................ 423
If a warning light turns on or a warning buzzer sounds ....... 424
If a warning message is displayed ........................................................ 434
If you have a flat tire.................. 439
If the hybrid system will not start ........................................................ 440
If you lose your keys ................. 442
If the fuel filler door cannot be opened........................................ 442
If the electronic key does not operate properly .................... 443
If the 12-volt battery is discharged ........................................................ 445
If your vehicle overheats ........ 450
If the vehicle becomes stuck ........................................................ 454

4177-1. Essential information
LS500h_OM_(U)_1809
7
When trouble arises
press it briefly 3 times or more in
succession.
5 Stop the vehicle in a safe place by
the road. 
Remove the seat belt first.
 If the door can be opened, open the
door and exit the vehicle.
 If the door can not be opened, open
the window using the power window
switch and exit the vehicle through
the window.
 If the window can not be opened
using the power window switch,
remain calm, wait until the water
level inside the vehicle rises to the
point that the water pressure inside
of the vehicle equals the water pres-
sure outside of the vehicle, and then
open the door and exit the vehicle.
WARNING
■If the hybrid system has to be turned
off while driving
Power assist for the steering wheel will
be lost, making th e steering wheel
heavier to turn. Decelerate as much as
possible before turning off the hybrid sys-
tem.
If the vehicle is trapped in
rising water
In the event the vehicle is sub-
merged in water, remain calm and
perform the following.

4187-1. Essential information
LS500h_OM_(U)_1809
WARNING
■Using an emergency hammer* for
emergency escape
The rear window of this vehicle can be
shattered by an emergency hammer
*
used for emergency escape, however,
since the windshield, front side windows
and rear side windows are laminated
glass they can not be shatteredby an
emergency hammer
*.
*: Contact your Lexus dealer or after-
market accessory manufacturerfor
further information about an emer-
gency hammer.
■Escaping the vehicle from the window
There are cases where escaping the
vehicle from the window is not possible
due to seating position, passenger body
type, etc.
When using an emergency hammer,
consider your seat location and the size
of the window opening to ensure that the
opening is accessible and large enough
to escape.

4197-2. Steps to take in an emergency
LS500h_OM_(U)_1809
7
When trouble arises
7-2.Steps to take in an emergency
If your vehicle needs to be
towed
If towing is ne cessary, we recom-
mend having your vehicle towed by
your Lexus dealer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.
Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.
WARNING
Observe the following precautions.
Failure to do so may result in death or
serious injury.
■When towing the vehicle
2WD models
Be sure to transport the vehicle with all
four wheels raised off the ground. If the
vehicle is towed with the tires contacting
the ground, the drivetrain and related
parts may be damaged, an accident may
occur due to a change in direction of the
vehicle or electricity generated by the
operation of the motor may cause a fire
to occur depending on the nature of the
damage or malfunction.
AWD models
Be sure to transport the vehicle with all
four wheels raised off the ground. If the
vehicle is towed with the tires contacting
the ground, the driv etrain or related
parts may be damaged, the vehicle may
fly off the truck, or electricity generated
by the operation of the motor may cause
a fire to occur depending on the nature
of the damage or malfunction.
■While towing
●When towing using cables or chains,
avoid sudden starts, etc. which place
excessive stress on the towing eyelets,
cables or chains. The towing eyelets,
cables or chains may become dam-
aged, broken debris may hit people,
and cause serious damage.
●Make sure to disable all functions of
the vehicle height control of the elec-
tronically modulated air suspension.
Otherwise, the vehicle height may
change and part of your body may be
caught under the vehicle, possibly
causing injury. ( P.301)
●Do not turn the power switch off.
This may lead to an accident as the
rear wheels will be locked by the park-
ing lock.
Also, there is a possibility that the
steering wheel is locked and cannot be
operated.

4207-2. Steps to take in an emergency
LS500h_OM_(U)_1809
In the following situations, it is not pos-
sible to be towed by another vehicle
using cables or chains, as the rear
wheels may be locked due to the park-
ing lock. Contact your Lexus dealer or
commercial towing service.
There is a malfunction in the shift control system. (
P.173, 434)
 There is a malfunction in the immo-
bilizer system. ( P.71)
 There is a malfunction in the smart
access system with push-button
start. ( P.443)
 The 12-volt battery is discharged.
( P.445)
The following may indicate a problem
with your transmission. Contact your
Lexus dealer or commercial towing
service before towing.
 The hybrid system warning message
is shown on the multi-information
display and the vehicle does not
move.
 The vehicle makes an abnormal
sound.
Do not tow with a sling-type truck to
prevent body damage.
WARNING
■Installing towing eyelets to the vehi-
cle
Make sure that towing eyelets are
installed securely.
If not securely installed, towing eyelets
may come loose during towing.
NOTICE
■To prevent damage to the vehicle
when towing using a wheel-lift type
truck
●Do not tow the vehicle from the rear
when the power switch is off. The
steering lock mechanism is not strong
enough to hold the front wheels
straight.
●When raising the vehicle, ensure ade-
quate ground clearance for towing at
the opposite end of the raised vehicle.
Without adequate clearance, the vehi-
cle could be damaged while being
towed.
■To prevent damage to the vehicle
when towing with a sling-type truck
Do not tow with a sling-type truck, either
from the front or rear.
■To prevent damage to the vehicle
during emergency towing
Do not secure cables or chains to the
suspension components.
Situations when it is not possible
to be towed by another vehicle
Situations when it is necessary to
contact dealers before towing
Towing with a sling-type truck

4247-2. Steps to take in an emergency
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■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 sounds
Calmly 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 lightDetails/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 lightDetails/Actions
(yellow)
Indicates a malfunction in:
The regenerative braking system;
 The electronically controlled brake system; or
 The parking brake system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is too high
Immediately stop the vehicle in a safe place.
Handling method ( P.450)

4257-2. Steps to take in an emergency
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7
When trouble arises
■Hybrid system overheat warning light*(warning buzzer)
*: This light illuminates on the multi-information display.
■Charging system warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Low traction battery 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.
Warning lightDetails/Actions
Indicates the hybrid system has overheated
 Stop the vehicle in a safe place.
Handling method ( P.451)
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning lightDetails/Actions
Indicates that the charge of the hy brid battery (traction battery) has
become low due to the shift position being left in N for a long time
 As the hybrid battery (traction ba ttery) cannot be charged with the
N shift position selected, when stopping the vehicle for a long
period of time, shift the shift position to P.
 If the “READY” indicator is not illumi nated, shift the shift position to
P and restart the hybrid system.
Warning lightDetails/Actions
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place and contact your Lexus
dealer.

4267-2. Steps to take in an emergency
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■Malfunction indicator lamp (warning buzzer)
■SRS warning light (warning buzzer)
■Pop Up Hood warning light (warning buzzer)
■ABS warning light (warning buzzer)
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
The hybrid system;
 The electronic engine control system;
 The electronic throttle control system; or
 The electronic hybrid transmission control system
 Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning lightDetails/Actions
Indicates a malfunction in:
 The SRS airbag system;
 The front passenger occupant classification system; or
 The seat belt pretensioner system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/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 lightDetails/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.