engine lexus LC500C 2021 Owner's Manual / LEXUS 2021 LC500 CONVERTIBLE OWNER'S MANUAL (OM11498U)

3137-2. Steps to take in an emergency
7
When trouble arises
Vehicle pulls heavily to one side
when driving on a level road
 Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor
Follow the procedure below to restart
the engine after the system is activated.
1
Turn the engine switch to ACC or
turn it off.
2
Restart the engine.
Fuel pump shut off system
To minimize the risk of fuel leakage
when the engine stalls or when an
airbag inflates upon collision, the
fuel pump shut off system stops the
supply of fuel to the engine.
Restarting the engine
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the
ground, the fuel system has been dam-
aged and is in need of repair. Do not
restart the engine.

3147-2. Steps to take in an emergency
■Brake system warning light (warning buzzer)
■Charging system warning light*
*: This light illuminates on the multi-information display.
■Low engine oil pressure 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.)
(red)
(Canada)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
This light also comes on when the pa rking brake is not released. If the
light turns off after the parking brake is fully released the system is oper-
ating normally.
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to driv e 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
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 engine oil pressure is too low
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer.

3157-2. Steps to take in an emergency
7
When trouble arises
■Malfunction indicator lamp (warning buzzer)
■SRS warning light
■ABS warning light (warning buzzer)
■Electric power steering system warning light (warning buzzer)
Warning lightDetails/Actions
(U.S.A.)
(Canada)
Indicates a malfunction in:
 The electronic engine control system;
 The electronic throttle control system; or
 The electronic automatic transmission control system
 Have the vehicle inspected by your Lexus dealer immediately.
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
(U.S.A.)
(Canada)
Indicates a malfunction in:
 The ABS; or
 The brake assist system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
(red)
or
(yellow)Indicates a malfunction in the EPS (Electric Power Steering) system
 Have the vehicle inspected by your Lexus dealer immediately.

3187-2. Steps to take in an emergency
■Brake system warning light
■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 alert the driver that his or her seat belt is
not fastened. Once the engine switch is turned to ON, the buzzer sounds. If the seat belt is
still unfastened, the buzzer sounds intermittently for a ce rtain period of time after the vehi-
cle reaches a certain speed.
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. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time af ter the vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights (warning buzzer*1)*2
*1: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his
or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
Warning lightDetails/Actions
(yellow)
Indicates a malfunction in:
The electronically controlled brake system
 The parking brake system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
Indicates that remaining fuel is approximately 3.3 gal. [12.6 L, 2.8
Imp.gal.] or less
 Refuel the vehicle.
Warning lightDetails/Actions
Warns the driver and/or front passe nger 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.
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

3197-2. Steps to take in an emergency
7
When trouble arises
tently for a certain period of time, after the seat belt is fastened and unfastened and the
vehicle reaches a certain speed.
*2: This light illuminates on the center panel.
■Master warning light (warning buzzer)
■Tire pressure warning light
■High coolant temperature warning light (warning buzzer)*
*: This light illuminates on the multi-information display.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (door), side impact sensors (front), driver’s seat position sensor, driver’s seat
belt buckle switch, front passenger occupant classification sy stem (ECU and sensors), “AIR
BAG ON” indicator light, “AIR BAG OFF” indicator light, front passenger’s seat belt
buckle switch, seat belt preten sioners, airbags, interconnecting wiring and power sources.
(  P.30)
Warning lightDetails/Actions
A buzzer sounds and the warning ligh t comes on and flashes to indicate
that the master warning system has detected a malfunction.
 P.323
Warning lightDetails/Actions
When the light comes on:
Low tire inflation pressure such as
Natural causes ( P.320)
 Flat tire ( P.327)
 Adjust the tire inflation pressure to the specified level.
The light will turn off after a few mi nutes. In case the light does not
turn off even if the tire inflation pressure is adjusted, have the sys-
tem checked by your Lexus dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
 Have the system checked by your Lexus dealer.
Warning lightDetails/Actions
Changes from a flashing to a solid light when the engine coolant tem-
perature increases
Immediately stop the vehicle in a safe place.
Handling method. ( P.345)

3207-2. Steps to take in an emergency
■Front passenger detection sensor, seat belt reminder and warning buzzer
If luggage is placed on the front passenger seat, the front passenger detection sensor may
cause the warning light to flash and the warning buzzer to sound even if a passenger is not
sitting in the seat.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off af ter several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon as pos-
sible.
■Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily drops, the electric
power steering system warning light may come on and the warning buzzer may sound.
■Tire pressure warning light
When a malfunction occurs in the tire pressu re warning system, the tire pressure warning
light blinks to warn the driver . However, if the warning light blinks for 1 minute, and then
remains illuminated, making it difficult to determine whether the warning light was blinking
initially, turn the engine switch from off to ON and check if the warning light blinks.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire pres-
sure warning reset switch will not turn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warnin g light may come on due to natural causes such as natural air leaks
and tire inflation pressure chan ges caused by temperature. In this case, adjusting the tire
inflation pressure will turn off the warning light (after a few minutes).
■Conditions that the tire pressure wa rning system may not function properly
 P.283
■If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning lig ht frequently comes on after blinking for 1 minute when the
engine switch is turned to ON, have it checked by your Lexus dealer.
■Warning buzzer
In some cases, the buzzer may not be heard du e to being in a noisy location or audio sound.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features:  P.367)

3257-2. Steps to take in an emergency
7
When trouble arises
●Malfunction in the EPS (Electric Power Steering) system
The electric power steering sy stem warning light comes on. ( P.315)
●Malfunction in the tire pressure warning system
The tire pressure warn ing light comes on. (P.319)
●Remaining fuel level is low
The low fuel level warning light comes on. ( P.318)
■If “Shift to P Before Ex iting Vehicle” is shown
The driver’s door is opened without turning the en gine switch to off with the shift lever in any
position other than P. Shif t the shift position to P.
■If “Shift Is in N Release Accelerator Before Shifting” is shown
The accelerator pedal has been depressed when th e shift position is in N. Release the accel-
erator pedal and shift the shift position to D or R.
■If “Shift system malfunction Driving unavailable” is shown
There is a malfunction in the shift control system. Have the vehicle inspected by your Lexus
dealer immediately.
■If “Auto Power Off to Conserve Battery” is shown
Power was turned off due to the automatic power off function. Next time when starting the
engine, increase the engine speed slightly an d maintain that level for approximately 5 min-
utes to recharge the battery.
■If a message that indicates the need for the shift lever operation is shown
To prevent the shift lever from being operated incorrectly or the vehicle from moving unex-
pectedly, a message that requires shifting the shift lever may be shown on the multi-informa-
tion display. In that case, follow the instruction of the me ssage and shift the shift lever.
■If a message that indicates the malfunction of front camera is displayed
The following systems may be suspended un til the problem shown in the message is
resolved. ( P.177, 314)
●PCS (Pre-Collision System)
●LKA (Lane-Keeping Assist)
●Automatic High Beam
●Dynamic radar cruise control with full-speed range
■If “Engine Stopped Steeri ng Power Low” is shown
The steering wheel may become extremely heavy. If the steering wheel becomes heavier
than usual when operating, hold firmly and operate using more force than usual.
■If “Maintenance Required Soon” is shown
Indicates that all maintenance according to th e driven distance on the maintenance sched-
ule
* should be performed soon. The message is shown approximately 4500 miles (7200
km) after the message has been reset. If necessary, perform maintenance.
*: Refer to the separate “Scheduled Maintena nce” or “Owner’s Manual Supplement” for
the maintenance interval a pplicable to your vehicle.
■If “Engine Oil Level Low Add or Replace” is shown
The engine oil level is low. Chec k the level of engine oil, and add if necessary. This message

3267-2. Steps to take in an emergency
may appear if the vehicle is stopped on a slope. Move the vehicle to a level surface and
check to see if the message disappears.
■If a message that indicates the need for referring to Owner’s Manual is shown
●If any of the following messages is shown on the multi-information display, follow the
instructions.
• “Engine Coolant Temp High” ( P.345)
• “Battery low” ( P.332)
• “Transmission Fluid Temp High” ( P.150)
●If any of the following messages is shown on the multi-information di splay, it may indicate
a malfunction. Have the vehicle inspected by your Lexus dealer immediately.
• “Access System with Elec. Key Malfunction”
• “Shift system malfunction”
• “P switch malfunction”
• “Shift system unavailable”
●If any of the following messages is shown on the multi-information di splay, it may indicate
a malfunction. Immediately stop the vehicle and contact your Lexus dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
●If “Battery low” is shown, the battery charge is insufficient . Recharge or replace the bat-
tery.
■If a message that indicates the need for visiting your Lexus dealer is shown
The system or part shown on the multi-information display is malfunctioning. Have the vehi-
cle inspected by your Lexus dealer immediately.
■Warning buzzer
In some cases, the buzzer may not be heard du e to being in a noisy location or audio sound.
NOTICE
■While the engine oil level warning message is displayed
Continued engine operation with low engine oil will damage the engine.
■If “High Power Consumption Partial Limit On AC/Heater Operation” is shown fre-
quently
Air conditioning, heater and other operations are temporarily limited due to high power
consumption. Turn off unnecessary electronic equipment to reduce power consumption,
and wait until the power supply returns to normal. If this message is frequently displayed,
have the vehicle inspected at your Lexus dealer.

3287-2. Steps to take in an emergency
One of the following may be the cause
of the problem:
The electronic key may not be func-
tioning properly. ( P.331)
 There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle. ( P.171)
 The engine may be flooded.
Try to restart the engine again fol-
lowing correct starting procedures.
( P.146)
 There may be a malfunction in the
engine immobilizer system.
( P.63)
 There may be a malfunction in the
shift control system.
* ( P.149)
 There may be a malfunction in the
steering lock system.
*: It may not be possible to shift the shift
position other than P.
One of the following may be the cause
of the problem:
 The battery may be discharged.
( P.332)
 The battery terminal connections
may be loose or corroded.
( P.280)
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.
One of the following may be the cause
of the problem:
 One or both of the battery terminals
may be disconnected. ( P.280)
 The battery may be discharged.
( P.332)
 There may be a malfunction in the
steering lock system.
Contact your Lexus dealer if the problem
If the engine will not start
If the engine will not start even
though correct starting procedures
are being followed ( P.146), 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.
The starter motor does not turn
over
The starter motor does not turn
over, the interior lights and
headlights do not turn on, or the
horn does not sound.

3297-2. Steps to take in an emergency
7
When trouble arises
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:
1
Press the parking brake switch to
check that the parking brake is set.
(P.157)
Parking brake indicator will come on.
2Turn the engine switch to ACC.
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.
Starting the engine in an emer-
gency
If you lose your keys
New genuine mechanical keys can
be made by your Lexus dealer using
another mechanical key and the
key number stamped on your key
number plate. Keep the plate in a
safe place such as your wallet, not in
the vehicle.
NOTICE
■When an electronic key is lost
If the electronic key remains lost, the risk
of vehicle theft increases significantly.
Visit your Lexus deal er immediately with
all remaining electronic keys and the
card key that were provided with your
vehicle.