2021 Lexus LC500C check engine

3387-2. Steps to take in an emergency
Two or more people are needed for
this procedure and some steps
requires a large force.
 There is a possibility to damage the
vehicle when applying a strong
force or removing the parts. Lexus
recommends contact ing your Lexus
dealer.
WARNING
■When exchanging the battery
After exchanging, securely attach the
exhaust hose and exhaust hole plug to
the exhaust hole of the exchanged bat-
tery. If not properly installed, gases
(hydrogen) may leak into the vehicle
interior, and there is the possible danger
of the gas igniting and exploding.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fan or engine drive
belt.
■To prevent damaging the vehicle
The exclusive jump starting terminal is to
be used when charging the battery from
another vehicle in an emergency. It can-
not be used to jump start another vehicle.
If the soft top roof cannot be
c
losed
If the soft top roof cannot be closed
even though the roof switch is oper-
ated, check that all the operational
conditions are met. ( P.127)
If all the operational conditions are
met and the soft top roof cannot be
closed, there may be a malfunction.
Immediately have the vehicle
inspected by your Lexus dealer.
When “Opening Function Unavail-
able System Overheated” or
“Function Temporarily Unavailable
System Overheated” is displayed
on the multi-information display, do
not close the soft top roof manually.
If the soft top roof is closed manu-
ally, the roof switch may not prop-
erly operates next time.
In this case, the soft top roof can be
closed by the following procedure
as an emergency measure, how-
ever, Lexus does not recommend it
as this procedure requires special-
ized knowledge.
Before closing the soft top roof

3447-2. Steps to take in an emergency
17Push the tool backward to a slant-
ing side at the rear of the vehicle
until it no longer moves.
A large force is required to move the tool.
The tool will move from the position to
the position in the illustration.
18Turn the engine switch to ON and
check that “Soft Top Operation
Not Completed” is not displayed
on the multi-information display.
If the message is displayed, check the steps
6
, 11 and 17 have been completed.
19Reinsert the parts that were
removed in the steps 2
, 9 and 15.
The parts removed in the step 2 cannot be
used again and must be replaced at your
Lexus dealer.
■Parts removed during the manual clos-
ing procedure
Keep any parts removed during the proce-
dure inside the vehicle and take all removed
parts and the vehicle to your Lexus dealer.
A
B
WARNING
■When manually closing the soft top
roof
Observe the following precautions:
●Stop the vehicle on a flat surface in a
safe place.
●Set the parking brake and shift the shift
position to P.
●Ensure that there are no occupants
inside the vehicle.
●Do not perform this procedure while
there are strong winds blowing.
●Turn the engine switch off.
●Be careful not to catch any part of your
body or clothing in the moving parts.
●Some parts of this procedure may
result in an injury if performed with
bare hands. Protect your hands with
gloves or a piece of cloth when per-
forming the procedure.

3457-2. Steps to take in an emergency
7
When trouble arises
1Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the engine has cooled down
sufficiently, inspect the hoses and
radiator core (radiator) for any
leaks. Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4
The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
6Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
The engine coolant temperature
gauge ( P.75) is in the red zone
or a loss of engine power is expe-
rienced. (For example, the vehicle
speed does not increase.)
 “Engine Coolant Temp High” is
shown on the multi-information
display.
 Steam comes out from under the
hood.
Correction procedures
A
B
A
B
C
D

3467-2. Steps to take in an emergency
system is turned on immediately after a
cold start. Confirm that the fan is operating
by checking the fan sound and air flow. If it
is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not operate in freezing tem-
peratures.)
7If the fan is not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
■When adding coolant
Add coolant in accordance with the follow-
ing procedure.
1
Remove the service cover.
2
Remove the engine cover.
3
Remove the caps and .
4
Add coolant through the inlet of the cap
up to the “F” line , and then
replace the cap .
5
Add coolant through the inlet of the cap
until it is full, and then replace the
cap .
AB
AC
A
B
B
WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.
●Keep hands and clothing (especially a
tie, a scarf or a muffler) away from the
fan and belts. Failure to do so may
cause the hands or clothing to be
caught, resulting in serious injury.
●While the engine and radiator are hot,
do not loosen or remove the coolant
inlet cap or coolant reservoir cap.
High temperature steam or coolant
could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has
cooled down sufficiently. Adding cool
coolant to a hot engine too quickly can
cause damage to the engine.

3518-1. Specifications
8
Vehicle specifications
This number is also on the Certification
Label.■Engine number
The engine number is located as
shown.
■Oil capacity (Drain and refill [Ref-
erence
*])
*: The engine oil capacity is a reference quantity to be used when changing the engine oil. Warm up
and turn off the
engine, wait more than 5 minutes, and
check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor
Engine
Model5.0 L 8-cylinder (2UR-GSE) engine
Type8-cylinder V type, 4-cycle, gasoline
Bore and stroke3.70  3.52 in. (94.0  89.5 mm)
Displacement303.2 cu.in. (4969 cm3)
Drive belt tensionAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating91 (Research Octane Number 96) or higher
Fuel tank capacity (Refer-
ence)21.7 gal. (82.0 L, 18.0 Imp.gal.)
Lubrication system
With filter9.1 qt. (8.6 L, 7.6 Imp.qt.)
Without filter8.4 qt. (7.9 L, 7.0 Imp.qt.)

3548-1. Specifications
*: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory.
Use Lexus approved “Toyota Genu ine Differential Gear Oil” or an equivalent of match-
ing quality to satisfy the above specification. Please contact your Lexus dealer for further
details.
*1: Minimum pedal clearance when depressed with a force of 112.4 lbf (500 N, 51.0 kgf)
while the engine is running.
When performing the brake pedal inspection, also be sure to check that the brake sys-
tem warning light is not illuminated when th e engine is running. (If the brake system
warning light is illuminated, refer to P.314.)
*2: Make sure to confirm that the brake system wa rning light (yellow) does not illuminate. (If
the brake system warning light illuminates, refer to P.318.)
Differential
Oil capacity0.90 qt. (0.85 L, 0.75 Imp.qt.)
Oil type and viscosity
Without LSD (Limited Slip Differential)
Toyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent
*

With LSD (Limited Slip Differential)
Toyota Genuine Differential gear oil LX
75W-85 GL-5 or equivalent
*
Brakes
Pedal clearance*15.2 in. (132 mm) Min.
Pedal free play0.04  0.24 in. (1.0  6.0 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Parking brake indicator*2
When pushing the parking brake switch for
1 to 4 seconds: comes on
When pulling the parking brake switch for 1
to 4 seconds: turns off
Fluid typeSAE J1703 or FMVSS No.116 DOT 3, SAE
J1704 or FMVSS No. 116 DOT 4

392What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.329)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.329)
 Is the electronic key battery weak or
depleted? ( P.297)
 Is the engine switch in ON?
When locking the doors, turn the engine
switch off. ( P.149)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio
wave. ( P.105) 
The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. ( P.102)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.146)
 Is the shift position in P? ( P.150)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.104)
 Is the steering wheel unlocked?
( P.146)
 Is the electronic key battery weak or
depleted?
In this case, the engine can be started in a
temporary way. ( P.331)
 Is the battery discharged?
( P.332)
 It is locked automatically to prevent
theft of the vehicle. ( P.146)
If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The doors cannot be locked or
unlocked
The trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does not start
The steering wheel cannot be
turned after the engine is
stopped

393What to do if... (Troubleshooting)
Is the window lock switch pressed?
The windows other than the side window at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.125)
 The auto power off function will be
operated if the vehicle is left in ACC
or ON (the engine is not running)
for a period of time. ( P.149)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.318)
 The parking brake indicator is on
Is the parking brake released? ( P.157)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.314, 323)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
(  P.65)
To stop the alarm, turn the engine switch to ON, or start the engine.

Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.323)
 When a warning light turns on or a
warning message is displayed, refer
to P.314, 323.
 Slow down the vehicle, drive with
extra caution, and take your vehicle
to the nearest Lexus dealer or
authorized tire dealer as soon as
possible to have the tire replaced.
( P.327)
 Try the procedure for when the
vehicle becomes stuck in mud, dirt,
or snow. ( P.347)
The side windows or rear quar-
ter windows do not open or close
by operating the power window
switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck