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

2696-2. Maintenance
6
Maintenance and care
The OBD system determines that a
problem exists somewhere in the emis-
sion control system. Your vehicle may
not pass the I/M test and may need to
be repaired. Contact your Lexus
dealer to service the vehicle.
When the battery is disconnected
or discharged
Readiness codes that are set during
ordinary driving are erased.
Also, depending on your driving
habits, the readiness codes may not
be completely set.
 When the fuel tank cap is loose
The malfunction indicator lamp
comes on indicating a temporary
malfunction and your vehicle may
not pass the I/M test. The error code in the OBD system will
not be cleared unless the vehicle is
driven 40 or more times.
Contact your Lexus dealer to prepare
the vehicle for re-testing.
Emission inspection and
maintenance (I/M) pro-
grams
Some states have vehicle emission
inspection programs which include
OBD (On Board Diagnostics)
checks. The OBD system monitors
the operation of the emission con-
trol system.
If the malfunction indicator lamp
comes on
Your vehicle may not pass the
I/M test in the following situa-
tions:
When the malfunction indicator
lamp still remains on after sev-
eral driving trips
If your vehicle does not pass the
I/M test

2706-3. Do-it-yourself maintenance
6-3.Do-it-yourself maintenance
Do-it-yourself service pre-
cautions
If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.
Maintenance
ItemsParts and tools
Battery condi-
tion (P.279)
•Grease
• Conventional wrench
(for terminal clamp
bolts)
Brake fluid
level
( P.277)
• SAE J1703 or FMVSS
No.116 DOT 3 brake
fluid
SAE J1704 or FMVSS
No. 116 DOT 4 brake
fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant
level
( P.276)
•“Toyota Super Long
Life Coolant” or a simi-
lar high quality eth-
ylene glycol-based
non-silicate, non-amine,
non-nitrite and non-
borate coolant with
long-life hybrid organic
acid technology
For the U.S.A.:
“Toyota Super Long
Life Coolant” is pre-
mixed with 50% cool-
ant and 50% deionized
water.
For Canada:
“Toyota Super Long
Life Coolant” is pre-
mixed with 55% cool-
ant and 45% deionized
water.
• Funnel (used only for adding coolant)
Engine oil level
( P.274)
•“Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P.299)• Fuse with same amper-
age rating as original
Headlight aim• Phillips-head screw-driver
Light bulbs
( P.303)
Radiator and
condenser
( P.277)

ItemsParts and tools

2716-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation
pressure
( P.293)• Tire pressure gauge
• Compressed air source
Washer fluid
( P.278)
• Water or washer fluid
containing antifreeze
(for winter use)
• Funnel (used only for adding water or washer
fluid)
WARNING
The engine compartment contains many
mechanisms and fluids that may move
suddenly, become hot, or become elec-
trically energized. To avoid death or seri-
ous injury, observe the following
precautions.
■When working on the engine com-
partment
●Keep hands, clothi ng and tools away
from the moving fan and engine drive
belt.
●Be careful not to touch the engine,
radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil
and other fluids may also be hot.
●Do not leave anything that may burn
easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose
an open flame to fuel. Fuel fumes are
flammable.
■When working near the electric cool-
ing fan or radiator grille
Be sure the engine switch is off.
With the engine switch in ON, the elec-
tric cooling fan may automatically start to
run if the air conditioning is on and/or the
coolant temperature is high. ( P.277)
ItemsParts and tools■Safety glasses
Wear safety glasses to prevent flying or
falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter
removed may cause excessive engine
wear due to dirt in the air.

2726-3. Do-it-yourself maintenance
1Pull the hood lock release lever.
The hood will pop up slightly.
2Pull up the auxiliary catch lever and
lift the hood.■Front
Hood
Opening the hood
WARNING
■Pre-driving check
Check that the hood is fully closed and
locked.
If the hood is not locked properly, it may
open while the vehicle is in motion and
cause an accident, which may result in
death or serious injury.
Positioning a floor jack
When using a floor jack, follow the
instructions in the manual provided
with the jack and perform the oper-
ation safely.
When raising your vehicle with a
floor jack, position the jack cor-
rectly. Improper placement may
damage your vehicle or cause
injury.
Location of the jack point

2736-3. Do-it-yourself maintenance
6
Maintenance and care
■Rear

2746-3. Do-it-yourself maintenance
Fuse box (P.299)
Engine oil level dipstick ( P.274)
Engine coolant reservoir ( P.276)
Engine oil filler cap ( P.275)
Brake fluid reservoir ( P.277)
Washer fluid tank ( P.278)
Electric cooling fan
Condenser ( P.277)
Radiator ( P.277)
■Battery
 P.279
With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.
Engine compartment
Components
A
B
C
D
E
F
G
H
I
Checking and adding the engine
oil

2756-3. Do-it-yourself maintenance
6
Maintenance and care
■Checking the engine oil
1 Park the vehicle on level ground.
After warming up the en gine and turning it
off, wait more than 5 minutes for the oil to
drain back into the bottom of the engine.
2 Holding a rag under the end, pull
the dipstick out.
3 Wipe the dipstick clean.
4 Reinsert the dipstick fully.
5 Holding a rag under the end, pull
the dipstick out and check the oil
level.
Low
Normal
Excessive
The shape of the dipstick may differ
depending on the type of vehicle or
engine.
6Wipe the dipstick and reinsert it
fully.
■Checking the oil type and prepar-
ing the items needed
Make sure to check the oil type and
prepare the items needed before add-
ing oil.
 Engine oil selection
P.351
 Oil quantity (Low  Full)
1.6 qt. (1.5 L, 1.3 Imp.qt.)
Item
Clean funnel
■Adding engine oil
If the oil level is below or near the low
level mark, add engine oil of the same
type as that already in the engine.
1 Remove the oil filler cap by turning
it counterclockwise.
2 Add engine oil slowly, checking the
dipstick.
3 Install the oil filler cap by turning it
clockwise.
■Engine oil consumption
A certain amount of engine oil will be con-
sumed while driving. In the following situa-
tions, oil consumption may increase, and
engine oil may need to be refilled in
between oil maintenance intervals.
●When the engine is new, for example
directly after purchasing the vehicle or
A
B
C

2766-3. Do-it-yourself maintenance
after replacing the engine
●If low quality oil or oil of an inappropriate
viscosity is used
●When driving at high engine speeds or
with a heavy load, or when driving while
accelerating or decelerating frequently
●When leaving the engine idling for a long
time, or when driving frequently through
heavy traffic
The coolant level is satisfactory if it is
between the “F” and “L” lines on the
reservoir when the engine is cold.
■Engine coolant reservoirReservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add
coolant up to the “F” line. ( P.345)
■Coolant selection
Only use “Toyota Super Long Life Coolant”
or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mix-
ture of 50% coolant and 50% deionized
water. (Minimum temperature: -31°F [-
35°C])
Canada:
“Toyota Super Long Life Coolant” is a mix-
ture of 55% coolant and 45% deionized
water. (Minimum temperature: -44°F [-
42°C])
For more details about engine coolant, con-
tact your Lexus dealer.
■If the coolant level drops within a short
time of replenishing
Visually check the radi ator, hoses, engine
coolant reservoir caps, drain cock and
WARNING
■Used engine oil
●Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as inflamma-
tion and skin cancer, so care should be
taken to avoid prolonged and
repeated contact. To remove used
engine oil from your skin, wash thor-
oughly with soap and water.
●Dispose of used oil and filters only in a
safe and acceptable manner. Do not
dispose of used oil and filters in house-
hold trash, in sewers or onto the
ground.
Call your Lexus dealer, service station
or auto parts store for information
concerning recycling or disposal.
●Do not leave used engine oil within the
reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the
vehicle components.
●Avoid overfilling, or the engine could
be damaged.
●Check the oil level on the dipstick
every time you refill the vehicle.
●Be sure the engine oi l filler cap is prop-
erly tightened.
Checking the engine coolant
A
B
C

2776-3. Do-it-yourself maintenance
6
Maintenance and care
water pump.
If you cannot find a leak, have your Lexus
dealer test the cap and check for leaks in
the cooling system.
Check the radiator and condenser and
clear away any foreign objects.
If either of the above parts is extremely
dirty or you are not sure of their condi-
tion, have your vehicle inspected by
your Lexus dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
■Adding fluid
Make sure to check the fluid type and
prepare the necessary items.
 Fluid type
SAE J1703 or FMVSS No.116 DOT 3
brake fluid
SAE J1704 or FMVSS No. 116 DOT 4
brake fluid
Item
Clean funnel
■Brake fluid can absorb moisture from
the air
Excess moisture in the brake fluid can
cause a dangerous loss of braking effi-
ciency. Use only newly opened brake fluid.
WARNING
■When the engine is hot
Do not remove the engine coolant reser-
voir cap or the coolant inlet cap.
(  P.346)
The cooling system may be under pres-
sure and may spray hot coolant if the cap
is removed, causing serious injuries, such
as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor
straight antifreeze. The correct mixture
of water and antifreeze must be used to
provide proper lubrication, corrosion
protection and cooling. Be sure to read
the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to pre-
vent it from damagi ng parts or paint.
Checking the radiator and con-
denser
WARNING
■When the engine is hot
Do not touch the radiator or condenser
as they may be hot and cause serious
injuries, such as burns.
Checking and adding the brake
fluid

2786-3. Do-it-yourself maintenance
If any washer does not work or “Wind-
shield Washer Fluid Low” is shown on
the multi-information display, the
washer tank may be empty. Add
washer fluid.
WARNING
■When filling the reservoir
Take care as brake fluid can harm your
hands and eyes and damage painted sur-
faces.
If fluid gets on your hands or in your eyes,
flush the affected area with clean water
immediately.
If you still experience discomfort, see a
doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go
down slightly as the brake pads wear out
or when the fluid level in the accumulator
is high.
If the reservoir need s frequent refilling,
there may be a serious problem.
Checking and adding the washer
fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the engine
is hot or running as washer fluid contains
alcohol and may catch fire if spilled on
the engine etc.
NOTICE
■Do not use any fluid other than
washer fluid
Do not use soapy water or engine anti-
freeze instead of washer fluid.
Doing so may cause streaking on the
vehicle’s painted surfaces, as well as
damaging the pump leading to problems
of the washer fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as neces-
sary.
Refer to the freezing temperatures listed
on the label of the washer fluid bottle.