2021 LEXUS ES350 Owners Manual

3136-2. 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

3146-3. 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.323)
•Warm water
•Baking soda
•Grease
• Conventional wrench
(for terminal clamp
bolts)
Brake fluid
level
( P.323)
• FMVSS No.116 DOT 3
or SAE J1703 brake
fluid
FMVSS No.116 DOT 4
or SAE J1704 brake
fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant
level
( P.322)
•“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.319)
•“Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P.342)• Fuse with same amper-
age rating as original
Headlight aim• Phillips-head screw-driver
Light bulbs
( P.346)
•Bulb with same number
and wattage rating as
original
•Flathead sc rewdriver
Radiator and
condenser
( P.322)

ItemsParts and tools

3156-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation
pressure
( P.336)• Tire pressure gauge
• Compressed air source
Washer fluid
( P.325)
• 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 or the battery.
Fuel and battery 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 IGNITION
ON mode, the electric cooling fan may
automatically start to run if the air condi-
tioning is on and/or the coolant tempera-
ture is high. ( P.322)
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.

3166-3. 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

3176-3. Do-it-yourself maintenance
6
Maintenance and care
■Rear
2WD models
AWD models

3186-3. Do-it-yourself maintenance
2GR-FKS engineFuse box ( P.342)
Engine oil filler cap ( P.320)
Engine oil level dipstick ( P.319)
Battery ( P.323)
Brake fluid reservoir ( P.323)
Radiator ( P.322)
Electric cooling fan
Condenser ( P.322)
Engine coolant reservoir ( P.322)
Washer fluid tank ( P.325)
Engine compartment
Components
A
B
C
D
E
F
G
H
I
J

3196-3. Do-it-yourself maintenance
6
Maintenance and care
A25A-FKS engineFuse boxes ( P.342)
Engine oil filler cap ( P.320)
Engine oil level dipstick ( P.319)
Battery ( P.323)
Brake fluid reservoir ( P.323)
Radiator ( P.322)
Electric cooling fan
Condenser ( P.322)
Engine coolant reservoir ( P.322)
Washer fluid tank ( P.325)
With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.
■Checking the engine oil
1 Park the vehicle on level ground.
After warming up the engine and turning it
off, wait more than 5 minutes for the oil to
drain back into the bottom of the engine.
2Holding a rag under the end, pull
the dipstick out.
A
B
C
D
E
F
G
H
I
J
Checking and adding the engine
oil

3206-3. Do-it-yourself maintenance
2GR-FKS engine
A25A-FKS engine
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.
6
Wipe 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.400
 Oil quantity (Low  Full)
2GR-FKS engine:
1.9 qt. (1.8 L, 1.6 Imp.qt.)
A25A-FKS engine:
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.
2GR-FKS engine
A
B
C