radiator LEXUS ES350 2022 Owners Manual

3056-2. Maintenance
6
Maintenance and care
Radiator/con-
denser
The radiator and con-
denser should be free
from foreign objects.
( P.316)
Washer fluid
Is there sufficient
washer fluid?
( P.319)
Vehicle interior
ItemsCheck points
Accelerator
pedal
• The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Automatic trans-
mission “Park”
mechanism
•When parked on a slope and the shift
lever is in P, is the
vehicle securely
stopped?
Brake pedal
• Does the brake pedal move
smoothly?
• Does the brake pedal have appro-
priate clearance
from the floor?
• Does the brake pedal have the cor-
rect amount of free
play?
ItemsCheck points
Brakes
• The vehicle should not pull to one side
when the brakes are
applied.
•The brakes should work effectively.
• The brake pedal should not feel
spongy.
• The brake pedal should not get too
close to the floor
when the brakes are
applied.
Head restraints
•Do the head restraints move
smoothly and lock
securely?
Indicators/buzz-
ers•Do the indicators and buzzers function
properly?
Lights
• Do all the lights come on?
• Are the headlights aimed correctly?
Parking brake
•Does the parking brake operate nor-
mally?
•When parked on a slope and the park-
ing brake is on, is the
vehicle securely
stopped?
Seat belts
• Do the seat belts operate smoothly?
• The seat belts should not be damaged.
ItemsCheck points

3086-3. Do-it-yourself maintenance
6-3.Do-it-yo urself mainte nance
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.317)
•Grease
• Conventional wrench
(for terminal clamp
bolts)
Brake fluid
level
( P.317)
• 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.316)
•“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.313)
•“Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P.335)• Fuse with same amper-
age rating as original
Headlight aim• Phillips-head screw-driver
Light bulbs
( P.338)
• Bulb with same number
and wattage rating as
original
• Flathead screwdriver
Radiator and
condenser
(  P.316)

ItemsParts and tools

3096-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation
pressure
( P.328)• Tire pressure gauge
• Compressed air source
Washer fluid
( P.319)
• 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, clothing 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.316)
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.

3126-3. Do-it-yourself maintenance
2GR-FKS engineFuse boxes ( P.335)
Engine oil filler cap ( P.314)
Engine oil level dipstick ( P.313)
Battery ( P.317)
Brake fluid reservoir ( P.317)
Radiator ( P.316)
Electric cooling fan
Condenser ( P.316)
Engine coolant reservoir ( P.316)
Washer fluid tank ( P.319)
Engine compartment
Components
A
B
C
D
E
F
G
H
I
J

3136-3. Do-it-yourself maintenance
6
Maintenance and care
A25A-FKS engineFuse boxes ( P.335)
Engine oil filler cap ( P.314)
Engine oil level dipstick ( P.313)
Battery ( P.317)
Brake fluid reservoir ( P.317)
Radiator ( P.316)
Electric cooling fan
Condenser ( P.316)
Engine coolant reservoir ( P.316)
Washer fluid tank ( P.319)
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 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.
A
B
C
D
E
F
G
H
I
J
Checking and adding the engine
oil

3166-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is
between the “F” and “L” lines on the
reservoir when the engine is cold.Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add
coolant up to the “F” line. ( P.382)
■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 radiator, hoses, engine
coolant reservoir cap, drain cock and 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.
NOTICE
●Be sure the engine oil filler cap is prop-
erly tightened.
Checking the engine coolant
A
B
C
WARNING
■When the engine is hot
Do not remove the engine coolant reser-
voir cap or the radiator cap. ( P.384)
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 damaging parts or paint.
Checking the radiator and con-
denser

3176-3. Do-it-yourself maintenance
6
Maintenance and care
■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
FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
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.
Check the battery as follows.
■Battery exterior
Make sure that the battery terminals
are not corroded and that there are no
loose connections, cracks, or loose
clamps.
Terminals
Hold-down clamp
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
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 needs frequent refilling,
there may be a serious problem.
Checking the battery
A
B

3837-2. Steps to take in an emergency
7
When trouble arises
radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
2GR-FKS engine
Reservoir
“F” line
“L” line
Coolant inlet cap
A25A-FKS engineReservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
2GR-FKS engine
Water can be used in an emergency if
coolant is unavailable.
A25A-FKS engine
Water can be used in an emergency if
coolant is unavailable.
A
B
A
B
C
D
A
B
C
D

3847-2. Steps to take in an emergency
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
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.)
7 If 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.
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.
■To prevent damage to the cooling
system
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
●Do not use any coolant additive.

444Alphabetical index
Panic mode ....................................................... 94
Panoramic moon roofJam protection function............................129
Operation........................................................128
Parking assist sensors (intuitive parking assist) ............................................................... 216
Parking brake..................................................154 Operation........................................................154
Parking brake engaged warning buzzer.......................................................................... 155
Warning light ............................................... 357
Warning message...................................... 155
Parking lights .................................................. 158 Light switch.................................................... 158
Parking Support Brake function (rear- crossing vehicles) .......................... 232, 242
Parking Support Brake function (rear pedestrians) ..................................... 232, 244 Function .......................................................... 244
Parking Support Brake function (static objects) .............................................. 232, 239 Function .......................................................... 239
PCS (Pre-Collision System) ..................... 176 Function ............................................................ 176
PCS OFF switch .......................................... 179
Warning light ............................................... 357
Personal lights............................................... 273
PKSA (Parking Support Alert) ................215
PKSB (Parking Support Brake)............. 232 Warning message..................................... 237
Power easy access system ......................... 113
Power outlet ..................................................280
Power steering (Electric power steering system) .......................................................... 246 Warning light ...............................................353
Power trunk lid .............................................. 100
Power windows ..............................................123 Door lock linked window operation.. 124
Jam protection function............................ 123
Operation........................................................ 123
Window lock switch .................................. 124
Pre-Collision System (PCS) ..................... 176 Function ............................................................176
PCS OFF switch ..........................................179
Warning light ...............................................357
R
Radar cruise control (dynamic radar cruise
control with full-speed range).............. 198
Radiator .............................................................316
RCD (Rear Camera Detection) ........... 229 Function .......................................................... 229
Warning message .....................................230
RCTA (Rear Cross Traffic Alert) ......... 223
RCTA Function .......................................................... 223
Warning message ..................................... 224
Rear Cross Traffic Alert (RCTA) ......... 223
Rear door sunshades ................................. 287
Rear seats Head restraints............................................... 116
Rear side marker lights .............................. 158 Light switch .................................................... 158
Replacing light bulbs............................... 338
Rear sunshades ............................................ 286
Rear turn signal lights ..................................153 Replacing light bulbs............................... 338
Turn signal lever .......................................... 153
Rear view mirror Inside rear view mirror ............................... 119
Outside rear view mirrors...................... 120
Rear window defogger ............................. 263
Refueling ...........................................................169 Capacity ........................................................ 390
Fuel types ...................................................... 390
If the fuel filler door cannot be opened..........................................................................376
Opening the fuel tank cap ..................... 169
Remote Touch .............................................. 256
Replacing Electronic key battery..............................333
Fuses.................................................................335
Light bulbs .................................................... 338
Tires ................................................................. 365