cooling LEXUS ES350 2022 User Guide

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.

3928-1. Specifications
with a higher viscosity (one with a
higher value) may be better suited if
the vehicle is operated at high
speeds, or under extreme load con-
ditions.
How to read oil container label:
API registered mark is added to some
oil containers to help you select the oil
you should use.
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Lexus dealer.
■Spark plug
Cooling system
Capacity*2GR-FKS engine9.1 qt. (8.6 L, 7.6 Imp.qt.)
A25A-FKS engine7.3 qt. (6.9 L, 6.1 Imp.qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite, and non-borate coolant with long-
life hybrid organic acid technology
Do not use plain water alone.
Ignition system
2GR-FKS engineA25A-FKS engine
MakeDENSO FK20HBR8DENSO FC16HR-Q8
Gap0.031 in. (0.8 mm)0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

438Alphabetical index
C
Card key ............................................................ 92
Care ........................................................298, 301Aluminum wheels ......................................298
Exterior ...........................................................298
Interior .............................................................. 301
Seat belts......................................................... 301
Cargo capacity...............................................142
Cargo hooks ................................................. 279
Center Display ............................................. 258
Chains .............................................................. 252
Child-protectors............................................. 99
Child restraint system................................... 43 Fixed with a LATCH system ..................50
Fixed with a seat belt....................................47
Front passenger occupant classification system ..............................................................37
Points to remember .................................... 43
Riding with children ..................................... 43
Types of child restraint system installation method ........................................................... 44
Using an anchor bracket .......................... 53
Child safety ....................................................... 43 Airbag precautions...................................... 33
Battery precautions .........................318, 381
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 269
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 127
Panoramic moon roof precautions... 130
Power window lock switch..................... 124
Power window precautions ................... 124
Rear door child-protectors ..................... 99
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 43
Trunk precautions ...................................... 100
Cleaning ................................................298, 301 Aluminum wheels ......................................298
Exterior ...........................................................298 Interior .............................................................. 301
Radar sensor ....................................... 171, 209
Seat belts ......................................................... 301
Clock .................................................68, 71, 280
Coat hooks.....................................................288
Compass ......................................................... 294
Condenser .......................................................316
Console box ................................................... 277
Console box light .........................................277
Cooling system...............................................316 Engine overheating...................................382
Cornering lights ............................................ 160 Replacing light bulbs............................... 338
Cruise control Dynamic radar cruise control with full-speed range ............................................... 198
Cup holder ......................................................277
Current fuel consumption .......................... 78
Curtain shield airbags .................................. 28
Customizable features ..............................408
Custom mode .................................................213
D
Daytime running light system .................. 158
Defogger Outside rear view mirrors.....................263
Rear window ................................................263
Windshield ....................................................263
Dimension ......................................................388
Dinghy towing.................................................143
Display BSM (Blind Spot Monitor)................... 208
Dynamic radar cruise control with full-speed range ............................................... 198
Head-up display............................................83
Intuitive parking assist ................................216
LTA (Lane Tracing Assist) ....................... 191
Multi-information display .......................... 76
Parking Support Brake function (rear pedestrians)............................................... 244
RCD (Rear Camera Detection) ........ 229
RCTA............................................................... 223