2020 Lexus ES350 cooling

3847-2. Steps to take in an emergency
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.
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
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 oper ate 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.
A
B
A
B
C
D
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.

3857-2. Steps to take in an emergency
7
When trouble arises
1Stop the engine. Set the parking
brake and shift the shift lever to P.
2
Remove the mud, snow or sand
from around the front wheels.
3
Place wood, stones or some other
material under the front wheels to
help provide traction.
4
Restart the engine.
5
Shift the shift lever to D or R and
release the parking brake. Then,
while exercising caution, depress
the accelerator pedal.
■When it is difficult to free the vehicle
Press the switch to turn off TRAC.
WARNING
●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 sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
●Do not use any coolant additive.
If the vehicle becomes stuck
Carry out the following proce-
dures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Recovering procedure

3918-1. Specifications
8
Vehicle specifications
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Lexus dealer.
■Spark plug
Cooling system
Capacity*9.1 qt. (8.6 L, 7.6 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
MakeDENSO FK20HBR8
Gap0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system (battery)
Open voltage at 68°F (20°C):12.3 V or higher
(Turn the engine switch off and turn on the high beam
headlights for 30 seconds.)
Charging rates
Quick charge
Slow charge
15 A max.
5 A max.
Automatic transmission
Fluid capacity*7.9 qt. (7.5 L, 6.6 Imp.qt.)
Fluid typeToyota Genuine ATF WS

436Alphabetical index
C
Care ...................................................... 302, 305Aluminum wheels ...................................... 302
Exterior ........................................................... 302
Interior ............................................................ 305
Seat belts....................................................... 305
Cargo capacity................................................ 141
Cargo hooks ................................................. 278
Center Display ............................................. 254
Chains .............................................................. 250
Child-protectors............................................. 98
Child restraint system................................... 42 Fixed with a LATCH system .................. 49
Fixed with a seat belt................................... 46
Front passenger occupant classification system ..............................................................37
Points to remember .....................................42
Riding with children ......................................42
Types of child restraint system installation method ........................................................... 43
Using an anchor bracket ............................ 51
Child safety ....................................................... 42 Airbag precautions...................................... 33
Battery precautions ........... 321, 382, 382
Child restraint system................................. 43
Heated steering wheel and seat heater precautions................................................268
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 127
Panoramic moon roof precautions ..... 131
Power window lock switch.....................125
Power window precautions ...................125
Rear door child-protectors ..................... 98
Removed electronic key battery precau- tions ............................................................... 337
Seat belt extender precautions ............. 25
Seat belt precautions ...................................24
Trunk precautions ........................................ 99
Cleaning.............................................. 302, 305 Aluminum wheels ...................................... 302 Exterior............................................................302
Interior ............................................................ 305
Radar sensor .....................................169, 205
Seat belts ....................................................... 305
Clock ................................................ 70, 73, 279
Coat hooks..................................................... 290
Compass ......................................................... 297
Condenser .......................................................319
Console box ...................................................276
Console box light .........................................276
Cooling system.............................................. 318 Engine overheating.................................. 383
Cornering lights ............................................ 158 Replacing light bulbs ..................................341
Cruise control Dynamic radar cruise control with full-
speed range ............................................... 193
Cup holder ......................................................276
Current fuel consumption ...........................79
Curtain shield airbags .................................. 28
Customizable features .............................. 406
D
Daytime running light system ...................156
Defogger Outside rear view mirrors..................... 262
Rear window ................................................ 262
Windshield .................................................... 262
Dimension ......................................................388
Dinghy towing................................................. 142
Display BSM (Blind Spot Monitor)....................203
Dynamic radar cruise control with full-
speed range ............................................... 193
Head-up display............................................84
Intuitive parking assist ................................ 212
LTA (Lane Tracing Assist) ..................... 187
Multi-information display ...........................77
Parking Support Brake function (rear pedestrians)............................................... 242
RCD (Rear Camera Detection) ........ 223
RCTA.................................................................219