cooling LEXUS LS500 2021 User Guide

4507-2. Steps to take in an emergency
radiator core (radiator) for any
leaks.
Radiators
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.
Engine
Reservoir
“F” line
“L” line
Coolant inlet cap
IntercoolerReservoir
“F” line
“L” line
5 Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Engine
P.451
Intercooler
Remove the engine compartment cover
and add coolant.
A
B
A
B
C
D
A
B
C

4517-2. Steps to take in an emergency
7
When trouble arises
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.
■When adding engine coolant
Add coolant in accordance with the follow-
ing procedure. 1
Remove the engine compartment
cover.
2 Remove the engine cover. ( P.384)
3 Remove the caps and .
4 Add coolant through the inlet of the cap
up to the “F” line , and then
replace the cap .
5 Add coolant through the inlet of the cap
until it is full, and then replace the
cap .
6 Install the engine compartment cover
and engine cover. ( P.385)
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.
AB
AC
A
B
B

4527-2. Steps to take in an emergency
1Stop the engine. Set the parking
brake and shift the shift position to
P.
2 Remove the mud, snow or sand
from around the rear wheels.
3 Place wood, stones or some other
material under the rear wheels to
help provide traction.
4 Restart the engine.
5 Shift the shift position 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
●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.
●Do not loosen the coolant inlet cap,
the engine coolant reservoir cap or the
intercooler coolant reservoir cap while
the engine and radiator are hot.
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

4598-1. Specifications
8
Vehicle specifications
containers to help you select the oil you
should use.
Cooling system
Capacity (Reference)
Engine
2WD models: 11.2 qt. (10.6 L, 9.3 Imp. qt.)
AWD models: 11.1 qt. (10.5 L, 9.2 Imp. qt.)
Intercooler
4.5 qt. (4.3 L, 3.8 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 orga nic acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO EC22HPR-D7
Gap0.028 in. (0.7 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

508Alphabetical Index
Parking brake ............................................... 186
Warning light ............................................... 427
Brake assist .................................................... 304
Break-in tips.....................................................165
Brightness control Instrument panel light control ......... 77, 81
BSM (Blind Spot Monitor)....................... 264
Buzzer Hands off steering wheel warning (LTA)......................................................................... 249
C
Card key ............................................................ 98
Care Exterior ...........................................................368
Interior ............................................................... 371
Seat belts.......................................................... 371
Wheels and wheel ornaments............368
Cargo capacity............................................... 172
Cargo net ....................................................... 349
Center Display ...............................................316
Chains ............................................................... 310
Child restraint system Fixed with a LATCH system .................. 53
Fixed with a seat belt...................................50
Front passenger occupant classification system ............................................................. 40
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 55
Child safety Airbag precautions...................................... 34
Battery precautions ....................... 391, 448
Child restraint system................................. 46
Heated steering wheel and seat heater precautions................................................ 336
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 157
Panoramic moon roof precautions ..... 161 Power window lock switch .................... 155
Power window precautions .................. 154
Rear door child-protectors ................... 105
Removed electronic key battery precau-
tions .................................................................. 411
Seat belt extender precautions.............. 25
Seat belt precautions .................................. 45
Trunk precautions....................................... 106
Child-protectors........................................... 105
Cleaning Exterior........................................................... 368
Interior ...............................................................371
Radar sensor ................................... 203, 209
Seat belts ..........................................................371
Wheels and wheel ornaments ........... 368
Clock ................................................75, 78, 354
Clock light ...................................................... 340
Coat hooks..................................................... 353
Coin holder .................................................... 346
Condenser ..................................................... 389
Console box .................................................. 347
Consumption screen .................................... 93
Cooling system.............................................388 Engine overheating...................................449
Cornering lights .............................................192
Cruise control Dynamic radar cruise control with full-speed range ........................... 251, 254
Cup holders ................................................... 346
Current fuel consumption .......................... 84
Curtain shield airbags .................................. 29
Customizable features ...............................476
D
Daytime running light system .................. 190
Defogger Outside rear view mirrors..................... 324
Rear window ................................................ 324
Windshield .................................................... 324
Differential Front differential oil............. ...................... 460
Rear differential oil. ..................................... 461