water LEXUS LS500 2019 Workshop Manual

4137-2. Steps to take in an emergency
LS500_OM_(U)_1810 7
When trouble arises  Fluid leaks under the vehicle.
(Water dripping from the air condi-
tioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 Engine coolant temperature gauge
needle continually points higher
than normal.
 Changes in exhaust sound
 Excessive tire squeal when corner-
ing
 Strange noises related to the sus-
pension system
 Pinging or other noises related to
the engine
 Engine missing, stumbling or run-
ning roughly
 Appreciable loss of power
 Vehicle pulls heavily to one side
when braking  Vehicle pulls heavily to one side
when driving on a level road
 Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor
If you think something is
wrong If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact your Lexus dealer as soon as
possible.
Visible symptoms
Audible symptoms
Operational symptoms

4397-2. Steps to take in an emergency
LS500_OM_(U)_1810 7
When trouble arises WARNING■
When removing the battery terminals
Always remove the negative (-) terminal
first. If the positive (+) terminal contacts
any metal in the surrounding area when
the positive (+) terminal is removed, a
spark may occur, leadin g to a fire in addi-
tion to electrical shocks and death or
serious injury. ■
Avoiding battery fires or explosions
Observe the following precautions to
prevent accidentally igniting the flamma-
ble gas that may be emitted from the bat-
tery: ●
Make sure each jumper cable is con-
nected to the correct terminal and that
it is not unintentiona lly in contact with
any other than the intended terminal.●
Do not allow the other end of the
jumper cable connected to the “+” ter-
minal to come into contact with any
other parts or metal surfaces in the
area, such as brackets or unpainted
metal.●
Do not allow the + and - clamps of the
jumper cables to come into contact
with each other.
●
Do not smoke, use matches, cigarette
lighters or allow open flame near the
battery.
■
Battery precautions
The battery contains poisonous and cor-
rosive acidic electrolyte, while related
parts contain lead and lead compounds.
Observe the following precautions when
handling the battery:
●
When working with the battery, always
wear safety glasses and take care not
to allow any battery fluids (acid) to
come into contact with skin, clothing
or the vehicle body.
●
Do not lean over the battery. ●
In the event that battery fluid comes
into contact with the skin or eyes,
immediately wash the affected area
with water and seek medical attention.
Place a wet sponge or cloth over the
affected area until medical attention
can be received. ●
Always wash your ha nds after handling
the battery support, terminals, and
other battery-related parts. ●
Do not allow children near the battery. ■
After recharging the battery
Have the battery inspected at your Lexus
dealer as soon as possible.
If the battery is deteriorating, continued
use may cause the battery to emit a mal-
odorous gas, which may be detrimental
to the health of passengers. ■
When replacing the battery ●
When the vent plug and indicator are
close to the hold down clamp, the bat-
tery fluid (sulfuric acid) may leak. ●
For information regarding battery
replacement, contact your Lexus
dealer. ●
After replacing, se curely attach the
exhaust hose and exhaust hole plug to
the exhaust hole of the replaced bat-
tery. If not properly installed, gases
(hydrogen) may leak into the vehicle
interior, and there is the possible dan-
ger of the gas igniting and exploding.
NOTICE
■
When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fan or engine drive
belt.
■
To prevent damaging the vehicle
The exclusive jump starting terminal is to
be used when chargi ng the battery from
another vehicle in an emergency. It can-
not be used to jump start another vehicle.

4417-2. Steps to take in an emergency
LS500_OM_(U)_1810 7
When trouble arises Reservoir
“F” line
“L” line
5 Add coolant if necessary.Water can be used in an emergency if
coolant is unavailable.
 Engine 
P.441
 Intercooler Remove the engine compartment cover
and add coolant. 6 Start 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.)
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.A
B
C

4498-1. Specifications
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Vehicle specifications containers to help you select the oil you
should use.
Cooling system Capacity 
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) Make DENSO EC22HPR-D7
Gap 0.028 in. (0.7 mm)
NOTICE
■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

500 Alphabetical Index
LS500_OM_(U)_1810 If the electronic key does not operate
properly....................................................... 433
If the engine will not start .......................430
If the fuel filler door cannot be opened
......................................................................... 432
If the vehicle is trapped in rising water
......................................................................... 407
If you have a flat tire .................................. 429
If you lose your keys................................. 432
If you think something is wrong ........... 413
If your vehicle becomes stuck............. 443
If your vehicle has to be stopped in an
emergency ................................................406
If your vehicle needs to be towed .....409
If your vehicle overheats ........................440
Engine
ACCESSORY mode ...............................166
Compartment ............................................. 373
Engine compartment cover ................. 374
Engine switch.................................................164
Fuel pump shut off system ...................... 414
Hood.................................................................. 371
How to start the engine............................164
Identification number ............................... 447
If the engine will not start .......................430
If your vehicle has to be stopped in an
emergency ................................................406
Ignition switch (engine switch) .............164
Overheating.................................................440
Tachometer ............................................. 73, 76
Engine compartment cover .................... 374
Engine coolant
Capacity ......................................................... 449
Checking ........................................................377
Preparing and checking before winter
........................................................................ 300
Engine coolant temperature gauge 73, 76
Engine immobilizer system ........................ 63
Engine oil
Capacity .........................................................448
Checking ....................................................... 375 Preparing and checking before winter
......................................................................... 300
Warning light ................................................ 416
Engine oil maintenance data ...................377
Engine switch ..................................................164
Auto power off function........................... 166
Changing the engine switch modes . 166
If your vehicle has to be stopped in an
emergency ................................................ 406
EPS (Electric Power Steering) .............. 295
Warning light ................................................ 418
Event data recorder (E DR) ............................7 F
FCTA (Front Cross Traffic Alert) ......... 222
First-aid kit storage belt ..............................341
Flat tire
Tire pressure warning system ............ 384
Floor mats ...........................................................22
Fluid
Automatic transmission ......................... 450
Brake ................................................................. 451
Washer ........................................................... 379
Footwell light ...................................................331
Front automatic air conditioning system
............................................................................313
Front Cross Traffic Alert (FCTA) ......... 222
Front passenger occupant classification
system .............................................................. 40
Front seats
Adjustment ....................................................... 119
Cleaning .......................................................... 361
Correct driving posture ............................ 23
Driving position memory ........................ 130
Head restraints............................................. 135
Memory recall function............................ 133
Power easy access system .................... 130
Refresh system ..............................................124
Seat heaters ..................................................326
Seat position memory .............................. 130
Seat ventilators ............................................326