2019 LEXUS LS500 check engine

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

448 8-1. Specifications
LS500_OM_(U)_1810 ■
Oil capacity (Drain and refill [Ref-
erence *
]) *
: The engine oil capacity is a reference
quantity to be used when changing the
engine oil. Warm up and turn off the
engine, wait more than 5 minutes, and
check the oil level on the dipstick.■
Engine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil”
or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade
engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good starting
in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20 at the next oil change.
Recommended viscosity (SAE):
Outside temperature
Oil viscosity (0W-20 is explained here
as an example):
• The 0W in 0W-20 indicates the
characteristic of the oil which allows
cold startability. Oils with a lower
value before the W allow for easier
starting of the engine in cold
weather.
• The 20 in 0W-20 indicates the vis-
cosity characteristic of the oil when
the oil is at high temperature. An oil
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:
The International Lubricant Specifica-
tion Advisory Committee (ILSAC)
Certification Mark is added to some oil Octane Rating 91 (Research Octane Number 96) or higher
Fuel tank capacity
(Reference) 21.7 gal. (82.0 L, 18.0 Imp. gal.)
Lubrication system With filter 
2WD models
6.7 qt. (6.3 L, 5.5 Imp. qt.) 
AWD models
7.5 qt. (7.1 L, 6.2 Imp. qt.)
Without fil-
ter 
2WD models
6.1 qt. (5.8 L, 5.1 Imp. qt.) 
AWD models
7.0 qt. (6.6 L, 5.8 Imp. qt.)
A

4518-1. Specifications
LS500_OM_(U)_1810 8
Vehicle specifications matching quality to satisfy th e above specification. Please contact your Lexus dealer for
further details. 
2WD models 
AWD models *
: Your Lexus vehicle is filled with “Toyota Genu ine Differential Gear Oil” at the factory.
Use Lexus approved “Toyota Ge nuine Differential Gear Oil” or an equivalent oil of
matching quality to satisfy th e above specification. Please contact your Lexus dealer for
further details.
*1
: Minimum pedal clearance when depressed with a force of 11 2 lbf (500 N, 51 kgf) while
the engine is running.
When performing the brake pedal inspection, also be sure to check that the brake sys-
tem warning light is not illuminated when th e engine is running. (If the brake system Rear differential Oil capacity 0.90 qt. (0.85 L, 0.75 Imp. qt.)
Oil type and viscosity *
Toyota Genuine Differential gear oil LT 75W-85
GL-5 or equivalent
Oil capacity 1.42 qt. (1.35 L, 1.19 Imp. qt.)
Oil type and viscosity *
Toyota Genuine Differential gear oil LT 75W-85
GL-5 or equivalent
Brakes Pedal clearance *1
4.8 in. (121 mm) Min. *3
4.8 in. (122 mm) Min. *4
Pedal free play 0.04  0.24 in. (1  6 mm)
Brake pad wear limit 0.04 in. (1 mm)
Parking brake lining wear limit 0.04 in. (1 mm)
Parking brake indicator *2
When pushing the parking brake switch for 1 to 2
seconds: comes on
When pulling the parking brake switch for 1 to 2
seconds: turns off
Fluid type FMVSS No.116 DOT 3 or SAE J1703
FMVSS No.116 DOT 4 or SAE J1704

494 What to do if... (Troubleshooting)
LS500_OM_(U)_1810 1-1.What to do if... (Troubleshooting)
What to do if... (Troubleshooting)  If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
(  P.432)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. (  P.432)
 Is the electronic key battery weak or
depleted? (  P.399)
 Is the engine switch in IGNITION
ON mode? When locking the doors, turn the engine
switch off. ( 
P.166 )
 Is the electronic key left inside the
vehicle? When locking the doors, make sure that
you have the electronic key on your per-
son.  The function may not operate prop-
erly due to the condition of the radio
wave. (  P.113)
 Is the child-protector lock set? The rear door cannot be opened from
inside the vehicle when the lock is set.
Open the rear door from outside and then
unlock the child-protector lock. ( 
P.103 )
 The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. (  P.109)
 Did you press the engine switch
while firmly depressing the brake
pedal? (  P.164)
 Is the electronic key anywhere
detectable inside the vehicle?
(  P.112)
 Is the steering wheel unlocked?
(  P.164)
 Is the electronic key battery weak or
depleted?If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed You lose your keys
The electronic key does not
operate properly
The doors cannot be locked or
unlocked The rear door cannot be opened
The trunk lid is closed with the
electronic key left inside
If you think something is wrong The engine does not start

4951-1. What to do if... (Troubleshooting)
LS500_OM_(U)_1810 495What to do if... (Troubleshooting)
In this case, the engine can be started in a
temporary way. ( 
P.434 )
 Is the battery discharged?
(  P.435)
 It is locked automatically to prevent
theft of the vehicle. (  P.164)
 Is the window lock switch pressed? The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( 
P.144 )
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY mode for a period of
time. (  P.166)
 The seat belt reminder light is flash-
ing Are the driver and the front passenger
wearing the seat belts? ( 
P.418 )
 The parking brake indicator is on Is the parking brake released? ( 
P.174 )
Depending on the situation, other
types of warning buzzer may also sound. (  P.415, 425)
 Did anyone inside the vehicle open
a door during setting the alarm? The sensor detects it and the alarm sounds.
( 
P.65 )
Do one of the following to deactivate
or stop the alarms:
 Unlock the doors.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (The alarm will be
deactivated or stopped after a few
seconds.)
 Is the message displayed on the
multi-information display? Check the message on the multi-informa-
tion display. ( 
P.425 )
 When a warning light turns on or a
warning message is displayed, refer
to P.415, 425.The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire

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

502 Alphabetical Index
LS500_OM_(U)_1810 Initialization
Items to initialize .......................................... 481
Maintenance .................................... 364, 377
Power windows............................................ 142
Tire pressure warning system ............ 388
Inside door handle lights ............................331
Inside rear view mirror ................................139
Instrument panel light control ........... 75, 79
Intercooler...................................................... 378
Intercooler coolant
Capacity ......................................................... 449
Checking ........................................................377
Interior lights....................................................331
Front interior light ........................................331
Rear interior light .........................................331
Intuitive parking assist..................... 255, 257
Function .......................................................... 257
Warning message..................................... 259
J
Jack
Positioning a floor jack.............................. 371
Jam protection function
Electronic roof sunshade.........................149
Moon roof .......................................................145
Panoramic moon roof...............................149
Power trunk opener and closer .......... 109
Power windows............................................ 142
Rear door sunshade ................................ 347
K
Keyless entry
Smart access system with push-button
start ..................................................................... 111
Wireless remote control........................... 98
Keys
Battery-saving function ..............................112
Electronic key ................................................. 96
Engine switch.................................................164
If the electronic key does not operate
properly....................................................... 433 If you lose your keys ................................. 432
Key number plate .........................................96
Keyless entry .......................................... 100, 111
Mechanical key .............................................. 96
Replacing the battery .............................. 399
Warning buzzer ............................................ 112
Wireless remote control ...........................98
Knee airbags .................................................... 29 L
Lane change assist function .................... 225
Lane Tracing Assist (LTA)
Operation ...................................................... 225
Warning messages................................... 237
Language (multi-information display) ... 85
LATCH anchors ............................................. 53
LDH (Lexus Dynamic Handling system)
.......................................................................... 295
Lever
Auxiliary catch lever ...................................371
Hood lock release lever ...........................371
Internal trunk release lever..................... 109
Shift lever ..........................................................167
Turn signal lever ...........................................173
Wiper lever .................................................... 184
Lexus climate concierge ............................. 311
Lexus Dynamic Handling system (LDH)
.......................................................................... 295
Lexus Enform Safety Connect.................. 58
Lexus Safety System + 2.0
Automatic High Beam ............................. 182
Dynamic radar cruise control with
full-speed range ...................................... 237
LTA(Lane Tracing Assist) ..................... 225
PCS (Pre-Collision System) ................. 215
RSA (Road Sign Assist).......................... 247
Lexus Safety System + A ............................. 191
Automatic High Beam ............................. 182
Dynamic radar cruise control with
full-speed range .......................... 237, 247
FCTA (Front Cross Traffic Alert)...... 222
LTA (Lane Tracing Assist) .................... 225

5091-1. What to do if... (Troubleshooting)
LS500_OM_(U)_1810 509Alphabetical Index
Charging system .........................................416
Downshifting ........................................ 172, 173
Drive-Start Control .................................... 417
Electric power steering ........................... 418
Engine ...............................................................416
High coolant temperature ......................415
Intuitive parking assist.................. 263, 420
Low engine oil pressure...........................416
LTA (Lane Tracing Assi st)..........225, 419
Open door............................................ 101, 103
Open window ............................................... 143
PKSA (Parking Support Alert) ........... 256
PKSB (Parking Support Brake) ........... 421
Pop Up Hood ............................................... 417
Pre-collision braking......................204, 216
RCD (Rear Camera Detection) ........ 420
RCTA (Rear Cross Traffic Alert) ...... 420
Seat belt ................................................. 418, 419
Warning lights.................................................415
ABS .................................................................... 417
Brake hold operated indicator ........... 422
Brake Override System ........................... 417
Brake system .................................................415
Charging system .........................................416
Drive-Start Control .................................... 417
Electric power steering ........................... 418
High coolant temperature ......................415
Intuitive parking assist OFF indicator
......................................................................... 420
Low engine oil pressure...........................416
Low fuel level ................................................ 418
LTA indicator .................................................419
Malfunction indicator lamp.....................416
Master warning light ................................ 422
Parking brake indicator .......................... 422
PKSB OFF indicator .................................. 421
Pop Up Hood ............................................... 417
Pre-collision system ................................... 421
RCD OFF indicator ................................. 420
RCTA OFF indicator............................... 420
Seat belt reminder light ................. 418, 419
Slip indicator .................................................. 421 SRS ..................................................................... 416
Tire pressure ................................................. 419
Warning messages ..................................... 425
Warning reflector storage belt................341
Washer
Adding............................................................. 379
Preparing and checking before winter
......................................................................... 300
Switch................................................................ 184
Washing and waxing..................................358
Weight
Cargo capacity .............................................162
Load limits .......................................................162
Weight.............................................................446
Wheels
Replacing wheels ........................................ 391
Size ....................................................................452
Window lock switch .....................................144
Windows
Power windows ............................................142
Rear window defogger.............................314
Washer ............................................................ 184
Windshield wiper de-icer ..........................319
Windshield wipers
Position............................................................. 187
Rain-sensing windshield wipers .......... 184
Winter driving tips.......................................300
Wireless remote control
Battery-Saving Function............................ 112
Locking/Unlocking .....................................98
Replacing the battery .............................. 399
?
For information regarding the
equipment listed below, refer to
the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S
MANUAL”.
· Navigation system
· Audio/visual system