2018 LEXUS LS500H ABS

4357-2. Steps to take in an emergency
LS500h_OM_OM50F42U_(U) 7
When trouble arises If it is, tighten it securely.
The light will go off after several driving
trips.
If the light does not go off even after several
trips, contact your Lexus dealer as soon as
possible. ■
Electric power steering system warning
light (warning buzzer)
When the 12-volt battery charge becomes
insufficient or the voltage temporarily
drops, the electric po wer steering system
warning light may come on and the warning
buzzer may sound. ■
When the tire pressure warning light
comes on
Inspect the tires to check if a tire is punc-
tured.
If a tire is punctured: → P.442
If none of the tires are punctured:
Turn the power switch off then turn it to ON
mode. Check if the ti re pressure warning
light comes on or blinks. 
If the tire pressure wa rning light blinks for
approximately 1 minute then stays on
There may be a malfunction in the tire
pressure warning syst em. Have the vehicle
inspected by your Lexus dealer immedi-
ately. 
If the tire pressure warning light comes
on
1 After the temperature of the tires has
lowered sufficiently, check the inflation
pressure of each tire and adjust them to
the specified level.
2 If the warning light does not turn off
even after several minutes have
elapsed, check that the inflation pres-
sure of each tire is at the specified level
and perform initialization. ( → P.401)
■
The tire pressure warning light may
come on due to natural causes
The tire pressure wa rning light may come
on due to natural causes such as natural air
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the
warning light (after a few minutes). ■
Conditions that the tire pressure warn-
ing system may not function properly
→ P.398
WARNING■
If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer.
The vehicle will become extremely
unstable during br aking, and the ABS
system may fail, which could cause an
accident resulting in death or serious
injury. ■
When the electric power steering
system warning light comes on
When the light comes on yellow, the
assist to the power st eering is restricted.
When the light comes on red, the assist
to the power steering is lost and handling
operations of the steering wheel become
extremely heavy.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more
force than usual. ■
If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions.
Failure to do so could cause a loss of
vehicle control and result in death or
serious injury.
●
Decelerate to the lowest appropriate
speed as soon as possible. Do not
drive over 50 mph (80 km/h).
●
Check and adjust the tire inflation
pressure immediately.
●
If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is prob able that you have
a flat tire. Have the flat tire replaced by
the nearest Lexus dealer.

4497-2. Steps to take in an emergency
LS500h_OM_OM50F42U_(U) 7
When trouble arises and fuse box cover. ( → P.385,
388)Push the tabs in and lift the lid off.
3 Open the exclusive jump starting
terminal cover.
4 Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cab le to on the second vehicle. Then,
connect a negative cable clamp to on the second vehicle and connect the
clamp at the other end of the negative cable to .
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump starting
terminal and any mo ving parts as shown in the illustration
5 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to recharge the 12-volt battery of your
vehicle. A
B
C
D
A
B
C
D

4999-1. For owners
LS500h_OM_OM50F42U_(U) 9
For owners Nettoyez avec un chiffon ou une
éponge humidifiés avec de l'eau savon-
neuse tiède. Vérifiez régulièrement
que les ceintures ne sont pas usées,
effilochées ou entaillées excessive-
ment.Traitement des ceintures de
sécurité ATTENTION
Inspectez le système de ceintures de
sécurité régulière ment. Contrôlez
l'absence de coupures, d'effilochages et
de pièces desserrées. N'utilisez pas une
ceinture de sécurité endommagée avant
qu'elle ne soit remplacée. Une ceinture
de sécurité endommagée ne permet pas
de protéger un occupant de blessures
graves ou mortelles.

5111-1. What to do if... (Troubleshooting)
LS500h_OM_OM50F42U_(U) 511Alphabetical Index
Alphabetical Index A
A/C
Air conditioning filter ...................................411
Front automatic air conditioning system
......................................................................... 323
Micro dust and pollen filter................... 329
Rear air conditioning system ............... 333
ABS (Anti-lock Brake System).............. 302
Warning light ............................................... 429
Adaptive Front-lighting System (AFS) .187
Adaptive Variable Suspension System303
AFS (Adaptive Front-lighting System) .187
Air conditioning filter .................................... 411
Air conditioning system
Air conditioning filter ...................................411
Front automatic air conditioning system
......................................................................... 323
Micro dust and pollen filter................... 329
Rear air conditioning system ............... 333
Airbags
Airbag operating conditions..................... 31
Airbag precautions for your child ........ 34
Correct driving posture .............................23
Curtain shield airbag operating condi-
tions .................................................................... 31
Curtain shield airbag precautions ....... 34
Front passenger occupa nt classification
system ............................................................. 40
General airbag precautions ................... 34
Locations of airbags.................................... 29
Modification and disposal of airbags ..37
Side airbag operating conditions ........... 31
Side airbag precautions ............................ 34
Side and curtain shield airbags operating
conditions........................................................ 31
Side and curtain shield airbags precau-
tions .................................................................. 34
SRS airbags ..................................................... 29
SRS warning light ...................................... 428
Alarm
Alarm .................................................................. 68 Warning buzzer ......................................... 427
Anchor brackets ..................................... 46, 55
Antennas (smart acc ess system with
push-button start)........................................ 119
Anti-lock Brake System (ABS).............. 302
Warning light ............................................... 429
Approach warning...................................... 256
Armrest............................................................ 352
Assist grips ..................................................... 352
Audio system-linked display ...................... 90
Automatic headlight leveling system ... 186
Automatic High Beam ............................... 188
Automatic light control system............... 185
Auxiliary boxes .................................. 347, 349
Average fuel economy................................. 88
Average vehicle speed ................................ 88
B
Back-up lights
Replacing light bulbs ..................................417
Battery (12-volt battery)
Battery checking ........................................393
If the 12-volt battery is discharged .... 447
Preparing and checking before winter
......................................................................... 309
Warning light ...............................................428
Battery (traction battery) .............................. 61
Blind Spot Monitor (BSM)....................... 260
Brake
Brake hold ...................................................... 183
Fluid.................................................................. 465
Parking brake ................................................. 181
Regenerative braking .................................59
Warning light ............................................... 427
Brake assist .................................................... 302
Break-in tips.....................................................159
Brightness control
Instrument panel light control........ 79, 85
BSM (Blind Spot Monitor)....................... 260

5231-1. What to do if... (Troubleshooting)
LS500h_OM_OM50F42U_(U) 523Alphabetical Index
U
USB charging ports......................................351 V
Vanity lights.................................................... 354
Vanity mirrors ............................................... 354
Variable Gear Ratio Steering (VGRS)303
VDIM (Vehicle Dynami cs Integrated Man-
agement)...................................................... 303
Vehicle data recordings ..................................7
Vehicle Dynamics Integrated Manage-
ment (VDIM).............................................. 303
Vehicle identification number ................ 460
Vehicle Stability Control (VSC) ........... 302
Vehicle sway warning display ................... 89
Ventilators (seat ventilators)................... 336
VGRS (Variable Gear Ratio Steering)303
VSC (Vehicle Stabilit y Control) ........... 302
W
Warning buzzers
ABS .................................................................. 429
Airbags ........................................................... 428
Approach warning.................................... 256
Brake hold..................................................... 434
Brake Override System ......................... 429
Brake system ............................................... 427
Charging system ....................................... 428
Downshifting .................................................. 179
Drive-Start Control .................................. 429
Electric power steering ..........................430
Engine ............................................................. 428
High coolant temperature .................... 427
Hybrid system ............................................. 428
Intuitive parking assist...................272, 432
LKA (Lane-Keeping Assist).......240, 431
Low engine oil pressure......................... 428
LTA (Lane Tracing Assi st)......... 230, 431
Open door.............................................. 109, 111
Open window ...............................................152 PKSA (Parking Support Alert) ...........266
PKSB (Parking Support Brake) .........433
Pop Up Hood.............................................. 429
Pre-collision braking ..................... 209, 221
RCD (Rear Camera Detection) ........ 432
RCTA (Rear Cross Tra ffic Alert) ...... 432
Seat belt ............................................... 430, 431
Warning label .................................................... 61
Warning lights................................................427
ABS ................................................................... 429
Brake hold operated indicator ...........434
Brake Override System ......................... 429
Brake system................................................ 427
Charging system........................................428
Drive-Start Control................................... 429
Electric power steering.......................... 430
High coolant temperature..................... 427
Intuitive parking assist OFF indicator432
LKA indicator.................................................431
Low engine oil pressure.........................428
Low fuel level .............................................. 430
LTA indicator .................................................431
Malfunction indicator lamp ...................428
Master warning light................................. 434
Parking brake indicator ..........................434
PKSB OFF indicator ................................433
Pop Up Hood.............................................. 429
Pre-collision system..................................433
RCD OFF indicator.................................. 432
RCTA OFF indicator ............................... 432
Seat belt reminder light................ 430, 431
Slip indicator .................................................433
SRS ....................................................................428
Tire pressure ..................................................431
Warning messages ..................................... 437
Warning reflector storage belt.............. 349
Washer
Checking ........................................................ 391
Preparing and checking before winter
......................................................................... 309
Switch................................................................ 190
Washing and waxing.................................. 370