4327-2. Steps to take in an emergency
LS500h_OM_(U)_1809If 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.439
If none of the tires are punctured:
Turn the power switch off then turn it to ON
mode. Check if the tire 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.398)
■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.395
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.
5191-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809519Alphabetical Index
Spark plug ........................................................461
Specifications ................................................ 458
Speedometer ............................................ 81, 85
Steering lock Column lock release....................................171
Steering lock system warning message.............................................................................171
Steering wheel Adjustment..................................................... 150
Heated steering wheel............................ 337
Meter control switches ................................ 91
Power easy access system ..................... 142
Steering wheel position memory ........ 142
Stop lights Replacing light bulbs.................................. 414
Storage features .......................................... 345
Stuck If the vehicle becomes stuck................ 454
Suggestion function....................................... 95
Sun visors ........................................................ 356
Sunshade Roof .................................................................... 157
Switches Activating the Automatic High Beam190
Automatic High Beam system............. 190
Brake Hold switch ..................................... 185
Door lock switches .......................................114
Driving mode select switch .................. 297
Driving position memory switches ..... 142
Dynamic radar cruise control with full-speed range switch ....................... 246
Emergency flashers switch .....................416
EV drive mode switch .............................. 174
Garage door opener switches ..........360
Heated steering wheel switch............. 337
HUD (Head-up display) switch............ 98
Ignition switch................................................170
Instrument panel light control switches ...................................................................83, 89
Intuitive parking assist switch............... 266
Light switches ................................................187
LTA (Lane-Tracing Assist) switch .... 239 Meter control switches ................................91
Moon roof switches................................... 156
“ODO TRIP” switch .......................... 83, 89
Outside rear view mi
rror switches .... 152
Paddle shift switches ........................ 180, 181
Parking brake switch................................. 183
PCS OFF switch ..............................215, 225
PKSB (Parking Support Brake) switch .......................................................................... 279
Power door lock switch ............................ 114
Power switch................................................. 170
Power window switches ......................... 154
RCD (Rear camera detection) switch .......................................................................... 275
RCTA switch ................................................ 272
Rear door sunshade switch ..................357
Rear seat heater..........................................335
Rear seat position memory switches 146
Rear seat ventilator ...................................335
Rear sunshades switch........................... 358
Rear window and outside rear view mir- ror defoggers switch ............................ 323
Seat heater switches................................. 337
Seat ventilator switches .......................... 337
Snow mode switch......................................179
“SOS” button...................................................58
Tilt and telescopic steering control switch ........................................................................... 150
Tire pressure warning reset switch.. 398
Trunk closer switch .................................... 120
Trunk opener main switch....................... 122
Trunk opener switch ................................... 118
Vehicle-to-vehicle distance switch... 246
VSC OFF switch ...................................... 303
Window lock switch.................................. 156
Windshield wiper and washer switch192
Windshield wiper de-icer switch.......328
T
Tachometer................................................ 81, 85 Rev indicator ................................................... 87
Rev peak............................................................ 87
