2015 Lexus IS250 warning light

4728-2. Steps to take in an emergency
IS350/250_U (OM53C50U)
Master warning light
The master warning light also comes on or flashes in order to indicate that a
message is currently being displayed on the multi-information display.
Multi-information display
If any of the warning lights come on again after the following actions have been
performed, contact your Lexus dealer.
If a warning message is displayed
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
Except F SPORT modelsF SPORT models (when the main
meter is in the center position)
F SPORT models (when the main
meter is in the right-side position)
1
2

4858-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53C50U)
*: The engine may not be restarted depending on the vehicle condition.
■Wa r n i n g m e s s a g e s
P. 4 8 1
■Warning buzzer
P. 4 6 9

Power was turned off due to the
automatic power off function.
 Next time when starting the
engine, increase the engine
speed slightly and maintain that
level for approximately 5 min-
utes to recharge the battery.
Con-
tinuous
Indicates that the engine was
stopped in an emer gency while driv-
ing
 To restart the engine, shift the
shift lever to N and turn the
engine switch to IGNITION
ON mode.
*
Once
Indicates that the engine switch has
been pressed while driving
Except when emergency stop-
ping of the vehicle is needed,
immediately release the engine
switch.
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)

4948-2. Steps to take in an emergency
IS350/250_U (OM53C50U)
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE ONLY” on the
tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare tire.
(  P. 5 1 9 )
■When using the compact spare tire
As the compact spare tire is not equipped wi th a tire pressure warning valve and trans-
mitter, low inflation pressure of the spare ti re will not be indicated by the tire pressure
warning system. Also, if you replace the compact spare tire after the tire pressure warn-
ing light comes on, th e light remains on.
■When the compact spare tire is equipped
The vehicle becomes lower when driving with the compact spare tire compared to when
driving with standard tires.
■If you have a flat rear tire on a road covered with snow or ice (vehicles with front and
rear tires of the same size)
Install the compact spare tire on one of the front wheels of the vehicle. Perform the fol-
lowing steps and fit tire chains to the rear tires:
Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the vehicle.
Fit tire chains to the rear tires.
1
2
3

562What to do if... (Troubleshooting)
IS350/250_U (OM53C50U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( P. 4 6 7 )
●The parking brake indicator is on
Is the parking brake released? ( P. 1 7 2 )
Depending on the situation, other type s of warning buzzer may also sound.
( P. 466, 472)

●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 7 1 )
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.
●Is the electronic key left inside the vehicle or the moon roof opened?
Check the message on the multi-information display. ( P. 4 7 2 )
●When a warning light turns on or a warning message is displayed, refer to
P. 4 6 6 , 4 7 2 . 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

564
IS350/250_U (OM53C50U)Alphabetical index
Alphabetical index
A/C ............................................................358
Air conditioning filter........................ 437
Automatic air conditioning system ................................................. 358
AAC disc ................................................. 295
ABS (Anti-lock Brake System)....... 240 Function ..................................................240
Warning light ...................................... 466
Accent color.............................................. 88
Adaptive Variable Suspension system ............................. 241
Air conditioning filter .......................... 437
Air conditioning system .....................358 Air conditioning filter........................ 437
Automatic air conditioning system ................................................. 358 Airbags .........................................................36
Airbag operating conditions .......... 44
Airbag precautions for your child ....................................... 39
Correct driving posture .................... 28
Curtain shield airbag operating conditions ....................... 44
Curtain shield airbag precautions ............................................ 41
Front passenger occupant classification system..........................47
General airbag precautions ........... 39
Locations of airbags............................ 36
Modification and disposal of airbags............................................... 43
Side airbag operating conditions ............................................. 44
Side airbag precautions .................... 39
Side and curtain shield airbags operating conditions ....................... 44
Side and curtain shield airbags precautions ......................... 39
SRS airbags ............................................. 36
SRS warning light .............................. 466
A

565Alphabetical index
IS350/250_U (OM53C50U)
Alarm .............................................................. 71
Anchor brackets ...................................... 58
Antennas (smart access system with push-button start) ....................... 114
Anti-lock Brake System (ABS)....... 240 Function ..................................................240
Warning light ...................................... 466
Approach warning (dynamic radar cruise control) ......................... 201
Armrest .................................................... 379
Assist grip ................................................. 381
Audio input...............................................274
Audio system.......................................... 266 Audio input............................................ 274
AUX port/USB port........................ 274
Bluetooth
® audio.................................317
CD player ..............................................295
iPod ............................................................ 301
MP3/WMA/AAC disc .................295
Optimal use ..........................................282
Portable music player ..................... 308
Radio ....................................................... 289
Steering wheel audio switch .......... 271
USB memory ...................................... 304 Automatic headlight leveling
system ...................................................... 174 Warning light ....................................... 467
Automatic High Beam ......................... 176
Automatic light control system ...................................................... 173
Automatic transmission....................... 164 If the shift lever cannot be shifted from P ............498
M mode .................................................... 167
Paddle shift switches..........................166
AUX port ................................................. 274
Average fuel economy ..........................87
Average vehicle speed..........................87

566Alphabetical index
IS350/250_U (OM53C50U)
Back-up lightsReplacing light bulbs ......................... 451
Wattage ................................................... 521
Battery....................................................... 420 Battery checking ................................420
If the vehicle battery is discharged.................................... 502
Preparing and checking before winter ................................................... 260
Warning light ...................................... 466
Bluetooth
®
Audio system .........................................317
Hands-free system (for cellular phone) ......................... 319
Bottle holders ......................................... 372
Brake Fluid............................................................ 419
Parking brake......................................... 172
Warning light ...................................... 466
Brake assist ............................................. 240
Break-in tips.............................................. 147
Brightness control Instrument panel light control .........84
BSM (Blind Spot Monitor)................ 252 Care................................................ 396, 399
Aluminum wheels .............................. 397
Exterior ................................................... 396
Interior ..................................................... 399
Seat belts............................................... 400
Cargo capacity ....................................... 156
Cargo hooks ...........................................374
CD player................................................ 295
Chains ......................................................... 261
Child restraint system ............................54 Booster seats, definition .................... 55
Booster seats, installation ................. 64
Convertible seats, definition ........... 55
Convertible seats, installation........... 61
Front passenger occupant classification system..........................47
Infant seats, definition.......................... 55
Infant seats, installation......................... 61
Installing CRS with LATCH anchors ..................... 59
Installing CRS with seat belts ........... 61
Installing CRS with top tether strap......................... 65
BC

568Alphabetical index
IS350/250_U (OM53C50U)
Daytime running light system ............ 174
DefoggerFront windshield .................................362
Outside rear view mirrors .............362
Rear window ........................................362
Differential Front differential ................................... 517
Rear differential .................................... 517
Dimension .................................................512
Dinghy towing......................................... 158
Display Drive information .................................. 87
Dynamic radar cruise control....... 196
LDA (Lane Departure Alert) ...... 209
Multi-information display ..................86
Warning message ............................. 472
Distance ...................................................... 88
Do-it-yourself maintenance ............. 409
Door courtesy lights Location ................................................. 368
Wattage ................................................... 521 Doors ..........................................................103
Automatic door locking and unlocking system ................... 106
Door glasses ......................................... 138
Door lock................................................ 105
Open door warning buzzer ..........104
Open door warning light .............. 467
Outside rear view mirrors ..............135
Rear door child-protector ............. 106
Drive information .....................................87
Drive info 1/Drive info 2 ....................... 88
Driver’s seat position memory.......... 123
Driving ........................................................ 146 Break-in tips ........................................... 147
Correct driving posture .................... 28
Driving mode select switch ...........237
Procedures .............................................146
Winter drive tips ................................ 260
Dynamic radar cruise control ........... 196
D