
2344-3. Operating the lights and wipers
IS300h_EE(OM53D56E)
■The Automatic High Beam can be operated when
The power switch is in ON mode.
■Camera sensor detection information
●High beam may not be automatically turned off in the following situations:
• When oncoming vehicles suddenly appear from a curve
• When the vehicle is cut in front of by another vehicle
• When oncoming or preceding vehicles are hidden from sight due to repeatedcurves, road dividers or roadside trees
●High beam may be turned off if an oncomi ng vehicle that is using fog lights without
using the headlights is detected.
●House lights, street lights, red traffic sign als, and illuminated billboards or signs may
cause the high beam to turn off.
●The following factors may affect the amount of time taken to turn high beam on or off:
• The brightness of headlights, fog lights, and tail lights of oncoming and preceding
vehicles
• The movement and direction of oncoming and preceding vehicles
• When an oncoming or preceding vehicle only has operational lights on one side
• When an oncoming or preceding vehicle is a two-wheeled vehicle
• The condition of the road (gradient, curve, condition of the road surface etc.)
• The number of passengers and amount of luggage
●High beam may be turned on or off when unexpected by the driver.
●Small vehicles, such as bicycles, may not be detected.
●In the situations below, the system may not be able to correctly detect the surrounding
brightness levels, and may flash or expose nearby pedestrians to the high beam. There-
fore, you should consider turning the high be ams on or off manually rather than relying
on the Automatic High Beam system.
• In bad weather (rain, snow, fog, sandstorms etc.)
• The windshield is obscured by fog, mist, ice, dirt etc.
• The windshield is cracked or damaged.
• The camera sensor is deformed or dirty.
• Surrounding brightness levels are equal to th ose of headlights, tail lights or fog lights.
• Vehicles ahead have headlights or tail lights that are either switched off, dirty, chang-
ing color, or have improperly adjusted aim.
• When driving through an area of intermittently changing brightness and darkness.
• When frequently and repeatedly driving ascending/descending roads, or roads with
rough, bumpy or uneven surfaces (such as stone-paved roads, gravel tracks etc.).
• When frequently and repeatedly taking curves or driving on a winding road.
• There is a highly reflective object ahead of the vehicle, such as a sign or a mirror.
• The vehicle’s headlights are damaged or dirty.
• The vehicle is listing or titling, due to a flat tire, a trailer being towed etc.
• The driver believes that the high beam may be causing problems or distress to other drivers or pedestrians nearby.
• The vehicle is used in a territory in which vehicles travel on the opposite side of the
road of the country for which the vehicle is approved, for example using a vehicle
designed for right-hand traffic in a left-hand traffic territory, or vice versa.

2354-3. Operating the lights and wipers
4
Driving
IS300h_EE(OM53D56E)
CAUTION
■Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Always drive safely, taking care to observe
your surroundings and turning high beam on or off manually if necessary.
NOTICE
■Notes when using the Automatic High Beam system
●Do not touch the camera sensor.
●Do not subject the camera sensor to a strong impact.
●Do not disassemble the camera sensor.
●Do not spill liquid onto the camera sensor.
●Do not apply window tinting or stickers to the camera sensor or the area of wind-
shield near the camera sensor.
●Do not place items on the dashboard. There is a possibility that the camera sensor will
mistake items reflected in the windshield for streetlights, the headlights of other vehi-
cles, etc.
●Do not install a parking tag or any other accessories near or around the camera sen-
sor.
●Do not overload the vehicle.
●Do not modify the vehicle.
●Do not replace windshield with non-genuine windshield.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Observe the following to ensure that the Auto-
matic High Beam functions correctly.

5358-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D56E)
Indicates a malfunction in the brake override systemA buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that engine oil level is low
A buzzer also sounds.
→ Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated
This message may be displayed when driving under
severe operating conditions. (For example, when driv-
ing up a long steep hill.)
A buzzer also sounds.
→ Stop and check. ( →P. 5 7 1 )
Indicates a malfunction in:
• The automatic headlight leveling system; or
• The Automatic High Beam system (if equipped)
• The LED headlight system (if equipped)
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the accelerator and brake pedal are being
depressed simultaneously
→Release the accelerator or brake pedal.
Maintenance of the hybrid battery (traction battery)
cooling component is required
The filter may be clogged, the air intake vent may be
blocked or there may be a gap in the duct
→ Have maintenance performed on the hybrid battery
(traction battery) cooling component by any autho-
rized Lexus dealer or repairer, or another duly qual-
ified and equipped professional.
Indicates that the washer fluid level is low
→Add washer fluid.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

5368-2. Steps to take in an emergency
IS300h_EE(OM53D56E)
Indicates that remaining fuel is approximately 10 L (2.6
gal., 2.2 Imp. gal.) or less
→Refuel the vehicle.
Indicates that the TRC (Tr action Control) system has
been deactivated
→ Tu r n t h e T R C o n . ( →P. 2 9 8 )
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message
has been reset.)
→ Check the engine oil, and change if necessary.
After changing the engine oil, the message should
be reset.
Indicates that the engine oil should be changed. (After
the engine oil is changed and the message has been
reset.)
→Check and change the engine oil, and oil filter by
any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional. After
changing the engine oil, the message should be
reset.
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
→ Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-crash brake system oper-
ation is stopped
→Tu r n t h e V S C o n . ( →P. 2 9 8 )
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is not
currently functional because the grille cover or the sen-
sor is dirty
→ Check the grille cover and the sensor and clean
them if they are dirty.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

609Alphabetical index
IS300h_EE(OM53D56E)
Airbag manual on-off system ............. 54
Alarm ............................................................ 96
Anchor brackets ...................................... 69
Antennas (smart entry & start system) ......................................... 149
Anti-lock Brake System (ABS) ....... 296
Function ..................................................296
Warning light ....................................... 522
Approach warning ...............................259
Armrest ..................................................... 437
ASC (Active Sound Control).......... 228
Assist grips ..............................................439
Audio input ..............................................335
Audio system ..........................................328 Audio CD player ...............................354
Audio input ...........................................335
AUX port/USB port ............................................335
Bluetooth
® audio ..............................378
iPod.............................................................361
Optimal use .......................................... 344
Portable music player......................369
Radio ........................................................ 352
Steering wheel audio switch ........ 334
USB memory....................................... 364 Automatic headlight leveling
system ..................................................... 231
Warning light....................................... 523
Automatic High Beam ...................... 232
Automatic light control system ...... 229
AUX port................................................. 335
Average fuel economy ......................... 116
Average vehicle speed ......................... 116
Back-up light Replacing light bulb ......................... 502
Wattage ................................................ 588
Battery (12-volt battery) .................... 463
If the 12-volt battery is discharged ........................................ 566
Preparing and checking before winter.....................................322
Warning light......................................... 521
Battery (traction battery) ..................... 83
Blind Spot Monitor (BSM) ............... 310
Blower customization...........................419
Bluetooth
®
Audio system....................................... 378
Hands-free system (for cellular phone) .......................380
Bottle holders......................................... 430
B

615Alphabetical index
IS300h_EE(OM53D56E)
Fuel ............................................................. 246Capacity ................................................ 580
Fuel gauge.............................................. 109
Information ........................................... 589
Refueling ................................................ 246
Type ............................................. 246, 580
Warning light ....................................... 523
Fuel consumption .................................. 124
Average fuel economy ...................... 116
Current fuel consumption................ 116
Fuel filler door ........................................ 246 If the fuel filler door
cannot be opened .........................248
Refueling ................................................ 246
Fuel gauge ................................................ 109
Fuses ........................................................... 491
Gauges ...................................................... 109
Glove box ................................................ 429
Glove box light ...................................... 429 Hands-free system
(for cellular phone) ...........................380
Head restraints ........................................ 174
Headlight cleaner................................. 238
Headlights ............................................... 229
Automatic High Beam system...................................................232
Discharge headlights precautions ...................................... 508
Follow me home system................ 230
Light switch............................................229
Replacing light bulbs ....................... 507
Wattage ................................................ 588
Heaters .......................................................412 Air conditioning system ................... 412
Heated steering wheel ....................423
Outside rear view mirrors .............. 418
Seat heaters...........................................424
Hill-start assist control........................ 296
High-voltage components .................. 83
Hood .......................................................... 453
Open ....................................................... 453
Pop Up Hood ........................................ 56
G
H

618Alphabetical index
IS300h_EE(OM53D56E)
LightsAutomatic High Beam
system .................................................. 232
Fog light switch ................................... 236
Follow me home system ................230
Headlight switch................................. 229
Illuminated entry system................. 426
Interior light ........................................... 426
Interior lights list .................................. 425
Personal lights ..................................... 426
Replacing light bulbs........................ 497
Trunk light ................................................146
Turn signal lever ................................. 225
Vanity lights .......................................... 435
Wattage................................................. 588
Lock steering column .......................... 215
Low profile tire ....................................... 470
Luggage security system .................... 145
Luggage under tray .............................433 Maintenance
Do-it-yourself maintenance ........... 451
Maintenance data ............................. 578
Maintenance requirements .......... 449
Maintenance system .............................. 117
Malfunction indicator lamp ................521
Master warning light ........................... 523
Meter Changing the display ............................111
Indicators .................................................106
Instrument panel li ght control ......... 112
Meters .......................................................109
Multi-information display...................115
Warning lights ......................................105
Mirrors
Inside rear view mirror ..................... 179
Outside rear view mirror defoggers ............................................ 418
Outside rear view mirrors ............... 181
Vanity mirrors ..................................... 435
MirrorLink ........................................... 404
MMS (Multimedia messaging service) ..................................................388M

622Alphabetical index
IS300h_EE(OM53D56E)
Seats, Front............................................... 165Adjustment............................................. 165
Adjustment precautions .................. 166
Child seats/child restraint
system installation ............................. 69
Cleaning................................................. 446
Driving position memory ................ 169
Head restraints...................................... 174
Power easy access system ............ 169
Properly sitting in the seat ................ 36
Seat heaters .......................................... 424
Seat position memory ...................... 169
Seat ventilators .................................... 424
Seats, Rear.................................................167
Fold down the seatback ...................167
Luggage security system.................145
Sensor Automatic headlight system.........230
Automatic High Beam system.... 235
Inside rear view mirror..................... 180
Intrusion sensor and tilt sensor ...... 99
LDA (Lane Departure Alert)....... 270
Lexus parking assist-sensor ......... 276
Radar sensor ................. 262, 303, 314
Rain-sensing windshield wipers................................................... 244 Service plug ............................................... 83
Service reminder indicators ............. 104
S-FLOW mode ....................................... 414
Shift lever ................................................... 219
Hybrid transmission ........................... 219
If the shift lever cannot be shifted from P................................... 562
Shift lock system ................................... 562
Shift position and shift range............. 109
Side airbags ............................................... 43
Side mirrors ............................................... 181 Adjusting and folding ......................... 181
BSM (Blind Spot Monitor) .............310
Linked mirror function when
reversing ..............................................183
Mirror position memory .................. 169
Side turn signal lights .......................... 225 Replacing light bulbs ....................... 507
Turn signal lever..................................225
Side windows .......................................... 185
Slip indicator........................................... 522
Smart entry & start system .................149
Antenna location ................................. 149
Entry functions ............................136, 143
Starting the hybrid system .............. 212
SMS (Short message service).........388