
347
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)
■When replacing the front left headlight and parking light bulbs
■Condensation build-up on the inside of the lens
Contact your Lexus dealer for more information in the following situations. Tempo-
rary condensation build-up on the inside of the headlight lens does not indicate a
malfunction.
●Large drops of water are built up on the inside of the lens.
●Water has built up inside the headlight.
■Discharge headlights (if equipped)
If voltage to the discharge bulbs is insufficient, the bulbs may not come on, or may
go out temporarily. The discharge bulbs will come on when normal power is
restored. Remove the securing bolt and move the
washer fluid filler opening to allow easy
access to the light bulbs.
After replacing the bulbs, make sure to
secure the washer fluid filler opening with the
bolt.

374
5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0708)
Wa r n i n g m e s s a g eDetailsCorrection procedure
Indicates that the trunk is
not fully closed. flashes and a
buzzer sounds to indi-
cate that trunk is not fully
closed (with the vehicle
having reached a speed
of 3 mph [5 km/h]).
Close the trunk.
(Flashing)
Indicates that the moon
roof is not fully closed
(with the “ENGINE
START STOP” switch
OFF and the driver’s
door opened).
Close the moon roof.
Indicates that the parking
brake is still engaged.
flashes and a
buzzer sounds to indi-
cate that the parking
brake is still engaged
(with the vehicle having
reached a speed of 3
mph [5 km/h]).
Release the parking
brake.
Indicates that the washer
fluid level is low.Add washer fluid.

440
6-2. Customization
08_IS350/250_U_(L/O_0708)
Multi-information display (→P. 139)
ItemFunctionDefault settingCustomized
setting
Windshield
wipers and
washer
(
→P. 1 4 7 )
Switching operation when
the vehicle is stationaryOnOff
Drip prevention functionOnOff
Ti m e e l a p s e d b e f o r e t h e
drip prevention function
operatesVa r i a b l e
depending on
the vehicle
speed
3 seconds
Intuitive park-
ing assist
(
→P. 1 6 4 )
Back sensor operation
display and buzzerOnOff
Buzzer volumeLevel 3Level 1 to 5
Distance which a sensor
detects150 cm (4.9 ft.)60 cm (2.0 ft.)
Illumination
(
→P. 2 3 1 )
Time elapsed before lights
turn off15 seconds7. 5 s e c o n d s
30 seconds
Operation when the
doors are unlockedOnOff
Operation after the
“ENGINE START STOP”
switch turned OFF
OnOff
Front foot well lightingOnOff
Shift lever lightingOnOff
Outer foot lightOnOff
CountryAvailable language
CanadaEnglish and French

451
Alphabetical index
08_IS350/250_U_(L/O_0708)
Engine coolantCapacity.....................................................411
Checking ............................................... 299
Preparing and checking
before winter......................................183
Engine coolant temperature
gauge .......................................................130
Engine immobilizer system .................. 72
Engine oil Capacity...................................................410
Checking ............................................... 295
Preparing and checking
before winter......................................183
Engine oil maintenance data ........... 298
EPS............................................................... 170
Event data recorder ............................ 358
First-aid kit storage belt....................... 261
Floor mat.................................................. 260
Fluid
Brake .........................................................301
Washer ...................................................305
Fog lights Switch ........................................................ 146
Wattage ................................................. 420
Foot well lighting .................................... 231
Front fog lights Switch ........................................................ 146
Wattage ................................................. 420
Front passenger occupant
classification system ........................... 90
Front passenger's seat belt
reminder light ......................................362 Front seats
Adjustment ............................................... 44
Driving position memory .................. 46
Seat position memory ........................ 49
Front turn signal lights Switch........................................................ 128
Wattage..................................................420
Fuel
Capacity ................................................ 409
Fuel gauge.............................................. 130
Fuel pump shut off system............. 357
Gas station information ................. 460
Information ..............................................421
Refueling....................................................69
Fuel door ..................................................... 69
Fuel filler door ........................................... 69
Fuel pump shut off system ................. 357
Fuses .......................................................... 327
Garage door opener .......................... 264
Gas station information......................460
Gauges ...................................................... 130
Glove box ................................................ 236
Glove box light ...................................... 237
Head restraints Adjusting ....................................................51
Headlight aim .......................................... 341
Headlight cleaner ....................................151
F
G
H

455
Alphabetical index
08_IS350/250_U_(L/O_0708)
Sun visors..................................................242
SunshadeRear .......................................................... 256
Roof ..............................................................67
Switch ECT switch ............................................. 123
Engine switch .......................................... 117
ETCS switch .......................................... 126
Fog light switch..................................... 146
Ignition switch.......................................... 117
Light switches........................................ 143
Power door lock switch .....................37
Power window switch.........................64
Satellite switches ................................ 245
Transmission shift switches ............ 124
Window lock switch ............................64
Wipers and washer switch............. 147
Tachometer Tacho indicator ....................................130
Tachometer ............................................130
Tail lights
Switch ........................................................ 143
Talk switch*
Telephone switch*
Theft deterrent system
Alarm ........................................................... 74
Engine immobilizer system .............. 72
Theft prevention labels .......................... 76
Tire inflation pressure........................... 316
Tire information Glossary ................................................ 429
Size ........................................................... 426
Tire identification number ............. 426
Uniform tire quality grading..........427 Tires
Chains ...................................................... 183
Checking .............................................. 306
If you have a flat tire ..........................382
Inflation pressure ................................. 316
Inflation pressure sensor ............... 308
Information ............................................ 424
Replacing ...............................................382
Rotating tires ....................................... 306
Size............................................................. 415
Snow tires ............................................... 183
Tools ...........................................................382
Total load capacity ................................ 182
Towing
Dinghy towing ...........................188, 189
Emergency towing........................... 350
Trailer towing ........................................ 187
TRAC.......................................................... 170
Traction control ...................................... 170
Transmission shift switches ................ 124
Trip meter ................................................. 130
Trunk
Extending a space ............................ 258
Opener ........................................................ 41
Trunk light Trunk light ................................................. 42
Wattage ..................................................420
Turn signal lights
Replacing light bulbs ........................ 342
Switch........................................................ 128
Wattage ..................................................420
T
*: Refer to the “Navigation System Owner’s Manual”

456
Alphabetical index
08_IS350/250_U_(L/O_0708)
Vanity lightsVanity lights .......................................... 243
Wattage.................................................. 420
Vanity mirrors ........................................ 243
VDIM .......................................................... 170
Vehicle dynamics integrated
management ........................................ 170
Vehicle identification number .........407
Vehicle stability control....................... 170
Ventilators ...............................................253
VSC ............................................................. 170
Warning buzzers Brake system .......................................360
Open door .......................................... 362
Seat belt reminder............................. 362
Warning lights Anti-lock brake system.....................361
Brake assist system.............................361
Brake system .......................................360
Charging system .................................361
Electric power steering
warning light .......................................361
Low fuel level ....................................... 362
Malfunction indicator lamp.............361
Master warning light ........................ 362
Open door ........................................... 362
Pre-collision system ...........................361
Pretensioners.........................................361
Seat belt reminder light .................. 362
SRS airbags ............................................361
Tire pressure warning
light ........................................................ 362 Warning messages
AWD system....................................... 370
Dynamic radar cruise control ....................... 370, 373
Engine oil level.....................................373
Engine oil maintenance...................373
Engine oil pressure........................... 369
Hill-start assist control ..................... 372
Hood ........................................................373
Intuitive parking assist ......... 370, 373
Moon roof..............................................373
Open door ............................................373
Parking brake.......................................373
Pre-collision system............. 370, 373
Smart access system with push-button start ........................... 378
Steering lock........................................ 370
Tire pressure warning system ................... 370, 373
Traction control...................................372
Trunk.........................................................373
Vehicle stability control................... 372
Washer fluid .........................................373
Washer
Checking............................................... 305
Preparing and checking before winter...................................... 183
Switch ........................................................ 147
Washing and waxing............................274
Weight Cargo capacity .................................... 179
Load limits............................................... 182
Weight .................................................... 406V
W

457
Alphabetical index
08_IS350/250_U_(L/O_0708)
Wheels ..................................................... 320
Window glasses .......................................64
Window lock switch................................64
WindowsPower windows .....................................64
Rear window defogger ..................200
Washer ..................................................... 147
Windshield wipers ................................. 147
Wireless remote control key Replacing the battery ...................... 325
WMA disc................................................. 217