2010 Lexus IS250 window

446
4-3. Do-it-yourself maintenance
FuseAmpereCircuit
14RR DOOR LH20 APo w e r w i n d o w s
15FR DOOR LH20 APo w e r w i n d o w s
16SECURITY7. 5 ASmart access system with push-button
start
17H-LP LVL7. 5 AAFS
18LH-IG10 A
Charging system, headlight cleaner,
rear window defogger, electric cool-
ing fans, emergency flashers, turn sig-
nal lights, back-up lights, stop lights,
mirror heaters, sun shade, seat belts,
intuitive parking assist, cruise control,
air conditioning system, PTC heater
19FR WIP30 AWindshield wipers

448
4-3. Do-it-yourself maintenance
FuseAmpereCircuit
13FR DOOR RH20 APower windows, outside rear view
mirrors
14AM27. 5 ASmart access system with push-button
start
15RH-IG7. 5 A
Seat belts, intuitive parking assist,
automatic transmission, seat heater
and ventilator
16FR S/HTR RH15 ASeat heaters and ventilators
17ECU-IG RH10 A
Power seats, smart access system with
push-button start, AWD system, out-
side rear view mirrors, VDIM, air con-
ditioning system, pre-collision seat
belt, electric tilt and telescopic steer-
ing, power windows, navigation sys-
tem
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (P. 4 5 2 )
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.

5
When trouble arises
505
5-2. Steps to take in an emergency
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked functions
Doors
Remove the cover on the driver’s
door handle using the mechanical
key (P. 25) in order to perform
the following operations.
Locks all doors
Closes the windows/moon roof
(turn and hold)
Unlocks the door
Turning the key rearward unlocks
the driver's door. Turning the key
once again unlocks the other
doors.
Opens the windows/moon roof
(turn and hold)
Return the cover to the original
position after use.
If communication between the electronic key and vehicle is interrupted
(P. 32) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors and trunk can be
opened or the engine can be started by following the procedure below.

543
6-1. Specifications
6
Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine

565
Alphabetical index
Brake
Fluid ..........................................................408
Parking brake ........................................148
Brake assist ............................................... 196
Care
Exterior ................................................... 382
Interior.....................................................385
Seat belts ............................................... 386
Cargo capacity ..................................... 206
Cargo hooks .......................................... 360
CD changer ............................................. 241
CD player.................................................. 241
Chains ......................................................... 210
Child restraint system
Booster seats, definition...................109
Booster seats, installation ..................116
Convertible seats, definition ..........109
Convertible seats, installation .........116
Front passenger occupant
classification system .......................104
Infant seats, definition ........................109
Infant seats, installation........................116
Installing CRS with LATCH
anchors ................................................... 114
Installing CRS with seat belts ..........116
Installing CRS with top straps .........119Child safety
Airbag precautions ..............................99
Battery precautions ................... 412, 511
Child restraint system ....................... 109
Child-protectors ................................... 44
How your child should wear
the seat belt ..........................................65
Installing child restraints..................... 113
Moon roof precautions...................... 82
Power window lock switch .............. 76
Power window precautions ............ 78
Removed electronic key
battery precautions .......................435
Seat belt comfort guide ..................... 63
Seat belt extender precautions...... 67
Seat belt precautions ..........................66
Seat heater precautions..... 350, 353
Trunk precautions................................. 49
Child-protectors ...................................... 44
Cigarette lighter.................................... 346
Cleaning
Exterior....................................................382
Interior .................................................... 385
Seat belts ............................................... 386
Clock .......................................................... 341
Coat hooks ............................................. 358
Compass ..................................................369
Condenser ............................................. 408
Console box ........................................... 334
Cooling system
Engine overheating............................ 512
Cornering assist sensors .................... 190
C

566
Alphabetical index
Cruise control
Cruise control ....................................... 175
Dynamic radar cruise control ....... 179
Cup holder ..............................................336
Curtain shield airbags............................ 93
Customizable features ...................... 550
Daytime running light system ........... 166
Defogger
Rear window ........................................ 228
Side mirror ............................................ 228
Dimension ................................................520
Dinghy towing ............................... 215, 216
Display
Dynamic radar cruise control ....... 179
Satellite switch mode ....................... 342
Trip information ..................................... 161
Warning message............................ 480
Do-it-yourself maintenance .............394
Door courtesy lights
Door courtesy lights......................... 329
Wattage.................................................. 534
Door pockets......................................... 338
Doors
Door lock................................ 28, 40, 43
Door windows ....................................... 76
Side mirrors ..............................................73
Driver's seat belt reminder light ..... 473
Driving
Correct posture ...................................... 91
Procedures ............................................. 124
Driving position memory ...................... 53Electric power steering........................196
Electronic key
If the electronic key does not
operate properly............................505
Emergency, in case of
If the engine will not start .................501
If the shift lever cannot be
shifted from P................................... 503
If the vehicle has a discharged
battery ................................................. 509
If the warning buzzer sounds........ 471
If the warning light turns on............ 471
If a warning message is
displayed ............................................ 480
If you have a flat tire .........................492
If you lose your keys ........................ 504
If you think something is
wrong ...................................................467
If the electronic key does not
operate properly............................505
If your vehicle becomes stuck ...... 515
If your vehicle has to be
stopped in an emergency ........... 517
If your vehicle needs to be
towed ..................................................... 461
If your vehicle overheats.................. 512
Emergency flashers
Switch ...................................................... 460
Engine
Compartment ..................................... 400
Engine switch ........................................ 134
Hood ........................................................397
How to start the engine ................... 134
Identification number ........................ 521
If the engine will not start .................501
Ignition switch ....................................... 134
Overheating .......................................... 512
D
E

570
Alphabetical index
Parking assist sensors .......................... 190
Parking brake .......................................... 148
Parking lights
Replacing light bulbs........................ 452
Switch ....................................................... 165
Wattage.................................................. 534
PCS ............................................................202
Personal lights
Switch ........................................................331
Power outlet............................................ 347
Power windows ........................................ 76
Pre-collision system.............................202
Radar cruise control ............................. 179
Radiator ................................................... 408
Radio ..........................................................233
RDS ............................................................235
Rear sunshade .......................................355
Rear turn signal lights
Replacing light bulbs........................ 452
Wattage.................................................. 534
Rear view mirror
Compass ...............................................369
Rear window defogger.......................228
Replacing
Electronic key battery...................... 434
Fuses ........................................................ 436
Light bulbs............................................. 452
Reporting safety defects for
U.S. owners ......................................... 558Safety Connect ..................................... 373
Scuff lights................................................ 329
Seat belts
Adjusting the seat belt ........................63
Automatic locking retractor ............64
Child restraint system
installation .............................................. 113
Cleaning and maintaining
the seat belts .................................... 386
Emergency locking retractor..........64
How to wear your seat belt ............. 62
How your child should wear
the seat belt.......................................... 65
Pregnant women,
proper seat belt use .........................64
Reminder light......................................473
Seat belt extenders.............................. 65
Seat belt pretensioners ......................63
Seat heaters ..................................348, 351
Seat position memory............................ 57
Seat ventilators ....................................... 351
Seating capacity.................................... 209
Seats
Adjustment ................................................ 51
Adjustment precautions ....................52
Child seats/child restraint
system installation.............................. 113
Cleaning ................................................ 385
Driver’s seat position memory .......53
Front passenger seat position
memory .................................................. 57
Head restraint ........................................ 59
Properly sitting in the seat.................. 91
Seat heaters ...............................348, 351
Ventilated seats.................................... 351
Service reminder indicators .............157P
R
S

571
Alphabetical index
Shift lever
Automatic transmission.................... 139
If the shift lever cannot be
shifted from P ...................................503
Manual transmission .......................... 145
Shift lever lights ..................................... 329
Shift lock system ................................... 503
Shopping bag hooks ........................... 360
Side airbags ................................................93
Side marker lights
Switch ........................................................165
Side mirror
Adjusting and folding .......................... 73
Mirror position memory ................... 53
“SOS” button ..........................................373
Smart access system with
push-button start
Entry function ......................................... 28
Starting the engine.............................. 134
Spare tire
Inflation pressure ............................... 425
Storage location................................. 492
Spark plug ............................................... 525
Specifications......................................... 520
Speedometer
Speed indicator ......................................151
Speedometer ..........................................151Steering wheel
Audio switches.................................... 277
Manual adjustment...............................69
Power adjustment................................. 70
Steering wheel position
memory .................................................. 53
Storage feature......................................333
Stuck
If your vehicle becomes stuck ...... 515
Sun visors .................................................339
Sunshade
Rear.......................................................... 355
Roof............................................................. 80
Switch
ECT switch............................................. 140
Emergency flasher switch ............ 460
Engine switch ........................................ 134
ETCS switch .......................................... 146
Fog light switch .................................... 168
Hazard light switch .......................... 460
Ignition switch ....................................... 134
Light switches ....................................... 165
Power door lock switch .................... 43
Power window switch ........................ 76
Satellite switches................................. 342
Transmission shift switches .............142
Window lock switch............................ 76
Wiper and washer switch............... 169