seats Lexus IS250 2015 TIPS FOR THE NAVIGATION SYSTEM / LEXUS 2015 IS250/350 (OM53C50U) Owner's Guide

3666-1. Using the air conditioning system
IS350/250_U (OM53C50U)
Turn the heated steering wheel on/off
The indicator light comes on when the
heated steering wheel is operating.
The heated steering wheel will automat-
ically turn off after about 30 minutes.
Heated steering wheel/seat heaters/seat ventila-
tors


: If equipped
Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively. Seat ventilators maintain good airflow by blow-
ing air from the seats.
CAUTION
●Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel or seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (s leeping drugs, cold
remedies, etc.)
●Observe the following precautions to prevent the minor burns or overheating
• Do not cover the seat with a blanket or cushion when using the seat heater.
• Do not use seat heater more than necessary.
NOTICE
●Do not put heavy objects that have an uneven surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat.
●To prevent battery discharge, do not use the functions when the engine is off.
Heated steering wheel

4017-1. Maintenance and care
7
Maintenance and care
IS350/250_U (OM53C50U)
NOTICE
■Cleaning detergents
●Do not use the following types of detergent, as they may discolor the vehicle interior
or cause streaks or damage to painted surfaces:
• Non-seat portions: Organic substances such as benzene or gasoline, alkaline oracidic solutions, dye, and bleach
• Seats: Alkaline or acidic solutions, su ch as thinner, benzene, and alcohol
●Do not use polish wax or polish cleaner. The instrument panel’s or other interior part’s
painted surface may be damaged.
■Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of leather
surfaces:
●Remove any dust or dirt from leather surfaces immediately.
●Do not expose the vehicle to direct sunlight for extended periods of time. Park the
vehicle in the shade, especially during summer.
●Do not place items made of vinyl, plastic, or containing wax on the upholstery, as they
may stick to the leather su rface if the vehicle interior heats up significantly.
■Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes into contact
with electrical components such as the au dio system above or under the floor of the
vehicle. Water may also cause the body to rust.
■When cleaning the inside of the windshield (vehicles with LDA [Lane Departure
Alert])
Be careful not to touch the camera sensor ( P. 2 0 8 ) .
If the camera is accidentally scratched or hit, LDA may not operate properly or may
cause a malfunction.
■Cleaning the inside of the rear window
●Do not use glass cleaner to clean the rear window, as this may cause damage to the
rear window defogger heater wires or antenna. Use a cloth dampened with luke-
warm water to gently wipe the window cl ean. Wipe the window in strokes running
parallel to the heater wires or antenna.
●Be careful not to scratch or damage the heater wires or antenna.

4067-2. Maintenance
IS350/250_U (OM53C50U)
Vehicle interior
ItemsCheck points
Accelerator pedal• The accelerator pedal should move smoothly (with- out uneven pedal effort or catching).
Automatic transmission
“Park” mechanism• When parked on a slope and the shift lever is in P, isthe vehicle securely stopped?
Brake pedal
• Does the brake pedal move smoothly?
• Does the brake pedal have appropriate clearance
from the floor? ( P. 5 1 8 )
• Does the brake pedal have the correct amount of
free play? ( P. 5 1 8 )
Brakes
• The vehicle should not pull to one side when the
brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the brakes are applied.
Head restraints• Do the head restraints move smoothly and lock
securely?
Indicators/buzzers• Do the indicators and buzzers function properly?
Lights• Do all the lights come on?
Parking brake
• Moves smoothly?
• When parked on a slope and the parking brake is on,is the vehicle securely stopped?
Seat belts•Do the seat belt s operate smoothly?
• The seat belts should not be damaged.
Seats• Do the seat controls operate properly?
Steering wheel
• Does the steering wheel rotate smoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be an y strange sounds coming
from the steering wheel.

5329-1. Specifications
IS350/250_U (OM53C50U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire 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 un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in excess of those standard items
which may be replaced) of automatic transmission,
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)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1
* below
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

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

570Alphabetical index
IS350/250_U (OM53C50U)
Emergency flashers ............................. 456
Engine .........................................................514ACCESSORY mode....................... 160
Compartment....................................... 413
Engine switch ........................................ 159
Hood ........................................................... 411
How to start the engine ................... 159
Identification number ........................ 513
If the engine will not start............... 496
Ignition switch (engine switch)..... 159
Overheating ........................................ 506
Engine coolant......................................... 417 Capacity .................................................. 516
Checking..................................................417
Preparing and checking before winter ................................... 260
Engine coolant temperature gauge ..........................................................81
Engine immobilizer system ................. 69
Engine oil ...................................................414 Capacity .................................................. 514
Checking................................................. 414
Preparing and checking before winter ................................... 260
Engine switch .......................................... 159
Enhanced VSC ..................................... 240
EPS (Electronic Power Steering) ..........241 Function ....................................................241
Warning light ....................................... 467
Event data recorder (EDR) ...................10 First-aid kit storage belt......................374
Flat tire ...................................................... 486
Floor mats....................................................26
Fluid
Automatic transmission .................... 517
Brake......................................................... 518
Washer ................................................... 422
Fog lights..................................................... 181 Replacing light bulbs ....................... 452
Switch ......................................................... 181
Wattage ................................................... 521
Footwell light .......................................... 368 Wattage ................................................... 521
Front passenger occupant classification system ............................ 47
Front personal lights ........................... 369 Wattage ................................................... 521
Front seats ................................................. 120 Adjustment..............................................120
Cleaning................................................. 399
Correct driving posture .................... 28
Driving position memory................. 123
Head restraints .....................................128
Power easy access system ............. 123
Seat heaters .......................................... 367
Seat position memory ....................... 123
Seat ventilators.................................... 367F

576Alphabetical index
IS350/250_U (OM53C50U)
Radar cruise control (dynamic radar cruise control) ..........................196
Radiator ..................................................... 418
Radio.......................................................... 289
Rear personal lights............................. 369 Wattage ................................................... 521
Rear seats ................................................... 121 Fold down the seatback .................... 121
Luggage security system .................. 110
Rear sunshade ....................................... 379 Operation ..............................................379
Reverse operation feature.............379
Rear turn signal lights ...........................170 Replacing light bulbs ........................449
Turn signal lever .................................. 170
Wattage ................................................... 521
Rear view mirror Inside rear view mirror ..................... 133
Outside rear view mirrors .............. 135 Rear window defoggers .....................362
Refueling................................................... 188
Capacity...................................................514
Fuel types.................................................514
If the fuel filler door cannot be opened .......................... 190
Opening the fuel tank cap ............. 190
Remote Touch
*
Replacing Electronic key battery ..................... 439
Fuses .......................................................... 441
Light bulbs............................................. 444
Tires ..........................................................486
Reporting safety defects for U.S. owners .................................. 548
Reset the maintenance data ............ 403
Rev indicator ............................................. 88
Rev peak ..................................................... 88
R

577Alphabetical index
IS350/250_U (OM53C50U)
Seat belt reminder light...................... 467
Seat belts..................................................... 30Adjusting the seat belt ..........................31
Automatic Locking Retractor......... 32
Child restraint system installation ................................................61
Cleaning and maintaining the seat belt ...................................... 400
Emergency Locking Retractor ................................................ 32
How to wear your seat belt .............30
How your child should wear the seat belt .......................................... 32
Pregnant women, proper seat belt use.......................................... 33
Reminder light and buzzer ........... 467
Seat belt extender................................. 32
Seat belt pretensioners ........................31
SRS warning light.............................. 466
Seat heaters ............................................ 367
Seat position memory...........................123
Seat ventilators ...................................... 367
Seating capacity......................................156 Seats, Front ............................................... 120
Adjustment..............................................120
Adjustment precautions...................120
Child seats/child restraint system installation ............................. 58
Cleaning................................................. 399
Driving position memory................. 123
Head restraints .....................................128
Power easy access system ............. 123
Properly sitting in the seat ................ 28
Seat heaters .......................................... 367
Seat position memory ....................... 123
Seat ventilators.................................... 367
Seats, Rear ..................................................121 Fold down the seatback.....................121
Luggage security system.................. 110
Sensor Automatic headlight system .......... 174
Automatic High Beam system .... 180
Inside rear view mirror...................... 134
Intuitive parking assist........................ 214
LDA (Lane Departure Alert).......208
Radar sensor................ 203, 247, 254
Rain-sensing windshield wipers.................................................... 186
Service reminder indicators ................ 76
S
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.