flat tire Lexus IS250C 2014 Workshop Manual

582
6-1. Specifications
IS250C/350C_U
Bead
The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separationA breakdown of the bond between components in
the bead
Bias ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at alternate angles substantially
less than 90 degrees to the centerline of the tread
CarcassThe tire structure, except tread and sidewall rubber
which, when inflated, bears the load
ChunkingThe breaking away of pieces of the tread or sidewall
CordThe strands forming the plies in the tire
Cord separationThe parting of cords from adjacent rubber com-
pounds
CrackingAny parting within the tread, sidewall, or innerliner of
the tire extending to cord material
CT
A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit
on the underside of the rim in a manner that encloses
the rim flanges inside the air cavity of the tire
Extra load tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the inside surface of a tubeless
tire that contains the inflating medium within the tire
Innerliner separationThe parting of the innerliner from cord material in the
carcass
Tire related termMeaning

583
6-1. Specifications
6
Vehicle specifications
IS250C/350C_U
Intended outboard side-
wall
(a) The sidewall that contains a whitewall, bears white lettering, or bears manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of an asymmetrical
tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressureThe maximum cold inflation pressure to which a tire
may be inflated
Measuring rimThe rim on which a tire is fitted for physical dimension
requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to
labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10000 lb. or
less.
PlyA layer of rubber-coated parallel cords
Tire related termMeaning

584
6-1. Specifications
IS250C/350C_U
Ply separationA parting of rubber compound between adjacent
plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fab-
ric and steel or other materials, that, when mounted
on an automotive wheel, provides the traction and
contains the gas or fluid that sustains the load
Radial ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at substantially 90 degrees to the
centerline of the tread
Reinforced tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width
The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe parting of the rubber compound from the cord
material in the sidewall
Snow tire
A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard
Reference Test Tire, when using the snow traction test
as described in ASTM F-1805-00, Standard Test
Method for Single Wheel Driving Traction in a
Straight Line on Snow-and Ice-Covered Surfaces,
and which is marked with an Alpine Symbol (
)
on at least one sidewall
Te s t r i mThe rim on which a tire is fitted for testing, and may be
any rim listed as appropriate for use with that tire
Tire related termMeaning

590
IS250C/350C_U
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Maintenance data
(U.S.A. only)After the maintenance is performedP. 4 0 5
Ti r e p r e s s u r e w a r n i n g
system
• When changing the tire inflation pressure by changing traveling
speed.
•When changing the tire size.
P. 4 3 1
The following item must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

613
Alphabetical index
IS250C/350C_U
Electric power steering ....................... 214
Electronic keyIf the electronic key does not operate properly ............................ 528
Emergency, in case of If a warning message is
displayed ........................................... 500
If the electronic key does not
operate properly ............................ 528
If the engine will not start ............... 524
If the retractable hardtop does not close .................................540
If the shift lever cannot be shifted from P ................................... 526
If the vehicle has a discharged battery.................................................. 532
If the warning buzzer sounds........ 491
If the warning light turns on ............ 491
If you have a flat tire ..........................513
If you lose your keys .........................527
If you think something is wrong................................................... 489
If your vehicle becomes stuck .... 539
If your vehicle has to be stopped in an emergency .........550
If your vehicle needs to be
towed ................................................... 483
If your vehicle overheats................ 536
Emergency flashers Switch ...................................................... 482 Engine
Compartment....................................... 416
Engine switch ......................................... 147
Hood ......................................................... 413
How to start the engine ....................147
Identification number ...................... 553
If the engine will not start................524
Ignition switch ........................................ 147
Overheating ........................................ 536
Engine compartment cover .............. 418
Engine coolant Capacity ................................................ 559
Checking ............................................... 423
Preparing and checking
before winter ....................................233
Engine coolant temperature
gauge......................................................... 161
Engine immobilizer system..................98
Engine oil Capacity ................................................ 556
Checking ...............................................420
Preparing and checking
before winter ....................................233
EPS .............................................................. 214
Event data recorder ............................... 22E
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

619
Alphabetical index
IS250C/350C_U
Side mirrorAdjusting and folding ..........................79
Mirror position memory ..................... 61
Smart access system with
push-button startEntry function ..........................................32
Starting the engine.............................. 147
“SOS” button ......................................... 388
Spare tire Inflation pressure ................................. 441
Storage location...................................513
Spark plug ............................................... 560
Specifications......................................... 552
Speedometer
Speed indicator ......................................161
Speedometer ..........................................161
Steering wheel Adjustment ...............................................76
Audio switches ...................................300
Steering wheel position
memory ................................................... 61
Storage feature ..................................... 356 Stuck
If your vehicle becomes stuck .... 539
Sun visors .................................................363
Switch All window control switch ................ 82
ECT switch............................................. 152
Emergency flasher switch .............482
Engine switch ......................................... 147
Fog light switch ....................................180
Hazard light switch ...........................482
Ignition switch ........................................ 147
Light switches ........................................176
Power door lock switch .................... 47
Power window switch ........................ 82
Roof switch...............................................86
Satellite switches................................ 366
Transmission shift switches ..................................... 153, 155
VSC off switch ......................................216
Window lock switch............................83
Wiper and washer switch............... 182

620
Alphabetical index
IS250C/350C_U
TachometerTacho indicator...................................... 161
Tachometer ............................................. 161
Tail lights
Switch ........................................................ 176
Talk switch* ............................................. 326
Telephone switch*................................ 326
Theft deterrent system
Alarm ........................................................ 100
Engine immobilizer system ............. 98
Theft prevention labels ........................ 103
Tire inflation pressure .......................... 441
Tire information Glossary................................................. 579
Size ........................................................... 576
Tire identification number ............. 575
Uniform tire quality grading ......... 577
Tires
Chains ..................................................... 233
Checking ................................................. 431
If you have a flat tire............................513
Inflation pressure.................................. 441
Inflation pressure sensor................ 432
Information............................................ 573
Replacing.................................................513
Rotating tires .......................................... 431
Run-flat tire............................................ 522
Size ...........................................................563
Snow tires .............................................. 233
Spare tire..................................................513
Tools ............................................................ 513
Total load capacity ............................... 232 Towing
Dinghy towing .................................... 238
Emergency towing ........................... 483
Trailer towing ....................................... 237
TRAC ..........................................................214
Traction control.......................................214
Transmission shift switches...... 153, 155
Trip meter ................................................... 161
Trunk Opener ....................................................... 51
Trunk light Trunk light ................................................. 52
Wattage ................................................. 568
Turn signal lights
Replacing light bulbs ....................... 468
Switch........................................................158
Wattage ................................................. 568
USB port* ................................................ 287
Vanity lights Vanity lights.......................................... 364
Wattage ................................................. 568
Vanity mirrors ........................................ 364
VDIM...........................................................214
Vehicle data recordings ......................... 21
Vehicle dynamics integrated management .........................................214
Vehicle identification number ......... 553
Vehicle stability control .......................214
Ventilators ............................................... 372
Voice command switch* ................... 327
VSC ............................................................. 214T
U
V

622
IS250C/350C_U
What to do if...
What to do if...
A tire puncturesP. 5 1 3
P. 5 2 2If you have a flat tire
The engine does not start
P. 5 2 4If the engine will not start
P. 9 8Engine immobilizer system
P. 5 3 2If the vehicle battery is discharged
The shift lever cannot be
moved outP. 5 2 6If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 3 6If your vehicle overheats
The key is lostP. 5 2 7If you lose your keys
The battery runs outP. 5 3 2If the vehicle battery is discharged
The doors cannot be lockedP. 4 7Doors
The horn begins to soundP. 1 0 0Alarm
The vehicle is stuck in mud or
sandP. 5 3 9If the vehicle becomes stuck
A warning message is displayedP. 5 0 0If a warning message is displayed

624
IS250C/350C_U
GAS STATION INFORMATION
Auxiliary catch leverP. 4 1 3Trunk openerP. 5 1Fuel filler door P. 9 5
Hood lock release lever P. 4 1 3Fuel filler door openerP. 9 5Tire inflation pressureP. 5 6 3
Fuel tank capacity
(Reference)17.2 gal. (65 L, 14.3 Imp. gal.)
Fuel typeUnleaded gasoline only P. 96, 555
Cold tire inflation
pressureP. 5 6 3
Engine oil capacity
(Drain and refill 
reference)qt. (L, Imp. qt.)
Without filter 6.2 (5.9
, 5.2)With filter 6.7 (6.3, 5.5)
Engine oil typeP. 5 5 6