run flat Lexus IS250C 2010 Do-It-Yourself Maintenance / LEXUS 2010 IS350C/250C (OM53A20U) User Guide

498
5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to the vehicle
suddenly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle supported by a jack.
●Do not start or run the engine while your vehicle is supported by the jack.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greate r than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Replacing a flat tire
Observe the following precautions to reduce the risk of death or serious injury.
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened, leading to
bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts
to loosen and the wheel may fall off, causing a serious accident. Remove any oil or
grease from the wheel bolts or wheel nuts.
●Have the wheel nuts tightened with a torque wrench to 76 ft•lbf (103 N•m, 10.5
kgf•m) as soon as possible after changing wheels.
Failure to follow these precautions could cause the nuts to loosen and the wheels
may fall off, which could lead to an accident causing death or serious injury.

5
When trouble arises
501
5-2. Steps to take in an emergency
If you have a flat tire (vehicles with run-flat tires)
■In some condition (such as at high temperatures)
You cannot continue driving for up to 100 miles (160 km).
■If you cannot distinguish between th e standard tires and run-flat tires
Consult your Lexus dealer.
■Spare tire
A spare tire is not provided on the vehicle with run-flat tires.
■For the detailed information on run-flat tires
See the tire warranty book.
Take your vehicle to the nearest Lexus dealer or authorized tire dealer as
soon as possible.
■ Run-flat tires (A “RFT” or “DSST” mark is molded on the sidewall)
You can continue driving a vehi-
cle with run-flat tires even if any
tire goes flat.
It is able to run for a maximum of
100 miles (160 km) at a speed
below 50 mph (80 km/h) after
the tire pressure warning light
comes on. (P. 4 7 1 )

5
When trouble arises
529
5-2. Steps to take in an emergency
■Parts removed during the manual closing procedure
Keep any parts removed during the procedure inside the vehicle and take all
removed parts and the vehicle to your Lexus dealer.
CAUTION
■When manually closing the retractable hardtop
Observe the following precautions:
●Stop the vehicle on a flat surface in a safe place.
●Set the parking brake and shift the shift lever to P.
●Ensure that there are no occupants inside the vehicle.
●Do not perform this procedure while there are strong winds blowing.
●Turn the “ENGINE START STOP” switch off.
●Be careful not to catch any part of your body or clothing in the moving parts.
●Some parts of this procedure may result in an injury if performed with bare hands.
Protect your hands with gloves or a piece of cloth when performing the proce-
dure.
NOTICE
■After the retractable hardtop has been closed manually
●Drive as slowly as possible. The trunk lid may not be closed securely, causing it to
open due to wind pressure while driving.
●After the procedure is performed, take the vehicle to your Lexus dealer as soon
as possible.

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6-1. Specifications
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is
a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly filled in the tire. A
tube type tire has a tube inside the ti re and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure ( P. 4 1 8 )
Maximum cold tire inflation pressure ( P. 5 4 2 )
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform tire quality grading” that follows.
Summer tire or all season tire (P. 4 1 8 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
“TEMPORARY USE ONLY” ( P. 4 9 7 )
A compact spare tire is identified by the phrase “TEMPORARY USE
ONLY” molded into its sidewall. This tire is designed for temporary
emergency use only.
Run-flat tire (RFT) or standard tire ( P. 5 5 4 )
This vehicle can be equipped with ei ther run-flat tires (RFT) or standard
tires. A “RFT” or “DSST” mark is molded on the sidewall of the run-flat
tire.

554
6-1. Specifications
Tire size■ Typical tire size information
The illustration indicates typical
tire size.
Ti r e u s e
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 or 3 digits)
Speed symbol
(alphabet with one letter)
Run-flat tire code

582
Alphabetical index
Cruise controlCruise control ...................................... 184
Dynamic radar cruise control .......187
Cup holder ..............................................343
Customizable features .......................564
Daytime running light system ........... 175
Defogger Rear window ........................................ 238
Side mirror ............................................ 238
Dimension ................................................532
Dinghy towing .............................225, 226
Display Dynamic radar cruise control .......187
Satellite switch mode ....................... 349
Trip information ....................................170
Warning message............................. 478
Do-it-yourself maintenance .............392
Door courtesy lights Door courtesy lights.........................338
Wattage.................................................. 547
Doors Door lock................................ 28, 40, 43
Door windows ....................................... 78
Side mirrors ............................................. 75
Driver's seat belt reminder light .......471
Driving Correct posture .................................... 98
Procedures ............................................. 132
Driving position memory ...................... 56 Electric power steering...................... 204
Electronic key
If the electronic key does not operate properly............................ 507
Emergency, in case of If the engine will not start ............... 503
If the retractable hardtop does not close ................................. 520
If the shift lever cannot be shifted from P...................................505
If the vehicle has a discharged battery ................................................... 512
If the warning buzzer sounds...... 469
If the warning light turns on.......... 469
If the warning message is displayed ............................................ 478
If you have a flat tire .........................492
If you lose your keys ........................506
If you think something is wrong .................................................. 465
If the electronic key does not operate properly............................ 507
If your vehicle becomes stuck ......518
If your vehicle has to be stopped in an emergency ......... 530
If your vehicle needs to be towed ................................................... 459
If your vehicle overheats.................. 515
Emergency flashers Switch ...................................................... 458
D
E

588
Alphabetical index
TachometerTacho indicator.................................... 160
Tachometer ........................................... 160
Tail lights Switch ........................................................ 174
Talk switch ..................................................311
Telephone switch .....................................311
Theft deterrent system Alarm .......................................................... 95
Engine immobilizer system ............. 93
Theft prevention labels .......................... 97
Tire inflation pressure ......................... 422
Tire information Glossary................................................. 557
Size ...........................................................554
Tire identification number .............553
Uniform tire quality grading ........ 555
Tires Chains ..................................................... 220
Checking ................................................. 412
If you have a flat tire .......................... 492
Inflation pressure................................ 422
Inflation pressure sensor.................. 413
Information............................................. 551
Replacing ............................................... 492
Rotating tires .......................................... 412
Run-flat tire............................................. 501
Size ........................................................... 542
Snow tires .............................................. 220
Spare tire................................................ 492
Tools ........................................................... 492
Total load capacity ................................ 219 Towing
Dinghy towing .........................225, 226
Emergency towing ........................... 459
Trailer towing ....................................... 224
TRAC ........................................................ 204
Traction control..................................... 204
Transmission shift switches........ 149, 151
Trip meter ................................................. 160
Trunk Opener ...................................................... 47
Trunk light Trunk light ................................................ 48
Wattage ..................................................547
Turn signal lights Replacing light bulbs ....................... 450
Switch ........................................................ 156
Wattage ..................................................547
Vanity lights Vanity lights...........................................347
Wattage ..................................................547
Vanity mirrors ........................................ 347
VDIM......................................................... 204
Vehicle dynamics integrated management ....................................... 204
Vehicle identification number......... 533
Vehicle stability control ..................... 204
Ventilators ............................................... 355
Voice command switch .......................312
VSC ........................................................... 204T
V

590
What to do if...
What to do if...
A tire puncturesP. 4 9 2If you have a flat tire
The engine does not start
P. 5 0 3If the engine will not start
P. 9 3Engine immobilizer system
P. 5 1 2If the vehicle battery is discharged
The shift lever cannot be
moved outP. 5 0 5If 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 1 5If your vehicle overheats
The key is lostP. 5 0 6If you lose your keys
The battery runs outP. 5 1 2If the vehicle battery is discharged
The doors cannot be lockedP. 4 3Doors
The horn begins to soundP. 9 5Alarm
The vehicle is stuck in mud or
sandP. 5 1 8If the vehicle becomes stuck

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GAS STATION INFORMATION
Auxiliary catch leverP. 3 9 5Trunk openerP. 4 7Fuel filler door P. 9 0
Hood lock release lever P. 3 9 5Fuel filler door openerP. 9 0Tire inflation pressureP. 5 4 2
Fuel tank capacity17.2 gal. (65 L, 14.3 Imp. gal.)
Fuel typeUnleaded gasoline only P. 91, 535
Cold tire inflation
pressureP. 542
Engine oil capacity
(Drain and refill)qt. (L, Imp. qt.)
Without filter 6.2 (5.9
, 5.2)With filter 6.6 (6.3, 5.5)
Engine oil type
Toyota Genuine Motor Oil or equivalent
Oil grade: ILSAC multigrade engine oil P. 536
Recommended oil viscosity: SAE 5W-30