2010 Lexus IS250 check engine

498
5-2. Steps to take in an emergency
IS350/250_U
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 while it is 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 greater 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.

502
5-2. Steps to take in an emergency
IS350/250_U
Emergency start function
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the “ENGINE START STOP” switch
is functioning normally.Vehicles with an automatic transmission Set the parking brake.
Put the shift lever in P.
Set the “ENGINE START STOP” switch to ACCESSORY mode.
Press and hold the “ENGINE START STOP” switch for about 15
seconds while depressing the brake pedal firmly.
Vehicles with a manual transmission Set the parking brake.
Put the shift lever in N.
Set the “ENGINE START STOP” switch to the ACCESSORY
mode.
Push and hold the “ENGINE ST ART STOP” switch for about 15
seconds while depressing the brake pedal and clutch pedal firmly.
Even if the engine can be started using the above steps, the system may
be malfunctioning. Have the vehicle checked by your Lexus dealer.
STEP1
STEP2
STEP3
STEP4
STEP1
STEP2
STEP3
STEP4

510
5-2. Steps to take in an emergency
IS350/250_U
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the battery.
●Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any part other than the intended terminal.
●Do not allow the jumper cables to come into contact with the “+” and “-” termi-
nals.
●Do not allow open flame or use matches, cigarette lighters or smoke near the
battery.
Maintain the engine speed of the second vehicle and turn the
“ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer
as soon as possible.STEP5
STEP6

512
5-2. Steps to take in an emergency
IS350/250_U
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the automatic air
conditioning system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. ( →P. 4 0 2 )
Check to see if the cooling fans are operating.
If the fans are operating: Wait until the temperature of the engine (shown on the
instrument cluster) begins to fall and then stop the engine.
If the fans are not operating: Stop the engine immediately and call your local Lexus
dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and inspect
the radiator core (radiator) for
any leaks.STEP1
STEP2
STEP3
STEP4
STEP5

5
When trouble arises
513
5-2. Steps to take in an emergency
IS350/250_U
■Overheating
If you observe the following, your vehicle may be overheating.
●The engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
●Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when inspecting under the hood of your vehicle
●If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot, causing serious
injury such as burns.
●Keep hands and clothing away from the fans and other belts while the engine is
running.
●Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
Add engine coolant if required.
Water can be used in an emer-
gency if engine coolant is
unavailable. (→P. 5 2 4 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6

525
6-1. Specifications
6
Vehicle specifications
IS350/250_U
Electrical system
DifferentialFront
Rear
*: “Toyota Genuine Differential Gear Oil” is filled in your Lexus vehicle at the fac- tory. Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equiv-
alent of matching quality to satisfy the above specification. Please contact your
Lexus dealer for further details.
Battery
Open voltage* at
68 °F (20 °C):12.6  12.8 V Fully charged
12.2 
12.4 V Half charged
11.8 
12.0 V Discharged
(*: Voltage checked 20 minutes after
the engine and all the lights are turned
off)
Charging rates5 A max.
Oil capacity0.74 qt. (0.70 L, 0.61 Imp. qt.)
Oil typeHypoid gear oil API GL-5
Oil viscosityAbove -18 °C (0 °F): SAE90
Below -18° C (0°F): SAE80W or SAE80W-90
Oil capacity
IS350:
1.42 qt. (1.35 L, 1.19 Imp. qt.)
IS250:
1.20 qt. (1.15 L, 1.01 Imp. qt.)
Oil type and viscosity*“Toyota Genuine Differential Gear Oil LT 75W-85
GL-5” or equivalent

567
Alphabetical index
IS350/250_U
Engine compartment cover............. 402
Engine coolantCapacity................................................. 524
Checking ............................................... 406
Preparing and checking before winter ...................................... 210
Engine coolant temperature gauge ........................................................ 151
Engine immobilizer system ................. 86
Engine oil Capacity................................................. 522
Checking ............................................... 403
Preparing and checking before winter ...................................... 210
Engine oil maintenance data ........... 405
EPS............................................................... 196
Event data recorder.............................469
First-aid kit storage belt..................... 360
Floor mat.................................................. 359
Fluid Brake .......................................................408
Washer ..................................................... 413
Fog lights
Switch ........................................................168
Wattage ................................................. 533
Footwell lights........................................ 329
Front fog lights Switch ........................................................168
Wattage ................................................. 533 Front passenger occupant
classification system .......................... 104
Front passenger's seat belt reminder light...................................... 473
Front seats Adjustment .................................................51
Driving position memory ..................53
Seat position memory ........................ 57
Front turn signal lights Switch.........................................................147
Wattage ................................................. 533
Fuel
Capacity .................................................. 521
Fuel gauge................................................ 151
Fuel pump shut off system............ 468
Gas station information ..................576
Information ............................................534
Refueling....................................................83
Fuel door .....................................................83
Fuel filler door ...........................................83
Fuel pump shut off system.................468
Fuses .......................................................... 436
Garage door opener ..........................363
Gas station information...................... 576
Gauges ........................................................151
Glove box ................................................333
Glove box light ...................................... 334
F
G

572
Alphabetical index
IS350/250_U
TachometerTacho indicator...................................... 151
Tachometer ............................................. 151
Tail lights
Switch ....................................................... 165
Talk switch .............................................. 303
Telephone switch ..................................302
Theft deterrent system
Alarm ..........................................................88
Engine immobilizer system ............. 86
Theft prevention labels ..........................90
Tire inflation pressure .........................425
Tire information Glossary................................................. 542
Size ...........................................................539
Tire identification number .............539
Uniform tire quality grading .........540
Tires
Chains .......................................................210
Checking ................................................. 414
If you have a flat tire.......................... 492
Inflation pressure................................ 425
Inflation pressure sensor..................416
Information............................................ 537
Replacing............................................... 492
Rotating tires .......................................... 414
Size ...........................................................528
Snow tires ................................................210
Tools ........................................................... 492
Total load capacity ...............................209 Towing
Dinghy towing ............................ 215, 216
Emergency towing ............................. 461
Trailer towing ........................................ 214
TRAC ..........................................................196
Traction control.......................................196
Transmission shift switches.................142
Trip meter ................................................... 151
Trunk Extending trunk space.....................357
Opener ...................................................... 47
Trunk light
Trunk light ................................................ 48
Wattage ................................................. 533
Turn signal lights Replacing light bulbs ....................... 452
Switch........................................................ 147
Wattage ................................................. 533
Vanity lights Vanity lights.......................................... 340
Wattage ................................................. 533
Vanity mirrors ........................................ 340
VDIM...........................................................196
Vehicle dynamics integrated management .........................................196
Vehicle identification number .......... 519
Vehicle stability control .......................196
Ventilators ................................................ 351
Voice command switch ..................... 302
VSC .............................................................196T
V