check engine Lexus IS F 2012 Owner's Guide

5
When trouble arises
483
5-2. Steps to take in an emergency
IS F_U
Follow the correction procedures.After taking the specified steps to co rrect the suspected problem, check
that the warning light turns off.
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once
(Comes on for 10 sec- onds.)
Indicates that an
attempt was
made to start the
engine without
the electronic
key being
present, or the
electronic key
was not function-
ing normally.
Start the engine
with the elec-
tronic key
present.
*
Once3 times
(Flashing)
Indicates that a
door other than
the driver’s door
has been opened
and closed with
the “ENGINE
START STOP”
switch in any
mode other than
OFF and the
electronic key
has been taken
out of the detec-
tion area.
Confirm the loca-
tion of the elec-
tronic key.

5
When trouble arises
493
5-2. Steps to take in an emergency
IS F_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.
●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 the
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
●Do not attach a heavily damaged wheel ornament, as it may fly off the wheel while
the vehicle is moving.
●Failure to follow these precautions could cause the wheel nuts to loosen and the
tire to fall off, resulting in 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.

5
When trouble arises
503
5-2. Steps to take in an emergency
IS F_U
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●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.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehi-
cle is not in use, due to natural discharge and the draining effects of certain
electrical appliances. If the vehicle is left for a long time, the battery may dis-
charge, and the engine may be unable to start. (The battery recharges automat-
ically during driving.)
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Open and close any of the doors with the “ENGINE START
STOP” switch OFF.
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.STEP2
STEP3
STEP4
STEP5

5
When trouble arises
505
5-2. Steps to take in an emergency
IS F_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.
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.
If the engine compartment
cover needs to be removed:
→P. 3 9 7
STEP1
STEP2
STEP3
STEP4

506
5-2. Steps to take in an emergency
IS F_U
■Overheating
If you observe the following, your vehicle may be overheating.
●The display on the engine coolant temperature gauge flashes 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 belt while the engine is running.
●Do not loosen the coolant reservoir 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 neces-
sary.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. (→P. 5 1 7 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP5

516
6-1. Specifications
IS F_U
Lubrication system
*: The engine oil capacity is a reference quantity to be used when exchanging.
Warm up and turn off the engine, wait more than 5 minutes, and check the oil
level on the dipstick.
■ Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the follow-
ing grade and viscosity.
Oil grade: ILSAC multigrade engine oil
Recommended viscosity: SAE 5W-30
SAE 5W-30 is the best choice for
good fuel economy and good
starting in cold weather.
If SAE 5W-30 is not available,
SAE 10W-30 oil may be used.
However, it should be replaced
with SAE 5W-30 at the next oil
change.
Oil capacity
(Drain and refill
 reference
*)
without filter8.7 qt. (8.2 L, 7.2 Imp. qt.)
with filter 9.8 qt. (9.3 L, 8.2 Imp. qt.)
Outside temperature

518
6-1. Specifications
IS F_U
Ignition system
Electrical system
Differential
*: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the
factory. Use Lexus approved “Toyota Genuine Differential Gear Oil” or an
equivalent of matching quality to satisfy the above specification. Please contact
your Lexus dealer for further details.
Spark plug
Make
GapDENSO FK20HBR11
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning the engine.
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 capacity1.42 qt. (1.35 L, 1.19 Imp. qt.)
Oil type and viscosity*“Toyota Genuine Differential Gear Oil
LX 75W-85 GL-5” or equivalent

564
Alphabetical index
IS F_U
Daytime running light system ........... 164
Defogger*Rear window........................................ 228
Side mirrors .......................................... 228
Dimension ................................................. 512
Dinghy towing ..........................................217
Display Dynamic radar crui se control ....... 177
Satellite switch mode ....................... 343
Trip information ................................... 158
Warning message............................. 473
Do-it-yourself maintenance ............ 390
Door courtesy lights Door courtesy lights.........................330
Wattage.................................................. 522
Door pockets..........................................339
Doors Door lock.................................32, 43, 46
Door windows ....................................... 76
Side mirrors ..............................................74
Driver's seat belt reminder light ..... 466
Driving Correct posture .................................... 92
Procedures ............................................. 126
Driving position memory ......................55
Electric power steering ....................... 197
Electronic key If the electronic key does not operate properly ............................ 499
Emergency flashers Switch ...................................................... 454
Emergency, in case of If a warning message is
displayed ............................................ 473 If the electronic key does not
operate properly............................ 499
If the engine will not start ............... 496
If the shift lever cannot be shifted from P....................................497
If the vehicle has a discharged
battery ................................................. 502
If the warning buzzer sounds...... 463
If the warning light turns on.......... 463
If you have a flat tire ........................ 487
If you lose your keys ........................ 498
If you think something is
wrong .................................................... 461
If your vehicle becomes stuck ....508
If your vehicle has to be stopped in an emergency .........509
If your vehicle needs to be towed ................................................... 455
If your vehicle overheats................505
Engine
ACCESSORY mode....................... 134
Compartment ..................................... 396
Engine switch ........................................ 134
Hood ....................................................... 393
How to start the engine ................... 134
Identification number ........................ 513
If the engine will not start ............... 496
Ignition switch ....................................... 134
Overheating ........................................505
Engine compartment cover ............. 397
Engine coolant Capacity .................................................. 517
Checking............................................... 402
Preparing and checking
before winter...................................... 214D
E

565
Alphabetical index
IS F_U
Engine coolant temperature gauge .......................................................150
Engine immobilizer system ................. 86
Engine oil Capacity...................................................516
Checking ............................................... 399
Preparing and checking before winter ...................................... 214
EPS............................................................... 197
Event data recorder................................. 21
First-aid kit storage belt..................... 356
Floor mat.................................................. 355
Fluid Brake ....................................................... 404
Washer ................................................... 409
Fog lights Switch ........................................................166
Wattage ................................................. 522
Footwell lights........................................ 330
Front fog lights Switch ........................................................166
Wattage ................................................. 522
Front passenger occupant
classification system ..........................106
Front passenger's seat belt
reminder light ......................................466
Front seats
Adjustment .............................................. 54
Driving position memory ................. 55
Seat position memory ........................ 59
Front turn signal lights
Switch ........................................................ 147
Wattage ................................................. 522 Fuel
Capacity .................................................. 515
Fuel gauge.............................................. 150
Fuel pump shut off system............. 462
Gas station information ..................576
Information ............................................523
Refueling....................................................83
Fuel door .....................................................83
Fuel filler door ...........................................83
Fuel pump shut off system................. 462
Fuses ........................................................... 431
Garage door opener ..........................359
Gas station information...................... 576
Gauges ...................................................... 150
Glove box ................................................335
Glove box light ......................................335
Hands-free system for mobile phone* ................................................... 299
Hazard lights Switch.......................................................454
Head restraints Adjusting ....................................................61
Headlight aim ......................................... 445
Headlight cleaner ...................................172
Headlights Discharge headlight
precautions......................................... 451
Replacing light bulbs ........................ 447
Switch.........................................................162
Wattage .................................................. 522
F
G
H
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

571
Alphabetical index
IS F_U
Warning lightsAnti-lock brake system .................. 464
Brake assist system .......................... 464
Brake system ....................................... 463
Charging system ............................... 464
Electric power steering system
warning light ..................................... 464
Low fuel level....................................... 466
Malfunction indicator lamp .......... 464
Master warning light ........................ 466
Open door ........................................... 466
Pre-collision system ......................... 464
Pretensioners ...................................... 464
Seat belt reminder light .................. 466
SRS airbags .......................................... 464
Tire pressure warning
light........................................................ 466 Warning messages
Automatic transmission
fluid ........................................................ 477
Dynamic radar
cruise control........................ 475, 477
Engine oil level .................................... 477
Engine oil maintenance .................. 477
Engine oil pressure ........................... 474
Engine oil temperature ................... 474
Headlight................................................ 475
Hood ........................................................ 477
Intuitive parking assist .......... 475, 477
Moon roof ............................................. 477
Open door ............................................ 477
Parking brake ...................................... 477
Pre-collision system.............. 475, 477
Smart access system with push-button start ........................... 483
Steering lock......................................... 475
Trunk ........................................................ 477
Washer fluid ......................................... 477
Washer
Checking .............................................. 409
Preparing and checking before winter ......................................214
Switch........................................................ 168
Washing and waxing ........................... 378
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.