engine oil Lexus IS250C 2010 Owner's Manual

TABLE OF CONTENTSIndex
10_IS250C/350C_U
6
5-1. Essential informationEmergency flashers..................... 452
If your vehicle needs to be towed ....................................... 453
If you think something is wrong ............................................. 459
Fuel pump shut off system ....... 460
Event data recorder ..................... 461
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ........................................ 463
If a warning message is displayed ....................................... 472
If you have a flat tire (vehicles with standard
tires) ............................................... 486
If you have a flat tire (vehicles with run-flat
tires) ................................................ 495
If the engine will not start .......... 497
If the shift lever cannot be shifted from P........................ 499
If you lose your keys ................... 500
If the electronic key does not operate properly ................ 501
If the vehicle battery is discharged .................................. 506
If your vehicle overheats .......... 509 If the vehicle becomes stuck .... 512
If the retractable hardtop
does not close.............................. 514
6-1. Specifications Maintenance data (fuel, oil level, etc.)..................... 526
Fuel information ............................ 542
Tire information............................. 545
6-2. Customization Customizable features............... 557
6-3. Initialization Items to initialize ........................... 562
Reporting safety defects for U.S. owners........................... 564
Seat belt instructions for Canadian owners
(in French) ................................... 565
5When trouble arises
6Vehicle specifications
7For owners

141
2-1. Driving procedures
2
When driving
10_IS250C/350C_U
NOTICE
■If you hear a squealing or scraping noise (brake pad wear limit indicators)
Have your Lexus dealer check and replace the brake pads as soon as possible.
The rotor damage can result if the pads are not replaced when needed.
Front brake only: Moderate levels of the brake pad and disc wear allow enhanced
front braking power. As a result, the discs may wear more quickly than conventional
brake discs. Therefore, when replacing the brake pads, Lexus recommends that you
also have the thickness of the discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
those of the brake discs are exceeded.
■If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering wheel
firmly and gradually press the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds.
●The vehicle will behave abnormally.
Replace a flat tire with a new one. ( →P. 4 8 8 )
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause the
following serious damage to the vehicle.
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to
have your Lexus dealer check the following.
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, transmission,
differential, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where
possible), and the function of all joints, bearings, etc.

220
2-5. Driving information
10_IS250C/350C_U
Winter driving tips
Carry out the necessary preparations and inspections before driving the
vehicle in winter. Always drive the vehicle in a manner appropriate to the
prevailing weather conditions.
■Pre-winter preparations
● Use fluids that are appropriate to the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspect the level and specific gravity of
battery electrolyte.
● Have the vehicle fitted with four snow tires or purchase a set of
tire chains for the rear tires.
Ensure that all tires are the specified size and the same brand, and that
chains match the size of the tires.
■Before driving the vehicle
Perform the following according to the driving conditions.
● Do not try to forcibly open a window or move a wiper that is fro-
zen. Pour warm water over the frozen area to melt the ice. Wipe
away the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Remove any ice that has accumulated on the vehicle chassis.
● Periodically check for and remove any excess ice or snow that
may have accumulated in the wheel well or on the brakes.

381
4-2. Maintenance
4
Maintenance and care
10_IS250C/350C_U
■Allow inspection and repairs to be performed by a Lexus dealer
●Lexus technicians are well-trained specialists and are kept up to date with the
latest service information. They are well informed about the operations of all
systems on your vehicle.
●Keep a copy of the repair order. It proves that the maintenance that has been
performed is under warranty coverage. If any problem should arise while your
vehicle is under warranty, your Lexus dealer will promptly take care of it.
CAUTION
■If your vehicle is not properly maintained
It could result in serious damage to the vehicle and possible serious injury or death.
■Warning in handling of battery
●Engine exhaust, some of its constituents, and a wide variety of automobile com-
ponents contain or emit chemicals known to the State of California to cause can-
cer and birth defects and other reproductive harm. Work in a well ventilated area.
●Oils, fuels and fluids contained in vehicles as well as waste produced by compo-
nent wear contain or emit chemicals known to the State of California to cause
cancer and birth defects or other reproductive harm. Avoid exposure and wash
any affected area immediately.
●Battery posts, terminals and related accessories contain lead and lead com-
pounds which are known to cause brain damage. Wash your hands after han-
dling. (→P. 4 0 2 )

382
4-2. Maintenance
10_IS250C/350C_U
General maintenance
Engine compartment
ItemsCheck points
BatteryMaintenance-free. (→P. 4 0 2 )
Brake fluidAt the correct level? ( →P. 4 0 0 )
Engine coolantAt the correct level? ( →P. 3 9 8 )
Engine oilAt the correct level? ( →P. 3 9 5 )
Exhaust systemNo fumes or strange sounds?
Radiator/condenser/hosesNot blocked with foreign matter?
(→ P. 4 0 0 )
Wa s h e r f l u i dAt the correct level? ( →P. 4 0 5 )
Listed below are the general maintenance items that should be performed
at the intervals specified in the “Warranty and Services Guide” or “Owners
Manual Supplement”. It is recommended that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

387
4-3. Do-it-yourself maintenance
4
Maintenance and care
10_IS250C/350C_U
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions.
■When working on the engine compartment
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
ItemsParts and tools
Engine oil level (→P. 3 9 5 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses (→ P. 4 2 7 )• Fuse with same amperage rating as
original
Tire inflation pressure ( →P. 4 1 6 )• Tire pressure gauge
• Compressed air source
Headlight aim ( →P. 4 4 2 )• Phillips-head screwdriver
Radiator and condenser ( →P. 4 0 0 )
Wa s h e r f l u i d ( →P. 4 0 5 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel

392
4-3. Do-it-yourself maintenance
10_IS250C/350C_U
Engine compartment
IS350C
Battery (→P. 4 0 2 )
Engine oil level dipstick (→P. 395)
Engine oil filler cap (→P. 395)
Brake fluid reservoir (→P. 4 0 0 )
Fuse boxes ( →P. 4 2 7 )Washer fluid tank
(→P. 405)
Electric cooling fans
Condenser ( →P. 4 0 0 )
Radiator ( →P. 4 0 0 )
Engine coolant reservoir (→P. 398)

393
4-3. Do-it-yourself maintenance
4
Maintenance and care
10_IS250C/350C_U
IS250C
Battery (→P. 4 0 2 )
Engine oil level dipstick (→P. 395)
Engine oil filler cap (→P. 395)
Brake fluid reservoir (→P. 4 0 0 )
Fuse boxes ( →P. 4 2 7 )Washer fluid tank
(→P. 405)
Electric cooling fans
Condenser ( →P. 4 0 0 )
Radiator ( →P. 4 0 0 )
Engine coolant reservoir (→P. 398)

395
4-3. Do-it-yourself maintenance
4
Maintenance and care
10_IS250C/350C_U
Engine oilWith the engine at operating temperature and turned off, check the oil
level on the dipstick.
■ Checking the engine oil
Park the vehicle on level ground. After turning off the engine, wait
more than five minutes for the oil to drain back into the bottom of
the engine.
Hold a rag under the end and pull
the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the
oil level.
Wipe the dipstick and reinsert it fully. Low
Full
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6

396
4-3. Do-it-yourself maintenance
10_IS250C/350C_U■
Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of
the same type as already in the
engine.
Make sure to check the oil type and prepare the items needed before
adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
Engine oil selection→ P. 5 3 0
Oil quantity
(Low → Full)1.6 qt. (1.5 L, 1.3 Imp. qt.)
ItemsClean funnel
STEP1
STEP2
STEP3