2009 Lexus IS250 low oil pressure

305
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0808)
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. 313)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses (
P. 3 4 7 )• Fuse with same amperage rating as
original
Tire inflation pressure (
P. 3 3 6 )• Tire pressure gauge
• Compressed air source
Headlight aim (
P. 3 6 1 )• Phillips-head screwdriver
Radiator and condenser (
P. 3 1 9 )

Wa s h e r f l u i d (
P. 3 2 4 )
• Water washer fluid containing anti-freeze (for winter use)
•Funnel

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5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0808)
If a warning message is displayed
Stop the vehicle immediately.
A buzzer sounds and a warning message is shown on the multi-informa-
tion display. The following warnings indicate the possibility of damage to
the vehicle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Lexus dealer.
Wa r n i n g m e s s a g eDetails
(Flashing)
Indicates an abnormal engine oil pressure. The warning light may turn on if the engine oil pres-
sure is too low.
If a warning is shown on the multi-information display, stay calm and per-
form the following actions:
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the
multi-information display.
Multi-information display
If any of the warning light turns on again after performing the following
actions, contact your Lexus dealer.

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6
Vehicle specifications
08_IS350/250_U_(L/O_0808)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Engine oil maintenance
dataAfter changing engine oilP. 3 1 3
Tire pressure warning
system
• When rotating the tires differing with front and rear tire inflation pressures.
• When changing the tire inflation pressure by changing traveling
speed.
• When changing the tire size.
P. 3 2 6
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.

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Alphabetical index
08_IS350/250_U_(L/O_0808)
Warning buzzers
Brake system ....................................... 383
Open door ..........................................385
Seat belt reminder ............................385
Warning lights
Anti-lock brake system .................. 384
Brake assist system .......................... 384
Brake system ....................................... 383
Charging system ............................... 384
Electric power steering warning light ..................................... 384
Low fuel level.......................................385
Malfunction indicator lamp .......... 384
Master warning light ........................385
Open door ...........................................385
Pre-collision system ......................... 384
Pretensioners ...................................... 384
Seat belt reminder light ..................385
SRS airbags .......................................... 384
Tire pressure warning
light........................................................385
Warning messages
AWD system....................................... 393
Dynamic radar cruise control .......................393, 395
Engine oil level.................................... 395
Engine oil maintenance.................. 395
Engine oil pressure........................... 392
Hood ....................................................... 395
Intuitive parking assist .........393, 395
Moon roof............................................. 395
Open door ........................................... 395
Parking brake ...................................... 395
Pre-collision system .............393, 395 Smart access system with
push-button start ........................... 400
Steering lock.........................................393
Tire pressure warning system................... 393, 395
Trunk ....................................................... 395
Washer fluid ........................................ 395
Washer
Checking ............................................... 324
Preparing and checking
before winter ................................... 200
Switch........................................................ 160
Washing and waxing ........................... 292
Weight
Cargo capacity .................................... 196
Load limits .............................................. 199
Weight.................................................... 430
Wheels ......................................................340
Window glasses ...................................... 69
Window lock switch ............................... 69
Windows
Power windows .....................................69
Rear window defogger.................... 218
Washer .................................................... 160
Windshield wipers................................. 160
Wireless remote control key
Replacing the battery.......................345
WMA disc ............................................... 235
W
*: Refer to the “Navigation System Owner’s Manual”