LEXUS IS250 2016 Owners Manual

303
4-2. Maintenance
4

Maintenance and care Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include
OBD (On Board Diagnostics) checks. The OBD system monitors the oper-
ation of the emission control system.
nIf the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere in
the emission control system. Your vehicle may not pass the I/M test
and may need to be repaired. Contact your Lexus dealer to service
the vehicle.
nYour vehicle may not pass the I/M test:
lWhen the battery is disconnected or discharged
Readiness codes that are set during ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.
lWhen the fuel tank cap is loose
The malfunction indicator lamp comes on as a temporary mal-
function and your vehicle may not pass the I/M test.
nWhen the malfunction indicator lamp goes off after several driv-
ing trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
nIf your vehicle does not pass the I/M test
Contact your Lexus dealer to prepare the vehicle for re-testing.

304
4-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance yourself, be sure to follow the correct proce-
dure given in these sections.
ItemsPa r t s a n d t o o l s
Battery condition (→P. 32 1)

305
4-3. Do-it-yourself maintenance
4

Maintenance and care
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.
nWhen working on the engine compartment
lKeep hands, clothing, and tools away from the moving fan and engine drive belt.
lBe 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.
lDo not leave anything that may burn easily, such as paper or rags, in the engine
compartment.
lDo not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
lBe extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
ItemsPa r t s a n d t o o l s
Engine oil level (→P. 31 3 )

306
4-3. Do-it-yourself maintenance
CAUTION
nWhen working near the electric cooling fan or radiator grille
Be sure the “ENGINE START STOP” switch is OFF.
With the “ENGINE START STOP” switch in IGNITION ON mode, the electric
cooling fan may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. (→P. 3 1 9 )
nSafety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in the eyes.
NOTICE
nIf you remove the air cleaner
Driving with the air filter removed may cause excessive engine wear due to dirt in
the air. Also a backfire could cause a fire in the engine compartment.

307
4-3. Do-it-yourself maintenance
4

Maintenance and care
Hood
CAUTION
nPre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly it may open while the vehicle is in motion and
cause an accident, which may result in death or serious injury.
Release the lock from the inside of the vehicle to open the hood.
Pull the hood release lever.
The hood will pop up slightly.
Lift the auxiliary catch lever and
lift the hood.
STEP1
STEP2

308
4-3. Do-it-yourself maintenance
Positioning a floor jack
When raising your vehicle with a floor jack, position the jack correctly.
Improper placement may damage your vehicle or cause injury.
nFront
2WD
AW D
nRear

309
4-3. Do-it-yourself maintenance
4

Maintenance and care
CAUTION
nWhen raising your vehicle
Make sure to observe the following to reduce the possibility of death or serious
injury.
lDo not use the jack that was supplied with your vehicle.
lDo not put any part of your body or get underneath the vehicle supported only by
the floor jack.
Always use automotive jack stands on a solid, level, surface.
lDo not start the engine while the vehicle is supported by the floor jack.
lStop the vehicle on level firm ground, firmly set the parking brake and put the shift
lever in P (automatic) or R (manual).
lMake sure to set the floor jack properly at the jack point.
Raising the vehicle with an improperly positioned floor jack will damage the vehi-
cle and may cause the vehicle to fall off the floor jack.
lDo not raise the vehicle while someone is in the vehicle.
lWhen raising the vehicle, do not place any objects on top of or underneath the
floor jack.
lLift up the vehicle using a floor jack such as
the one shown in the illustration.

310
4-3. Do-it-yourself maintenance
Engine compartment
IS350
Battery (→P. 321)
Engine oil level dipstick
(→P. 313)
Engine oil filler cap
(→P. 313)
Brake fluid reservoir
(→P. 319)
Fuse boxes (→P. 3 4 7 )
Washer fluid tank
(→P. 32 4 )
Electric cooling fans
Condenser (→P. 319)
Radiator (→P. 319)
Engine coolant reservoir
(→P. 317)

311
4-3. Do-it-yourself maintenance
4

Maintenance and care
IS250
Battery (→P. 321)
Engine oil level dipstick
(→P. 313)
Engine oil filler cap
(→P. 313)
Brake fluid reservoir
(→P. 319)
Fuse boxes (→P. 3 4 7 )
Washer fluid tank
(→P. 32 4 )
Electric cooling fans
Condenser (→P. 319)
Radiator (→P. 319)
Engine coolant reservoir
(→P. 317)

312
4-3. Do-it-yourself maintenance
Engine compartment cover
nRemoving the engine compartment cover
Front
Outside
nInstalling the clips
Press the tip of the clip against a
hard surface, such as a desk, to
allow the center part of the clip
to be pushed up.
Insert
Press