battery Lexus IS250 2008 Using the air conditioning system and defogger / LEXUS 2008 IS250 (OM53699U) Owner's Guide

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4-2. Maintenance
General maintenance
Engine compartment
ItemsCheck points
BatteryMaintenance-free. (P. 3 0 2 )
Brake fluidAt the correct level? ( P. 3 0 1 )
Engine coolantAt the correct level? ( P. 2 9 9 )
Engine oilAt the correct level? ( P. 2 9 5 )
Exhaust systemNo fumes or strange sounds?
Radiator/condenser/hosesNot blocked with foreign matter?
( P. 3 0 1 )
Wa s h e r f l u i dAt the correct level? ( P. 3 0 5 )
Listed below are the general maintenance items that should be performed
at the intervals specified in the “War ranty and Services Guide” or “Owners
Manual Supplement”. It is recomme nded that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

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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.
■ If 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.
■ Your vehicle may not pass the I/M test:
●When 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.
● When 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.
■ When the malfunction indicator la mp 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.
■ If your vehicle does not pass the I/M test
Contact your Lexus dealer to prep are the vehicle for re-testing.

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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. 3 0 2)
•Warm water
• Baking soda
•Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( P. 3 0 1 )
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level ( P. 2 9 9 )
• “Toyota Super Long Life Coolant”
or similar high-quality ethylene gly-
col-based non-silicate, non-amine,
non-nitrite and non-borate coolant
with long-life hybrid organic acid
technology.
For the U.S.A.:
“Toyota Super Long Life Coolant”
is pre-mixed with 50% coolant and
50% deionized water.
For Canada:
“Toyota Super Long Life Coolant”
is pre-mixed with 55% coolant and
45% deionized water.
• Funnel (used only for adding engine coolant)

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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.
■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 easi ly, 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.
ItemsPa r t s a n d t o o l s
Engine oil level ( P. 2 9 5 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used only for adding engine oil)
Fuses ( P. 3 2 7 )• Fuse with same amperage rating as
original
Tire inflation pressure ( P. 3 1 6 )• Tire pressure gauge
• Compressed air source
Headlight aim ( P. 3 4 1 )• Phillips-head screwdriver
Radiator and condenser (P. 3 0 1 )
Wa s h e r f l u i d (P. 3 0 5 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel

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4-3. Do-it-yourself maintenance
Engine compartment
IS350
Battery (P. 302)
Engine oil level dipstick (P. 295)
Engine oil filler cap (P. 295)
Brake fluid reservoir (P. 301)
Fuse boxes ( P. 327)Washer fluid tank
(P. 305)
Electric cooling fans
Condenser ( P. 301)
Radiator ( P. 301)
Engine coolant reservoir (P. 2 9 9 )

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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250
Battery (P. 302)
Engine oil level dipstick (P. 295)
Engine oil filler cap (P. 295)
Brake fluid reservoir (P. 301)
Fuse boxes ( P. 327)Washer fluid tank
(P. 305)
Electric cooling fans
Condenser ( P. 301)
Radiator ( P. 301)
Engine coolant reservoir (P. 2 9 9 )

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4-3. Do-it-yourself maintenance
BatteryCheck the battery as follows.
■ Battery exterior
Make sure that the battery terminals are not corroded and that there
are no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
CAUTION
■When filling the reservoir
Take care because brake fluid can harm your hands or eyes and damage painted
surfaces.
If fluid gets in your eyes, flush your eyes with clean water immediately.
If you still experience discomfort, see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or
when the fluid level in the accumulator is high.
If the reservoir needs frequent refilli ng, it may indicate a serious problem.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Checking battery condition
Check the battery condition using the indicator color.
Blue: Good condition
White: Charging is necessary.
Have the vehicle inspected by
your Lexus dealer.
Red: Not working properly,
have the battery checked by
your Lexus dealer.
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, before recharging:
●If recharging with the battery installed on the vehicle, be sure to disconnect the
ground cable.
●Make sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the battery.
■After recharging the battery
The engine may not start. Follow the procedure below to initialize the system.
Shift the shift lever to P (automatic) or depress the brake pedal with the
shift lever in N (manual).
Open and close any of the doors.
Restart the engine.
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
CAUTION
■Chemicals in the battery:
A battery contains poisonous and corrosive sulfuric acid and may produce hydro-
gen gas which is flammable and explosive. To reduce the risk of death or serious
injury, take the following precautions while working on or near battery:
●Do not cause sparks by touching the battery terminals with tools.
●Do not smoke or light a match near the battery.
●Avoid contact with eyes, skin and clothes.
●Never inhale or swallow electrolyte.
●Wear protective safety glasses when working near the battery.
●Keep children away from the battery.
■Where to safety charge the battery
Always charge the battery in an open area. Do not charge the battery in a garage or
closed room where there is not sufficient ventilation.
■How to recharge the battery
Only perform a slow charge (5 A or less). The battery may explode if charged at a
quicker rate.
■Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immediate medi-
cal attention. If possible, continue to apply water with a sponge or cloth while
traveling to the nearest medical facility.
●If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical atten-
tion immediately.
●If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the clothing and
follow the procedure above if necessary.
●If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Fo llow with milk of magnesia, beaten raw
egg or vegetable oil. Get emerge ncy medical attention immediately.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Washer fluidIf any washer does not work or the
warning message appears on the
multi-information display, the
washer tank may be empty. Add
washer fluid.
NOTICE
■When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all accesso-
ries are turned off.
CAUTION
■When refilling the washer fluid
Do not refill the washer fluid when the engine is hot or running, as the washer fluid
contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces.
■Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the washer fluid tank.