Page 427 of 609
406
4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
IS220d and IS200d
*: For right-hand drive vehicles:
They are located on the opposite side of the engine compartment.
Battery (P. 415)
Engine oil level dipstick
(P. 409)
Engine oil filler cap
(P. 410)
Fuse boxes (P. 438)
Washer fluid tank(P. 420)Electric cooling fans
Condenser (P. 415)
Intercooler (P. 415)
Radiator (P. 415)
Engine coolant reservoir
(P. 413)
*
*
Page 436 of 609
415
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_EE
Radiator, condenser and intercooler
Check the radiator, condenser and intercooler and clear any foreign
objects.
If any of the above parts are extremely dirty or you are not sure of
their condition, have your vehicle checked by any authorized
Lexus dealer or repairer, or another duly qualified and equipped
professional.
Battery
Check the battery as follows.
The meanings of each caution symbol on the top of the battery are
as follows:
CAUTION
When the engine is hot
Do not touch the radiator, condenser or intercooler as they may be hot and
cause serious injuries, such as burns.
No smoking, no naked
flames, no sparksBattery acid
Shield eyesNote operating
instructions
Keep away from chil-
drenExplosive gas
Page 437 of 609
416
4-3. Do-it-yourself maintenance
IS250/220d/200d_EEBattery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
Checking battery fluid
Check that the level is between
“UPPER LEVEL” and
“LOWER LEVEL”.
“UPPER LEVEL”
“LOWER LEVEL”
If the fluid level is at or below
“LOWER LEVEL”, add dis-
tilled water.
Page 439 of 609

418
4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
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 discon-
nect the ground cable.
Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the battery.
After recharging/reconnecting the battery
In some cases, the engine may not start. Follow the procedure below to ini-
tialize the system.
Shift the shift lever to P (automatic transmission) or depress the
brake pedal with the shift lever in N (manual transmission), and
turn the “ENGINE START STOP” switch OFF.
Open and close any of the doors.
Start the engine. (If the engine does not start first time, repeat the
procedure.)
If the engine will not start even after multiple attempts at the above method,
contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
STEP1
STEP2
STEP3
Page 440 of 609

419
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_EE
CAUTION
Chemicals in the battery
A battery contains poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death
or serious injury, take the following precautions while working on or near
the 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 safely 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.
Emergency measures regarding electrolyte
If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical 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
attention 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. Get emergency medical attention
immediately.
Page 441 of 609
420
4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
Washer fluid
If any washer does not work or
the warning message appears
on the multi-information dis-
play, 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
accessories are turned off.
When adding distilled water
Avoid overfilling. Water spilled during battery recharging may cause corro-
sion.
CAUTION
When adding washer fluid
Do not add washer fluid when the engine is hot or running, as 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 label of the washer fluid bot-
tle.
Page 455 of 609
434
4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
Electronic key battery
Page 456 of 609
435
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_EE
Replace the battery with a new one if it is discharged.
You will need the following items:
Flathead screwdriver
Small Phillips-head screwdriver
Lithium battery (CR1632)
Replacing the battery
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2
STEP3