2015 Lexus ES300h engine

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
CAUTION
■Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-volt bat-
tery in a garage or closed room where there is insufficient ventilation.
■How to recharge the 12-volt battery
Only perform a slow charge (5 A or less). The 12-volt 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. Get emergency medical attention imme-
diately.
NOTICE
■When recharging the 12-volt battery
Never recharge the 12-volt battery while the engine is running. Also, be sure all
accessories are turned off.
■When adding distilled water
Avoid overfilling. Water spilled during 12-volt battery recharging may cause corro-
sion.

ES350_300h_OM_OM33B36U_(U)
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7
Maintenance and care
If any washer does not work or the
warning message appears on the
multi-information display, the
washer tank may be empty. Add
washer fluid.
Wa s h e r f l u i d
CAUTION
■When adding washer fluid
Do not add washer fluid when the engine is hot or running ating> 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 bottle.

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
■How to initialize the tire pressure warning system
Park the vehicle in a safe place and turn the “START STOP
ENGINE” <“POWER”> switch off.
Initialization cannot be performed while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. ( →P. 712)
Make sure to adjust the tire pressure to the specified cold tire inflation pres-
sure level. The tire pressure warning system will operate based on this pressure
level.
Turn the “START STOP ENGINE” <“POWER”> switch to
IGNITION ON mode.
Press and hold the tire pres-
sure warning reset switch until
the tire pressure warning light
blinks slowly 3 times.
Wait for a few minutes with the “START STOP ENGINE”
<“POWER”> switch in IGNITION ON mode and then turn
the “START STOP ENGINE” <“POWER”> switch off.
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ES350_300h_OM_OM33B36U_(U)
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7
Maintenance and care
◆Registering ID codes
The tire pressure warning valve and transmitter is equipped with a
unique ID code. When replacing a tire pressure warning valve and
transmitter, it is necessary to register the ID code. Have the ID code
registered by your Lexus dealer.
■When to replace your vehicle’s tires
Tires should be replaced if:
●You have tire damage such as cuts, splits, cracks deep enough to expose the fabric,
and bulges indicating internal damage
●A tire goes flat repeatedly or cannot be properly repaired due to the size or loca-
tion of a cut or other damage
If you are not sure, consult with your Lexus dealer.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered, the
tire pressure warning system will not work properly. After driving for about 20 min-
utes, the tire pressure warning light blinks for 1 minute and stays on to indicate a sys-
tem malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even if it has sel-
dom or never been used or damage is not obvious.
■Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation pressure
checks. Make sure to check tire inflation pressure as part of your routine of daily
vehicle checks.
■When rotating the tires
Make sure that the “START STOP ENGINE” <“POWER”> switch is off. If the tires are
rotated while the “START STOP ENGINE” <“POWER”> switch is in IGNITION ON
mode, the tire position information will not be updated.
If this accidentally occurs, either turn the “START STOP ENGINE” <“POWER”>
switch to off and then to IGNITION ON mode, or initialize the system after
checking that the tire pressure is properly adjusted.

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
■The initialization operation
●Make sure to carry out initialization after adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initialization or tire inflation
pressure adjustment.
●If you have accidentally turned the “START STOP ENGINE” <“POWER”> switch
off during initialization, it is not necessary to press the reset switch again as initial-
ization will restart automatically when the “START STOP ENGINE” <“POWER”>
switch has been turned to IGNITION ON mode for the next time.
●If you accidentally press the reset switch when initialization is not necessary, adjust
the tire inflation pressure to the specified level when the tires are cold, and conduct
initialization again.
■When initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases, the
settings have not been recorded and the system will not operate properly. If
repeated attempts to record tire inflation pressure settings are unsuccessful, have
the vehicle inspected by your Lexus dealer.
●When operating the tire pressure warning reset switch, the tire pressure warning
light does not blink 3 times.
●After carrying out the initialization procedure, the tire pressure warning light blinks
for 1 minute then stays on after driving for 20 minutes.

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
Air conditioning filter
Turn the “START STOP ENGINE” <“POWER”> switch off.
Open the glove box. Lift and
remove the partition.
Remove the glove box cover.
Remove the filter cover.
The air conditioning filter must be changed regularly to maintain air
conditioning efficiency.
Removal method
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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
Checking and replacing fuses
Turn the “START STOP ENGINE” <“POWER”> switch off.
After a system failure, see “Fuse layout and amperage ratings” for
details about which fuse to check. (→P. 589)
Open the Fuse box cover.
XEngine compartment (type A fuse box)
Push the tab in and lift the lid off.
XEngine compartment (type B fuse box) (hybrid vehicles only)
Push the tab in and lift the lid off.
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
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ES350_300h_OM_OM33B36U_(U)
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7
Maintenance and care
■Engine compartment (type A fuse box)
●Fuse block
●Fuse block on the back of the cover
Fuse layout and amperage ratings