2012 Lexus ES350 engine

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4-3. Do-it-yourself maintenance
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Maintenance and care
ES350_U
Power steering fluid■ Fluid level
The fluid level should be within the appropriate range.
Full (when cold)
Add fluid (when cold)
Full (when hot)
Add fluid (when hot)
Hot: Vehicle has been driven around 50 mph (80 km/h) for 20 min- utes, or slightly longer in frigid temperatures. (Fluid tempera-
ture, 140 °F - 175 °F [60 °C - 80 °C])
Cold: Engine has not been run for about 5 hours. (Room tempera- ture, 50 °F - 85 °F [10 °C - 30 °C])
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 refilling, it may indicate a serious problem.

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4-3. Do-it-yourself maintenance
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Maintenance and care
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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.
Te r m i n a l s
Hold-down clamp
■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.
Open and close any of the doors.
Restart the engine.
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
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Maintenance and care
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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 label of the washer fluid bottle.

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4-3. Do-it-yourself maintenance
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Initializing the tire pressure warning system■ The tire pressure warning system must be initialized in the following
circumstances:
● When changing the tire inflation pressure by changing traveling
speed or load weight, etc.
When the tire pressure warning system is initialized, the current tire
inflation pressure is set as the pressure benchmark.
■ How to initialize the tire pressure warning system
Park the vehicle in safe place and turn the “ENGINE START
STOP” switch OFF.
While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. ( →P. 493)
Make sure to adjust the tire pressure to the specified cold tire inflation
pressure level. The tire pressure warning system will operate based on
this pressure level.
Turn the “ENGINE START STOP” switch to IGNITION ON
mode.
Push and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.
Wait for a few minutes with the IGNITION ON mode, and then
turn the “ENGINE START STOP” switch OFF.
STEP1
STEP2
STEP3
STEP4
STEP5

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4-3. Do-it-yourself maintenance
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Maintenance and care
ES350_U
Air conditioning filter
The air conditioning filter must be cleaned or changed regularly to main-
tain air conditioning efficiency.
■ Replacement method
Turn the “ENGINE START STOP” switch OFF.
Open the glove box. Remove
the glove box cover.
Remove the filter cover.
Remove the filter.
Be sure that the correct side of
the filter faces up when installing
it.
STEP1
STEP2
STEP3
STEP4

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4-3. Do-it-yourself maintenance
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Maintenance and care
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Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown.
If this happens, check and replace the fuses as necessary.
Turn the “ENGINE START STOP” switch OFF.
Remove the engine compartment cover. ( →P. 3 7 8 )
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the lid
off.
Driver's side instrument panel Remove the lid.
After a system failure, see “Fuse layout and amperage ratings”
(→ P. 412) for details about which fuse to check.STEP1
STEP2
STEP3
STEP4

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Fuse layout and amperage ratings■ Engine compartment
FuseAmpereCircuit
1PSB30 APre-collision seat belt
2H-LP CLN30 A
3P- P / S E AT30 APo w e r s e a t
4RR DEF50 ARear window defogger
5ABS NO.230 AAnti-lock brake system, vehicle stabil-
ity control system
6FA N M A I N50 AElectric cooling fans
7ABS NO.150 AAnti-lock brake system, vehicle stabil-
ity control system
8HTR50 AAir conditioning system
9RR FOG10 A
10ALT-CDS10 AAlternator condenser
11ST30 AStarting system

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4-3. Do-it-yourself maintenance
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Headlight aim (vehicles with discharge headlights)
■Vertical movement adjusting bolts
Adjustment bolt A
Adjustment bolt B
■ Before checking the headlight aim
Make sure the vehicle has a full tank of gas and the area around
the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.
■ Adjusting the headlight aim
Remove the engine compartment cover. ( →P. 3 7 8 )
Turn bolt A in either direction
using a Phillips-head screw-
driver.
Remember the turning direction
and the number of turns in mind.
STEP1
STEP2
STEP3
STEP4
STEP1
STEP2