2014 Lexus ES300h fluid

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ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
XGasoline vehicles (2GR-FE engine)
Washer fluid tank (→P. 6 9 7 )
Engine oil filler cap (→P. 686)
Engine oil level dipstick (→P. 6 8 4 )
Engine coolant reservoir (→P. 689) Brake fluid reservoir
(→P. 692)
Fuse box ( →P. 721)
12-volt battery ( →P. 693)
Electric cooling fans
Condenser ( →P. 6 9 1 )
Radiator ( →P. 6 9 1 )1
2
3
4
5
6
7
8
9
10

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ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
XHybrid vehicles (2AR-FXE engine)
■12-volt battery (hybrid vehicles)
→P. 6 9 8
Washer fluid tank ( →P. 6 9 7 )
Fuse boxes ( →P. 7 2 1 )
Power control unit coolant
reservoir ( →P. 689)
Engine oil level dipstick (→P. 6 8 4 )
Engine oil filler cap (→P. 686) Engine coolant reservoir
(→P. 689)
Brake fluid reservoir (→P. 692)
Power control unit coolant
radiator ( →P. 6 9 1 )
Electric cooling fans
Condenser ( →P. 6 9 1 )
Engine coolant radiator (→P. 6 9 1 )1
2
3
4
5
6
7
8
9
10
11

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ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
■Checking fluid level
The brake fluid level should be between the “MAX” and “MIN” lines on
the tank.
■Adding fluid
Make sure to check the fluid type and prepare the necessary item.
■Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of braking efficiency.
Use only newly opened brake fluid.
Brake fluid
XGasoline vehiclesXHybrid vehicles
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel
CAUTION
■When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damage painted sur-
faces. If fluid gets on your hands or in your eyes, flush the affected area with clean
water immediately. If you still experience discomfort, see a doctor.

ES350_300h_OM_OM33A60U_(U)
6936-3. Do-it-yourself maintenance
6
Maintenance and care
Check the 12-volt battery as follows.
■12-volt battery exterior
Make sure that the 12-volt 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 12-volt battery fluid
Check that the level is between the “UPPER LEVEL” and “LOWER
LEVEL” lines.“UPPER LEVEL” line
“LOWER LEVEL” line
If the fluid level is at or below the
“LOWER LEVEL” line, add distilled
water.
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 out
or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, there may be a serious problem.
12-volt battery (gasoline vehicles)
1
2
1
2

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ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
■Adding distilled waterRemove the vent plug.
Add distilled water.
If the “UPPER LEVEL” line cannot
be seen, check the fluid level by
looking directly at the cell.
Put the vent plug back on and close it securely.
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable
and explosive. Therefore, observe the following before recharging:
●If recharging with the 12-volt 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 12-volt battery.
1
Low O.K.2
3

ES350_300h_OM_OM33A60U_(U)
6976-3. Do-it-yourself maintenance
6
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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7
When trouble arises
7-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle continually points higher
than normal.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●Engine missing, stumbling or running roughly
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches the
floor
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Lexus dealer as soon as pos-
sible.
Visible symptoms
Audible symptoms
Operational symptoms

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7
When trouble arises
7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
*: Brake system warning buzzer (hybrid vehicles): When there is a possible problem that could affect braking performance, the
warning light will come on and a warning buzzer will sound.
Parking brake engaged warning buzzer:
→ P. 7 76
■Brake system warning light operation (hybrid vehicles)
Although depressing the brake pedal repeatedly may cause the red brake system
warning light to turn on and the buzzer to sound, this does not indicate a malfunction.
Calmly perform the following actions if any of the warning lights comes
on or flashes. If a light comes on or flashes, but then goes off, this does
not necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicle inspected by your Lexus dealer.
Stop the vehicle immediately. Continuing to drive the vehicle may
be dangerous.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer)*
• Low brake fluid
• Malfunction in the brake booster system
This light also comes on when the parking brake is not released.
If the light turns off after the parking brake is fully released the
system is operating normally.