brake Lexus ES300h 2017 Workshop Manual

436
ES300h_OM_OM33C75U_(U)7-1. Maintenance and care
NOTICE
■To prevent paint deterioration and corrosion on the body and components (aluminum
wheels etc.)
●Wash the vehicle immediately in the following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on the paint surface
• If dead insects, insect droppings or bird droppings are present on the paint surface
• After driving in an area contaminated wi
th soot, oily smoke, mine dust, iron pow-
der or chemical substances
• If the vehicle becomes heavily soiled with dust or mud
• If liquids such as benzene and gasoline are spilled on the paint surface
●If the paint is chipped or scratched, have it repaired immediately.
●To prevent the wheels from corroding, remove any dirt and store in a place with low
humidity when storing the wheels.
■Cleaning the exterior lights
●Wash carefully. Do not use organic substances or scrub with a hard brush.
This may damage the surfaces of the lights.
●Do not apply wax to the surfaces of the lights.
Wax may cause damage to the lenses.
■When using an automatic car wash (vehicles with rain-sensing windshield wipers)
Set the wiper switch to the off position.
If the wiper switch is in “AUTO”, the wipers may operate and the wiper blades may be
damaged.
■When cleaning the windshield
Raise the wipers in line with the windshield. ( →P. 2 8 6 )
Failure to do so may result in damage to the wipers and/or the hood.
■When using a high pressure car wash
Do not bring the nozzle tip close to boots (rubber or resin manufactured cover), con-
nectors or the following parts. The parts may be damaged if they come into contact
with high-pressure water.
●Traction related parts
●Steering parts
●Suspension parts
●Brake parts

443
ES300h_OM_OM33C75U_(U)7-2. Maintenance
7
Maintenance and care
General maintenance
Listed below are the general maintenance items that should be performed at
the intervals specified in the “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommende
d that any problem you notice should
be brought to the attention of your Lex us dealer or qualified service shop for
advice.
Engine compartment
ItemsCheck points
Brake fluidIs the brake fluid at the correct level? (→ P. 4 5 9 )
Engine/power control unit
coolantIs the engine/power control unit coolant at the correct
level? ( →P. 4 5 7 )
Engine oilIs the engine oil at the correct level? ( →P. 4 5 3 )
Exhaust systemThere should not be any fumes or strange sounds.
Radiator/condenserThe radiator and condenser should be free from for-
eign objects. ( →P. 4 5 8 )
Wa s h e r f l u i dIs there sufficient washer fluid? (→ P. 4 6 0 )
Tr u n k
ItemsCheck points
12-volt batteryCheck the connections.(→ P. 4 6 1 )

444
ES300h_OM_OM33C75U_(U)7-2. Maintenance
Vehicle interior
ItemsCheck points
Accelerator pedal• The accelerator pedal should move smoothly (with-
out uneven pedal effort or catching).
Hybrid transmission “Park”
mechanism• When parked on a slope and the shift lever is in P, is
the vehicle securely stopped?
Brake pedal
• Does the brake pedal move smoothly?
• Does the brake pedal have appropriate clearance
from the floor? ( →P. 5 4 6 )
• Does the brake pedal have the correct amount of free play? (→ P. 5 4 6 )
Brakes
• The vehicle should not pull to one side when the
brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the brakes are applied.
Head restraints• Do the head restraints move smoothly and locksecurely?
Indicators/buzzers• Do the indicators and buzzers function properly?
Lights• Do all the lights come on?
• Are the headlights aimed correctly?
Parking brake• Does the parking brake pedal move smoothly?
• When parked on a slope and the parking brake is on,is the vehicle securely stopped?
Seat belts• Do the seat belts operate smoothly?
• The seat belts should not be damaged.
Seats• Do the seat controls operate properly?
Steering wheel
• Does the steering wheel rotate smoothly?
• Does the steering wheel have the correct amount offree play?
• There should not be any strange sounds coming from the steering wheel.

447
ES300h_OM_OM33C75U_(U)7-3. Do-it-yourself maintenance
7
Maintenance and care
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections.
ItemsParts and tools
12-volt battery con-
dition (
→P. 4 6 1 )•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(→ P. 4 5 9 )
• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power con-
trol unit coolant level
(→ P. 4 5 7 )
• “Toyota Super Long Life Coolant” or a similar high quality
ethylene glycol-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 coolant)
Engine oil level
(→ P. 4 5 3 )
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (→ P. 4 8 3 )• Fuse with same amperage rating as original
Light bulbs
(→ P. 4 8 6 )
• Bulb with same number and wattage rating as original
• Phillips-head screwdriver
•Flathead screwdriver•Wrench
Radiator and con-
denser ( →P. 4 5 8 )
Tire inflation pres-
sure ( →P. 4 74 )• Tire pressure gauge• Compressed air source
Wa s h e r f l u i d
(→ P. 4 6 0 )• Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

451
ES300h_OM_OM33C75U_(U)7-3. Do-it-yourself maintenance
7
Maintenance and care
Engine compartment
■12-volt battery
→
P. 4 6 1
Wa s h e r f l u i d t a n k ( →P. 4 6 0 )
Fuse boxes ( →P. 4 8 3 )
Power control unit coolant
reservoir ( →P. 4 5 7 )
Engine oil level dipstick (→ P. 4 5 3 )
Engine oil filler cap ( →P. 4 5 4 ) Engine coolant reservoir
(→ P. 4 5 7 )
Brake fluid reservoir ( →P. 4 5 9 )
Power control unit coolant
radiator ( →P. 4 5 8 )
Electric cooling fans
Condenser ( →P. 4 5 8 )
Engine coolant radiator (→ P. 4 5 8 )1
2
3
4
5
6
7
8
9
10
11

ES300h_OM_OM33C75U_(U)
4597-3. Do-it-yourself maintenance
7
Maintenance and care
■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
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel
WA R N I N G
■When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damage painted surfaces. If
fluid gets on your hands or in your eyes, fl ush the affected area with clean water imme-
diately. If you still experien ce 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 out or
when the fluid level in the accumulator is high.
If the reservoir needs frequent ref illing, there may be a serious problem.

499
ES300h_OM_OM33C75U_(U)8-1. Essential information
8
When trouble arises
If your vehicle has to be stopped in an emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N.
XIf the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the hybrid system.
XIf the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle speed as
much as possible.
To stop the hybrid system, press and
hold the power switch for 2 consec-
utive seconds or more, or press it
briefly 3 times or more in succes-
sion.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop the vehicle in
the normal way, stop the vehicle using the following procedure:
1
2
3
4
3
Press and hold for 2 seconds or more
or press briefly 3 times or more
4
WA R N I N G
■If the hybrid system has to be turned off while driving
Power assist for the steering wheel will be lost, making the steering wheel heavier to
turn. Decelerate as much as possible
before turning off the hybrid system.
5

500
ES300h_OM_OM33C75U_(U)8-2. Steps to take in an emergency
If your vehicle needs to be towed
The following may indicate a problem with your hybrid transmission. Contact
your Lexus dealer or commercial towing service before towing.
●A warning message for the hybrid system is shown on the multi-information
display and the vehicle does not move.
●The vehicle makes an abnormal sound.
Do not tow with a sling-type truck to
prevent body damage.
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or commercial towing se rvice, using a wheel-lift type truck or
flat bed truck.
Use a safety chain system for all towing , and abide by all state/provincial and
local laws.
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck
Towing with a wheel-lift type truck
XFrom the frontXFrom the rear
Release the parking brake. Use a towing dolly under the front
wheels.

5018-2. Steps to take in an emergency
ES300h_OM_OM33C75U_(U)
8
When trouble arises
If your vehicle is transported by a flat
bed truck, it should be tied down at the
locations shown in the illustration.
If you use chains or cables to tie down
your vehicle, the angles shaded in black
must be 45 °.
Do not overly tighten the tie downs or
the vehicle may be damaged.
If a tow truck is not available in an emergency, your vehicle may be temporarily
towed using cables or chains secured to the emergency towing eyelets. This
should only be attempted on hard surf aced roads for short distances at under
18 mph (30 km/h).
A driver must be in the vehicle to steer and operate the brakes. The vehicle’s
wheels, drive train, axles, steering and brakes must be in good condition.
Using a flat bed truck
Emergency towing

5028-2. Steps to take in an emergency
ES300h_OM_OM33C75U_(U)
Take out the towing eyelet. (→P. 5 1 6 )
Remove the eyelet cover using a flat-
head screwdriver.
To protect the bodywork, place a rag
between the screwdriver and the vehi-
cle body as shown in the illustration.
Insert the towing eyelet into the hole
and tighten partially by hand.
Tighten down the towing eyelet
securely using a wheel nut wrench.
Securely attach cables or chains to the towing eyelet.
Take care not to damage the vehicle body.
Enter the vehicle being towed and start the hybrid system.
If the hybrid system does not start, turn the power switch to ON mode.
Shift the shift lever to N and release the parking brake.
When the shift lever cannot be shifted: →P. 1 7 8
Emergency towing procedure
1
2
3
4
5
6
7