Ac unit Lexus IS300h 2014 User Guide

435
7
Maintenance and care
IS300h_EE(OM53C61E)7-3. Do-it-yourself maintenance
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 4 7 )•Grease
• Conventional wrench (for terminal clamp bolts)
Engine/power con-
trol unit coolant level
(→P. 444)
• “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
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(→P. 440)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (→P. 4 74 )• Fuse with same amperage rating as original
Light bulbs
(→P. 4 7 8 )
• Bulb with same number and wattage rating as original
• Phillips-head screwdriver•Flathead screwdriver
•Wrench
Radiators and con-
denser (→P. 446)
Tire inflation pres-
sure (→P. 4 6 5 )• Tire pressure gauge• Compressed air source
Wa s h e r f l u i d
(→P. 446)• Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)
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4367-3. Do-it-yourself maintenance
IS300h_EE(OM53C61E)
CAUTION
The engine compartment contains many mechanisms and fluids that may move suddenly,
become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions.
■When working on the engine compartment
●Make sure that the “ACCESSORY” or “IGNITION ON” on the multi-information
display and the “READY” indicator are both off.
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, power control unit, radiator, exhaust manifold, etc.
right after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flamma-
ble.
●Take care because brake fluid can harm your hands or 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, consult a doctor.
■When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. (→P. 446)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting in
your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt
in the air.
■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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4397-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53C61E)
■12-volt battery
→P. 4 4 7
Engine compartment
Power control unit coolant reser-
voir (→P. 444)
Engine oil level dipstick
(→P. 4 4 0 )
Engine coolant reservoir
(→P. 444)
Engine oil filler cap
(→P. 4 4 1 )Fuse box (→P. 4 74 )
Wa s h e r f l u i d t a n k (→P. 4 4 6 )
Electric cooling fans
Condenser (→P. 4 4 6 )
Power control unit coolant
radiator (→P. 4 4 6 )
Engine coolant radiator
(→P. 4 4 6 )1
2
3
4
5
6
7
8
9
10
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4447-3. Do-it-yourself maintenance
IS300h_EE(OM53C61E)
■Engine coolant reservoir
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on
the reservoir when the hybrid system is cold.
Reser voir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. (→P. 552)
■Power control unit coolant reservoir
The coolant level is satisfactory if it is between the “F” and “L” lines on the reser-
voir when the hybrid system is cold.
Reser voir cap
“F” line
“L” line
If the level is on or below the “L” line,
add coolant up to the “F” line.
(→P. 5 5 2 )
Coolant
1
2
3
1
2
3
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4457-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53C61E)
■Coolant selection
Only use “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.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized water.
(Minimum temperature: -35°C [-31°F])
For more details about coolant, contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
■If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses, engine/power control unit coolant reservoir caps,
drain cock and water pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional, test the cap and check for leaks in the cooling sys-
tem.
CAUTION
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps or water filler cap.
(→P. 5 5 5 )
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and
antifreeze must be used to provide proper lubrication, corrosion protection and cool-
ing. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
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4777-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53C61E)
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. (→P. 4 7 8 )
●If the replaced fuse blows again, have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
■If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
■When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehicle.
Because certain bulbs are connected to circuits designed to prevent overload, non-gen-
uine parts or parts not designed for this vehicle may be unusable.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than that indicated, or use any other
object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
●Do not modify the fuses or fuse boxes.
■Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring near the
fuse box.
Doing so may cause electric shock, resulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional as soon
as possible.
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4817-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53C61E)
Remove the light bulb.
Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.
After installing the light bulb, turn on
the front turn signal light to visually
check that there is no light leaking
from the bulb base.
Reinstall the fender liner, fasten
the clamp and install the 2 clips.
Install the lower clip by inserting it
with the clip groove held vertically
straight.
4
5
6
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4827-3. Do-it-yourself maintenance
IS300h_EE(OM53C61E)
■Front turn signal lights (vehicles with LED headlights)
For the left side only: Pinch the
clip to remove the washer fluid
filler opening.
Turn the bulb base counterclock-
wise.
Remove the light bulb.
Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.
After installing the light bulb, turn on
the front turn signal light to visually
check that there is no light leaking
from the bulb base.
After replacing the left side bulb, install the washer fluid filler opening to its
original position.
1
2
3
4
5
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4837-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53C61E)
■Rear turn signal lights
Open the trunk, and remove the
2 covers and 2 screws.
When removing the cover, wrap the
tip of the screwdriver with tape to
protect the vehicle from damage.
Push and pull the light unit toward
the rear of the vehicle as shown in
the illustration to remove it.
Apply protective tape to the periph-
eral of the light unit installation sur-
face on the vehicle body, such as the
rear bumper, to protect the vehicle
from damage.
Pushing on the portion A in the illus-
tration toward the rear of the vehicle
will make disengagement of the tabs
easier.
Turn the bulb base counterclock-
wise.
Remove the light bulb.
1
2
3
4
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4847-3. Do-it-yourself maintenance
IS300h_EE(OM53C61E)
Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.
After installing the light bulb, turn on
the rear turn signal light to visually
check that there is no light leaking
from the bulb base.
Align the tabs and push the light
unit toward the front of the vehicle
to install it.
Remove the protective tape applied
to the peripheral of the light unit
installation surface on the vehicle
body.
Install the 2 screws and 2 covers.
5
6
7
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