2012 Lexus CT200h engine

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4-2. Maintenance
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Maintenance and care
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Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
Engine missing, stumbling or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (However, water dripping from the air
conditioning system after use is normal.)
Change in exhaust sound (This may indicate a dangerous carbon monox-
ide leak. Drive with the windows open and have the exhaust system
checked immediately.)
Flat-looking tires, excessive tire squeal when cornering, uneven tire
wear
Vehicle pulls to one side when driven straight on a level road
Strange noises related to suspension movement
Loss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one side when braking
Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as
soon as possible. Your vehicle may need adjustment or repair.
CAUTION
If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and
possible serious injury or death.
Handling of the 12-volt battery
12-volt battery posts, terminals and related accessories contain lead and lead
compounds which are known to cause brain damage. Wash your hands after
handling. (P. 508)

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4-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct
procedure as given in these sections.
ItemsParts and tools
12-volt battery condition (P.
508)• Grease
• Conventional wrench
(for terminal clamp bolts)
Engine/power control unit cool-
ant level (P. 503)
• “Toyota Super Long Life Cool-
ant” or a similar high quality
ethylene glycol-based non-sili-
cate, non-amine, non-nitrite and
non-borate coolant with long-
life hybrid organic acid technol-
ogy
“Toyota Super Long Life Cool-
ant” is pre-mixed with 50%
coolant and 50% deionized
water.
Fl(dlfddi

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4-3. Do-it-yourself maintenance
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Maintenance and care
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ItemsParts and tools
Engine oil level (P. 498)
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel
• Funnel (used only for adding
engine oil)
Fuses (P. 532)• Fuse with same amperage rating
as original
Light bulbs (P. 546)
• Bulb with same number and
wattage rating as original
• Phillips-head screwdriver
• Flathead screwdriver
•Wrench
Radiator and condenser (P. 5 0 6)
Tire inflation pressure (P. 519)• Tire pressure gauge
• Compressed air source
Washer fluid (P. 507)
• Water or washer fluid contain-
ing antifreeze (for winter use)
• Funnel (used only for adding
water or washer fluid)

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4-3. Do-it-yourself maintenance
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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 indicator on the “POWER” switch 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 flammable.
Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. 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 auto-
matically start to run if the air conditioning is on and/or the coolant tempera-
ture is high. (P. 506)
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.

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4-3. Do-it-yourself maintenance
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Maintenance and care
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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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Engine compartment
12-volt battery
P. 5 0 8
Engine coolant reservoir
(P. 503)
Engine oil level dipstick
(P. 498)
Engine oil filler cap (P.
498)
Power control unit coolantFuse box (P. 532)
Radiator (P. 506)
Condenser (P. 506)
Electric cooling fans
Washer fluid tank (P.
507)

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Maintenance and care
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Engine compartment cover
Removing the engine compartment cover
Installing the clips
Push up center portion
Insert
Press
NOTICE
After installing an engine compartment cover
Make sure that the cover is securely installed in its original position.

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Engine oil
With the engine at operating temperature and turned off, check the
oil level on the dipstick.
Checking the engine oil
Park the vehicle on level ground. After warming up the
engine and turning off the hybrid system, wait more than 5
minutes for the oil to drain back into the bottom of the
engine.
Holding a rag under the end,
pull the dipstick out.
Wipe the dipstick clean.
Flat dipstick: Reinsert the dipstick fully.
Non-flat dipstick: Reinsert the
dipstick fully with its protrud-
ing areas ( in the illustration)
pointing towards engine.
Holding a rag under the end, pull the dipstick out and check
the oil level.
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