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4-1. Maintenance and care
RX350/270_EE
NOTICE
■To prevent paint deterioration and corrosion on the body and components (alu-
minum wheels etc.)
●Wash the vehicle immediately in the following cases:
• After driving near the sea coast
• After driving on salted roads
• If you see coal tar or tree sap on the paint surface
• If dead insects, insect droppings or bird droppings are present on the paint
surface
• After driving in an area contaminated with soot, oily smoke, mine dust, iron
powder or chemical substances
• If the vehicle becomes heavily soiled by 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 on the surfaces of the lights.
Wax may cause damage to the lenses.
■To prevent damage to the windshield wiper arms
When lifting the wiper arms away from the windshield, pull the driver side wiper
arm upward first, and repeat for the passenger side. When returning the wipers to
their original position, do so from the passenger side first.
■When using an automatic car wash
Set the wiper switch to the off position.
If the wiper switch is in , the wipers may operate and the wiper blades may
be damaged.
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4-1. Maintenance and care
RX350/270_EE
■Caring for leather areas
Lexus recommends cleaning the interior of the vehicle at least twice a year to main-
tain the quality of the vehicle’s interior.
■Shampooing the carpets
There are several commercial foaming-type cleaners available. Use a sponge or
brush to apply the foam. Rub in overlapping circles. Do not apply water. Excellent
results are obtained by keeping the carpet as dry as possible.
■Seat belts
Clean with mild soap and lukewarm water using a cloth or sponge. Also check the
belts periodically for excessive wear, fraying or cuts.
CAUTION
■Water in the vehicle
●Do not splash or spill liquid in the vehicle.
●Do not get any of the SRS components or wiring in the vehicle interior wet.
(→P. 1 3 2 )
An electrical malfunction may cause the airbags to deploy or not function prop-
erly, resulting in death or severe injury.
■Cleaning the interior (especially instrument panel)
Do not use polish wax or polish cleaner. The instrument panel may reflect off the
windshield, obstructing the driver's view and leading to an accident, resulting in
death or serious injury.
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4-1. Maintenance and care
4
Maintenance and care
RX350/270_EE
NOTICE
■Cleaning detergents
●Do not use the following types of detergent, as they may discolor the vehicle inte-
rior or cause streaks or damage to painted surfaces:
• Non-seat portions: Organic substances such as benzene or gasoline, alkaline
or acidic solutions, dye, or bleach
• Seats: Acidic solutions, such as thinner, benzene, or alcohol
●Do not use polish wax or polish cleaner. The instrument panel's or other interior
part’s painted surface may be damaged.
■Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of leather
surfaces:
●Remove any dust or dirt from leather surfaces immediately.
●Do not expose the vehicle to direct sunlight for extended periods of time. Park
the vehicle in the shade, especially during summer.
●Do not place items made of vinyl, plastic, or that contain wax on the upholstery, as
they may stick to the leather surface if the vehicle interior heats up significantly.
■Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes into
contact with electrical components under the floor of vehicle. Water may also
cause the body to rust.
■Cleaning the inside of the rear window
●Do not use glass cleaner to clean the rear window, as this may cause damage to
the rear window defogger heater wires or antenna. Use a cloth dampened with
lukewarm water to gently wipe the window clean. Wipe the window in strokes
running parallel to the heater wires or antenna.
●Be careful not to scratch or damage the heater wires or antenna.
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4-3. Do-it-yourself maintenance
4
Maintenance and care
RX350/270_EE
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precaution:
■When working on the engine compartment
●Keep hands, clothing and tools away from the moving fans and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driv-
ing 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 or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
●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 “ENGINE START STOP” switch is off.
With the “ENGINE START STOP” switch in IGNITION 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. 4 7 8 )
■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
4
Maintenance and care
RX350/270_EE
CAUTION
■When raising your vehicle
Make sure to observe the following precautions to reduce the possibility of death or
serious injury:
●When using a floor jack, follow the instructions of the manual provided with the
jack.
●Do not use the jack that was supplied with your vehicle.
●Do not put any part of your body underneath the vehicle when it is supported
only by the floor jack.
●Always use floor jack and/or automotive jack stands on a solid, flat, level surface.
●Do not start the engine while the vehicle is supported by the floor jack.
●Stop the vehicle on level, firm ground, firmly set the parking brake and shift the
shift lever to P.
●Make sure to set the floor jack properly at the jack point.
Raising the vehicle with an improperly positioned floor jack will damage the vehi-
cle and may cause the vehicle to fall off the floor jack.
●Do not raise the vehicle while someone is in the vehicle.
●When raising the vehicle, do not place any objects on top of or underneath the
floor jack.
●Vehicles with electronically modulated air suspension:
Be sure to turn off the height control and stop the engine. Otherwise, the vehicle
height may change due to the automatic leveling function. (→P. 2 5 6 )
●Lift up the vehicle using a floor jack such as
the one shown in the illustration.
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468
4-3. Do-it-yourself maintenance
RX350/270_EE
Engine compartment
RX270
Engine oil filler cap
(→P. 4 74 )
Engine oil level dipstick
(→P. 4 7 2 )
Battery (→P. 4 7 9 )
Fuse box (→P. 504)Engine coolant reservoir
(→P. 477)
Condenser (→P. 4 7 8 )
Radiator (→P. 4 7 8 )
Electric cooling fans
Washer fluid tank (→P. 4 8 2 )
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469
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX350/270_EE
RX350
Engine oil filler cap
(→P. 4 74 )
Engine oil level dipstick
(→P. 4 7 2 )
Battery (→P. 4 7 9 )
Fuse box (→P. 504)Engine coolant reservoir
(→P. 477)
Condenser (→P. 4 7 8 )
Radiator (→P. 4 7 8 )
Electric cooling fans
Washer fluid tank (→P. 4 8 2 )
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4-3. Do-it-yourself maintenance
RX350/270_EE
Radiator and condenser
Check the radiator and condenser and clear away any foreign objects.
If any of the above parts are extremely dirty or you are not sure of their
condition, have your vehicle checked by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, radiator cap, 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 systems.
CAUTION
■When the engine is hot
Do not remove the radiator cap.
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 engine 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 cooling. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious inju-
ries, such as burns.
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