2010 Lexus HS250h maintenance

402
4-1. Maintenance and care
Cleaning and protecting the vehicle exterior
■Automatic car washes
●Fold the mirrors before washing the vehicle. Start washing from the front of the
vehicle. Make sure to extend the mirrors before driving.
●Roof antenna, rear spoiler (if equipped) may not be washable in some automatic
car washes. There may also be an increased risk of damage to vehicle.
●Brushes used in automatic car washes may scratch the vehicle surface and
harm your vehicle’s paint.
■High pressure car washes
●Do not allow the nozzles of the car wash to come within close proximity of the
windows.
●Before using the car wash, check that the fuel filler door on your vehicle is
closed properly.
Perform the following to protect the vehicle and maintain it in prime condi-
tion:
● Working from top to bottom, liber ally apply water to the vehicle
body, wheel wells and underside of the vehicle to remove any dirt
and dust.
● W
ash the vehicle body using a sponge or soft cloth, such as a
chamois.
● F
or hard-to-remove marks, use car wash soap and rinse thor-
oughly with water.
● W
ipe away any water.
●W
ax the vehicle when the waterproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle
body is cool.

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4-1. Maintenance and care
4
Maintenance and care
■When using a car wash
If the door handle becomes wet while the electronic key is within the effective
range, the door may lock and unlock repeatedly. Place the key in a position 6 ft. (2
m) or more separate from the vehicle while the vehicle is being washed. (Take care
to ensure that the key is not stolen.)
■Aluminum wheels
Remove any dirt immediately by using a neutral detergent. Do not use hard brushes
or abrasive cleaners. Do not use strong or harsh chemical cleaners. Use the same
mild detergent and wax as used on the paint.
■Bumpers and side moldings
Do not scrub with abrasive cleaners.
■Side windows water-repellent coating
●The following precautions can extend the effectiveness of the water-repellent
coating.
• Remove any dirt, etc. from the side windows regularly.
• Do not allow dirt and dust to accumulate on the windows for a long period.
Clean the windows with a soft, damp cloth as soon as possible.
• Do not use wax or glass cleaners that contain abrasives when cleaning the windows.
• Do not use any metallic objects to remove condensation build up.
●When the water-repellent performance has become insufficient, the coating
can be repaired. Contact your Lexus dealer.
■Outside rear view mirror rain -clearing coating (if equipped)
Observe the following precautions in order to retain the rain-clearing properties of
the mirrors:
●Clean the mirrors using a car shampoo or glass cleaner that does not contain
silicone or an abrasive compound, and rinse thoroughly with water.
●Allow the mirrors to be exposed to direct sunlight for 1 to 2 days.

404
4-1. Maintenance and care
■To prevent paint deterioration and body corrosion
●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 with soot, oily smoke, mine dust, iron
powder 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.
CAUTION
■When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may cause
the electrical components etc. to catch fire.
■Precautions regarding the exhaust pipe
Exhaust gases cause the exhaus t pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has cooled suffi-
ciently, as touching a hot exhaust pipe can cause burns.

405
4-1. Maintenance and care
4
Maintenance and care
NOTICE
■To protect your vehicle’s painted surfaces
Do not use organic cleaners such as benzene and gasoline.
■Cleaning the exterior lights
●Wash carefully. Do not use organic substances or scrub with a hard brush. 
This may damage the su rface 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 (vehicle s 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.
Off

406
4-1. Maintenance and care
Cleaning and protecting the vehicle interior
The following procedures will help protect your vehicle’s interior and keep
it in top condition:
■ Protecting the vehicle interior
Remove dirt and dust using a vacuum cleaner
. Wipe dirty surfaces
with a cloth dampened with lukewarm water.
■ Cleaning the leather ar
eas
● R
emove dirt and dust using a vacuum cleaner.
●W
ipe off any excess dirt and dust with a soft cloth dampened with
diluted detergent.
Use a diluted water solution of appr
oximately 5% neutral wool
detergent.
● W
ring out any excess water from the cloth and thoroughly wipe
off all remaining traces of detergent.
● W
ipe the surface with a dry, soft cloth to remove any remaining
moisture. Allow the leather to dry in a shaded and ventilated area.
■ Cleaning the synthetic leather ar
eas
● R
emove loose dirt using a vacuum cleaner.
●A
pply a mild soap solution to th e synthetic leather using a sponge
or soft cloth.
● Allo
w the solution to soak in fo r a few minutes. Remove the dirt
and wipe off the solution with a clean, damp cloth.

407
4-1. Maintenance and care
4
Maintenance and care
■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
brus
h to apply the foam. Rub in overlappin g circles. Do not use water. Wipe dirty
surfaces and let them dry. 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, such as on the floor, in the hybrid bat-
tery (traction battery) air vents, and in the trunk. 
Doing so may cause the hybr id battery, electrical components, etc. to malfunc-
tion or catch fire.
●Do not get any of the SRS components or wiring in the vehicle interior wet. 
(  P. 105) 
An electrical malfunction may cause the airbags to deploy or not function prop-
erly, resulting in death or serious injury.

408
4-1. Maintenance and care
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, and bleach
●Seats: Alkaline or acidic solutions, such as thinner, benzene, and alcohol
■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 pe riods of time. Park
the vehicle in the shade, especially during summer.
●Do not place items made of vinyl, plastic, or containing 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 such as the audio system above or under the
floor of the 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.

409
4
Maintenance and care
4-2. Maintenance
Maintenance requirements
■Repair and replacement
It is recommended that genuine Lexus parts be used for repairs to ensure perfor-
mance of each system. If non-Lexus parts are used in replacement or if a repair
sho
p other than a Lexus dealer performs repairs, confirm the warranty coverage.
To ensure safe and economical drivin g, day-to-day care and regular main-
tenance are essential. It is the owne r
’s responsibility to perform regular
checks. Lexus recommends performing the following maintenance:
■ General maintenance
General maintenance should be pe r
formed on a daily basis. This
can be done by yourself or by a Lexus dealer.
■ Scheduled maintenance
Scheduled maintenance should be per
formed at specified intervals
according to the maintenance schedule.
For details about maintenance items and schedules, refer to the “War -
ranty and Service Guide”, “Owner’s Manual
Supplement” or “Scheduled
Maintenance”.
■ Do-it-yourself maintenance
You can perform some maintenance procedures by yourself. 
Please be aware that do-it-your self maintenance may af
fect war-
ranty coverage.
The use of Lexus repair manuals is recommended.
For details about warranty coverage, refer to the separate “Owner’s
Guide”, “W
arranty and Service Guide”, “Owner’s Manual Supplement”
or “Warranty Booklet”.