Page 416 of 672
4166-1. Using the air conditioning system and defogger
SIENNA_OM_OM08007U_(U)■
Switching between outside air and recirculated air modes
Press .
The mode switches between outside air mode ( appears on the
display) and recirculated air mode ( appears on the display) each
time the button is pressed.
■
Defogging the windshield
Defoggers are used to defog the windshield and front side win-
dows.
Press
.
Set to outside air mode if the recirculated air mode is used. (It
may switch automatically.)
To defog the windshield and the side windows early, turn the air flow and
temperature up.
To return to the previous mode, press again when the wind-
shield is defogged.
■
Rear window defogger, outside rear view mirror defoggers (if
equipped) and windshield wi per de-icer (if equipped)
Defoggers are used to defog the rear window, and to remove rain-
drops, dew and frost from the outside rear view mirrors. The wind-
shield wiper de-icer is used to prevent ice from building up on the
windshield and wiper blades.
Press .
The defoggers and windshield wiper de-icer will automatically turn off
after a period of time.
Other functions
Page 469 of 672
SIENNA_OM_OM08007U_(U)
4697-1. Maintenance and care
7
Maintenance and care
■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 clean-
ers.
Use the same mild detergent and wax as used on the paint.
● Do not use detergent on the wheels when they are hot, for example after
driving for long distance in the hot weather.
● Wash detergent from the wheels immediately after use.
■ Bumpers and side moldings
Do not scrub with abrasive cleaners.
WARNING
■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.
■ When cleaning the windshield (veh icles with rain-sensing windshield
wiper)
● When the upper part of the windshi eld where the raindrop sensor is
located is touched by hand
● When a wet rag or similar is held close to the raindrop sensor
● If something bumps against the windshield
● If you directly touch the raindrop sensor body or if something bumps into
the raindrop sensor
■ Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has
cooled sufficiently, as touching a hot exhaust pipe can cause burns.
■ Precaution regarding the Blind Spot Monitor (if equipped)
If the paint of the rear bumper is chipped or scratched, the system may mal-
function. If this occurs, consult your Toyota dealer.
Set the wiper switch to off.
If the wiper switch is in “AUTO”, the wip-
ers may operate unexpectedly in the fol-
lowing situations, and may result in
hands being caught or other serious inju-
ries and cause damage to the wiper
blades.
Off
Page 470 of 672
470
SIENNA_OM_OM08007U_(U)
7-1. Maintenance and care
NOTICE
■To prevent paint deterioration and corrosion on the body and compo-
nents (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 you see dead insects, insect droppings or bird droppings on the paint
• After driving in an area contaminated with soot, oily smoke, mine dust,
iron powder or chemical substances
• If the vehicle becomes heavily soiled in 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 wheels.
■ Cleaning the exterior lights
●Wash carefully. Do not use organic substances or scrub with a hard brush.
This may damage the surface of the lights.
● Do not apply wax on the surfaces of the lights.
Wax may cause damage to the lenses.
■ When using an automatic car wash (vehicles with rain-sensing wind-
shield 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 using a high pressure car wash
Do not bring the nozzle tip close to boots (rubber or resin manufactured
cover), connectors 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
Page 479 of 672
SIENNA_OM_OM08007U_(U)
4797-2. Maintenance
7
Maintenance and care
Vehicle exterior
ItemsCheck points
Doors• Do the doors operate smoothly?
Engine hood• Does the engine hood lock system workproperly?
Fluid leaks
• There should not be any signs of fluidleakage after the vehicle has been
parked.
Tires
• Is the tire inflatio n pressure correct?
• The tires should not be damaged or excessively worn.
• Have the tires been rotated according to the maintenance schedule?
• The wheel nuts should not be loose.
Windshield wipers/
rear window wiper
• The wiper blades should not show any
signs of cracking, splitting, wear, contam-
ination or deformation.
• The wiper blades should clear the wind- shield/rear window without streaking or
skipping.
WARNING
■If the engine is running
Turn the engine off and ensure that there is adequate ventilation before per-
forming maintenance checks.
