2012 TOYOTA SIENNA headlights

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2-3. Operating the lights and wipers
2
When driving
SIENNA_U (OM45477U)
■
High beam automatic turning on or off conditions
When all of the following conditio ns are fulfilled, high beam will be
automatically turned on (aft er approximately 1 second):
● Vehicle speed is above approximately 20 mph (32 km/h).
● The area ahead of the vehicle is dark.
● There are no oncoming or preceding vehicles with headlights or
tail lights turned on.
If any of the following conditions are fulfilled, high beam will be
automatically turned off:
● Vehicle speed drops below approximately 20 mph (32 km/h).
● The area ahead of the vehicle is not dark.
● Oncoming or preceding vehicles have headlights or tail lights
turned on.

276 2-3. Operating the lights and wipers
SIENNA_U (OM45477U)
■Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Always drive safely, taking care to
observe your surroundings and turning high beam on or off manually if nec-
essary.
■ Camera sensor detection information
● High beam may not be automatically turned off in the following situations:
• When oncoming vehicles suddenly appear from a curve.
• When the vehicle is cut in front of by another.
● High beam may be turned off if an oncoming vehicle that is using fog
lights without using the headlights is detected.
● Houselights, streetlights, red traffic signals, and illuminated billboards or
signs may cause the high beam to turn off.
● The following factors may affect the amount of time taken to turn high
beam on or off:
• The brightness of headlights, fog lights, and tail lights of oncoming and
preceding vehicles
• Road conditions (wetness, ice, snow etc.)
• The number of passengers and amount of baggage
● High beam may be turned on or off when unexpected by the driver.

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2-3. Operating the lights and wipers
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When driving
SIENNA_U (OM45477U)
●
In the situations below, the system may not be able to correctly detect the
surrounding brightness levels, and may flash or expose nearby pedestri-
ans to the high beam. Therefore, you should consider turning the high
beam on or off manually rather than relying on the Automatic High Beam
system.
• In bad weather (rain, snow, fog, sandstorms etc.)
• The windshield is obscured by fog, mist, ice, dirt etc.
• The windshield is cracked or damaged.
• The inside rear view mirror or ca mera sensor is deformed or dirty.
• Surrounding brightness levels are equal to those of headlights, tail lights or fog lights.
• Vehicles ahead have headlights that are either switched off, dirty, are changing color, or are not aimed properly.
• When driving through an area of intermittently changing brightness and darkness
• When frequently and repeatedly driving ascending/descending roads, or roads with rough, bumpy or uneven surfaces (such as stone-paved
roads, gravel tracks etc.)
• When frequently and repeatedly taking curves or driving on a winding road
• There is a highly reflective object ahead of the vehicle, such as a sign or a mirror.
• The vehicle’s headlights are damaged or dirty.
• The vehicle is lifting or tilting, due to a flat tire, a trailer being towed etc.
• The Automatic High Beam indicator is flashing.
• The high beam and low beam are repeatedly being switched between in an abnormal manner.
• The driver believes that the high beam may be causing problems or distress to other drivers or pedestrians nearby.

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2-3. Operating the lights and wipers
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When driving
SIENNA_U (OM45477U)
NOTICE
■
Camera sensor
● Do not touch the camera sensor.
● Do not subject the inside rear view mirror or the camera sensor to a strong
impact.
● Do not disassemble the camera sensor.
● Do not spill liquid onto the inside rear view mirror or the camera sensor.
● Do not apply window tinting or stickers to the camera sensor or the area of
windshield near the camera sensor.
● Do not place items on the dashboard. There is a possibility that the cam-
era sensor will mistake items reflected in the windshield for streetlights,
the headlights of other vehicles, etc.
● Do not install a parking tag or an y other accessories near or around the
inside rear view mirror and the camera sensor.
● Do not overload the vehicle.
● Do not modify the vehicle.
● Do not replace windshield with a non-genuine windshield.
Contact your Toyota dealer.
■ Headlight leveling
When the vehicle is loaded, headlight level should be adjusted to appropri-
ate dial setting. ( P. 269)
Observe the following to ensure that the
Automatic High Beam functions correctly.

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2-3. Operating the lights and wipers
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When driving
SIENNA_U (OM45477U)
■
Fog lights can be used when
The headlights are on in low beam.
Ty p e B
Turns the front fog
lights off
Turns the front fog
lights on

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2-4. Using other
driving systems
2
When driving
SIENNA_U (OM45477U)
■Rear view monitor system camera
■ Smear effect
In the following cases, it may be difficult
to see the images on the screen, even
when the system is functioning correctly.
• The vehicle is in a dark area, such as
at night.
• The temperature near the lens is extremely high or low.
• Water droplets are on the camera lens or humidity is high, such as when it
rains.
• Foreign matter, such as snow and mud, adheres to the camera lens.
• The sun or headlights are shining directly into the camera lens.
• When the camera is used under fluo- rescent lights, sodium lights, mercury
lights etc., the lights and the illumi-
nated areas may appear to flicker.
• If the lens is scratched.
If a bright light, such as sunlight reflected
off the vehicle body, is picked up by the
camera, a smear effect
* characteristic to
the camera may occur.
*: Smear effect – A phenomenon that occurs when a bright light is picked up
by the camera; when transmitted by
the camera, the light source appears to
have a vertical streak above and below
it.

644 4-2. Maintenance
SIENNA_U (OM45477U)
ItemsCheck points
Indicators/buzzers • Do the indicators and buzzers
function properly?
Lights • Do all the lights come on?
• Are the headlights aimed cor-
rectly?
Parking brake • Does the parking brake lever or
pedal move smoothly?
• When parked on a slope with the parking brake on, is the vehicle
securely stopped?
Seat belts • Do the seat belts operate
smoothly?
• The seat belts should not be dam- aged.
Seats • Do the seat controls operate
properly?
Steering wheel • Does the steering wheel rotate
smoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be any strange sounds coming from the steering
wheel.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
*1: Vehicles with discharge headlights only
*2: Vehicles with a 1AR-FE engine only
*3: Vehicles with a 2GR-FE engine only
*4: Vehicles without discharge headlights only
*5: Vehicles without a smart key system only
*6: Vehicles with a smart key system only
FuseAmpereCircuit
43 INJ 25 A Multiport fuel injection system/
sequential multiport fuel injection
system, “IG NO.2” and “IG2” fuses
44 ECU-B NO.2 7.5 A Air conditioning system
45 AM2 NO.2
*67.5 A Multiplex communication system,
starting system
46 EFI NO.1 25 A Multiport fuel injection system/
sequential multiport fuel injection
system, “ECT” and “EFI NO.2”
fuses
47 SMART
*65 A Smart key system
48 DRL 30 A Daytime running light system, “H-
LP LH (HI)” and “H-LP RH (HI)”
fuses
49 EPS 60 A Electric power steering