Page 247 of 672

247
SIENNA_OM_OM08007U_(U)
4-3. Operating the lights and wipers
4
Driving
Automatic High Beam
Push the lever away from you with
the  headlight  switch  in  the 
position.
The  Automatic  High  Beam  indica-
tor  will  come  on  when  the  head-
lights  are  turned  on  automatically
to  indicate  that  the  system  is
active.
When  all  of  the  following  conditions are  fulfilled,  high  beam  will  be
automatically turned on (after approximately 1 second):
● Vehicle speed is above appr oximately 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  auto-
matically 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.
: If equipped
The Automatic High Beam uses an in-vehicle camera sensor to
assess the brightness of streetli ghts, the lights of oncoming and
preceding vehicles, etc., and au tomatically turns high beam on
or off as necessary.
Activating the Automatic High Beam system
High beam automatic turning on or off conditions 
     
        
        Page 248 of 672
248
SIENNA_OM_OM08007U_(U)
4-3. Operating the lights and wipers
■Switching to low beam
Pull  the  lever  to  the  original
position.
■Switching to high beam
Turn  the  light  switch  to  the position.
Turning the high beam on/off manually 
     
        
        Page 249 of 672

SIENNA_OM_OM08007U_(U)
2494-3. Operating the lights and wipers
4
Driving
■The Automatic High Beam can be operated when
The  engine  switch  is  in  the  “ON”  position  (vehicles  without  a  smart  key  sys-
tem) or IGNITION ON mode (vehicles with a smart key system).
■ 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. 
     
        
        Page 250 of 672

250
SIENNA_OM_OM08007U_(U)
4-3. Operating the lights and wipers
●In  the  situations  below,  the  system  may  not  be  able  to  correctly  detect  the
surrounding brightness levels, and may flash or expose nearby pedestrians
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 camera 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  in termittently  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 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 dis- tress to other drivers or pedestrians nearby.
■ When the warning message is shown  on the multi-information display
P. 562
■ Temporary lowering sensor sensitivity
The sensitivity of the sensor can be temporarily lowered.
To lower the sensitivity, push and hold   on the inside rear view mirror for
15 to 20 seconds, and release. The indicator light on the inside rear view mir-
ror will flash to indicate that the sensitivity has been lowered.
When  the  engine  switch  is  turned  to  the  “LOCK”  position  (vehicles  without  a
smart key system) or turned off (vehicles with a smart key system), the sensi-
tivity will be returned to its normal level.
■ Customization
The Automatic High Beam can be turned off. 
(Customizable features:  P. 631) 
     
        
        Page 251 of 672

SIENNA_OM_OM08007U_(U)
2514-3. Operating the lights and wipers
4
Driving
WARNING
■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.
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  any  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. 244)
Observe  the  following  to  ensure  that  the
Automatic High Beam functions correctly. 
     
        
        Page 252 of 672
252
SIENNA_OM_OM08007U_(U)
4-3. Operating the lights and wipers
Fog light switch
The illustration is intended as an example.
Turns the fog lights on
*1 or *2 
Turns the fog lights off
*1:For U.S.A.
*2: For Canada
■ Fog lights can be used when
The headlights are on in low beam.
: If equipped
The fog lights secure excellent visi bility in difficult driving con-
ditions, such as in rain and fog.
1
2 
     
        
        Page 518 of 672
518
SIENNA_OM_OM08007U_(U)
7-3. Do-it-yourself maintenance
■Front
Vehicles without daytime running lights or with bulb type daytime
running lights
Vehicles with LED type daytime running lights
Bulb locations
Headlight  high  beam  and  day-
time running lights (if equipped)
Headlight low beam 
(halogen bulb) Fog light (if equipped)
Front  turn  signal/parking  and
front side marker lights1
2
3
4
Front turn signal light
Headlight high beam
Fog light
Headlight low beam 
(halogen bulb)
Front side marker light1
2
3
4
5 
     
        
        Page 520 of 672
520
SIENNA_OM_OM08007U_(U)
7-3. Do-it-yourself maintenance
■Headlight low beams (halogen bulb)For left side only: 
Open the fuse box cover. ( P. 514)
Unplug  the  connector  while
pushing the lock release.
Turn  the  bulb  base  counter-
clockwise.
Replacing light bulbs
1
2
3