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441-1. For safe use
SIENNA_OM_OM08007U_(U)
WARNING
■Modification and disposal of SRS airbag system components
Do not dispose of your vehicle or per form any of the following modifications
without consulting your Toyota dealer. 
The  SRS  airbags  may  malfunction  or  deploy  (inflate)  accidentally,  causing
death or serious injury.
● Installation, removal, disassembly and repair of the SRS airbags
● Repairs,  modifications,  removal  or  replacement  of  the  steering  wheel,
instrument panel, dashboard, seats or seat upholstery, front, side and rear
pillars or roof side rails
● Repairs  or  modifications  of  the  front  fender,  front  bumper,  or  side  of  the
occupant compartment
● Installation  of  a  grille  guard  (bull  bars,  kangaroo  bar,  etc.),  snow  plows,
winches or roof luggage carrier
● Modifications to the vehicle’s suspension system
● Installation  of  electronic  devices  such  as  mobile  two-way  radios  and  CD
players
● Modifications to your vehicle for a person with a physical disability 
     
        
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4-5. Using the driving support systems
■The intuitive parking assist 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).
● Front corner sensors:
• The shift lever is not in P.
• The vehicle speed is approximately 6 mph (10 km/h) or less.
● Rear corner and rear center sensors:
The shift lever is in R.
■ Intuitive parking assist display
When  an  obstacle  is  detected  while  the  rear  view  monitor  system  is  in  use,
the warning indicator will appear in the upper corner of the screen even if the
display setting has been set to off.
■ Sensor detection information
●The  sensor’s  detection  areas  are  limited  to  the  areas  around  the  vehicle’s
bumper.
● Certain  vehicle  conditions  and  the  surrounding  environment  may  affect  the
ability of the sensor to correctly detect obstacles. Particular instances where
this may occur are listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)
• The sensor is frozen. (Thawing the area will resolve this problem.) 
In especially cold weather, if a sensor is frozen the screen may show an
abnormal display, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass
• The  vicinity  of  the  vehicle  is  noisy  due  to  vehicle  horns,  motorcycle
engines, air brakes of large vehicles, or other loud noises producing ultra-
sonic waves.
• There  is  another  vehicle  equipped  with  parking  assist  sensors  in  the
vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather
• The area directly under the bumpers is not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Toyota suspension (lowered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In  addition  to  the  examples  above,  there  are  instances  in  which,  because  of
their  shapes,  signs  and  other  objects  may  be  judged  by  the  sensor  to  be
closer than they are. 
     
        
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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 
     
        
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8
When trouble arises
8-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air co nditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge  needle continually points higher
than normal
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss  of  brake  effectiveness,  spon gy  feeling,  pedal  almost  touches
the floor
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms 
     
        
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AVERTISSEMENT
■Modification et mise au rebut des composants du système de coussins
gonflables SRS
Ne mettez pas votre véhicule  au rebut  et n’effectuez aucune  des modifica-
tions suivantes sans d’abord consulter votre concessionnaire Toyota. 
Les  coussins  gonflables  SRS  pourraient  fonctionner  de  manière  incorrecte
ou se déployer (gonfler) accidentellement, ce qui serait susceptible d’occa-
sionner des blessures graves, voire mortelles.
●Installation, retrait, démontage et réparation des coussins gonflables SRS
● Réparations, modifications, retrait ou remplacement du volant, du tableau
de bord, de la planche de bord, des sièges ou du capitonnage des sièges,
des montants avant, latéraux et arrière, ou des brancards de pavillon
● Réparations  ou  modifications  de  l’aile  avant,  du  pare-chocs  avant  ou  du
côté de l’habitacle
● Installation  d’une  protection  de  calandre  (barre  safari,  barre  kangourou,
etc.), de lames de déneigement, de treuils ou d’un porte-bagages de toit
● Modifications du système de suspension du véhicule
● Installation  d’appareils  électroniques  tels  qu’un  émetteur-récepteur  radio
ou un lecteur de CD
● Modifications à votre véhicule pour une personne aux capacités physiques
réduites