
TABLE OF CONTENTS6
SIENNA_OM_OM08013U_(U)6-4. Using the other interior 
features
Other interior features ....... 439 • Sun visors ..................... 439
• Vanity mirrors................ 439
• Clock ............................. 440
• Conversation mirror ...... 440
• Power outlets ................ 441
• Armrests ....................... 444
• Assist grips ................... 445
• Rear side sunshades .... 446
• Grocery bag hooks ....... 447
Garage door opener .......... 448
Compass ........................... 453
Safety Connect.................. 457
7-1. Maintenance and care Cleaning and protecting the vehicle exterior .......... 464
Cleaning and protecting  the vehicle interior ........... 467
7-2. Maintenance Maintenance requirements ................... 470
General maintenance ........ 473
Emission inspection and  maintenance (I/M) 
programs ......................... 476 7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ...................... 477
Hood .................................. 479
Positioning a floor jack....... 481
Engine compartment ......... 482
Tires................................... 492
Tire inflation pressure ........ 500
Wheels............................... 503
Air conditioning filter .......... 505
Wireless remote control/ electronic key battery ...... 507
Checking and replacing  fuses ................................ 510
Light bulbs ......................... 513
8-1. Essential information Emergency flashers ........... 532
If your vehicle has to be stopped in an 
emergency....................... 533
8-2. Steps to take in an  emergency
If your vehicle needs to  be towed .......................... 535
If you think something is  wrong............................... 539
Fuel pump shut off  system ............................. 540
If a warning light turns on  or a warning buzzer 
sounds ............................. 541
If a warning message is  displayed ......................... 550
If you have a flat tire  (vehicles with 
run-flat tires) .................... 566
7Maintenance and care
8When trouble arises 

15Pictorial index
SIENNA_OM_OM08013U_(U)Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 250
Precautions against winter season  . . . . . . . . . . . . . . . . . . . . .  P. 313
To prevent freezing (windshield wiper de-icer)
*. . . . . . . . . . . .  P. 412
Precautions against car wash  . . . . . . . . . . . . . . . . . . . . . . . . .  P. 466
Fuel filler door  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 256
Refueling method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 256
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 600
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 492
Tire size/inflation pressure  . . . . . . . . . . . . . . . . . . . . . . . . . P. 604
Winter tires/tire chain  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 313
Checking/rotation/tire pressure warning system . . . . . . . . . P. 492
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . P. 566, 568
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 479
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 479
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 600
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 591
Warning messages  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 552
Headlights/parking lights/ daytime running lights
*. . . . . . .  P. 239
Side marker lights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 239
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 249
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 237
Stop/tail lights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 239
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 239
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 233
5
6
7
8
Light bulbs of the exterior lights for driving
(Replacing method: P. 513, Watts: P. 606)
*: If equipped
9
10
11
12
13
14
15 

SIENNA_OM_OM08013U_(U)
4757-2. 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. 

531
SIENNA_OM_OM08013U_(U)
8When trouble arises
8-1. Essential informationEmergency flashers .......... 532
If your vehicle has to be stopped in an 
emergency ...................... 533 8-2. Steps to take in an 
emergency
If your vehicle needs to  be towed ......................... 535
If you think something is  wrong .............................. 539
Fuel pump shut off  system ............................ 540
If a warning light turns on  or a warning buzzer 
sounds ............................ 541
If a warning message is  displayed ......................... 550
If you have a flat tire  (vehicles with 
run-flat tires) .................... 566
If you have a flat tire  (vehicles with a compact 
spare tire) ........................ 568
If the engine will not  start ................................. 582
If the shift lever cannot  be shifted from P ............. 584
If the electronic key does  not operate properly 
(vehicles with a smart 
key system) ..................... 585
If the battery is  discharged ...................... 587
If your vehicle overheats ... 591
If the vehicle becomes  stuck ............................... 594 

535
SIENNA_OM_OM08013U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If your vehicle needs to be towed
The  following  may  indicate  a  problem  with  your  transaxle.  Contact
your Toyota dealer or commercial towing service before towing.
●The engine is running but  the vehicle does not move.
● The vehicle makes an abnormal sound.
Do  not  tow  with  a  sling-type  truck
to prevent body damage.
If towing is necessary, we re commend having your vehicle
towed by your Toyota dealer or commercial towing service,
using a wheel-lift type tr uck or flat bed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws. 
2WD models: If towing your vehicle  with a wheel-lift type truck
from the front, the vehicle’s rear wheels and axles must be in
good conditions. ( P. 536, 537) 
If they are damaged, use a to wing dolly or flat bed truck.
AWD models: If towing your vehicl e with a wheel-lift type truck,
use a towing dolly. ( P. 536, 537)
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck 

539
SIENNA_OM_OM08013U_(U)
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 

5478-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
8
When trouble arises
WARNING
■If both the ABS and the brake  system warning lights remain on
Stop  your  vehicle  in  a  safe  place  immediately  and  contact  your  Toyota
dealer. The vehicle will become extrem ely unstable during braking, and the
ABS  system  may  fail,  which  could  cause  an  accident  resulting  in  death  or
serious injury.
■ When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If  the  steering  wheel  becomes  heavie r  than  usual  when  operating,  hold
firmly and operate using more force than usual.
■
If the tire pressure warning light comes on
Be  sure  to  observe  the  following  precautions.  Failure  to  do  so  could
cause a loss of vehicle control and result in death or serious injury.
Vehicles with standard tires:
●Stop  your  vehicle  in  a  safe  place  as  soon  as  possible.  Adjust  the  tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that  you have a flat tire. Check the tires.
If  a  tire  is  flat,  change  it  with  th e  spare  tire  and  have  the  flat  tire
repaired by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking.  If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
Vehicles with run-flat tires:
●Decelerate  to  the  lowest  appropriate  speed  as  soon  as  possible.  Do
not drive over 50 mph (80 km/h).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure  adjustment,  it  is  probable  that   you  have  a  flat  tire.  Have  the  tire
replaced by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking.  If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system  may not activate immediately. 

566
SIENNA_OM_OM08013U_(U)
8-2. Steps to take in an emergency
If you have a flat tire (vehicles with run-flat 
tires)
Take  your  vehicle  to  the  nearest
Toyota  dealer  or  authorized  tire
dealer  as  soon  as  possible  if  any
tire goes flat.
The  vehicle  can  be  driven  for  a
maximum  of  100 miles  (160 km)
at  a  speed  below  50 mph
(80 km/h)  after  the  tire  pressure
warning light comes on. 
( P. 543)
■In some condition (such as at high temperatures)
You cannot continue driving for up to 100 miles (160 km).
■For the detailed information on run-flat tires
See the tire warranty booklet.
Your vehicle is not equipped wi th a spare tire, but instead you
can continue driving the vehicle  with run-flat tires even if any
tire goes flat. 
In this case, slow down and drive with extra caution.
Run-flat tires (A “RFT” or “DSS T” mark is molded on the side-
wall)