2012 TOYOTA SIENNA sensor

702 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)
FuseAmpereCircuit
35 ALT 140 A Charging system, horn, left-hand
headlight (low beam), right-hand
headlight (low beam), fog light, out-
side rear view mirror heaters, rear
window defoggers, windshield
wiper de-icer
36 RAD NO.1 15 A Audio system
37 DOME 7.5 A Vanity lights, personal/interior
lights, personal lights, engine
switch light, rear ceiling lights, door
courtesy lights, luggage compart-
ment light, gauges and meters,
clock
38 ECU-B 10 A Main body ECU, smart key system,
wireless remote control, power
back door, power sliding door, rear
view monitor, multi information dis-
play, power window, outside rear
view mirror control, steering angle
sensor, auto-anti glare inside rear
view mirror, AUTO ACCESS SEAT
remote control, front passenger
occupant classification system
39 ETCS 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
40 A/F 20 A Multiport fuel injection system/
sequential multiport fuel injection
system
41 STRG LOCK
*620 A Steering lock system
42 ALT-S 7.5 A Charging system

705
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
FuseAmpereCircuit
6 ECU-IG NO.1 10 A Multiplex communication system,
stop lights, navigation system,
vehicle stability control system,
Active Torque Control 4WD, intui-
tive parking assist, auto anti-glare
inside rear view mirror, pre-collision
seat belt, outside rear view mirror,
seat heater, TPMS, yaw rate & G
sensor, steering angle sensor,
AUTO ACCESS SEAT, main body
ECU
7 P/W RL 20 A Rear power windows (left-side)
8 D/L 15 A Power door lock system
9 P/SEAT FR 30 A Power front seat (right-side)
10 S/ROOF 30 A Moon roof 11 P/W RR 20 A Rear power windows (right-side)
12 P/W FR 20 A Front power windows (right-side)
13 P/SEAT FL 30 A Power front seat (left-side), driving
position memory system
14 STOP 10 A Stop lights, ABS, vehicle stability
control system, rear combination
light, high mounted stop light, auto-
matic transaxle, shift lock system,
multiplex communication system,
power third seat switch, multiport
fuel injection system/sequential
multiport fuel injection system,
trailer lights (stop lights)
15 P/W FL 20 A Front power windows (left-side)

5
When trouble arises
737
5-2. Steps to take in an emergency
SIENNA_U (OM45477U)
■
SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag
sensors, side and curtain shield airbag sensors, curtain shield airbag sen-
sors, driver’s seat position sensor, driver’s seat belt buckle switch, front pas-
senger occupant classification system (ECU and sensors), “AIR BAG ON”
indicator light, “AIR BAG OFF” indicator light, front passenger’s seat belt
buckle switch, seat belt pretensioner assemblies, inflators, interconnecting
wiring and power sources. ( P. 168)
■ Front passenger detection sensor and passenger seat belt reminder
● If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash even if a passen-
ger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passen-
ger, and the warning light may not operate properly.
■ Electric power steering system warning light
When the voltage is low drops, the electric power steering system warning
light may come on.

818 6-2. Customization
SIENNA_U (OM45477U)
ItemFunctionDefault settingCustomizedsetting
Power
sliding door
(if equipped)
(
P. 67) Operation signal
(buzzer)
Off On
Opening and closing
operation One short push Push and hold
Automatic
light control
system
( P. 266) Time elapsed before
headlights automati-
cally turn off after doors
are closed
*
30 seconds
0 second
60 seconds
90 seconds
Daytime running light
system (U.S.A. only) On Off
Light sensor sensitivity Level 3 Level 1 to 5
Automatic High Beam
(if equipped)
*On Off
Alarm
system
( P. 162) Time elapsed before
the alarm is set
14 seconds 30 seconds
Multi-
information
display
( P. 252) Language selection
*English
French
Spanish

850 Alphabetical index
SIENNA_U (OM45477U)
MaintenanceDo-it-yourself maintenance ....................... 647
General maintenance ............642
Maintenance data.................. 784
Maintenance requirements....639
Reset the maintenance data .....................................640
Meter
Instrument panel light control .................................245
Meters ...................................244
Mirrors Conversation mirror............... 593
Inside rear view mirror...........138
Side mirror heaters................405
Side mirrors ...........................140
Vanity mirrors ........................591
Moon roof .................................150
MP3 disc ...................................431
Multi-information display ........ 252
Noise from under vehicle .......... 24
Odometer .................................. 244
Oil Engine oil ..............................657
Opener Back door ................................82
Fuel filler door ....................... 155
Hood......................................651
Outer foot lights
Outer foot lights ..................... 566
Replacing light bulbs ............. 709
Wattage .................................796
Outside rear view mirrors Adjusting and folding ............. 140
Driving position memory........ 120
Overhead console .................... 578
Overheating, Engine ................775 Parking assist sensors............ 314
Parking brake ........................... 242
Parking lights
Replacing light bulbs ............. 709
Switch ................................... 266
Wattage................................. 796
PCS ........................................... 336
Personal lights Switch ................................... 567
Wattage................................. 796
Power back door ........................ 82
Power outlets ........................... 594
Power windows ................ 144, 148
Pre-collision system ................ 336
Quarter windows...................... 148
Radar cruise control ................ 298
Radiator .................................... 664
Radio ......................................... 412
Rear automatic air conditioning system ............. 401
Rear ceiling light
Switch ................................... 570
Wattage................................. 796
Rear manual air conditioning
system .................................... 398
Rear seat Adjustment ............................ 100
Folding third seats......... 109, 110
Installing second seats.......... 107
Removing second seats........ 104
Stowing third seats........ 111, 113
Rear seat entertainment system .................................... 488M
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