2009 TOYOTA SIENNA Owners Manual

481
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Under the driver’s side instrument panel
FuseAmpereCircuit
1 MIR HTR 10 A Outside rear view mirror defoggers
2RAD2 7.5 A Audio system, navigation system,
rear seat entertainment system
3 PWR OUTLET 15 A Power outlets
4 CIG 15 A Cigarette lighter
5 ECU ACC 7.5 A Shift lock control system, air condi-
tioning system, power rear view
mirror control
6 GAUGE2 7.5 A Meter and gauge
7 IGN 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, multi-
plex communication system
8 IG2 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system
9 RR WIP 15 A Rear window wiper
10 WIP 30 A Windshield wiper and rear window
wiper
11 GAUGE1 10 A Back-up lights, turn signal lights,
emergency flashers
12 S-HTR 15 A Seat heaters

482 4-3. Do-it-yourself maintenance
13 WSH20 AWindshield washer and rear win-
dow washer
14 HTR 10 A Air conditioning system
15 ECU-IG 10 AIntuitive parking assist system, rear
view monitor system, multiplex
communication system, multiport
fuel injection system/sequential
multiport fuel injection system, anti-
lock brake system, traction control
system, vehicle stability control
system, shift lock control system,
dynamic laser cruise control sys-
tem, seat heaters, power back
door, moon roof, multi-information
display, auto anti-glare inside rear
view mirror, power windows, power
outlets (115 V), power third seat,
driving position memory system
16 PANEL 10 AAir conditioning system, seat heat-
ers, audio system, navigation sys-
tem, power sliding door, power
back door, trip information display,
rear window defogger, emergency
flashers, instrument panel lights,
steering switch lights
17 TAIL 10 AStop/tail lights, license plate lights,
parking lights, side maker lights
18 S/ROOF 25 A Moon roof
19 AC INV 15 A Power outlets (115 V)
20 FR DEF 15 A Windshield wiper de-icer
21 AM1 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, starter system
FuseAmpereCircuit

483
4-3. Do-it-yourself maintenance
4
Maintenance and care
22 STOP
10 AStop/tail lights, high mounted stop-
light, shift lock control system, anti-
lock brake system, traction control
system, vehicle stability control
system, multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system, multiplex
communication system
23 P/W 25 APower windows, power rear view
mirror
24 OBD 7.5 A On-board diagnosis system
25 FOG 15 A Front fog lights
26 P/VENT 15 A Power quarter windows
27 P/SEAT 30 A Power front seats
28 PWR 30 A Power windows
FuseAmpereCircuit

484 4-3. Do-it-yourself maintenance
■Under the passenger’s side instrument panel
FuseAmpereCircuit
1ST 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system
2 A/C 7.5 A Manual air conditioning system
3 SFT 5 A Shift lock control system
■ After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. ( P. 486)
● If the replaced fuse blows again, have the vehicle inspected by your
Toyota dealer.
■ If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.

485
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
■
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any
other object in place of a fuse.
● Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
● Do not modify fuses or the fuse box.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your
Toyota dealer as soon as possible.

486
4-3. Do-it-yourself maintenance
Light bulbs
You may replace the following bulbs yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb
replacement seems difficult to perfor m, contact your Toyota dealer.
For more information about replacing other light bulbs, contact your
Toyota dealer.
■ Preparing a replacement light bulb
Check the wattage of the light bulb being replaced. ( P. 549)
■ Turning the power back door main switch off
P. 4 8
■ Front bulb locations
Headlight low beams
(halogen bulbs)
Front side
marker lights
Parking and front turn
signal lightsHeadlight high beams

487
4-3. Do-it-yourself maintenance
4
Maintenance and care
Replacing light bulbs
■ Headlight (halogen bulbs)
Turn the bulb base counterclock-
wise.
Headlight (high beam)
Headlight (low beam)
Pull out the light bulb while
depressing the lock release.
■ Rear bulb locations
Back-up lights
Rear turn signal lights
Stop/tail and rear
side
marker
lights
License plate lights
Ta i l lights
STEP1
STEP2

488 4-3. Do-it-yourself maintenance
■Front side marker light
Turn the bulb base counterclock-
wise.
Remove the light bulb.
STEP1
STEP2