2004 TOYOTA SEQUOIA ECU

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CAUTION
Never use oil or grease on the
bolts or nuts. Doing so may lead
to overtightening the nuts and
damaging the bolts. The nuts
may loose and the wheels may
fall off, which could cause a seri-
ous accident. If there is oil or
grease on any bolt or nut, clean
it.
9. Lower the vehicle completelyand tighten the wheel nuts.
Turn the jack handle extension coun-
terclockwise with handle to lower the
vehicle, making sure the handle re-
mains firmly fitted onto the jack han-
dle extension.
Use only the wheel nut wrench and
turn it clockwise to tighten the nuts.
Do not use other tools or any addition-
al leverage other than your hands,
such as a hammer, pipe or your foot.
Make sure the wrench is securely en-
gaged over the nut. Tighten each nut a little at a time in
the order shown. Repeat the process
until all the nuts are tight.
CAUTION

When lowering the vehicle,
make sure all portions of your
body and all other persons
around will not be injured as
the vehicle is lowered to the
ground.
 Have the wheel nuts tightened
with torque wrench to 110 N·m
(11.5 kgf·m, 83 ft·lbf), as soon
as possible after changing
wheels. Otherwise, the nuts
may loosen and the wheels
may fall off, which could cause
a serious accident.
—Lowering your vehicle

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Ty p e A
Ty p e B10.Reinstall the wheel ornament.
Put the wheel ornament into position
and then tap it firmly with the side or
heel of your hand to snap it into place.
CAUTION
Take due care in handling the or-
nament to avoid unexpected per-
sonal injury.
11. Check the air pressure of the re-
placed tire.
Adjust the air pressu re to the specifi-
cation designated on page 402 in
Section 8. If the pressure is lower,
drive slowly to the nearest service
station and fill to the correct pressure.
Do not forget to reinstall the tire infla-
tion valve cap as dirt and moisture
could get into th e valve core and
possibly cause air leakage. If the cap
is missing, have a new one put on as
soon as possible.
12.Restow all the tools, jack and flat tire securely.
With a spare tire of the same wheel
type as the installed tires—
As soon after changing wheels as
possible, tighten the wheel nuts to the
torque specified on page 402 in Sec-
tion 8 with a torque wrench. Have a
technician repair the flat tire.
—Reinstalling wheel ornament —After changing wheels

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(c) Towing with sling type truck
All models—
(c) Towing with sling type truck
NOTICE
Do not tow with sling type truck, ei-
ther from the front or rear. This may
cause body damage.
If towing is necessary, we recommend
you to have it done by your Toyota
dealer or a commercial tow truck ser-
vice.
If towing service is not available in an
emergency, your vehicle may be tempo-
rarily towed by a cable or chain se-
cured to the emergency towing hook
under the front of the vehicle. Use ex-
treme caution when towing the vehicle.
NOTICE
Only use specified towing hook;
otherwise your vehicle may be dam-
aged.
A driver must be in the vehicle to steer
it and operate the brakes.
Towing in this manner may be done only
on hard−surfaced roads for a short dis-
tance and at low speeds. Also, the
wheels, axles, drive train, steering and
brakes must all be in good condition.
CAUTION
Use extreme caution when towing the
vehicle. Avoid sudden starts or errat-
ic driving maneuvers which would
place excessive stress on the emer-
gency towing hook and towing cable
or chain. The hook and towing cable
or chain may break and cause serious
injury or damage.
NOTICE
Use only a cable or chain specifically
intended for use in towing vehicles.
Securely fasten the cable or chain to
the towing hook provided.
—Emergency towing

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Power steering fluid level
Check the level through the reservoir. The
level should be in the “HOT” or “COLD”
range depending on the fluid temperature.
See page 374 in Section 7−2 for addition-
al information.
Exhaust system
If you notice any change in the sound of
the exhaust or smell exhaust fumes, have
the cause located and corrected immedi-
ately. (See “Engine exhaust cautions” on
page 289 in Section 2.)
INSIDE THE VEHICLE
Items listed below should be checked
regularly, e.g. while performing periodic
services, cleaning the vehicle, etc.
Lights
Make sure the headlights, stop lights, tail
lights, turn signal lights, and other lights
are all working. Check headlight aim.
Service reminder indicators and warning
buzzers
Check that all service reminder indicators
and warning buzzers function properly.
Steering wheel
Check that it has the specified free play.
Be alert for changes in steering condition,
such as hard steering or strange noise. Seats
Check that all seat controls such as seat
adjusters, seatback recliner, etc. operate
smoothly and that all latches lock securely
in any position. Check that the head re-
straint move up and down smoothly and
that the locks hold securely in any latched
position. For folding
−down rear seatbacks,
swing −up rear seat cushions and detach-
able temporary third seat, check that the
latches lock securely.
Seat belts
Check that the seat belt system such as
buckles, retractors and anchors operate
properly and smoothly. Make sure the belt
webbing is not cut, frayed, worn or dam-
aged.
Accelerator pedal
Check the pedal for smooth operation and
uneven pedal effort or catching.
Brake pedal
Check the pedal for smooth operation and
that the pedal has the proper clearance.
Check the brake booster function.
Brakes
At a safe place, check that the brakes do
not pull to one side when applied. Parking brake
Check that the pedal has the proper travel
and that, on a safe incline, your vehicle
is held securely with only the parking
brake applied.
Automatic transmission “Park” mecha-
nism
Check the lock release button of the se-
lector lever for proper and smooth opera-
tion. On a safe incline, check that your
vehicle is held securely with the selector
lever in “P” position and all brakes re-
leased.
OUTSIDE THE VEHICLE
Items listed below should be performed
from time to time, unless otherwise
specified.
Fluid leaks
Check underneath for leaking fuel, oil, wa-
ter or other fluid after the vehicle has
been parked for a while. If you smell fuel
fumes or notice any leak, have the cause
found and corrected immediately.
Doors and engine hood
Check that all doors including back door
operate smoothly and all latches lock se-
curely. Make sure the engine hood sec-
ondary latch secures the hood from open-
ing when the primary latch is released.

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1. Open the hood. Unplug the connec-tor. Remove the rubber cover.
If the connector is tight, wiggle it.2. Release the bulb retaining spring and remove the bulb. Install a new
bulb and the bulb retaining spring.
To install a bulb, align the tabs of the
bulb with the cutouts of the mounting
hole.
“TOP PULL” mark
3. Install the rubber cover with the “TOP PULL” mark upward, and fit it
securely on the boss. Then, plug in
the connector.
Make sure the rubber cover fits securely
on the bulb base and the mounting body.
Aiming is not necessary after replacing
the bulb. When aiming adjustment is nec-
essary, contact your Toyota dealer.
—Headlights

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Engine compartment
5. HLP LL 10 A (with daytime runninglight system): Left−hand headlight (low
beam)
6. RSE 7.5 A: Rear seat audio system,
rear seat entertainment system
7. TOWING TAIL 30 A: Trailer lights (tail
lights)
8. BATT CHARGE 30 A: Trailer sub bat-
tery
9. TOWING BRK 30 A: Trailer brake con-
troller
10. CDS FAN 25 A: Electric cooling fan
11. SPARE 15 A: Spare fuse
Engine compartment
12. SPARE 20 A: Spare fuse
13. SPARE 30 A: Spare fuse
14. ETCS 10 A: Multiport fuel injection
system/se quential multiport fuel injec-
tion system, electronic throttle control
system
15. EFI NO.1 20 A: Multiport fuel injection
system/se quential multiport fuel injec-
tion system, electric throttle control
system
16. HLP RH 15 A (without daytime run- ning light system): Right−hand head-
light
Instrument panel
17. TOWING 30 A: Trailer lights (stop
lights, turn signal lights)
18. ALTS 7.5 A: Charging system
19. DRL 15 A (with daytime running light system): Multiplex communication sys-
tem (power door lock system, security
system, auto −door locking system, au-
tomatic light control system, headlight
delay off system, tail light auto cut
system, illuminated entry system, day-
time running light system)
HLP LH 15 A (without daytime run-
ning light system): Left−hand head-
light

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20. AM2 25 A: Starting system, multiport
fuel injection system/sequential multi-
port fuel injection system, electronic
throttle control system, “IGN 1” and
“IGN 2” fuses
21. TURNHAZ 20 A: Turn signal lights,
emergency flashers
22. RAD NO.3 20 A: Car audio/video sys-
tem
23. ST 30 A: Starting system, “STA” fuse
24. HORN 10 A: Horns
25. EFI NO.2 10 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system, electronic throttle control
system
26. DOME 10 A: Center interior and per-
sonal lights, personal lights, luggage
compartment light, air conditioning sys-
tem, wireless remote control system,
garage door opener, ignition switch
light, door courtesy lights, foot light,
vanity lights, power antenna 27. ECUB 7.5 A:
Multiplex communication
system (power door lock system, secu-
rity system, auto −door locking system,
automatic light control system, head-
light delay off system, tail light auto
cut system, illuminated entry system,
daytime running light system), back
door lock system, driver and front pas-
senger door lock system, gauges and
meters
28. MIR HTR 15 A: Outside rear view mir-
ror heaters
29. RAD NO.1 25 A: Car audio system
30. TAIL 15 A: Tail lights, back door cour-
tesy light, license plate lights
31. ECUIG 10 A: Charging system, cruise
control system, anti −lock brake system,
vehicle stability control system, traction
control system (two −wheel drive mod-
els), active traction control system
(four− wheel drive models), electronical-
ly controlled automatic transmission
system, power antenna, electric moon
roof, back door lock system, driver and
front passenger door lock system,
gauges and meters, multi −information
display, SRS airbag system, front seat
belt pretensioners
32. WSH 25 A: Wipers and washer
33. AC INV 15 A: Power outlets 34. IGN 2 20 A:
Starting system
35. PWR NO.3 20 A: Rear passenger’s
power window (right side)
36. PWR NO.4 20 A: Rear passenger’s
power window (left side)
37. CIG 15 A: Air conditioning systems,
power rear view mirror control, ciga-
rette lighter
38. RAD NO.2 7.5 A: Car audio/video sys-
tem, power antenna, power outlets,
multiplex communication system (power
door lock system, security system,
auto− door locking system, automatic
light control system, headlight delay off
system, tail light auto cut system, illu-
minated entry system, daytime running
light system)
39. 4WD 20 A: A.D.D. control system,
four −wheel drive system
40. STOP 15 A: Stop lights, high− mounted
stop lights, multiport fuel injection sys-
tem/sequential multiport fuel injection
system, vehicle stability control system,
traction control system (two −wheel
dr
ive models), active traction control
system (four −wheel drive models), mul-
tiplex communication system (auto− door
locking system)

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41. OBD 7.5 A: On−board diagnosis sys-
tem
42. PANEL 7.5 A: Instrument panel lights,
glove box light, lights of seat heaters,
cigarette lighter, ashtrays, multi −infor-
mation display, car audio/video system,
gauge and meters, air conditioning sys-
tems
43. PWR NO.1 25 A: Driver ’s door lock
system
44. WIP 25 A: Wiper and washers
45. IGN 1 10 A: Charging system
46. SUN ROOF 25 A: Electric moon roof
47. PWR NO.2 25 A: Front passengers’
door lock system
48. HTR 10 A: Air conditioning systems,
electric cooling fan, back window de-
fogger, outside rear view mirror heater
49. FOG 15 A: Front fog lights
50. GAUGE 15 A: Back−up lights, seat
heaters, gauge and meters, air condi-
tioning systems
51. PWR OUTLET 15 A: Power outlets
52. SEAT HTR 15 A: Seat heaters Fuses (type B)
53. RR HEATER 30 A: Rear air condition-
ing system
54. HEATER 40 A: Front air conditioning
system
55. DEFOG 40 A: Back window defogger
56. MAIN 40 A: Starting system, “H −LP
RH”, “H− LP LH” and “STA” fuses
57. DOOR NO.2 30 A: Multiplex commu-
nication system (power door lock sys-
tem, security system, auto −door locking
system)
58. PWR SEAT 30 A: Power front seats
59. AM1 40 A: “HTR”, “CIG”, “GAUGE”,
“RAD NO.2”, “ECU −IG”, “WIPER”,
“WSH” and “4WD” fuses
60. PWR NO.5 30 A: Power door lock sys-
tem, back door lock system Fuses (type C)
61. ALT 140 A: “AM1”, “PWR SEAT”,
“TAIL”, “STOP”, “SUN ROOF”, “PANEL”,
“OBD”, “FOG”, “PWR NO.1”, “PWR
NO.2”, “PWR NO.5”, “PWR NO.3”,
“PWR NO.4”, “PWR OUTLET” and
“SEAT HTR” fuses
62. ABS 60 A: Anti−lock brake system,
vehicle stability control system, traction
control system (two −wheel drive mod-
els), active traction control system
(four −wheel drive models)