2005 TOYOTA SEQUOIA ECU

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CAUTION
If the total trailer weight exceeds
453 kg (1000 lb.), trailer brakes are
required.
Never tap into your vehicle’s hy-
draulic system as it would lower its
braking effectiveness.
Never tow a trailer without using a
safety chain securely attached to
both the trailer and the vehicle. If
damage occurs to the coupling unit
or hitch ball, there is danger of the
trailer wandering over into another
lane.
SERVICE CONNECTOR FOR TOWING
BRAKE CONTROLLER (with towing
package)
Your vehicle is equipped with a service
connector for the towing brake controller
as shown. Link the connector to the tow-
ing brake controller via the sub wire har-
ness stored in the glove box. The detailed
explanation of the sub wire harness circuit
is packed together with the sub wire har-
ness.
Be sure to position the towing brake con-
troller where it does not prevent the driver
from operating the pedal.
Toyota recommends that the sub wire har-
ness be stored in the glove box when it
is not in use.TIRES
Ensure that your vehicle’s tires are
properly inflated. See page 431 in Sec-
tion 7
−2 and page 460 in Section 8 for
instructions.
The trailer tires should be inflated to
the pressure recommended by the trail-
er manufacturer in respect to the total
trailer weight.

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MAINTENANCE
If you tow a trailer, your vehicle will
require more frequent maintenance due
to the additional load. For this informa-
tion, please refer to the scheduled
maintenance information in the “Sched-
uled Maintenance Guide” or “Owner ’s
Manual Supplement”.
Retighten all fixing bolts of the towing
ball and bracket after approximately
1000 km (600 miles) of trailer driving.
CONNECTING A TRAILER (models with
rear height control air suspension)
Stop your vehicle and a trailer in line and
perform the following: 1. Set the vehicle height to “N” (normal) in automatic control mode. Turn the
ignition switch off or select manual
control mode by pushing the height
control mode select switch to turn off
the automatic leveling function.
2. Connect a trailer.
3. Turn the ignition switch on or select automatic control mode by pushing the
height control mode select switch to
turn on the automatic leveling function. DISCONNECTING A TRAILER (models
with rear height control air suspension)
Stop your vehicle and a trailer in line and
perform the following:
1. Set the vehicle height to “LO” in auto- matic control mode. (Make sure the
“LO” indicator comes on.)
2. Turn the ignition switch off or select manual control mode by pushing the
height control mode select switch to
turn off the automatic leveling function.
3. Set the supporting leg of a trailer on the ground and raise the hitch by 100
mm (4 in.).
4. Turn the ignition switch on or select automatic control mode by pushing the
height control mode select switch to
turn on the automatic leveling function.
5. Wait for about 20 seconds until the rear vehicle height is lowered by the
automatic leveling function.
6. Make sure the hitch is disconnected. If not, raise the hitch higher and repeat
steps 2 through 5.
7. Move the vehicle forward in “LO” mode where the hitch does not touch any-
thing in “N” mode.
8. Set the vehicle height to “N” in auto- matic control mode. PRETOWING SAFETY CHECK
Check that your vehicle remains level
when a loaded or unloaded trailer is
hitched. Do not drive if the vehicle has
an abnormal nose
−up or nose −down
condition, and check for improper
tongue load, overload, worn suspension
or other possible causes.
Make sure the trailer cargo is securely
loaded so that it cannot shift.
Check that your rear view mirrors con-
form to any applicable federal, state/
provincial or local regulations. If not,
install the rear view mirrors required
for towing purpose.

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Turn the jack joint by hand.
To rem ov e: Tur n the joint in direction
1 until the jack is free.
To store: Turn the joint in direction 2
until the jack is fi rmly secured to pre-
vent it flying forward during a collision
or sudden braking.To remove the spare tire:
1. Put a jack handle and jack handle extension together as shown in
the illustration.
1 Jack handle extension
2 Jack handle
NOTICE
Tighten all joints securely.
Otherwise, the extension may
come off and it may damage
the paint or vehicle body.
2. Insert the end of the jack handle
extension into the lowering screw
and turn it counterclockwise with
the handle, making sure the han-
dle remains firmly fitted onto the
jack handle extension.
3. After the tire is lowered completely to the ground, remove the holding
bracket.

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When storing the spare tire, put it in
place with the outer side of the wheel
facing up. Then secure the tire, taking
care that the tire goes straight up
without catching on any other part, to
prevent it from flying forward during
a collision or sudden braking.
2. Block the wheel diagonally op-posite the flat tire to keep the
vehicle from rolling when it is
jacked up.
When blocking the wheel, place a
wheel block in front of one of the front
wheels or behind one of the rear
wheels.Ty p e A
Ty p e B
—Blocking the wheel —Removing wheel ornament

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Front Rear
5. Position the jack at the correct jack point as shown.
Make sure the jack is positioned on
a level and solid place.
JACK POINTS: Front—Under the frame side rail
Rear—Under the rear axle hous-
ing
Put a jack handle, jack handle exten-
sion and jack handle end together as
shown in the illustration.
1 Jack handle end
2 Jack handle extension
3 Jack handle
NOTICE
Tighten all joints securely.
Otherwise, the extension may
come off and it may damage
the paint or vehicle body.
6. After making sure that no oneis in the vehicle, raise it high
enough so that the spare tire
can be installed.
Remember you will need more ground
clearance when putting on the spare
tire than when removing the flat tire.
—Positioning the jack —Raising your vehicle

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8. Reinstall all the wheel nuts fin-ger tight.
Reinstall the wheel nuts (tapered end
inward) and tighten them as much as
you can by hand. Press back on the
tire back and see if you can tighten
them more.
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 completely and 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.
—Reinstalling wheel nuts —Lowering your vehicle

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11. Check the air pressure of the re-placed tire.
Adjust the air pressu re to the specifi-
cation designated on page 460 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 460 in Sec-
tion 8 with a torque wrench. Have a
technician repair the flat tire. With a spare tire of different wheel
type from the installed tires—
As soon after changing wheels as
possible, tighten the wheel nuts to the
torque specified on page 460 in Sec-
tion 8 with a torque wrench. Have a
technician repair the flat tire and re-
place the spare tire with it.
Initial adjustment of the tire pres-
sure warning system is necessary
after you have replaced your tires
or wheels. See “Tire pressure
warning system” on page 198 in
Section 17.
CAUTION
Before driving, make sure all the
tools, jack and flat tire are se-
curely in place in their storage
location to reduce the possibility
of personal injury during a colli-
sion or sudden braking.
If your vehicle becomes stuck in snow,
mud, sand, etc., then you may attempt
to rock the vehicle free by moving it
forward and backward.
Twowheel drive models—Turn off the
traction control system to become un-
stuck to allow the tires to spin enough
to remove the vehicle from the obstruc-
tion. (For details, see “Traction control
system” on page 182 in Section 17.)
CAUTION
Do not attempt to rock the vehicle
free by moving it forward and back-
ward if people or objects are any-
where near the vehicle. During the
rocking operation the vehicle may
suddenly move forward or backward
as it becomes unstuck, causing injury
or damage to nearby people or ob-
jects.
—After changing wheels
If your vehicle becomes stuck

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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.
Before towing, release the parking brake,
put the transmission in “N” and as to the
four −wheel drive models, moreover, set
the transfer in “2WD” mode. The key must
be in “ACC” (engine off) or “ON” (engine
running).
CAUTION
If the engine is not running, the pow-
er assist for the brakes and steering
will not work so steering and braking
will be much harder than usual.
Before emergency towing, check that
the hook is not broken or damaged and
that the installation bolts are not loose.
Fasten the towing cable or chain se-
curely to the hook.
Do not jerk the hook. Apply steady and
even force.
To avoid damaging the hook, do not
pull from the side or at a vertical
angle. Always pull straight ahead.
—Emergency towing hook
precautions