2004 TOYOTA SIENNA warning light

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If “E3” appears on the display, a system
malfunction has been detected.
If this code appears, stop your vehicle in
a safe place, turn the ignition off, and
then restart it to reset the system. If the
setting still cannot be made or the same
code appears again, the system might
have malfunctioned. Although there is no
problem to continue driving, please con-
tact your Toyota dealer. This mode allows you to cruise at a
desired speed over about 45 km/h (28
mph) with your foot off the accelerator
pedal.
Your cruising speed can be maintained up
or down grades within the limits of engine
performance, although a slight speed
change may occur when driving up or
down the grades. On steeper hills, a
greater speed change will occur so it is
better to drive without the cruise control.
CAUTION
In the conventional (fixed speed)
cruise control mode, the approach
warning does not activate and no
alarm will sound even if you are
too close to the vehicle ahead, as
neither the presence of the vehicle
ahead nor the vehicletovehicle
distance is detected. Pay special
attention to the distance between
your vehicle and the vehicle ahead.
Always confirm the setting in the
display.
Do not use the conventional (fixed
speed) mode in the following condi-
tions, or serious injury or death
could result:
To help maintain maximum control
of your vehicle, do not use conven-
tional cruise control mode when us-
ing dynamic laser cruise control
while driving in heavy or varying
traffic, or on slippery (rainy, icy or
snowcovered) or winding roads.
Avoid vehicle speed increasing
when driving downhill. If the vehicle
speed is too fast in relation to the
preset speed in the conventional
cruise control mode, cancel the
conventional cruise control mode
and then downshift the transmis-
sion to use engine braking to slow
down.
—Conventional (fixed speed)
cruise control mode

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You cannot set a desired speed if the
master warning light comes on, the alarm
sounds and the display indicates the
warning code “E3”. If this code appears
on the display, see “CONVENTIONAL
CRUISE CONTROL MODE FAILURE
WARNING” on page 210.
CANCELLING THE PRESET SPEED
You can cancel the preset speed by doing
any of the following:a. Pulling the lever in the “CANCEL” direction.
b. Depressing the brake pedal. c. Pressing the “ON −OFF” button.
In the following cases, the preset speed
automatically cancels out: a. The vehicle speed falls below about 40km/h (25 mph).
b. If the vehicle speed drops 16 km/h (10 mph) below the preset speed, the pre-
set speed will also automatically be
cancelled.
c. The slip indicator light blinks and an alarm sounds. (This occurs when the
vehicle is about to skid.)
If cancelled by a. or b., the preset speed
data is cleared and you must set the
speed from the beginning. If the preset speed automatically cancels
out for other than the above reasons, do
not operate the cruise control. Although it
is no problem to continue driving, have
your vehicle checked by your Toyota deal-
er at the earliest opportunity.
RESETTING TO A FASTER SPEED
Push the lever up in the “+ RES” direction
and hold it. Release the lever when the
desired speed is attained. While the lever
is held up, the vehicle will gradually gain
speed.
When the difference between the actual
vehicle speed and the set speed is less
than 5 km/h (3 mph), the set speed can
be increased 1.6 km/h (1 mph) each time
by pushing the lever up in the “+ RES”
direction quickly within 0.6 seconds.
However, a faster way to reset is to ac-
celerate the vehicle and then push the
lever down in the “− SET” direction.
RESETTING TO A SLOWER SPEED
Push the lever down in the “
− SET” direc-
tion and hold it. Release the lever when
the desired speed is attained. While the
lever is held down, the vehicle speed will
gradually decrease.
When the difference between the actual
vehicle speed and the set speed is less
than 5 km/h (3 mph), the set speed can
be lowered 1.6 km/h (1 mph) each time
by pushing the lever down in the “ − SET”
direction quickly within 0.6 seconds.
However, a faster way to reset is to ac-
celerate the vehicle and then push the
lever down in the “− SET” direction.
Even if you downshift from “D” to “4” in
the conventional cruise control mode, en-
gine braking will not be enabled because
this mode is not cancelled. To decrease
the vehicle’s speed, reset to a slower
speed with the cruise control lever or de-
press the brake pedal. If you use the
brake pedal, cruise control is cancelled.

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RESUMING THE PRESET SPEED
If the preset speed is cancelled by pulling
the lever, by depressing the brake pedal
or by activating the vehicle stability con-
trol system, pushing the lever up in the
“+ RES” direction will restore the speed
set prior to cancellation.
However, once the vehicle speed falls be-
low about 40 km/h (25 mph), the preset
speed will not be resumed.
CONVENTIONAL CRUISE CONTROL
MODE FAILURE WARNING
If there is trouble in the conventional
cruise control mode, the “CRUISE” indica-
tor light in the instrument cluster flashes,
the master warning light comes on and
the alarm sounds, the warning code “E3”
will appear on the display.
If a system malfunction is detected when
the conventional cruise control mode is in
the ready mode or operating, the master
warning light comes on, an alarm sounds
and the above code appears.If this code appears, press the “ON
−OFF”
button to turn the system off and then
push it again to turn it on. If the setting
still cannot be made or the same code
appears again, the system might have
malfunctioned. Although there is no prob-
lem to continue driving, please contact
your Toyota dealer.

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The tandem master cylinder brake system
is a hydraulic system with two separate
sub−systems. If either sub −system s hould
fail, the other will still work. However, the
pedal will be harder to press, and your
stopping distance will increase. Also, the
brake system warning light may come on.
CAUTION
Do not drive your vehicle with only a
single brake system. Have your
brakes fixed immediately.
BRAKE BOOSTER
The brake booster uses engine vacuum to
power −assist the brakes. If the engine
should quit while you are driving, you can
bring the vehicle to a stop with normal
pedal pressure. There is enough reserved
vacuum for one or two stops—but no
more!
CAUTION
Do not pump the brake pedal if the
engine stalls. Each push on the
pedal uses up your reserved vacu-
um.
Even if the power assist is com-
pletely lost, the brakes will still
work. But you will have to push the
pedal hard, much harder than nor-
mal. And your braking distance will
increase.
ANTILOCK BRAKE SYSTEM (with
“ABS” warning light)
The antilock brake system is designed
to help prevent lockup of the wheels
during a sudden braking or braking on
slippery road surfaces. This assists in
providing directional stability and steer-
ing performance of the vehicle under
these circumstances.
Effective way to press the ABS brake
pedal: When the anti −lock brake system
function is in action, you may feel the
brake pedal pulsating and hear a noise.
In this situation, to let the anti −lock
brake system work for you, just hold the
brake pedal down more firmly. Do not
pump the brake in a panic stop. This
will result in reduced braking performan-
ce.
The anti −lock brake system becomes op-
erative after the vehicle has accelerated
to a speed in excess of approximately 10
km/h (6 mph). It stops operating when the
vehicle decelerates to a speed below
approximately 5 km/h (3 mph).
Depressing the brake pedal on slippery
road surfaces such as on a manhole cov-
er, a steel plate at a construction site,
joints in a bridge, etc. on a rainy day
tends to activate the anti −lock brake sys-
tem.
You may hear a click or motor sound in
the engine compartment for a few seconds
when the engine is started or just after
the vehicle begins to move. This means
that the anti −lock brake system is in the
self −check mode, and does not indicate a
malfunction.
Brake system

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Ty p e A
Ty p e B
“ABS” warning light
Vehicles without the vehicle stability
control system—
The light comes on when the ignition key
is turned to the “ON” position. If the anti−
lock brake system works properly, the
light turns off after a few seconds. There-
after, if either of the systems malfunc-
tions, the light comes on again.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system does not operate,
but the brake system still operates con-
ventionally.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system does not operate
but the brake assist system still operates.
In this case the wheels could lock up
during a sudden braking or braking on
slippery road surfaces. If either of the following conditions
occurs, this indicates a malfunction
somewhere in the components moni-
tored by the warning light system. Con-
tact your Toyota dealer as soon as
possible to service the vehicle.
The light does not come on when the
ignition key is turned to the “ON” posi-
tion, or remains on.
The light comes on while you are driv-
ing.
A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If the “ABS” warning light remains on
together with the brake system warn-
ing light, immediately stop your ve-
hicle at a safe place and contact your
Toyota dealer.
In this case, not only the antilock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.

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Vehicles with the vehicle stability con-
trol system—
The light comes on when the ignition key
is turned to the “ON” position. If the anti−
lock brake system and the brake assist
system work properly, the light turns off
after a few seconds. Thereafter, if either
of the systems malfunctions, the light
comes on again.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system, the brake assist
system, the traction control system and
the vehicle stability control system do not
operate, but the brake system still oper-
ates conventionally.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system does not operate
so that the wheels could lock up during
a sudden braking or braking on slippery
road surfaces. If either of the following conditions
occurs, this indicates a malfunction
somewhere in the parts monitored by
the warning light system. Contact your
Toyota dealer as soon as possible to
service the vehicle.
The light does not come on when the
ignition key is turned to the “ON” posi-
tion, or remains on.
The light comes on while you are driv-
ing.
A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If the “ABS” warning light remains on
together with the brake system warn-
ing light, immediately stop your ve-
hicle at a safe place and contact your
Toyota dealer.
In this case, not only the antilock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.
BRAKE ASSIST SYSTEM
When you slam the brakes on, the
brake assist system judges as an emer-
gency stop and provides more powerful
braking for a driver who cannot hold
down the brake pedal firmly.
When you slam the brakes on, more pow-
erful braking will be applied. At this time,
you may hear a sound in the engine
compartment and feel the vibrations of the
brake pedal. This does not indicate a mal-
function.
Vehicles with the vehicle stability control
system—
The brake assist system becomes opera-
tive after the vehicle has accelerated to
a speed in excess of approximately 10
km/h (6 mph). It stops operating when the
vehicle decelerates to a speed below
approximately 5 km/h (3 mph).
For an explanation of this system’s warn-
ing light, see “Service reminder indicators
and warning buzzers” on page 167 in Sec-
tion 1 −5.

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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 463 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 370 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
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-
straints move up and down smoothly and
that the locks hold securely in any latched
position. For folding
−down rear seatbacks
and detachable second seats, 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
In 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
On a safe incline, check that your vehicle
is held securely with the selector lever in
“P” position and all brakes released.
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 the doors including back
door operate smoothly and all latches lock
securely. Make sure the engine hood sec-
ondary latch secures the hood from open-
ing when the primary latch is released.

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If the tire pressure warning light
co mes on :
Decelerate at a speed below 90
km/h (55 mph), then adjust the tire
pressure to the specified level as
soon as possible. Do not drive
more than 160 km (100 miles). When the tire pressure is below
140 kPa (1.4 kgf/cm2 or bar, 20
psi), consult your Toyota deal-
er. If the tire is flat or the tire
pressure is below 100 kPa (1.0
kgf/cm2 or bar, 15 psi), the tire
must be replaced. Do not use
the repaired tire.
 When the tire pressure is 140
kPa (1.4 kgf/cm2 or bar, 20 psi)
or more, adjust it to specified
level. (See “Tires” on page 491
in Section 8.)
For details about the tire pressure
warning system, se e “Tire pressure
warning system” on page 188 in Sec-
tion 1 −6. Vehicles with compact spare tire—
When you replace the tire, see
“—Compact spare tire” through “—Af-
ter changing wheels”, pages 413
through 425 in Section 4.
CAUTION
As the runflat tire allows you to
continue driving if any tire goes
flat, the tire performance is not
the same as normal condition. If
the runflat tire goes flat, take
your vehicle to the nearest Toyo-
ta dealer or authorized tire dealer
as soon as possible, observing
the following instructions:

Decelerate as soon as possible
to the lowest appropriate
speed that conditions permit.
Do not drive for longer than
160 km (100 miles) or over 90
km/h (55 mph).
Avoid abrupt steering wheel
maneuvering and braking. If
t h e veh i cl e ti res det eri o rat e,
you could lose control of the
steering wheel or the brakes,
causing death or serious inju-
ry.
 Do not replace or repair the tire
by yourself. When the tires
must be replaced or repaired,
consult your Toyota dealer or
authorized tire dealer.