2006 TOYOTA SIENNA warning light
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For details about the run−flat tires, see
“Run −flat tires” on page 476 in Section
7 −2.
If the warning light blinks once every
second:
The low tire pressure warning system may
be malfunctioning. Contact your Toyota
dealer.
If the warning light blinks twice every
second:
The low tire pressure warning system
needs to be initialized. Reset the system
with the tire pressure warning system re-
set switch. (To reset the system, see
“TIRE PRESSURE WARNING SYSTEM
RESET SWITCH”.)
The tire pressure warning system does
not function properly under certain cir-
cumstances. In the following cases, the
low tire pressure warning light may not
come on even if the tire inflation pres-
sure is low, or it may come on when
the tire inflation pressure is actually
normal.
The tread wear is uneven among the
tires.
A compact spare tire, snow tires, or
tire chains are used.
The tire inflation pressure is excessive-
ly higher than specified, or tire inflation
pressure suddenly drops due to burst-
ing or other causes.
The vehicle is driven on a slippery
road surface such as rough or frozen
roads.
The vehicle speed is less than 30 km/h
(19 mph) or more than 100 km/h (62
mph), and the driving duration is less
than 5 minutes.
The tires differ in tread pattern or
manufacturer.
The tires are not the specified size.
The tread wear is very different among
the installed tires.
The pressure of two or more tires
drops at the same time.
Rapid acceleration/deceleration or
sharp turns is continue.
Towing a trailer.
The loading is over the limit or imbal-
anced.
Initialization was not performed correct-
ly after replacing or rotating tires or
wheels.
Vehicles with vehicle stability control
system—The outside temperature is be-
low 0 C (32F) or above 40 C (104 F).
CAUTION
When the tire pressure warning light
comes on, observe the following in-
structions:
Vehicles with the standard tires—
Adjust the tire inflation pressure to
the specified level as soon as pos-
sible.
Vehicles with the run flat tires—
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 maneu-
vering and braking. If the vehicle
tires deteriorate, you could lose
control of the steering wheel or the
brakes, causing death or serious in-
jury.
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Note: The tire pressure warning sys-
tem on your vehicle will warn you
when one of your tires is significantly
under inflated and when some com-
binations of your tires are significant-
ly under inflated. However, there are
other combinations of significantly
under inflated tires for which your
tire pressure warning system may not
warm you. These other combinations
are relatively common, accounting for
approximately half the instances in
which vehicles have significantly un-
der inflated tires. For example, your
system may not warm you when both
tires on the same side or on the
same axle of your vehicle are signifi-
cantly under inflated. It is particularly
important, therefore, for you to check
the tire pressure in all of your tires
regularly and maintain proper pres-
sure.
TIRE PRESSURE WARNING SYSTEM
RESET SWITCH
The tire pressure warning system need
to be initialized in the following condi-
tions:
When the low tire pressure warning
light blinks twice every second
After replacing or rotating tires or
wheels
When initializing the system, the pres-
ent tire condition is stored as a stan-
dard. To initialize the system, perform the fol-
lowing:
1. Park the vehicle at a safe place and apply the parking brake. Stop the en-
gine.
2. Adjust the pressure of all the installed tires to the specified level. (See “Tires”
on page 501 in Section 8.)
3. Turn the ignition key to “ON”. Vehicles with vehicle stability control
system only—If the low tire pressure
warning light comes on, push the reset
switch for a few seconds and make
sure the warning light goes off.
4. Push and hold the reset switch until the low tire pressure warning light
blinks three times.
Vehicles without vehicle stability control
system—Initialization is completed after
driving at the speeds of 30 km/h (19 mph)
or over for about 8 hours total, when the
tire pressure warning system detects the
normal tire pressure.
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Vehicles with vehicle stability control sys-
tem—Initialization is completed after driv-
ing at the speeds of 30 km/h (19 mph) or
over for more than one hour. If the follow-
ing driving conditions are satisfied, initiali-
zation will be completed in about one
hour.
The vehicle speed is between 50 km/h
(31 mph) and 100 km/h (62 mph).
The roads are dry, smooth and straight.
The number of passengers is 1 or 2
(including driver).
When initializing the system, make sure
the low tire pressure warning light blinks
three times. If the warning light does not
blink three times, initializing will be failed
and the tire pressure warning system will
not function properly.
Do not push the reset switch without ad-
justing the tire inflation pressure to the
specified level. Otherwise, the low tire
pressure warning light may not come on
even if the tire inflation pressure is low,
or it may come on when the tire inflation
pressure is actually normal.
If you push the reset switch while the
vehicle is moving, initialization is not per-
formed.If the low tire pressure warning light does
not blink when you push and hold the
reset switch, have the low pressure warn-
ing system checked at your Toyota dealer.
When the warning light blinks twice every
second while driving, you may be unable
to reset the system. In this case, set the
system again according to the above pro-
cedure.
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CRUISE CONTROL FAILURE WARNING
If the “CRUISE” indicator light flashes
when using the cruise control, press the
“ON−OFF” button to turn the system off
and then press it again to turn it on.
If any of the following conditions then oc-
curs, there is some trouble in the cruise
control system.
The indicator light does not come on.
The indicator light flashes again.
The indicator light goes out after it
comes on.
If this is the case, contact your Toyota
dealer and have your vehicle inspected. Dynamic laser cruise control allows you
to drive at a selected cruising speed
over about 45 km/h (28 mph) with your
foot off the accelerator pedal, maintain-
ing an appropriate vehicle to vehicle
distance.
CAUTION
Do not rely excessively on dynamic
laser cruise control in order to avoid
serious injury or death, or to prevent
accidents or to control the vehicle’s
speed in emergency situations. Do
not use cruise control except in ap-
propriate road and traffic conditions.
Always drive carefully and attentively.
Before using dynamic laser cruise
control, read and understand the fol-
lowing instructions.
Steering wheel
Instrument cluster
Dynamic laser cruise control—
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1. Cruise control switch
2. Distance switch
3. Display
4. “NORM.” indicator light (conventional cruise control mode
indicator light)
5. “CRUISE” indicator light
6. “READY” indicator light (ready mode indicator light)
7. Master warning light
Vehicle to vehicle distance control mode
Conventional (fixed speed) cruise control
mode
The dynamic laser cruise control func-
tion has two cruise control modes.
Vehicle −to −vehicle distance control
mode for maintaining an appropriate
distance between vehicles
Conventional (fixed speed) cruise con-
trol mode for cruising at preset speeds
You can change the mode by using the
control lever.
The two cruise control modes function dif-
ferently. If you use dynamic laser cruise
control, always confirm which mode is se-
lected.
For the vehicle −to −vehicle distance control
mode, see “—Vehicle −to −vehicle distance
control mode” on page 218. For the con-
ventional (fixed speed) cruise control
mode, see “—Conventional (fixed speed)
cruise control mode” on page 228.
—Dynamic laser cruise control
modes
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CAUTION
Do not rely excessively on dynamic
laser cruise control. Observe the fol-
lowing precautions in order to avoid
serious injury or death:
Under certain conditions where the
vehicle in front slows drastically, or
is stopped, the dynamic laser cruise
control will neither warn you nor
decelerate. You must depress the
brake pedal to slow down, ensuring
collision avoidance or that suffi-
cient vehicle to vehicle distance is
maintained.
Do not use dynamic laser cruise
control in the following conditions:
In bad weather (such as rain, fog,
snow, sandstorms or direct sun-
light, or when raindrops or snow-
flakes get on the laser radar sensor
glass), the vehicle to vehicle dis-
tance will not be measured accura-
tely.
When using the windshield wipers
at high or low speeds the dynamic
laser radar cruise control turns off.
On roads with heavy traffic or
sharp bends, an appropriate speed
cannot be maintained and an acci-
dent may occur.
On slippery road surfaces (icy or
snow covered road surfaces), the
tires will race and you will be un-
able to control the vehicle.
When there is no vehicle detected
ahead on steep downhill slopes, the
preset speed will be easily exceed-
ed because of inefficient engine
braking. (In this case, automatic
braking will not work.) If there is a
vehicle detected ahead, the delay in
deceleration timing could cause se-
rious injury or death.
When the alarm sounds frequently
(because acceleration or decelera-
tion was repeated or sufficient ve-
hicle to vehicle distance was not
maintained), an appropriate vehicle
speed cannot be attained and an
accident may occur.On roads with steep and short in-
clines and declines, failure to de-
tect the vehicle ahead will shorten
the distance between your vehicle
and the vehicle ahead and an acci-
dent may occur.
Deceleration cruising function and
approach warning do not operate
when the vehicle ahead is at a stop
or driving very slowly.
If the vehicle ahead of you deceler-
ates abruptly or if another vehicle
cuts in ahead of you, your vehicle
may collide with the vehicle ahead
unless you manually depress the
brake pedal to slow down your ve-
hicle.
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If you need to accelerate—for example,
when passing—depress the accelerator
pedal enough for the vehicle to exceed
the preset speed. When you release the
accelerator pedal, the vehicle will return to
the control prior to acceleration.
You cannot set a desired speed if the
master warning light comes on, the alarm
sounds and the display indicates one of
the warning codes “E1”, “E2” or “E3”. If
any of the above codes appears on the
display, see “VEHICLE−TO −VEHICLE
DISTANCE CONTROL MODE FAILURE
WARNING” on page 227.
CANCELLING THE
VEHICLE TO VEHICLE DISTANCE
CONTROL MODE
The vehicle −to −vehicle distance control
mode may be temporarily cancelled by the
driver or by the system itself under cer-
tain circumstances. Temporary cancellation
allows the set cruising speed and vehicle −
to −vehicle distance to remain in memory.
The vehicle −to −vehicle distance control
mode can be temporarily cancelled by do-
ing the following:
Pulling the lever in the “CANCEL” di-
rection and releasing it
Depressing the brake pedal Under certain circumstances, the vehicle
−
to −vehicle distance control mode is tempo-
rarily cancelled:
When vehicle speed falls below 40
km/h (25 mph)
When vehicle stability control is acti-
vated
The “READY” indicator light comes on to
indicate that the system is still in opera-
tion.
To turn the system off, press the “ON −
OFF” button. Make sure the “CRUISE” in-
dicator light is off.
If one of the warning codes “E1”, “E2” or
“E3” appears on the display, the preset
speed automatically cancels out. See
“VEHICLE −TO −VEHICLE DISTANCE
CONTROL MODE FAILURE WARNING” on
page 227.
If the vehicle −to −vehicle distance control
mode automatically cancels out other than
for the above cases, have your vehicle
checked by your Toyota dealer at the ear-
liest opportunity. RESUMING THE VEHICLE TO VEHICLE
DISTANCE CONTROL MODE
If the vehicle
−to −vehicle distance control
mode is temporarily cancelled, the cruising
speed and vehicle −to −vehicle distance can
be resumed by pushing the lever up in the
“+ RES” direction.
Vehicle speed must be above 40 km/h (25
mph).
During follow −up cruising, if there are no
vehicles ahead because they have
changed lanes, your vehicle will accelerate
gradually up to the preset speed. At this
time, pushing the lever up in the “+ RES”
direction will quickly speed up your ve-
hicle in vehicle −to −vehicle distance control
mode.
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Before driving in the vehicle to vehicle
distance control mode, make sure the
radar sensor glass is clean.
This product is a class I laser product
complied with 21 C.F.R part 1040.10
and 1040.11.
CAUTION
To ensure that dynamic laser cruise
control will function properly while
driving, observe the following:
Always keep the laser radar sensor
glass clean. When cleaning, use a
soft cloth and be careful not to
damage the sensor.
Avoid strong impacts around the la-
ser radar sensor. An incorrect laser
radar sensor alignment will result in
system malfunction. A special de-
vice is required to adjust the laser
radar sensor alignment. Be sure to
have the sensor adjusted by your
Toyota dealer.
Do not affix a sticker (including a
transparent sticker) or attach an ac-
cessory around the laser radar sen-
sor.
VEHICLE TO VEHICLE DISTANCE
CONTROL MODE FAILURE WARNING
If there is trouble somewhere in the dy-
namic laser cruise control while the ve-
hicle−to −vehicle distance control mode is
on, the master warning light comes on
and the alarm sounds, and one of the
warning codes “E1”, “E2” or “E3” will ap-
pear on the display. Dynamic laser cruise
control is automatically cancelled.
If “E3” appears on the display, the
“CRUISE” indicator light in the instrument
cluster also flashes. If “E1” appears on the display,
the sys-
tem cannot easily measure the vehicle −to −
vehicle distance because of a dirty laser
radar sensor glass while the dynamic la-
ser cruise control is on.
If this code appears, clean the sensor
glass with a soft cloth and try setting the
preset speed again. If the dirt is removed
without cleaning, the system will automati-
cally enter the ready mode.
If the system does not enter the ready
mode even after cleaning or the code re-
mains on the display, the system might be
malfunctioning. Although there is no prob-
lem to continue driving, please contact
your Toyota dealer.
CAUTION
Always keep the sensor glass and
never allow it to be covered with
icicle or any substance, so it can de-
tect the vehicle in front.