2007 TOYOTA PRIUS sensor

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23p137a
HEADLIGHTS
To turn on the following lights: Twist
the headlight/turn signal lever knob.
Position 1—Parking, tail, license plate,
side marker and instrument panel lights
Position 2—Headlights and all of the
above
Position 3 (“AUTO”)—Headlights and/or all
of the lights in position 1
They automatically turn on or off depend-
ing on the darkness of the surroundings.
Manually twist the knob to the position 2
to turn on the headlights if they are need-
ed immediately when entering a dark tun-
nel, parking structure, etc.
23p124_1
The automatic light control sensor is on
the top of the driver’s side instrument
panel.
Do not place anything on the instrument
panel, and/or do not affix anything on the
windshield to block this sensor.
Automatic light cut off system
The lights automatically turn off when the
driver ’s door is opened with the hybrid
system off. To turn them on again, press
the “POWER” switch twice from the off
setting to select the “IG−ON” mode with-
out depressing the brake pedal or actuate
the headlight switch. If you are going to
park for over one week, make sure the
headlight switch is off. When the headlight switch is turned to the
first or second clickstop, the brightness of
the instrument cluster will be reduced
slightly unless the instrument panel light
control dial is turned fully on.
NOTICE
To prevent the battery from being dis-
charged, do not leave the switch on
longer than necessary when the hy-
brid system is not running.
Headlights and turn signals
(with automatic light control system)

130
CAUTION
If the “ABS” warning light remains on
together with the red brake system
warning light, immediately stop your
vehicle at a safe place and contact
your Toyota dealer.
In this case, not only the antilock
brake system function and brake as-
sist function will fail but also the ve-
hicle will become extremely unstable
during braking.
Any of the following conditions may oc-
cur, but does not indicate the malfunc-
tion:
The light may stay on for about 60
seconds after the hybrid system is
started. It is normal if it turns off after
a whi l e.
Depressing the brake pedal repeatedly
may turn on the light. It is normal if
it turns off after a few seconds.(g) SRS Warning Light
This indicator comes on when the “IG
ON” mode is enabled. It goes off after
about 6 seconds. This means the SRS
front airbags, side and curtain shield
airbags and seat belt pretensioners are
operating properly.
The warning light system monitors the air-
bag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sen-
sors, curtain shield airbag sensors,
driver ’s seat position sensor, driver ’s seat
belt buckle switch, front passenger occu-
pant classification system, “AIRBAG ON”
indicator light, “AIRBAG OFF” indicator
light, front passenger ’s seat belt buckle
switch, seat belt pretensioner assemblies,
interconnecting wiring and power sources.
If any of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.
The light does not come on when the
“IG
−ON” mode is enabled or remains
on for more than 6 seconds.
The light comes on while driving.
The SRS warning light and “AIRBAG OFF”
indicator light will come on if there is a
malfunction in the front passenger occu-
pant classification system. (h) Open Door Warning Light
This light remains on until all the doors
are completely closed.
(i) Low Fuel Level Indicator Light
This light blinks when the fuel level in the
tank becomes nearly empty. Fill up the
tank as soon as possible.
At the first blinking of the light, the mes-
sage appears on the display to remind the
driver to fill fuel.
Contact your Toyota dealer if the fill fuel
gauge blinks.

298
CAUTION
Do not use the windshield air flow
switch during cooled air operation in
extremely humid weather. The differ-
ence between the temperature of the
outside air and that of the windshield
could cause the outer surface of the
windshield to fog up blocking your
vision.
27p126
The light sensor is located on the driv-
er ’s side edge of the instrument panel.
If you put anything on this area or
cover the area, the sensor function
may be adversely affected.
To cool off your Toyota after it has
been parked in the hot sun, drive with
the windows open for a few minutes.
This vents the hot air, allowing the air
conditioning to cool the interior more
quickly.
Make sure the air intake grilles in front
of the windshield are not blocked (by
leaves or snow, for example).
On humid days, do not blow cold air
on the windshield. The windshield could
fog up because of the difference in air
temperature on the inside and outside
of the windshield.
Keep the area under the front seats
clear to allow air to circulate through-
out the vehicle.
On cold days, set the fan speed to
high for a minute to help clear the
intake ducts of snow or moisture. This
can reduce the amount of fogging on
the windows.
When driving on dusty roads, close all
windows. If dust thrown up by the ve-
hicle is still drawn into the vehicle after
closing the windows, it is recommended
that the air intake selector be set to
OUTSIDE AIR and the fan speed se-
lector to any setting except “OFF”.
If following another vehicle on a dusty
road, or driving in windy and dusty
conditions, it is recommended that the
air intake selector be temporarily set to
RECIRCULATE, which will close off the
outside passage and prevent outside
air and dust from entering the vehicle
interior.
(c) Operating tips

329
CAUTION
Do not overestimate the antilock
brake system: Although the antilock
brake system assists in providing ve-
hicle control, it is still important to
drive with all due care and maintain
a moderate speed and safe distance
from the vehicle in front of you, be-
cause there are limits to the vehicle
stability and effectiveness of steering
wheel operation even with the anti
lock brake system on.
If tire grip performance exceeds its
capability, or if hydroplaning occurs
during high speed driving in the rain,
the antilock brake system does not
provide vehicle control.
Antilock brake system is not de-
signed to shorten the stopping dis-
tance: Always drive at a moderate
speed and maintain a safe distance
from the vehicle in front of you.
Compared with vehicles without an
antilock brake system, your vehicle
may require a longer stopping dis-
tance in the following cases:
Driving on rough, gravel or snow
covered roads.
Driving with tire chains installed.
Driving over the steps such as the
joints on the road.
Driving on roads where the road
surface is pitted or has other differ-
ences in surface height.
Install all 4 tires of specified size at
appropriate pressure: The antilock
brake system detects vehicle speeds
using the speed sensors for respec-
tive wheels’ turning speeds. The use
of tires other than specified may fail
to detect the accurate turning speed,
resulting in a longer stopping dis-
tance.
30p002b
Vehicle sold in the U.S.A.
30p007b
Vehicle sold in Canada

443
In order to be effective, the SRS
airbags must deploy with tremen-
dous speed. The rapid deployment
of the SRS airbags makes the
SRS airbags themselves potential
sources of serious injury if an oc-
cupant is too close to an airbag,
or if an object or some part of his
or her body has been placed be-
tween the occupant and the airbag
at the time of deployment. This is
just one example of how the in-
structions in Section 2−2 of this
Owner ’s Manual will help ensure
proper use of the occupant re-
straint systems, and increase the
safety they can provide to you
and your family in the event of an
accident.
Toyota recommends you to read
the provisions in Section 2− 2 care-
fully and refer to them as needed
during your time of ownership of
this vehicle.Event data recorder
Your vehicle has computers that
monitor and control certain as-
pects of your vehicle. These com-
puters assist in driving and main-
taining optimal vehicle perfor-
mance. Besides storing data useful
for troubleshooting, there is a sys-
tem to record data in a crash or
a near car crash event. This is
called an Event Data Recorder
(EDR).
The SRS airbag sensor assembly
contains the EDR. In a crash or a
near car crash event, this device
may record some or all of the fol-
lowing information:
 Engine speed
 Whether the brake pedal was
applied or not
 Vehicle speed
 To what extent the accelerator
pedal was depressed
 Position of the transmission
selector lever
 Whether the driver and front
passenger wore the seat belts
or not
 Driver ’s seat position
 Front passenger ’s occupant
classification